feat: Implement instructor course management, including student progress tracking and course content views, alongside admin user management.

frontend_management/components/course/AnnouncementsTab.vue

@@ -0,0 +1,458 @@
+<template>
+  <div>
+    <div class="flex justify-between items-center mb-6">
+      <h2 class="text-xl font-semibold text-gray-900">ประกาศ</h2>
+      <q-btn
+        color="primary"
+        label="สร้างประกาศ"
+        icon="add"
+        @click="openDialog()"
+      />
+    </div>
+
+    <div v-if="loading" class="flex justify-center py-10">
+      <q-spinner color="primary" size="40px" />
+    </div>
+
+    <div v-else-if="announcements.length === 0" class="text-center py-10 text-gray-500">
+      <q-icon name="campaign" size="60px" color="grey-4" class="mb-4" />
+      <p>ยังไม่มีประกาศ</p>
+      <q-btn
+        color="primary"
+        label="สร้างประกาศแรก"
+        class="mt-4"
+        @click="openDialog()"
+      />
+    </div>
+
+    <div v-else class="space-y-4">
+      <q-card
+        v-for="announcement in announcements"
+        :key="announcement.id"
+        flat
+        bordered
+        class="rounded-lg"
+      >
+        <q-card-section>
+          <div class="flex items-start justify-between">
+            <div class="flex-1">
+              <div class="flex items-center gap-2">
+                <q-icon v-if="announcement.is_pinned" name="push_pin" color="orange" size="20px" />
+                <h3 class="font-semibold text-gray-900">{{ announcement.title.th }}</h3>
+                <q-badge :color="announcement.status === 'PUBLISHED' ? 'green' : 'grey'">
+                  {{ announcement.status === 'PUBLISHED' ? 'เผยแพร่' : 'ฉบับร่าง' }}
+                </q-badge>
+              </div>
+              <p class="text-sm text-gray-500 mt-1">{{ announcement.title.en }}</p>
+              <p class="text-gray-600 mt-3 whitespace-pre-line">{{ announcement.content.th }}</p>
+              <p class="text-xs text-gray-400 mt-3">
+                สร้างเมื่อ {{ formatDate(announcement.created_at) }}
+              </p>
+            </div>
+            <div class="flex gap-1">
+              <q-btn flat round icon="edit" color="primary" size="sm" @click="openDialog(announcement)" />
+              <q-btn flat round icon="delete" color="negative" size="sm" @click="confirmDelete(announcement)" />
+            </div>
+          </div>
+        </q-card-section>
+      </q-card>
+    </div>
+
+    <!-- Announcement Dialog -->
+    <q-dialog v-model="showDialog" persistent>
+      <q-card style="min-width: 600px; max-width: 700px">
+        <q-card-section class="row items-center q-pb-none">
+          <div class="text-h6">{{ editing ? 'แก้ไขประกาศ' : 'สร้างประกาศใหม่' }}</div>
+          <q-space />
+          <q-btn icon="close" flat round dense @click="showDialog = false" />
+        </q-card-section>
+
+        <q-card-section>
+          <div class="space-y-4">
+            <q-input
+              v-model="form.title.th"
+              outlined
+              label="หัวข้อ (ภาษาไทย) *"
+              :rules="[val => !!val || 'กรุณากรอกหัวข้อ']"
+              lazy-rules="ondemand"
+              hide-bottom-space
+            />
+            <q-input
+              v-model="form.title.en"
+              outlined
+              label="หัวข้อ (English)"
+            />
+            <q-input
+              v-model="form.content.th"
+              outlined
+              type="textarea"
+              rows="4"
+              label="เนื้อหา (ภาษาไทย) *"
+              :rules="[val => !!val || 'กรุณากรอกเนื้อหา']"
+              lazy-rules="ondemand"
+              hide-bottom-space
+            />
+            <q-input
+              v-model="form.content.en"
+              outlined
+              type="textarea"
+              rows="4"
+              label="เนื้อหา (English)"
+            />
+            <div class="flex gap-4">
+              <q-toggle v-model="form.is_pinned" label="ปักหมุด" />
+              <q-select
+                v-model="form.status"
+                :options="[
+                  { label: 'ฉบับร่าง', value: 'DRAFT' },
+                  { label: 'เผยแพร่', value: 'PUBLISHED' }
+                ]"
+                outlined
+                emit-value
+                map-options
+                label="สถานะ"
+                class="flex-1"
+              />
+            </div>
+
+            <!-- Published At -->
+            <div class="row q-col-gutter-sm" v-if="form.status === 'PUBLISHED'">
+              <div class="col-12 col-md-12">
+                <q-input filled v-model="form.published_at" label="วันเวลาที่เผยแพร่ (ไม่ระบุ = เผยแพร่ทันที)">
+                  <template v-slot:prepend>
+                    <q-icon name="event" class="cursor-pointer">
+                      <q-popup-proxy cover transition-show="scale" transition-hide="scale">
+                        <q-date v-model="form.published_at" mask="YYYY-MM-DD HH:mm">
+                          <div class="row items-center justify-end">
+                            <q-btn v-close-popup label="Close" color="primary" flat />
+                          </div>
+                        </q-date>
+                      </q-popup-proxy>
+                    </q-icon>
+                  </template>
+
+                  <template v-slot:append>
+                    <q-icon name="access_time" class="cursor-pointer">
+                      <q-popup-proxy cover transition-show="scale" transition-hide="scale">
+                        <q-time v-model="form.published_at" mask="YYYY-MM-DD HH:mm" format24h>
+                          <div class="row items-center justify-end">
+                            <q-btn v-close-popup label="Close" color="primary" flat />
+                          </div>
+                        </q-time>
+                      </q-popup-proxy>
+                    </q-icon>
+                  </template>
+                </q-input>
+              </div>
+            </div>
+
+            <!-- Attachments Section -->
+            <div class="border rounded-lg p-4">
+              <div class="flex justify-between items-center mb-3">
+                <h4 class="font-semibold text-gray-700">ไฟล์แนบ</h4>
+                <q-btn
+                  size="sm"
+                  color="primary"
+                  icon="attach_file"
+                  label="เพิ่มไฟล์"
+                  :loading="uploadingAttachment"
+                  @click="triggerFileInput"
+                />
+                <input
+                  ref="fileInputRef"
+                  type="file"
+                  class="hidden"
+                  @change="handleFileUpload"
+                />
+              </div>
+
+              <!-- Existing Attachments (edit mode) -->
+              <div v-if="editing?.attachments && editing.attachments.length > 0" class="space-y-2 mb-2">
+                <div
+                  v-for="attachment in editing?.attachments"
+                  :key="attachment.id"
+                  class="flex items-center justify-between bg-gray-50 rounded p-2"
+                >
+                  <div class="flex items-center gap-2">
+                    <q-icon name="insert_drive_file" color="grey" />
+                    <span class="text-sm">{{ attachment.file_name }}</span>
+                    <span class="text-xs text-gray-400">({{ formatFileSize(attachment.file_size) }})</span>
+                  </div>
+                  <q-btn
+                    flat
+                    round
+                    size="sm"
+                    icon="delete"
+                    color="negative"
+                    :loading="deletingAttachmentId === attachment.id"
+                    @click="deleteAttachment(attachment.id)"
+                  />
+                </div>
+              </div>
+
+              <!-- Pending Files (create mode) -->
+              <div v-if="pendingFiles.length > 0" class="space-y-2 mb-2">
+                <div
+                  v-for="(file, index) in pendingFiles"
+                  :key="index"
+                  class="flex items-center justify-between bg-blue-50 rounded p-2"
+                >
+                  <div class="flex items-center gap-2">
+                    <q-icon name="upload_file" color="primary" />
+                    <span class="text-sm">{{ file.name }}</span>
+                    <span class="text-xs text-gray-400">({{ formatFileSize(file.size) }})</span>
+                    <q-badge color="blue" label="รอสร้าง" size="sm" />
+                  </div>
+                  <q-btn
+                    flat
+                    round
+                    size="sm"
+                    icon="close"
+                    color="grey"
+                    @click="removePendingFile(index)"
+                  />
+                </div>
+              </div>
+
+              <div v-if="!editing?.attachments?.length && pendingFiles.length === 0" class="text-center py-4 text-gray-400 text-sm">
+                ยังไม่มีไฟล์แนบ
+              </div>
+            </div>
+          </div>
+        </q-card-section>
+
+        <q-card-actions align="right" class="q-pa-md">
+          <q-btn flat label="ยกเลิก" color="grey-7" @click="showDialog = false" />
+          <q-btn
+            :label="editing ? 'บันทึก' : 'สร้าง'"
+            color="primary"
+            :loading="saving"
+            @click="save"
+          />
+        </q-card-actions>
+      </q-card>
+    </q-dialog>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useQuasar } from 'quasar';
+import {
+  instructorService,
+  type AnnouncementResponse,
+  type CreateAnnouncementRequest
+} from '~/services/instructor.service';
+
+interface Props {
+  courseId: number;
+}
+
+const props = defineProps<Props>();
+const $q = useQuasar();
+
+// State
+const announcements = ref<AnnouncementResponse[]>([]);
+const loading = ref(false);
+const showDialog = ref(false);
+const editing = ref<AnnouncementResponse | null>(null);
+const saving = ref(false);
+
+// Form
+const form = ref<CreateAnnouncementRequest>({
+  title: { th: '', en: '' },
+  content: { th: '', en: '' },
+  is_pinned: false,
+  status: 'DRAFT',
+  published_at: ''
+});
+
+// Attachments
+const fileInputRef = ref<HTMLInputElement | null>(null);
+const uploadingAttachment = ref(false);
+const deletingAttachmentId = ref<number | null>(null);
+const pendingFiles = ref<File[]>([]);
+
+// Methods
+const fetchAnnouncements = async () => {
+  loading.value = true;
+  try {
+    announcements.value = await instructorService.getAnnouncements(props.courseId);
+  } catch (error) {
+    console.error('Failed to fetch announcements:', error);
+    $q.notify({ type: 'negative', message: 'ไม่สามารถโหลดประกาศได้', position: 'top' });
+  } finally {
+    loading.value = false;
+  }
+};
+
+const openDialog = (announcement?: AnnouncementResponse) => {
+  editing.value = announcement || null;
+  if (announcement) {
+    // Format date for q-date/q-time (YYYY-MM-DD HH:mm)
+    let formattedPublishedAt = '';
+    if (announcement.published_at) {
+      const date = new Date(announcement.published_at);
+      const year = date.getFullYear();
+      const month = String(date.getMonth() + 1).padStart(2, '0');
+      const day = String(date.getDate()).padStart(2, '0');
+      const hours = String(date.getHours()).padStart(2, '0');
+      const minutes = String(date.getMinutes()).padStart(2, '0');
+      formattedPublishedAt = `${year}-${month}-${day} ${hours}:${minutes}`;
+    }
+
+    form.value = {
+      title: { ...announcement.title },
+      content: { ...announcement.content },
+      is_pinned: announcement.is_pinned,
+      status: announcement.status,
+      published_at: formattedPublishedAt
+    };
+  } else {
+    form.value = {
+      title: { th: '', en: '' },
+      content: { th: '', en: '' },
+      is_pinned: false,
+      status: 'DRAFT',
+      published_at: ''
+    };
+  }
+  pendingFiles.value = [];
+  showDialog.value = true;
+};
+
+// Watch for published_at changes to auto-set status
+watch(() => form.value.published_at, (newVal) => {
+  if (newVal) {
+    form.value.status = 'PUBLISHED';
+  }
+});
+
+// Watch for status changes to clear published_at if DRAFT
+watch(() => form.value.status, (newVal) => {
+  if (newVal === 'DRAFT') {
+    form.value.published_at = '';
+  }
+});
+
+const save = async () => {
+  if (!form.value.title.th || !form.value.content.th) {
+    $q.notify({ type: 'warning', message: 'กรุณากรอกข้อมูลที่จำเป็น', position: 'top' });
+    return;
+  }
+
+  saving.value = true;
+  try {
+    if (editing.value) {
+      await instructorService.updateAnnouncement(props.courseId, editing.value.id, form.value);
+      $q.notify({ type: 'positive', message: 'บันทึกประกาศสำเร็จ', position: 'top' });
+    } else {
+      const created = await instructorService.createAnnouncement(props.courseId, form.value);
+      
+      // Upload pending files
+      for (const file of pendingFiles.value) {
+        try {
+          await instructorService.uploadAnnouncementAttachment(props.courseId, created.data.id, file);
+        } catch (err) {
+          console.error('Failed to upload attachment:', err);
+        }
+      }
+      
+      $q.notify({ type: 'positive', message: 'สร้างประกาศสำเร็จ', position: 'top' });
+    }
+    showDialog.value = false;
+    fetchAnnouncements();
+  } catch (error: any) {
+    $q.notify({ 
+      type: 'negative', 
+      message: error.data?.message || 'ไม่สามารถบันทึกประกาศได้', 
+      position: 'top' 
+    });
+  } finally {
+    saving.value = false;
+  }
+};
+
+const confirmDelete = (announcement: AnnouncementResponse) => {
+  $q.dialog({
+    title: 'ยืนยันการลบ',
+    message: `คุณต้องการลบประกาศ "${announcement.title.th}" หรือไม่?`,
+    cancel: true,
+    persistent: true
+  }).onOk(async () => {
+    try {
+      await instructorService.deleteAnnouncement(props.courseId, announcement.id);
+      $q.notify({ type: 'positive', message: 'ลบประกาศสำเร็จ', position: 'top' });
+      fetchAnnouncements();
+    } catch (error) {
+      $q.notify({ type: 'negative', message: 'ไม่สามารถลบประกาศได้', position: 'top' });
+    }
+  });
+};
+
+const triggerFileInput = () => {
+  fileInputRef.value?.click();
+};
+
+const handleFileUpload = async (event: Event) => {
+  const input = event.target as HTMLInputElement;
+  const files = input.files;
+  if (!files || files.length === 0) return;
+  
+  if (editing.value) {
+    // Upload immediately in edit mode
+    uploadingAttachment.value = true;
+    try {
+      await instructorService.uploadAnnouncementAttachment(props.courseId, editing.value.id, files[0]);
+      $q.notify({ type: 'positive', message: 'อัพโหลดไฟล์สำเร็จ', position: 'top' });
+      // Refresh editing
+      const all = await instructorService.getAnnouncements(props.courseId);
+      editing.value = all.find(a => a.id === editing.value?.id) || null;
+    } catch (error) {
+      $q.notify({ type: 'negative', message: 'ไม่สามารถอัพโหลดไฟล์ได้', position: 'top' });
+    } finally {
+      uploadingAttachment.value = false;
+    }
+  } else {
+    // Add to pending files in create mode
+    pendingFiles.value.push(files[0]);
+  }
+  
+  input.value = '';
+};
+
+const removePendingFile = (index: number) => {
+  pendingFiles.value.splice(index, 1);
+};
+
+const deleteAttachment = async (attachmentId: number) => {
+  if (!editing.value) return;
+  deletingAttachmentId.value = attachmentId;
+  try {
+    await instructorService.deleteAnnouncementAttachment(props.courseId, editing.value.id, attachmentId);
+    $q.notify({ type: 'positive', message: 'ลบไฟล์สำเร็จ', position: 'top' });
+    // Refresh editing
+    const all = await instructorService.getAnnouncements(props.courseId);
+    editing.value = all.find(a => a.id === editing.value?.id) || null;
+  } catch (error) {
+    $q.notify({ type: 'negative', message: 'ไม่สามารถลบไฟล์ได้', position: 'top' });
+  } finally {
+    deletingAttachmentId.value = null;
+  }
+};
+
+const formatDate = (dateStr: string) => {
+  const date = new Date(dateStr);
+  return date.toLocaleDateString('th-TH', { day: 'numeric', month: 'short', year: 'numeric' });
+};
+
+const formatFileSize = (bytes: number) => {
+  if (bytes < 1024) return bytes + ' B';
+  if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(1) + ' KB';
+  return (bytes / (1024 * 1024)).toFixed(1) + ' MB';
+};
+
+// Fetch on mount
+onMounted(() => {
+  fetchAnnouncements();
+});
+</script>

frontend_management/components/course/InstructorsTab.vue

@@ -0,0 +1,233 @@
+<template>
+  <div>
+    <div class="flex justify-between items-center mb-6">
+      <h2 class="text-xl font-semibold text-gray-900">ผู้สอนในรายวิชา</h2>
+      <q-btn v-if="isPrimaryInstructor" color="primary" icon="person_add" label="เพิ่มผู้สอน" @click="showAddDialog = true" />
+    </div>
+
+    <div v-if="loading" class="flex justify-center py-10">
+      <q-spinner color="primary" size="40px" />
+    </div>
+
+    <div v-else-if="instructors.length === 0" class="text-center py-10 text-gray-500">
+      <q-icon name="group_off" size="60px" color="grey-4" class="mb-4" />
+      <p>ยังไม่มีข้อมูลผู้สอน</p>
+    </div>
+
+    <div v-else class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
+      <q-card v-for="instructor in instructors" :key="instructor.id" flat bordered class="rounded-lg">
+        <q-item>
+          <q-item-section avatar>
+            <q-avatar size="50px" color="primary" text-color="white">
+              <img v-if="instructor.user.avatar_url" :src="instructor.user.avatar_url">
+              <span v-else>{{ instructor.user.username.charAt(0).toUpperCase() }}</span>
+            </q-avatar>
+          </q-item-section>
+
+          <q-item-section>
+            <q-item-label class="text-base font-medium flex items-center gap-2">
+              {{ instructor.user.username }}
+              <q-badge v-if="instructor.is_primary" color="primary" label="หัวหน้าผู้สอน" />
+            </q-item-label>
+            <q-item-label caption>{{ instructor.user.email }}</q-item-label>
+          </q-item-section>
+
+          <q-item-section side v-if="isPrimaryInstructor">
+            <q-btn flat dense round icon="more_vert">
+              <q-menu>
+                <q-item v-if="!instructor.is_primary" clickable v-close-popup @click="setPrimary(instructor.user_id)">
+                  <q-item-section avatar>
+                    <q-icon name="verified_user" color="primary" />
+                  </q-item-section>
+                  <q-item-section>ตั้งเป็นหัวหน้าผู้สอน</q-item-section>
+                </q-item>
+                <q-item clickable v-close-popup @click="removeInstructor(instructor.user_id)" class="text-red">
+                  <q-item-section avatar>
+                    <q-icon name="person_remove" color="red" />
+                  </q-item-section>
+                  <q-item-section>ลบผู้สอน</q-item-section>
+                </q-item>
+              </q-menu>
+            </q-btn>
+          </q-item-section>
+        </q-item>
+      </q-card>
+    </div>
+
+    <!-- Add Instructor Dialog -->
+    <q-dialog v-model="showAddDialog">
+      <q-card style="min-width: 400px">
+        <q-card-section>
+          <div class="text-h6">เพิ่มผู้สอน</div>
+        </q-card-section>
+
+        <q-card-section>
+          <q-select
+            v-model="selectedUser"
+            :options="searchResults"
+            :option-label="(item) => item ? `${item.username} (${item.email})` : ''"
+            label="ค้นหาผู้ใช้"
+            use-input
+            filled
+            @filter="filterUsers"
+            :loading="loadingSearch"
+          >
+            <template v-slot:option="scope">
+              <q-item v-bind="scope.itemProps">
+                <q-item-section avatar>
+                  <q-avatar>
+                    <img v-if="scope.opt.profile?.avatar_url" :src="scope.opt.profile.avatar_url">
+                    <span v-else>{{ scope.opt.username.charAt(0).toUpperCase() }}</span>
+                  </q-avatar>
+                </q-item-section>
+                <q-item-section>
+                  <q-item-label>{{ scope.opt.username }}</q-item-label>
+                  <q-item-label caption>{{ scope.opt.email }}</q-item-label>
+                </q-item-section>
+              </q-item>
+            </template>
+            <template v-slot:no-option>
+              <q-item>
+                <q-item-section class="text-grey">
+                  ไม่พบผู้ใช้
+                </q-item-section>
+              </q-item>
+            </template>
+          </q-select>
+        </q-card-section>
+
+        <q-card-actions align="right">
+          <q-btn flat label="ยกเลิก" color="primary" v-close-popup />
+          <q-btn flat label="เพิ่ม" color="primary" @click="addInstructor" :disable="!selectedUser" :loading="addingInstructor" />
+        </q-card-actions>
+      </q-card>
+    </q-dialog>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useQuasar } from 'quasar';
+import {
+  instructorService,
+  type CourseInstructorResponse,
+  type SearchInstructorResult
+} from '~/services/instructor.service';
+import { useAuthStore } from '~/stores/auth';
+
+interface Props {
+  courseId: number;
+}
+
+const props = defineProps<Props>();
+const $q = useQuasar();
+const authStore = useAuthStore();
+
+// State
+const instructors = ref<CourseInstructorResponse[]>([]);
+const loading = ref(false);
+const showAddDialog = ref(false);
+const selectedUser = ref<SearchInstructorResult | null>(null);
+const searchResults = ref<SearchInstructorResult[]>([]);
+const loadingSearch = ref(false);
+const addingInstructor = ref(false);
+
+// Computed
+const isPrimaryInstructor = computed(() => {
+  if (!authStore.user?.id) return false;
+  const currentUserId = parseInt(authStore.user.id);
+  const myRecord = instructors.value.find(i => i.user_id === currentUserId);
+  return myRecord?.is_primary === true;
+});
+
+// Methods
+const fetchInstructors = async () => {
+  loading.value = true;
+  try {
+    instructors.value = await instructorService.getCourseInstructors(props.courseId);
+  } catch (error) {
+    console.error('Failed to fetch instructors:', error);
+    $q.notify({ type: 'negative', message: 'ไม่สามารถโหลดข้อมูลผู้สอนได้', position: 'top' });
+  } finally {
+    loading.value = false;
+  }
+};
+
+const filterUsers = async (val: string, update: (fn: () => void) => void, abort: () => void) => {
+  if (val.length < 2) {
+    abort();
+    return;
+  }
+  loadingSearch.value = true;
+  try {
+    const results = await instructorService.searchInstructors(val, props.courseId);
+    update(() => {
+      searchResults.value = results;
+    });
+  } catch (error) {
+    console.error('Search failed:', error);
+    abort();
+  } finally {
+    loadingSearch.value = false;
+  }
+};
+
+const addInstructor = async () => {
+  if (!selectedUser.value) return;
+  addingInstructor.value = true;
+  try {
+    await instructorService.addCourseInstructor(props.courseId, selectedUser.value.id);
+    $q.notify({ type: 'positive', message: 'เพิ่มผู้สอนสำเร็จ', position: 'top' });
+    showAddDialog.value = false;
+    selectedUser.value = null;
+    fetchInstructors();
+  } catch (error: any) {
+    $q.notify({ 
+      type: 'negative', 
+      message: error.data?.message || 'ไม่สามารถเพิ่มผู้สอนได้', 
+      position: 'top' 
+    });
+  } finally {
+    addingInstructor.value = false;
+  }
+};
+
+const setPrimary = async (userId: number) => {
+  try {
+    await instructorService.setPrimaryInstructor(props.courseId, userId);
+    $q.notify({ type: 'positive', message: 'ตั้งเป็นหัวหน้าผู้สอนสำเร็จ', position: 'top' });
+    fetchInstructors();
+  } catch (error: any) {
+    $q.notify({ 
+      type: 'negative', 
+      message: error.data?.message || 'ไม่สามารถตั้งเป็นหัวหน้าผู้สอนได้', 
+      position: 'top' 
+    });
+  }
+};
+
+const removeInstructor = async (userId: number) => {
+  $q.dialog({
+    title: 'ยืนยันการลบ',
+    message: 'คุณต้องการลบผู้สอนคนนี้หรือไม่?',
+    cancel: true,
+    persistent: true
+  }).onOk(async () => {
+    try {
+      await instructorService.removeCourseInstructor(props.courseId, userId);
+      $q.notify({ type: 'positive', message: 'ลบผู้สอนสำเร็จ', position: 'top' });
+      fetchInstructors();
+    } catch (error: any) {
+      $q.notify({ 
+        type: 'negative', 
+        message: error.data?.message || 'ไม่สามารถลบผู้สอนได้', 
+        position: 'top' 
+      });
+    }
+  });
+};
+
+// Fetch on mount
+onMounted(() => {
+  fetchInstructors();
+});
+</script>

frontend_management/components/course/QuizResultsTab.vue

@@ -0,0 +1,470 @@
+<template>
+  <div>
+    <!-- No Quizzes State -->
+    <div v-if="quizzes.length === 0" class="text-center py-10 text-gray-500">
+      <q-icon name="quiz" size="60px" color="grey-4" class="mb-4" />
+      <p>หลักสูตรนี้ยังไม่มีแบบทดสอบ</p>
+    </div>
+
+    <!-- Quiz Selection -->
+    <div v-else class="space-y-6">
+      <div class="flex flex-col md:flex-row items-center gap-4 bg-white p-4 rounded-lg border border-gray-200">
+        <div class="flex-1 w-full">
+          <label class="block text-sm font-medium text-gray-700 mb-1">เลือกแบบทดสอบ</label>
+          <q-select
+            v-model="selectedQuiz"
+            :options="quizzes"
+            option-label="label"
+            outlined
+            dense
+            emit-value
+            map-options
+            class="bg-white"
+            @update:model-value="handleQuizChange"
+          />
+        </div>
+      </div>
+      
+      <!-- Search and Filter -->
+      <q-card flat bordered class="rounded-lg mb-6" v-if="selectedQuiz">
+        <q-card-section>
+          <div class="flex flex-col md:flex-row gap-4">
+            <q-input
+              v-model="search"
+              outlined
+              dense
+              placeholder="ค้นหาผู้เรียน..."
+              class="flex-1"
+              debounce="600"
+              @update:model-value="handleSearch"
+            >
+              <template v-slot:prepend>
+                <q-icon name="search" />
+              </template>
+              <template v-slot:append v-if="search">
+                <q-icon name="close" class="cursor-pointer" @click="search = ''; handleSearch()" />
+              </template>
+            </q-input>
+            
+            <q-select
+              v-model="statusFilter"
+              outlined
+              dense
+              :options="statusFilterOptions"
+              option-value="value"
+              option-label="label"
+              emit-value
+              map-options
+              class="w-full md:w-40"
+              @update:model-value="handleSearch"
+            />
+
+            <q-select
+              v-model="pagination.rowsPerPage"
+              :options="limitOptions"
+              option-value="value"
+              option-label="label"
+              outlined
+              dense
+              emit-value
+              map-options
+              label="จำนวนต่อหน้า"
+              class="w-full md:w-32"
+              @update:model-value="handleLimitChange"
+            />
+          </div>
+        </q-card-section>
+      </q-card>
+
+      <!-- Stats Cards -->
+      <div v-if="stats" class="grid grid-cols-1 md:grid-cols-3 gap-4">
+        <q-card flat bordered class="bg-blue-50 border-blue-100">
+          <q-card-section>
+            <div class="text-blue-800 text-sm font-medium">คะแนนเฉลี่ย</div>
+            <div class="text-2xl font-bold text-blue-900 mt-1">
+              {{ stats.averageScore.toFixed(1) }} / {{ stats.totalScore }}
+            </div>
+          </q-card-section>
+        </q-card>
+        
+        <q-card flat bordered class="bg-green-50 border-green-100">
+          <q-card-section>
+            <div class="text-green-800 text-sm font-medium">ผู้ที่สอบผ่าน</div>
+            <div class="text-2xl font-bold text-green-900 mt-1">
+              {{ stats.passCount }} คน
+              <span class="text-sm font-normal text-green-700">({{ stats.passRate.toFixed(1) }}%)</span>
+            </div>
+          </q-card-section>
+        </q-card>
+
+        <q-card flat bordered class="bg-purple-50 border-purple-100">
+          <q-card-section>
+            <div class="text-purple-800 text-sm font-medium">จำนวนผู้เข้าสอบ</div>
+            <div class="text-2xl font-bold text-purple-900 mt-1">
+              {{ stats.totalStudents }} คน
+            </div>
+          </q-card-section>
+        </q-card>
+      </div>
+
+      <!-- Students Table -->
+      <div v-if="selectedQuiz">
+        <q-table
+          :rows="students"
+          :columns="columns"
+          row-key="user_id"
+          :loading="loading"
+          flat
+          bordered
+          hide-pagination
+          :pagination="pagination"
+          no-data-label="ยังไม่มีข้อมูล"
+        >
+          <template v-slot:body="props">
+            <q-tr :props="props" @click="openStudentDetail(props.row.user_id)" class="cursor-pointer hover:bg-gray-50">
+              <q-td key="student" :props="props">
+                <div class="flex items-center gap-3">
+                  <q-avatar size="32px">
+                    <img :src="props.row.avatar_url || 'https://cdn.quasar.dev/img/boy-avatar.png'" />
+                  </q-avatar>
+                  <div>
+                    <div class="font-medium">{{ props.row.first_name }} {{ props.row.last_name }}</div>
+                    <div class="text-xs text-gray-500">{{ props.row.email }}</div>
+                  </div>
+                </div>
+              </q-td>
+              <q-td key="score" :props="props" class="text-center">
+                <div class="font-medium">
+                  {{ props.row.best_score }} / {{ currentQuizData?.total_score }}
+                </div>
+              </q-td>
+              <q-td key="status" :props="props" class="text-center">
+                <q-chip
+                  :color="props.row.is_passed ? 'green-1' : 'red-1'"
+                  :text-color="props.row.is_passed ? 'green-9' : 'red-9'"
+                  size="md"
+                >
+                  {{ props.row.is_passed ? 'ผ่าน' : 'ไม่ผ่าน' }}
+                </q-chip>
+              </q-td>
+              <q-td key="attempts" :props="props" class="text-center">
+                {{ props.row.total_attempts }} ครั้ง
+              </q-td>
+              <q-td key="last_attempt" :props="props">
+                <div v-if="props.row.latest_attempt">
+                  {{ formatDate(props.row.latest_attempt.completed_at) }}
+                </div>
+                <div v-else class="text-gray-400">-</div>
+              </q-td>
+            </q-tr>
+          </template>
+        </q-table>
+
+         <!-- Custom Pagination -->
+        <div v-if="pagination.rowsNumber > pagination.rowsPerPage" class="flex justify-center mt-4">
+          <q-pagination
+            v-model="pagination.page"
+            :max="Math.ceil(pagination.rowsNumber / pagination.rowsPerPage)"
+            :max-pages="6"
+            direction-links
+            boundary-links
+            @update:model-value="handlePageChange"
+          />
+        </div>
+      </div>
+    </div>
+
+    <!-- Student Quiz Detail Dialog -->
+    <q-dialog v-model="showDetailDialog" maximized transition-show="slide-up" transition-hide="slide-down">
+      <q-card class="bg-gray-50">
+        <q-card-section class="bg-white shadow-sm sticky top-0 z-10">
+          <div class="flex justify-between items-center">
+            <div class="flex items-center gap-4" v-if="attemptDetail">
+              <q-avatar size="48px" color="primary" text-color="white">
+                <img v-if="attemptDetail.student.user_id" :src="`https://ui-avatars.com/api/?name=${attemptDetail.student.first_name}+${attemptDetail.student.last_name}`" /> 
+                <span v-else>{{ attemptDetail.student.username.charAt(0).toUpperCase() }}</span> 
+              </q-avatar>
+              <div>
+                <h2 class="text-xl font-semibold">{{ attemptDetail.student.first_name }} {{ attemptDetail.student.last_name }}</h2>
+                <div class="text-gray-500 text-sm">
+                  {{ attemptDetail.student.email }} · ครั้งที่ {{ attemptDetail.attempt_number }}
+                </div>
+              </div>
+            </div>
+             <div v-else class="h-12 w-48 bg-gray-200 animate-pulse rounded"></div>
+            <q-btn icon="close" flat round dense v-close-popup />
+          </div>
+        </q-card-section>
+
+        <q-card-section class="p-6 max-w-4xl mx-auto w-full">
+          <div v-if="loadingDetail" class="flex justify-center py-20">
+            <q-spinner color="primary" size="50px" />
+          </div>
+
+          <div v-else-if="attemptDetail" class="space-y-6">
+            <!-- Summary Stats -->
+            <div class="grid grid-cols-1 md:grid-cols-4 gap-4">
+              <q-card flat bordered class="text-center p-4">
+                <div class="text-gray-500 text-sm mb-1">คะแนนที่ได้</div>
+                <div class="text-3xl font-bold" :class="attemptDetail.is_passed ? 'text-green-600' : 'text-red-600'">
+                  {{ attemptDetail.score }} / {{ attemptDetail.total_score }}
+                </div>
+              </q-card>
+              <q-card flat bordered class="text-center p-4">
+                 <div class="text-gray-500 text-sm mb-1">สถานะ</div>
+                 <q-chip
+                  :color="attemptDetail.is_passed ? 'green-1' : 'red-1'"
+                  :text-color="attemptDetail.is_passed ? 'green-9' : 'red-9'"
+                  class="font-bold"
+                >
+                  {{ attemptDetail.is_passed ? 'ผ่าน' : 'ไม่ผ่าน' }}
+                </q-chip>
+              </q-card>
+               <q-card flat bordered class="text-center p-4">
+                <div class="text-gray-500 text-sm mb-1">ตอบถูก</div>
+                <div class="text-xl font-semibold">
+                  {{ attemptDetail.correct_answers }} / {{ attemptDetail.total_questions }} ข้อ
+                </div>
+              </q-card>
+               <q-card flat bordered class="text-center p-4">
+                <div class="text-gray-500 text-sm mb-1">วันที่ทำ</div>
+                <div class="text-xl font-semibold">
+                  {{ formatDate(attemptDetail.completed_at) }}
+                  <!-- Note: Ideally calculate duration if started_at is available -->
+                </div>
+              </q-card>
+            </div>
+
+            <!-- Questions Review -->
+            <div class="bg-white rounded-lg shadow-sm border border-gray-200 overflow-hidden">
+              <div class="p-4 border-b bg-gray-50 font-semibold text-gray-700">
+                รายละเอียดการตอบคำถาม
+              </div>
+              <div class="divide-y">
+                <div 
+                  v-for="(answer, index) in attemptDetail.answers_review" 
+                  :key="answer.question_id"
+                  class="p-6"
+                >
+                  <div class="flex gap-4">
+                    <div class="flex-none">
+                      <div class="w-8 h-8 rounded-full flex items-center justify-center font-bold text-white"
+                        :class="answer.is_correct ? 'bg-green-500' : 'bg-red-500'"
+                      >
+                        {{ index + 1 }}
+                      </div>
+                    </div>
+                    <div class="flex-1">
+                      <div class="font-medium text-lg mb-3">{{ answer.question_text?.th || 'ไม่สามารถโหลดคำถามได้' }}</div>
+                      
+                      <div class="p-3 rounded-lg border-l-4" 
+                        :class="answer.is_correct ? 'bg-green-50 border-green-500' : 'bg-red-50 border-red-500'"
+                      >
+                        <div class="text-sm text-gray-500 mb-1">คำตอบที่เลือก:</div>
+                        <div class="font-medium" :class="answer.is_correct ? 'text-green-800' : 'text-red-800'">
+                          {{ answer.selected_choice_text?.th || '-' }}
+                        </div>
+                      </div>
+                      <div class="mt-2 text-right text-sm text-gray-500">
+                        คะแนน: {{ answer.score }} / {{ answer.question_score }}
+                      </div>
+                    </div>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
+        </q-card-section>
+      </q-card>
+    </q-dialog>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useQuasar } from 'quasar';
+import { 
+  instructorService, 
+  type ChapterResponse,
+  type QuizScoreStudentResponse,
+  type QuizScoresData,
+  type QuizAttemptDetailData
+} from '~/services/instructor.service';
+
+interface Props {
+  courseId: number;
+  chapters: ChapterResponse[];
+}
+
+const props = defineProps<Props>();
+const $q = useQuasar();
+
+// Columns
+const columns = [
+  { name: 'student', label: 'ผู้เรียน', align: 'left' as const, field: 'first_name' },
+  { name: 'score', label: 'คะแนนที่ดีที่สุด', align: 'center' as const, field: 'best_score' },
+  { name: 'status', label: 'สถานะ', align: 'center' as const, field: 'is_passed' },
+  { name: 'attempts', label: 'จำนวนครั้งที่สอบ', align: 'center' as const, field: 'total_attempts' },
+  { name: 'last_attempt', label: 'สอบล่าสุดเมื่อ', align: 'left' as const, field: 'latest_attempt' },
+];
+
+// State
+const selectedQuiz = ref<any>(null); // Option object
+const loading = ref(false);
+const students = ref<QuizScoreStudentResponse[]>([]);
+const currentQuizData = ref<QuizScoresData | null>(null);
+const search = ref('');
+const statusFilter = ref('all');
+
+// Student Detail Dialog
+const showDetailDialog = ref(false);
+const loadingDetail = ref(false);
+const attemptDetail = ref<QuizAttemptDetailData | null>(null);
+
+const pagination = ref({
+  page: 1,
+  rowsPerPage: 20,
+  rowsNumber: 0
+});
+
+const limitOptions = [
+  { label: '5 รายการ', value: 5 },
+  { label: '10 รายการ', value: 10 },
+  { label: '20 รายการ', value: 20 },
+  { label: '50 รายการ', value: 50 },
+];
+
+const statusFilterOptions = [
+  { label: 'ทั้งหมด', value: 'all' },
+  { label: 'ผ่าน', value: 'passed' },
+  { label: 'ไม่ผ่าน', value: 'failed' }
+];
+
+// Computed
+const quizzes = computed(() => {
+  const list: any[] = [];
+  props.chapters.forEach(chapter => {
+    chapter.lessons.forEach(lesson => {
+      // Assuming lesson.type === 'QUIZ' identifies a quiz
+      // Also checking if quiz object exists might be safer if type is not strictly enforcing it
+      if (lesson.type === 'QUIZ') {
+        list.push({
+          label: `${chapter.title.th} - ${lesson.title.th}`,
+          value: lesson.id,
+          total_score: lesson.quiz?.questions ? lesson.quiz.questions.reduce((sum, q) => sum + (q.score || 0), 0) : 0
+        });
+      }
+    });
+  });
+  return list;
+});
+
+const stats = computed(() => {
+  if (!currentQuizData.value || !students.value.length) return null;
+  
+  // Basic stats logic from current page data or explicit API data if available
+  const passed = students.value.filter(s => s.is_passed).length;
+  const avg = students.value.reduce((sum, s) => sum + s.best_score, 0) / students.value.length;
+  
+  return {
+    totalStudents: pagination.value.rowsNumber, // Total from API
+    passCount: passed, 
+    averageScore: avg || 0,
+    totalScore: currentQuizData.value.total_score,
+    passRate: (passed / students.value.length) * 100 || 0
+  };
+});
+
+// Methods
+const handleQuizChange = () => {
+  pagination.value.page = 1;
+  search.value = '';
+  statusFilter.value = 'all';
+  fetchScores();
+};
+
+const handleSearch = () => {
+  pagination.value.page = 1;
+  fetchScores();
+};
+
+const handleLimitChange = () => {
+  pagination.value.page = 1;
+  fetchScores();
+};
+
+const handlePageChange = (vals:any) => {
+    fetchScores();
+}
+
+const fetchScores = async () => {
+  if (!selectedQuiz.value) return;
+  
+  loading.value = true;
+  try {
+    let isPassed: boolean | undefined = undefined;
+    if (statusFilter.value === 'passed') isPassed = true;
+    if (statusFilter.value === 'failed') isPassed = false;
+
+    const response = await instructorService.getLessonQuizScores(
+      props.courseId, 
+      selectedQuiz.value, 
+      pagination.value.page, 
+      pagination.value.rowsPerPage,
+      search.value,
+      isPassed
+    );
+    
+    currentQuizData.value = response.data;
+    students.value = response.data.students;
+    
+    pagination.value.rowsNumber = response.total;
+  } catch (error) {
+    console.error('Failed to fetch quiz scores:', error);
+    $q.notify({ type: 'negative', message: 'ไม่สามารถโหลดผลสอบได้', position: 'top' });
+  } finally {
+    loading.value = false;
+  }
+};
+
+const openStudentDetail = async (studentId: number) => {
+  showDetailDialog.value = true;
+  loadingDetail.value = true;
+  attemptDetail.value = null;
+
+  try {
+    // Assuming we want the detail for the current lesson/quiz
+    const response = await instructorService.getStudentQuizAttemptDetail(
+      props.courseId,
+      selectedQuiz.value,
+      studentId
+    );
+    attemptDetail.value = response.data;
+  } catch (error) {
+    console.error('Failed to fetch student quiz detail:', error);
+    $q.notify({ type: 'negative', message: 'ไม่สามารถโหลดรายละเอียดการสอบได้', position: 'top' });
+    showDetailDialog.value = false;
+  } finally {
+    loadingDetail.value = false;
+  }
+};
+
+const formatDate = (dateStr: string) => {
+  if (!dateStr) return '-';
+  const date = new Date(dateStr);
+  return date.toLocaleDateString('th-TH', { 
+    day: 'numeric', 
+    month: 'short', 
+    year: 'numeric',
+    hour: '2-digit',
+    minute: '2-digit'
+  });
+};
+
+// Lifecycle
+onMounted(() => {
+  if (quizzes.value.length > 0) {
+    selectedQuiz.value = quizzes.value[0].value;
+    fetchScores();
+  }
+});
+</script>

frontend_management/components/course/StructureTab.vue

@@ -0,0 +1,107 @@
+<template>
+  <div>
+    <div class="flex justify-between items-center mb-6">
+      <h2 class="text-xl font-semibold text-gray-900">โครงสร้างบทเรียน</h2>
+      <q-btn
+        color="primary"
+        label="จัดการโครงสร้าง"
+        @click="navigateTo(`/instructor/courses/${courseId}/structure`)"
+      />
+    </div>
+
+    <!-- Chapters -->
+    <div v-if="chapters.length === 0" class="text-center py-10 text-gray-500">
+      ยังไม่มีบทเรียน
+    </div>
+
+    <div v-else class="space-y-4">
+      <q-card
+        v-for="chapter in sortedChapters"
+        :key="chapter.id"
+        flat
+        bordered
+        class="rounded-lg"
+      >
+        <q-card-section>
+          <div class="flex items-center justify-between">
+            <div>
+              <div class="font-semibold text-gray-900">
+                Chapter {{ chapter.sort_order }}: {{ chapter.title.th }}
+              </div>
+              <div class="text-sm text-gray-500 mt-1">
+                {{ chapter.lessons.length }} บทเรียน · {{ getChapterDuration(chapter) }} นาที
+              </div>
+            </div>
+          </div>
+        </q-card-section>
+
+        <!-- Lessons -->
+        <q-list separator class="border-t">
+          <q-item
+            v-for="lesson in getSortedLessons(chapter)"
+            :key="lesson.id"
+            class="py-3"
+          >
+            <q-item-section avatar>
+              <q-icon
+                :name="getLessonIcon(lesson.type)"
+                :color="getLessonIconColor(lesson.type)"
+              />
+            </q-item-section>
+            <q-item-section>
+              <q-item-label>
+                Lesson {{ chapter.sort_order }}.{{ lesson.sort_order }}: {{ lesson.title.th }}
+              </q-item-label>
+            </q-item-section>
+            <q-item-section side>
+              <span class="text-sm text-gray-500">{{ lesson.duration_minutes }} นาที</span>
+            </q-item-section>
+          </q-item>
+        </q-list>
+      </q-card>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import type { ChapterResponse } from '~/services/instructor.service';
+
+interface Props {
+  courseId: number;
+  chapters: ChapterResponse[];
+}
+
+const props = defineProps<Props>();
+
+// Computed
+const sortedChapters = computed(() => {
+  return props.chapters.slice().sort((a, b) => a.sort_order - b.sort_order);
+});
+
+// Methods
+const getChapterDuration = (chapter: ChapterResponse) => {
+  return chapter.lessons.reduce((sum, l) => sum + l.duration_minutes, 0);
+};
+
+const getSortedLessons = (chapter: ChapterResponse) => {
+  return chapter.lessons.slice().sort((a, b) => a.sort_order - b.sort_order);
+};
+
+const getLessonIcon = (type: string) => {
+  const icons: Record<string, string> = {
+    VIDEO: 'play_circle',
+    DOCUMENT: 'description',
+    QUIZ: 'quiz'
+  };
+  return icons[type] || 'article';
+};
+
+const getLessonIconColor = (type: string) => {
+  const colors: Record<string, string> = {
+    VIDEO: 'blue',
+    DOCUMENT: 'orange',
+    QUIZ: 'orange'
+  };
+  return colors[type] || 'grey';
+};
+</script>

frontend_management/components/course/StudentsTab.vue

@@ -0,0 +1,447 @@
+<template>
+  <div>
+    <!-- Stats Cards -->
+    <div class="grid grid-cols-1 md:grid-cols-2 gap-4 mb-6">
+      <q-card flat bordered class="rounded-lg">
+        <q-card-section class="text-center py-6">
+          <div class="text-4xl font-bold text-primary">{{ pagination.total }}</div>
+          <div class="text-gray-500 mt-1">ผู้เรียนทั้งหมด</div>
+        </q-card-section>
+      </q-card>
+      <q-card flat bordered class="rounded-lg">
+        <q-card-section class="text-center py-6">
+          <div class="text-4xl font-bold text-green-600">{{ completedCount }}</div>
+          <div class="text-gray-500 mt-1">จบหลักสูตร</div>
+        </q-card-section>
+      </q-card>
+    </div>
+
+    <!-- Search and Filter -->
+    <q-card flat bordered class="rounded-lg mb-6">
+      <q-card-section>
+        <div class="flex flex-col md:flex-row gap-4">
+          <q-input
+            v-model="search"
+            outlined
+            dense
+            placeholder="ค้นหาผู้เรียน..."
+            class="flex-1"
+            debounce="600"
+            @update:model-value="handleSearch"
+          >
+            <template v-slot:prepend>
+              <q-icon name="search" />
+            </template>
+            <template v-slot:append v-if="search">
+              <q-icon name="close" class="cursor-pointer" @click="search = ''; handleSearch()" />
+            </template>
+          </q-input>
+          <q-select
+            v-model="statusFilter"
+            outlined
+            dense
+            :options="statusFilterOptions"
+            option-value="value"
+            option-label="label"
+            emit-value
+            map-options
+            class="w-full md:w-40"
+            @update:model-value="handleSearch"
+          />
+          <q-select
+            v-model="pagination.limit"
+            outlined
+            dense
+            :options="limitOptions"
+            option-value="value"
+            option-label="label"
+            emit-value
+            map-options
+            class="w-full md:w-32"
+            @update:model-value="handleLimitChange"
+          />
+        </div>
+      </q-card-section>
+    </q-card>
+
+    <div v-if="loading" class="flex justify-center py-10">
+      <q-spinner color="primary" size="40px" />
+    </div>
+
+    <div v-else-if="filteredStudents.length === 0" class="text-center py-10 text-gray-500">
+      <q-icon name="people" size="60px" color="grey-4" class="mb-4" />
+      <p>{{ search || statusFilter !== 'all' ? 'ไม่พบผู้เรียนที่ค้นหา' : 'ยังไม่มีผู้เรียนในหลักสูตรนี้' }}</p>
+    </div>
+
+    <div v-else>
+      <!-- Students Table -->
+      <q-card flat bordered class="rounded-lg">
+        <q-list separator>
+          <q-item 
+            v-for="student in filteredStudents" 
+            :key="student.user_id" 
+            class="py-4 cursor-pointer hover:bg-gray-50 transition-colors"
+            clickable
+            @click="openStudentDetail(student.user_id)"
+          >
+            <q-item-section avatar>
+              <q-avatar size="50px" color="primary" text-color="white">
+                <img v-if="student.avatar_url" :src="student.avatar_url" />
+                <span v-else>{{ student.username.charAt(0).toUpperCase() }}</span>
+              </q-avatar>
+            </q-item-section>
+
+            <q-item-section>
+              <q-item-label class="text-base font-medium">
+                {{ student.first_name }} {{ student.last_name }}
+              </q-item-label>
+              <q-item-label caption>{{ student.email }}</q-item-label>
+            </q-item-section>
+
+            <q-item-section>
+              <q-item-label caption class="mb-1">ความคืบหน้า</q-item-label>
+              <div class="flex items-center gap-2">
+                <q-linear-progress
+                  :value="student.progress_percentage / 100"
+                  color="primary"
+                  track-color="grey-3"
+                  class="flex-1"
+                  rounded
+                  size="8px"
+                />
+                <span class="text-sm text-gray-600 w-12 text-right">{{ student.progress_percentage }}%</span>
+              </div>
+            </q-item-section>
+
+            <q-item-section side>
+              <q-badge :color="getStudentStatusColor(student.status)">
+                {{ getStudentStatusLabel(student.status) }}
+              </q-badge>
+              <q-item-label caption class="mt-1">
+                ลงทะเบียน {{ formatEnrollDate(student.enrolled_at) }}
+              </q-item-label>
+            </q-item-section>
+          </q-item>
+        </q-list>
+      </q-card>
+
+      <!-- Pagination -->
+      <div v-if="pagination.total > pagination.limit" class="flex justify-center mt-4">
+        <q-pagination
+          v-model="pagination.page"
+          :max="Math.ceil(pagination.total / pagination.limit)"
+          :max-pages="6"
+          direction-links
+          boundary-links
+          @update:model-value="fetchStudents"
+        />
+      </div>
+    </div>
+
+    <!-- Student Progress Detail Modal -->
+    <q-dialog v-model="showDetailModal" maximized transition-show="slide-up" transition-hide="slide-down">
+      <q-card class="bg-gray-50">
+        <!-- Header -->
+        <q-card-section class="bg-white shadow-sm">
+          <div class="flex justify-between items-center">
+            <div class="flex items-center gap-4" v-if="studentDetail">
+              <q-avatar size="60px" color="primary" text-color="white">
+                <img v-if="studentDetail.student.avatar_url" :src="studentDetail.student.avatar_url" />
+                <span v-else>{{ studentDetail.student.username.charAt(0).toUpperCase() }}</span>
+              </q-avatar>
+              <div>
+                <h2 class="text-xl font-semibold">{{ studentDetail.student.first_name }} {{ studentDetail.student.last_name }}</h2>
+                <p class="text-gray-500">{{ studentDetail.student.email }}</p>
+              </div>
+            </div>
+            <q-btn icon="close" flat round dense v-close-popup />
+          </div>
+        </q-card-section>
+
+        <!-- Loading State -->
+        <div v-if="loadingDetail" class="flex justify-center items-center py-20">
+          <q-spinner color="primary" size="50px" />
+        </div>
+
+        <!-- Content -->
+        <q-card-section v-else-if="studentDetail" class="q-pa-lg">
+          <!-- Progress Summary Bar -->
+          <q-card flat bordered class="mb-6 rounded-lg bg-white">
+            <q-card-section>
+              <div class="flex items-center justify-between mb-3">
+                <span class="text-gray-600">ความคืบหน้าทั้งหมด</span>
+                <div class="flex items-center gap-3">
+                  <q-badge :color="getStudentStatusColor(studentDetail.enrollment.status)">
+                    {{ getStudentStatusLabel(studentDetail.enrollment.status) }}
+                  </q-badge>
+                  <span class="font-semibold text-lg">{{ studentDetail.enrollment.progress_percentage }}%</span>
+                </div>
+              </div>
+              <q-linear-progress
+                :value="studentDetail.enrollment.progress_percentage / 100"
+                color="primary"
+                track-color="grey-3"
+                rounded
+                size="12px"
+              />
+              <div class="flex justify-between mt-2 text-sm text-gray-500">
+                <span>เรียนจบ {{ studentDetail.total_completed_lessons }} / {{ studentDetail.total_lessons }} บทเรียน</span>
+                <span>ลงทะเบียน {{ formatEnrollDate(studentDetail.enrollment.enrolled_at) }}</span>
+              </div>
+            </q-card-section>
+          </q-card>
+
+          <!-- Chapters & Lessons -->
+          <div class="space-y-4">
+            <q-expansion-item
+              v-for="chapter in studentDetail.chapters"
+              :key="chapter.chapter_id"
+              group="chapters"
+              class="bg-white rounded-lg shadow-sm overflow-hidden"
+              expand-separator
+              dense
+            >
+              <template v-slot:header>
+                <q-item-section avatar>
+                  <q-circular-progress
+                    :value="chapter.total_lessons > 0 ? (chapter.completed_lessons / chapter.total_lessons) * 100 : 0"
+                    size="45px"
+                    :thickness="0.15"
+                    color="primary"
+                    track-color="grey-3"
+                    show-value
+                    class="text-primary"
+                  >
+                    <span class="text-xs">{{ chapter.completed_lessons }}/{{ chapter.total_lessons }}</span>
+                  </q-circular-progress>
+                </q-item-section>
+                <q-item-section>
+                  <q-item-label class="font-medium">{{ chapter.chapter_title.th }}</q-item-label>
+                  <q-item-label caption>{{ chapter.completed_lessons }} จาก {{ chapter.total_lessons }} บทเรียน</q-item-label>
+                </q-item-section>
+              </template>
+
+              <!-- Lessons List -->
+              <q-list separator class="bg-gray-50">
+                <q-item v-for="lesson in chapter.lessons" :key="lesson.lesson_id" class="py-3">
+                  <q-item-section avatar>
+                    <q-icon
+                      :name="lesson.is_completed ? 'check_circle' : 'radio_button_unchecked'"
+                      :color="lesson.is_completed ? 'green' : 'grey'"
+                      size="24px"
+                    />
+                  </q-item-section>
+                  <q-item-section>
+                    <q-item-label>{{ lesson.lesson_title.th }}</q-item-label>
+                    <q-item-label caption class="flex items-center gap-2">
+                      <q-icon :name="getLessonTypeIcon(lesson.lesson_type)" size="14px" />
+                      {{ getLessonTypeLabel(lesson.lesson_type) }}
+                      <template v-if="lesson.lesson_type === 'VIDEO' && lesson.video_duration_seconds > 0">
+                        • {{ formatVideoTime(lesson.video_progress_seconds) }} / {{ formatVideoTime(lesson.video_duration_seconds) }}
+                        ({{ lesson.video_progress_percentage }}%)
+                      </template>
+                    </q-item-label>
+                  </q-item-section>
+                  <q-item-section side v-if="lesson.is_completed">
+                    <q-item-label caption class="text-green-600">
+                      เสร็จ {{ formatCompletedDate(lesson.completed_at) }}
+                    </q-item-label>
+                  </q-item-section>
+                  <q-item-section side v-else-if="lesson.lesson_type === 'VIDEO' && lesson.video_progress_percentage > 0">
+                    <q-linear-progress
+                      :value="lesson.video_progress_percentage / 100"
+                      color="primary"
+                      size="6px"
+                      class="w-20"
+                      rounded
+                    />
+                  </q-item-section>
+                </q-item>
+              </q-list>
+            </q-expansion-item>
+          </div>
+        </q-card-section>
+      </q-card>
+    </q-dialog>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useQuasar } from 'quasar';
+import {
+  instructorService,
+  type EnrolledStudentResponse,
+  type StudentDetailData
+} from '~/services/instructor.service';
+
+interface Props {
+  courseId: number;
+}
+
+const props = defineProps<Props>();
+const $q = useQuasar();
+
+// State
+const students = ref<EnrolledStudentResponse[]>([]);
+const loading = ref(false);
+const search = ref('');
+const statusFilter = ref('all');
+const completedCount = ref(0);
+const pagination = ref({
+  page: 1,
+  limit: 20,
+  total: 0
+});
+
+// Student Detail Modal
+const showDetailModal = ref(false);
+const loadingDetail = ref(false);
+const studentDetail = ref<StudentDetailData | null>(null);
+
+// Options
+const statusFilterOptions = [
+  { label: 'สถานะทั้งหมด', value: 'all' },
+  { label: 'กำลังเรียน', value: 'ENROLLED' },
+  { label: 'เรียนจบแล้ว', value: 'COMPLETED' }
+];
+
+const limitOptions = [
+  { label: '5 รายการ', value: 5 },
+  { label: '10 รายการ', value: 10 },
+  { label: '20 รายการ', value: 20 },
+  { label: '50 รายการ', value: 50 }
+];
+
+// Computed
+const filteredStudents = computed(() => {
+  let result = students.value;
+  
+  if (search.value) {
+    const query = search.value.toLowerCase();
+    result = result.filter(s => 
+      s.first_name.toLowerCase().includes(query) ||
+      s.last_name.toLowerCase().includes(query) ||
+      s.email.toLowerCase().includes(query) ||
+      s.username.toLowerCase().includes(query)
+    );
+  }
+  
+  if (statusFilter.value !== 'all') {
+    result = result.filter(s => s.status === statusFilter.value);
+  }
+  
+  return result;
+});
+
+// Methods
+const fetchStudents = async (page: number = 1) => {
+  loading.value = true;
+  try {
+    const response = await instructorService.getEnrolledStudents(
+      props.courseId,
+      page,
+      pagination.value.limit,
+      search.value,
+      statusFilter.value
+    );
+    students.value = response.data;
+    pagination.value = {
+      page: response.page,
+      limit: response.limit,
+      total: response.total
+    };
+    completedCount.value = students.value.filter(s => s.status === 'COMPLETED').length;
+  } catch (error) {
+    console.error('Failed to fetch students:', error);
+    $q.notify({ type: 'negative', message: 'ไม่สามารถโหลดข้อมูลผู้เรียนได้', position: 'top' });
+  } finally {
+    loading.value = false;
+  }
+};
+
+const handleSearch = () => {
+  pagination.value.page = 1;
+  fetchStudents(1);
+};
+
+const handleLimitChange = () => {
+  pagination.value.page = 1;
+  fetchStudents(1);
+};
+
+const openStudentDetail = async (studentId: number) => {
+  showDetailModal.value = true;
+  loadingDetail.value = true;
+  studentDetail.value = null;
+  
+  try {
+    studentDetail.value = await instructorService.getStudentDetail(props.courseId, studentId);
+  } catch (error) {
+    console.error('Failed to fetch student detail:', error);
+    $q.notify({ type: 'negative', message: 'ไม่สามารถโหลดข้อมูลผู้เรียนได้', position: 'top' });
+    showDetailModal.value = false;
+  } finally {
+    loadingDetail.value = false;
+  }
+};
+
+const getStudentStatusColor = (status: string) => {
+  const colors: Record<string, string> = {
+    ENROLLED: 'blue',
+    COMPLETED: 'green',
+    DROPPED: 'red'
+  };
+  return colors[status] || 'grey';
+};
+
+const getStudentStatusLabel = (status: string) => {
+  const labels: Record<string, string> = {
+    ENROLLED: 'กำลังเรียน',
+    COMPLETED: 'เรียนจบแล้ว',
+    DROPPED: 'ยกเลิก'
+  };
+  return labels[status] || status;
+};
+
+const formatEnrollDate = (dateStr: string) => {
+  const date = new Date(dateStr);
+  return date.toLocaleDateString('th-TH', { day: 'numeric', month: 'short', year: 'numeric' });
+};
+
+const getLessonTypeIcon = (type: string) => {
+  const icons: Record<string, string> = {
+    VIDEO: 'play_circle',
+    DOCUMENT: 'description',
+    QUIZ: 'quiz',
+    ASSIGNMENT: 'assignment'
+  };
+  return icons[type] || 'article';
+};
+
+const getLessonTypeLabel = (type: string) => {
+  const labels: Record<string, string> = {
+    VIDEO: 'วิดีโอ',
+    DOCUMENT: 'เอกสาร',
+    QUIZ: 'แบบทดสอบ',
+    ASSIGNMENT: 'แบบฝึกหัด'
+  };
+  return labels[type] || type;
+};
+
+const formatVideoTime = (seconds: number) => {
+  const mins = Math.floor(seconds / 60);
+  const secs = Math.floor(seconds % 60);
+  return `${mins}:${secs.toString().padStart(2, '0')}`;
+};
+
+const formatCompletedDate = (dateStr: string | null) => {
+  if (!dateStr) return '-';
+  const date = new Date(dateStr);
+  return date.toLocaleDateString('th-TH', { day: 'numeric', month: 'short' });
+};
+
+// Fetch on mount
+onMounted(() => {
+  fetchStudents();
+});
+</script>