import {
  Body,
  Controller,
  Delete,
  Get,
  Head,
  Path,
  Post,
  Put,
  Query,
  Request,
  Route,
  Security,
  Tags,
} from "tsoa";
import prisma from "../db";
import { notFoundError } from "../utils/error";
import {
  Prisma,
  RequestDataStatus,
  RequestWorkStatus,
  TaskOrderStatus,
  TaskStatus,
  UserTaskStatus,
} from "@prisma/client";
import { RequestWithUser } from "../interfaces/user";
import {
  branchRelationPermInclude,
  createPermCheck,
  createPermCondition,
} from "../services/permission";
import HttpError from "../interfaces/http-error";
import HttpStatus from "../interfaces/http-status";
import { deleteFile, fileLocation, getFile, getPresigned, listFile, setFile } from "../utils/minio";
import { queryOrNot } from "../utils/relation";

const MANAGE_ROLES = ["system", "head_of_admin", "admin", "document_checker"];

function globalAllow(user: RequestWithUser["user"]) {
  const allowList = ["system", "head_of_admin"];
  return allowList.some((v) => user.roles?.includes(v));
}

const permissionCondCompany = createPermCondition((_) => true);

const permissionCheck = createPermCheck(globalAllow);
const permissionCheckCompany = createPermCheck((_) => true);

@Route("/api/v1/task-order")
@Tags("Task Order")
export class TaskController extends Controller {
  @Get("stats")
  async getTaskOrderStats() {
    const task = await prisma.taskOrder.groupBy({
      by: ["taskOrderStatus"],
      _count: true,
    });
    return task.reduce<Record<TaskOrderStatus, number>>(
      (a, c) => Object.assign(a, { [c.taskOrderStatus]: c._count }),
      {
        [TaskOrderStatus.Pending]: 0,
        [TaskOrderStatus.InProgress]: 0,
        [TaskOrderStatus.Validate]: 0,
        [TaskOrderStatus.Complete]: 0,
        [TaskOrderStatus.Canceled]: 0,
      },
    );
  }

  @Get()
  @Security("keycloak")
  async getTaskOrderList(
    @Request() req: RequestWithUser,
    @Query() query: string = "",
    @Query() page = 1,
    @Query() pageSize = 30,
    @Query() assignedByUserId?: string,
    @Query() taskOrderStatus?: TaskOrderStatus,
  ) {
    return this.getTaskOrderListByCriteria(
      req,
      query,
      page,
      pageSize,
      assignedByUserId,
      taskOrderStatus,
    );
  }

  @Post("list")
  @Security("keycloak")
  async getTaskOrderListByCriteria(
    @Request() req: RequestWithUser,
    @Query() query: string = "",
    @Query() page = 1,
    @Query() pageSize = 30,
    @Query() assignedUserId?: string,
    @Query() taskOrderStatus?: TaskOrderStatus,
    @Body() body?: { code?: string[] },
  ) {
    const where = {
      taskOrderStatus,
      registeredBranch: { OR: permissionCondCompany(req.user) },
      taskList: assignedUserId
        ? {
            some: {
              requestWorkStep: { responsibleUserId: assignedUserId },
            },
          }
        : undefined,
      code: body?.code ? { in: body.code } : undefined,
      OR: queryOrNot(query, [
        { code: { contains: query, mode: "insensitive" } },
        { taskName: { contains: query } },
        { contactName: { contains: query } },
        { contactTel: { contains: query } },
      ]),
    } satisfies Prisma.TaskOrderWhereInput;

    const [result, total] = await prisma.$transaction([
      prisma.taskOrder.findMany({
        where,
        include: {
          taskList: true,
          institution: true,
          createdBy: true,
        },
      }),
      prisma.taskOrder.count({ where }),
    ]);

    return { result, total, page, pageSize };
  }

  @Get("{taskOrderId}")
  @Security("keycloak")
  async getTaskOrder(
    @Request() req: RequestWithUser,
    @Path() taskOrderId: string,
    @Query() taskAssignedUserId?: string,
  ) {
    const record = await prisma.taskOrder.findFirst({
      where: { id: taskOrderId },
      include: {
        userTask: true,
        taskList: {
          where: {
            requestWorkStep: { responsibleUserId: taskAssignedUserId },
          },
          include: {
            requestWorkStep: {
              include: {
                responsibleUser: true,
                requestWork: {
                  include: {
                    request: {
                      include: {
                        employee: true,
                        quotation: true,
                      },
                    },
                    productService: {
                      include: {
                        service: {
                          include: {
                            workflow: {
                              include: {
                                step: {
                                  include: {
                                    value: true,
                                    responsiblePerson: {
                                      include: { user: true },
                                    },
                                    responsibleInstitution: true,
                                  },
                                },
                              },
                            },
                          },
                        },
                        work: true,
                        product: true,
                      },
                    },
                  },
                },
              },
            },
          },
        },
        institution: true,
        createdBy: true,
      },
    });

    if (!record) throw notFoundError("Task Order");

    return record;
  }

  @Post()
  @Security("keycloak", MANAGE_ROLES)
  async createTaskOrderList(
    @Request() req: RequestWithUser,
    @Body()
    body: {
      taskName: string;

      contactName: string;
      contactTel: string;

      institutionId: string;
      registeredBranchId?: string;

      taskList: { requestWorkId: string; step: number }[];
    },
  ) {
    return await prisma.$transaction(async (tx) => {
      const last = await tx.runningNo.upsert({
        where: {
          key: "TASK",
        },
        create: {
          key: "TASK",
          value: 1,
        },
        update: {
          value: { increment: 1 },
        },
      });
      const current = new Date();
      const year = `${current.getFullYear()}`.slice(-2).padStart(2, "0");
      const month = `${current.getMonth() + 1}`.padStart(2, "0");

      const code = `PO${year}${month}${last.value.toString().padStart(6, "0")}`;

      const { taskList, ...rest } = body;

      const userAffiliatedBranch = await tx.branch.findFirst({
        include: branchRelationPermInclude(req.user),
        where: body.registeredBranchId
          ? { id: body.registeredBranchId }
          : {
              user: { some: { userId: req.user.sub } },
            },
      });
      if (!userAffiliatedBranch) {
        throw new HttpError(
          HttpStatus.BAD_REQUEST,
          "You must be affilated with at least one branch or specify branch to be registered (System permission required).",
          "reqMinAffilatedBranch",
        );
      }
      await permissionCheckCompany(req.user, userAffiliatedBranch);

      const updated = await tx.requestWorkStepStatus.updateMany({
        where: {
          OR: taskList,
          workStatus: RequestWorkStatus.Ready,
        },
        data: { workStatus: RequestWorkStatus.InProgress },
      });

      if (updated.count !== taskList.length) {
        throw new HttpError(
          HttpStatus.PRECONDITION_FAILED,
          "All request work to issue task order must be in ready state.",
          "requestWorkMustReady",
        );
      }

      return await tx.taskOrder.create({
        include: {
          taskList: {
            include: {
              requestWorkStep: {
                include: {
                  requestWork: {
                    include: {
                      request: {
                        include: {
                          employee: true,
                          quotation: true,
                        },
                      },
                      productService: {
                        include: {
                          service: {
                            include: {
                              workflow: {
                                include: {
                                  step: {
                                    include: {
                                      value: true,
                                      responsiblePerson: {
                                        include: { user: true },
                                      },
                                      responsibleInstitution: true,
                                    },
                                  },
                                },
                              },
                            },
                          },
                          work: true,
                          product: true,
                        },
                      },
                    },
                  },
                },
              },
            },
          },
          institution: true,
          createdBy: true,
        },
        data: {
          ...rest,
          code,
          registeredBranchId: userAffiliatedBranch.id,
          createdByUserId: req.user.sub,
          taskList: { create: taskList },
        },
      });
    });
  }

  @Put("{taskOrderId}")
  @Security("keycloak")
  async editTaskById(
    @Request() req: RequestWithUser,
    @Path() taskOrderId: string,
    @Body()
    body: {
      taskName: string;
      taskOrderStatus?: TaskOrderStatus;

      contactName: string;
      contactTel: string;

      institutionId: string;

      taskList: { requestWorkId: string; step: number }[];
    },
  ) {
    const record = await prisma.taskOrder.findFirst({
      where: { id: taskOrderId },
      include: {
        registeredBranch: { include: branchRelationPermInclude(req.user) },
        taskList: {
          include: {
            requestWorkStep: {
              include: { requestWork: true },
            },
          },
        },
        institution: true,
        createdBy: true,
      },
    });

    if (!record) throw notFoundError("Task Order");

    await permissionCheckCompany(req.user, record.registeredBranch);

    await prisma.taskOrder.update({
      where: { id: taskOrderId },
      include: {
        taskList: {
          include: {
            requestWorkStep: {
              include: {
                requestWork: true,
              },
            },
          },
        },
        institution: true,
        registeredBranch: true,
        createdBy: true,
      },
      data: {
        ...body,
        taskList: {
          deleteMany: record?.taskList.filter(
            (lhs) =>
              !body.taskList.find(
                (rhs) => lhs.requestWorkId === rhs.requestWorkId && lhs.step === rhs.step,
              ),
          ),
          createMany: {
            data: body.taskList.filter(
              (lhs) =>
                !record?.taskList.find(
                  (rhs) => lhs.requestWorkId === rhs.requestWorkId && lhs.step === rhs.step,
                ),
            ),
            skipDuplicates: true,
          },
        },
      },
    });
  }

  @Delete("{taskOrderId}")
  @Security("keycloak", MANAGE_ROLES)
  async deleteTask(@Request() req: RequestWithUser, @Path() taskOrderId: string) {
    await prisma.$transaction(async (tx) => {
      let record = await tx.taskOrder.findFirst({
        where: { id: taskOrderId },
        include: {
          registeredBranch: {
            include: branchRelationPermInclude(req.user),
          },
        },
      });

      if (!record) throw notFoundError("Task Order");

      await permissionCheck(req.user, record.registeredBranch);
    });
  }
}

@Route("/api/v1/task-order/{taskOrderId}")
@Tags("Task Order")
export class TaskActionController extends Controller {
  @Post("set-task-status")
  @Security("keycloak")
  async changeTaskOrderTaskListStatus(
    @Request() req: RequestWithUser,
    @Path() taskOrderId: string,
    @Body()
    body: {
      step: number;
      requestWorkId: string;
      taskStatus: TaskStatus;
      failedType?: string;
      failedComment?: string;
    }[],
  ) {
    return await prisma.$transaction(async (tx) => {
      const promises = body.map(async (v) => {
        const record = await tx.task.findFirst({
          where: {
            step: v.step,
            requestWorkId: v.requestWorkId,
            taskOrderId: taskOrderId,
          },
        });
        if (!record) throw notFoundError("Task List");
        return await tx.task.update({
          where: { id: record.id },
          data: {
            taskStatus: v.taskStatus,
            failedType: v.failedType,
            failedComment: v.failedComment,
          },
        });
      });
      return await Promise.all(promises);
    });
  }

  @Post("submit")
  @Security("keycloak")
  async submitTaskOrder(
    @Request() req: RequestWithUser,
    @Path() taskOrderId: string,
    @Query() submitUserId?: string, // for explicit
  ) {
    submitUserId = submitUserId ?? req.user.sub;

    const record = await prisma.taskOrder.findFirst({ where: { id: taskOrderId } });

    if (!record) throw notFoundError("Task Order");

    await prisma.$transaction([
      prisma.task.updateMany({
        where: {
          taskOrderId: taskOrderId,
          taskStatus: TaskStatus.Success,
          requestWorkStep: { responsibleUserId: submitUserId },
        },
        data: {
          taskStatus: TaskStatus.Validate,
        },
      }),
      prisma.userTask.updateMany({
        where: {
          taskOrderId: taskOrderId,
          userId: submitUserId,
        },
        data: { userTaskStatus: UserTaskStatus.Submit },
      }),
    ]);
  }

  @Post("complete")
  @Security("keycloak")
  async completeTaskOrder(@Request() req: RequestWithUser, @Path() taskOrderId: string) {}
}

@Route("api/v1/task-order/{taskOrderId}")
@Tags("Task Order")
export class TaskOrderAttachmentController extends Controller {
  private async checkPermission(user: RequestWithUser["user"], id: string) {
    const data = await prisma.taskOrder.findUnique({
      include: { registeredBranch: { include: branchRelationPermInclude(user) } },
      where: { id },
    });
    if (!data) throw notFoundError("Task Order");
    await permissionCheck(user, data.registeredBranch);
  }

  @Get("attachment")
  @Security("keycloak")
  async listAttachment(@Request() req: RequestWithUser, @Path() taskOrderId: string) {
    await this.checkPermission(req.user, taskOrderId);
    return await listFile(fileLocation.task.attachment(taskOrderId));
  }

  @Get("attachment/{name}")
  @Security("keycloak")
  async getAttachment(@Path() taskOrderId: string, @Path() name: string) {
    return await getFile(fileLocation.task.attachment(taskOrderId, name));
  }

  @Head("attachment/{name}")
  async headAttachment(@Path() taskOrderId: string, @Path() name: string) {
    return await getPresigned("head", fileLocation.task.attachment(taskOrderId, name));
  }

  @Put("attachment/{name}")
  @Security("keycloak")
  async putAttachment(
    @Request() req: RequestWithUser,
    @Path() taskOrderId: string,
    @Path() name: string,
  ) {
    await this.checkPermission(req.user, taskOrderId);
    return await setFile(fileLocation.task.attachment(taskOrderId, name));
  }

  @Delete("attachment/{name}")
  @Security("keycloak")
  async delAttachment(
    @Request() req: RequestWithUser,
    @Path() taskOrderId: string,
    @Path() name: string,
  ) {
    await this.checkPermission(req.user, taskOrderId);
    return await deleteFile(fileLocation.task.attachment(taskOrderId, name));
  }
}

@Route("api/v1/user-task-order")
@Tags("User Task Order")
export class UserTaskController extends Controller {
  @Get()
  @Security("keycloak")
  async getUserTask(
    @Request() req: RequestWithUser,
    @Query() query: string = "",
    @Query() page = 1,
    @Query() pageSize = 30,
    @Query() userTaskStatus?: UserTaskStatus,
  ) {
    const where = {
      taskList: {
        some: {
          requestWorkStep: { responsibleUserId: req.user.sub },
        },
      },
      userTask: userTaskStatus
        ? {
            some:
              userTaskStatus !== UserTaskStatus.Pending
                ? {
                    userTaskStatus,
                    userId: req.user.sub,
                  }
                : undefined,
            none: userTaskStatus === UserTaskStatus.Pending ? { userId: req.user.sub } : undefined,
          }
        : undefined,
      OR: queryOrNot(query, [
        { code: { contains: query, mode: "insensitive" } },
        { taskName: { contains: query } },
        { contactName: { contains: query } },
        { contactTel: { contains: query } },
      ]),
    } satisfies Prisma.TaskOrderWhereInput;

    const [result, total] = await prisma.$transaction([
      prisma.taskOrder.findMany({
        where,
        include: {
          userTask: {
            where: { userId: req.user.sub },
          },
          institution: true,
          createdBy: true,
        },
      }),
      prisma.taskOrder.count({ where }),
    ]);

    return {
      result: result.map((lhs) => ({
        ...lhs,
        taskOrderStatus:
          lhs.userTask.find((rhs) => rhs.taskOrderId === lhs.id)?.userTaskStatus ??
          lhs.taskOrderStatus,
        userTask: undefined,
      })),
      page,
      pageSize,
      total,
    };
  }

  @Post("accept")
  @Security("keycloak")
  async acceptTaskOrder(
    @Request() req: RequestWithUser,
    @Body()
    body: {
      taskOrderId: string[];
    },
  ) {
    const record = await prisma.taskOrder.findMany({
      include: {
        taskList: {
          orderBy: { step: "asc" },
        },
      },
      where: { id: { in: body.taskOrderId } },
    });

    if (!record) throw notFoundError("Task Order");

    await prisma.$transaction(async (tx) => {
      const promises = body.taskOrderId.flatMap((taskOrderId) => [
        tx.taskOrder.update({
          where: { id: taskOrderId },
          data: {
            taskOrderStatus: TaskOrderStatus.InProgress,
            userTask: {
              create: {
                userId: req.user.sub,
                userTaskStatus: UserTaskStatus.Accept,
              },
            },
          },
        }),
        tx.task.updateMany({
          where: {
            taskOrderId: taskOrderId,
            requestWorkStep: { responsibleUserId: req.user.sub },
          },
          data: {
            taskStatus: TaskStatus.InProgress,
          },
        }),
        tx.requestData.updateMany({
          where: {
            requestWork: {
              some: {
                stepStatus: {
                  some: { task: { some: { taskOrderId: taskOrderId } } },
                },
              },
            },
          },
          data: { requestDataStatus: RequestDataStatus.InProgress },
        }),
        tx.userTask.create({
          data: {
            userId: req.user.sub,
            taskOrderId: taskOrderId,
            userTaskStatus: UserTaskStatus.Accept,
          },
        }),
      ]);

      await Promise.all(promises);
    });
  }
}