feat: add useCourse composable with functions for fetching, enrolling, and managing course data.

Frontend-Learner/composables/useCourse.ts

@@ -163,11 +163,61 @@ export const useCourse = () => {
         }
     }
 
+    const fetchCourseLearningInfo = async (courseId: number) => {
+        try {
+            const data = await $fetch<{ code: number; message: string; data: any }>(`${API_BASE_URL}/students/courses/${courseId}/learn`, {
+                method: 'GET',
+                headers: token.value ? {
+                    Authorization: `Bearer ${token.value}`
+                } : {}
+            })
+
+            return {
+                success: true,
+                data: data.data
+            }
+        } catch (err: any) {
+            console.error('Fetch course learning info failed:', err)
+            return {
+                success: false,
+                error: err.data?.message || err.message || 'Error fetching course learning info',
+                code: err.data?.code
+            }
+    }
+    }
+
+    const fetchLessonContent = async (courseId: number, lessonId: number) => {
+        try {
+            const data = await $fetch<{ code: number; message: string; data: any; progress?: any }>(`${API_BASE_URL}/students/courses/${courseId}/lessons/${lessonId}`, {
+                method: 'GET',
+                headers: token.value ? {
+                    Authorization: `Bearer ${token.value}`
+                } : {}
+            })
+
+            return {
+                success: true,
+                data: data.data,
+                progress: data.progress
+            }
+        } catch (err: any) {
+            console.error('Fetch lesson content failed:', err)
+            return {
+                success: false,
+                error: err.data?.message || err.message || 'Error fetching lesson content',
+                code: err.data?.code,
+                status: err.status
+            }
+        }
+    }
+
     return {
         fetchCourses,
         fetchCourseById,
         enrollCourse,
-        fetchEnrolledCourses
+        fetchEnrolledCourses,
+        fetchCourseLearningInfo,
+        fetchLessonContent
     }
 }