import {
  Body,
  Controller,
  Delete,
  Get,
  Put,
  Path,
  Post,
  Query,
  Request,
  Route,
  Security,
  Tags,
} from "tsoa";
import { Prisma, Status } from "@prisma/client";

import prisma from "../../db";
import minio, { presignedGetObjectIfExist } from "../../services/minio";
import { RequestWithUser } from "../../interfaces/user";
import HttpError from "../../interfaces/http-error";
import HttpStatus from "../../interfaces/http-status";

if (!process.env.MINIO_BUCKET) {
  throw Error("Require MinIO bucket.");
}

const MINIO_BUCKET = process.env.MINIO_BUCKET;

type ServiceCreate = {
  code: "MOU" | "mou";
  name: string;
  detail: string;
  attributes?: {
    [key: string]: any;
  };
  work?: {
    name: string;
    productId: string[];
    attributes?: { [key: string]: any };
  }[];
};

type ServiceUpdate = {
  name: string;
  detail: string;
  attributes?: {
    [key: string]: any;
  };
  work?: {
    name: string;
    productId: string[];
    attributes?: { [key: string]: any };
  }[];
};

function imageLocation(id: string) {
  return `service/${id}/service-image`;
}

@Route("api/v1/service")
@Tags("Service")
@Security("keycloak")
export class ServiceController extends Controller {
  @Get("stats")
  async getServiceStats() {
    return await prisma.service.count();
  }

  @Get()
  async getService(
    @Query() query: string = "",
    @Query() page: number = 1,
    @Query() pageSize: number = 30,
  ) {
    const where = {
      OR: [{ name: { contains: query } }, { detail: { contains: query } }],
    } satisfies Prisma.ServiceWhereInput;

    const [result, total] = await prisma.$transaction([
      prisma.service.findMany({
        include: {
          work: true,
        },
        orderBy: { createdAt: "asc" },
        where,
        take: pageSize,
        skip: (page - 1) * pageSize,
      }),
      prisma.service.count({ where }),
    ]);

    return {
      result: await Promise.all(
        result.map(async (v) => ({
          ...v,
          imageUrl: await presignedGetObjectIfExist(
            MINIO_BUCKET,
            imageLocation(v.id),
            12 * 60 * 60,
          ),
        })),
      ),
      page,
      pageSize,
      total,
    };
  }

  @Get("{serviceId}")
  async getServiceById(@Path() serviceId: string) {
    const record = await prisma.service.findFirst({
      include: {
        work: {
          orderBy: { order: "asc" },
          include: {
            productOnWork: {
              include: { product: true },
              orderBy: { order: "asc" },
            },
          },
        },
      },
      where: { id: serviceId },
    });

    if (!record) {
      throw new HttpError(HttpStatus.NOT_FOUND, "Service cannot be found.", "serviceNotFound");
    }

    return Object.assign(record, {
      imageUrl: await presignedGetObjectIfExist(MINIO_BUCKET, imageLocation(record.id), 60 * 60),
    });
  }

  @Get("{serviceId}/work")
  async getWorkOfService(
    @Path() serviceId: string,
    @Query() page: number = 1,
    @Query() pageSize: number = 30,
  ) {
    const where = {
      serviceId,
    } satisfies Prisma.WorkWhereInput;

    const [result, total] = await prisma.$transaction([
      prisma.work.findMany({
        include: {
          productOnWork: {
            include: {
              product: true,
            },
            orderBy: { order: "asc" },
          },
        },
        where,
        take: pageSize,
        skip: (page - 1) * pageSize,
      }),
      prisma.work.count({ where }),
    ]);
    return { result, page, pageSize, total };
  }

  @Post()
  async createService(@Request() req: RequestWithUser, @Body() body: ServiceCreate) {
    const { work, ...payload } = body;

    const record = await prisma.$transaction(
      async (tx) => {
        const last = await tx.runningNo.upsert({
          where: {
            key: `SERVICE_${body.code.toLocaleUpperCase()}`,
          },
          create: {
            key: `SERVICE_${body.code.toLocaleUpperCase()}`,
            value: 1,
          },
          update: { value: { increment: 1 } },
        });

        return tx.service.create({
          include: {
            work: {
              include: {
                productOnWork: {
                  include: {
                    product: true,
                  },
                  orderBy: { order: "asc" },
                },
              },
            },
          },
          data: {
            ...payload,
            code: `${body.code.toLocaleUpperCase()}${last.value.toString().padStart(3, "0")}`,
            work: {
              createMany: {
                data:
                  work?.map((v, i) => ({
                    ...v,
                    order: i + 1,
                  })) || [],
              },
            },
            createdBy: req.user.name,
            updateBy: req.user.name,
          },
        });
      },
      { isolationLevel: Prisma.TransactionIsolationLevel.Serializable },
    );
    this.setStatus(HttpStatus.CREATED);

    return Object.assign(record, {
      imageUrl: await presignedGetObjectIfExist(
        MINIO_BUCKET,
        imageLocation(record.id),
        12 * 60 * 60,
      ),
      imageUploadUrl: await minio.presignedPutObject(
        MINIO_BUCKET,
        imageLocation(record.id),
        12 * 60 * 60,
      ),
    });
  }

  @Put("{serviceId}")
  async editService(
    @Request() req: RequestWithUser,
    @Body() body: ServiceUpdate,
    @Path() serviceId: string,
  ) {
    if (!(await prisma.service.findUnique({ where: { id: serviceId } }))) {
      throw new HttpError(HttpStatus.NOT_FOUND, "Service cannot be found.", "serviceNotFound");
    }

    const { work, ...payload } = body;

    const record = await prisma.service.update({
      data: {
        ...payload,
        work: {
          deleteMany: {},
          createMany: {
            data:
              work?.map((v, i) => ({
                order: i + 1,
                ...v,
              })) || [],
          },
        },
        updateBy: req.user.name,
      },
      where: { id: serviceId },
    });
    return Object.assign(record, {
      imageUrl: await presignedGetObjectIfExist(
        MINIO_BUCKET,
        imageLocation(record.id),
        12 * 60 * 60,
      ),
      imageUploadUrl: await minio.presignedPutObject(
        MINIO_BUCKET,
        imageLocation(record.id),
        12 * 60 * 60,
      ),
    });
  }

  @Delete("{serviceId}")
  async deleteService(@Path() serviceId: string) {
    const record = await prisma.service.findFirst({ where: { id: serviceId } });

    if (!record) {
      throw new HttpError(HttpStatus.NOT_FOUND, "Service cannot be found.", "serviceNotFound");
    }

    if (record.status !== Status.CREATED) {
      throw new HttpError(HttpStatus.FORBIDDEN, "Service is in used.", "serviceInUsed");
    }

    return await prisma.service.delete({ where: { id: serviceId } });
  }
}