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;
const MANAGE_ROLES = [
  "system",
  "head_of_admin",
  "admin",
  "branch_admin",
  "branch_manager",
  "accountant",
  "branch_accountant",
];

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

type ServiceUpdate = {
  name?: string;
  detail?: string;
  attributes?: {
    [key: string]: any;
  };
  status?: "ACTIVE" | "INACTIVE";
  work?: {
    name: string;
    productId: string[];
    attributes?: { [key: string]: any };
  }[];
  productTypeId?: string;
  registeredBranchId?: string;
};

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

function globalAllow(roles?: string[]) {
  return ["system", "head_of_admin", "admin", "accountant"].some((v) => roles?.includes(v));
}

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

  @Get()
  @Security("keycloak")
  async getService(
    @Query() query: string = "",
    @Query() page: number = 1,
    @Query() pageSize: number = 30,
    @Query() status?: Status,
    @Query() productTypeId?: string,
    @Query() registeredBranchId?: string,
    @Query() fullDetail?: boolean,
  ) {
    const filterStatus = (val?: Status) => {
      if (!val) return {};

      return val !== Status.CREATED && val !== Status.ACTIVE
        ? { status: val }
        : { OR: [{ status: Status.CREATED }, { status: Status.ACTIVE }] };
    };

    const where = {
      OR: [
        { name: { contains: query }, productTypeId, ...filterStatus(status) },
        { detail: { contains: query }, productTypeId, ...filterStatus(status) },
      ],
      AND: registeredBranchId
        ? {
            OR: [{ registeredBranchId: registeredBranchId }, { registeredBranchId: null }],
          }
        : undefined,
    } satisfies Prisma.ServiceWhereInput;

    const [result, total] = await prisma.$transaction([
      prisma.service.findMany({
        include: {
          work: fullDetail
            ? {
                orderBy: { order: "asc" },
                include: {
                  productOnWork: {
                    include: { product: true },
                    orderBy: { order: "asc" },
                  },
                },
              }
            : true,
          createdBy: true,
          updatedBy: true,
        },
        orderBy: [{ statusOrder: "asc" }, { 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}")
  @Security("keycloak")
  async getServiceById(@Path() serviceId: string) {
    const record = await prisma.service.findFirst({
      include: {
        work: {
          orderBy: { order: "asc" },
          include: {
            productOnWork: {
              include: { product: true },
              orderBy: { order: "asc" },
            },
          },
        },
        createdBy: true,
        updatedBy: true,
      },
      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")
  @Security("keycloak")
  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" },
          },
          createdBy: true,
          updatedBy: true,
        },
        where,
        take: pageSize,
        skip: (page - 1) * pageSize,
      }),
      prisma.work.count({ where }),
    ]);
    return { result, page, pageSize, total };
  }

  @Get("{serviceId}/image")
  async getServiceImageById(@Request() req: RequestWithUser, @Path() serviceId: string) {
    const url = await presignedGetObjectIfExist(MINIO_BUCKET, imageLocation(serviceId), 60 * 60);

    if (!url) {
      throw new HttpError(HttpStatus.NOT_FOUND, "Image cannot be found", "imageNotFound");
    }

    return req.res?.redirect(url);
  }

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

    const [productType, branch] = await prisma.$transaction([
      prisma.productType.findFirst({
        include: {
          createdBy: true,
          updatedBy: true,
        },
        where: { id: body.productTypeId },
      }),
      prisma.branch.findFirst({
        include: { user: { where: { userId: req.user.sub } } },
        where: { id: body.registeredBranchId },
      }),
    ]);

    if (!globalAllow(req.user.roles) && !branch?.user.find((v) => v.userId === req.user.sub)) {
      throw new HttpError(
        HttpStatus.FORBIDDEN,
        "You do not have permission to perform this action.",
        "noPermission",
      );
    }

    if (!productType) {
      throw new HttpError(
        HttpStatus.BAD_REQUEST,
        "Product Type cannot be found.",
        "relationProductTypeNotFound",
      );
    }

    if (body.registeredBranchId && !branch) {
      throw new HttpError(
        HttpStatus.BAD_REQUEST,
        "Branch cannot be found.",
        "relationBranchNotFound",
      );
    }

    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 } },
        });

        const workList = await Promise.all(
          (work || []).map(async (w, wIdx) =>
            tx.work.create({
              data: {
                name: w.name,
                order: wIdx + 1,
                attributes: w.attributes,
                productOnWork: {
                  createMany: {
                    data: w.productId.map((p, pIdx) => ({
                      productId: p,
                      order: pIdx + 1,
                    })),
                  },
                },
              },
            }),
          ),
        );

        return tx.service.create({
          include: {
            work: {
              include: {
                productOnWork: {
                  include: {
                    product: true,
                  },
                  orderBy: { order: "asc" },
                },
              },
            },
            createdBy: true,
            updatedBy: true,
          },
          data: {
            ...payload,
            productTypeId,
            statusOrder: +(body.status === "INACTIVE"),
            code: `${body.code.toLocaleUpperCase()}${last.value.toString().padStart(3, "0")}`,
            work: { connect: workList.map((v) => ({ id: v.id })) },
            createdByUserId: req.user.sub,
            updatedByUserId: req.user.sub,
          },
        });
      },
      { 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}")
  @Security("keycloak", MANAGE_ROLES)
  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, productTypeId, ...payload } = body;

    const [service, productType, branch] = await prisma.$transaction([
      prisma.service.findUnique({
        include: {
          registeredBranch: {
            where: {
              user: { some: { userId: req.user.sub } },
            },
          },
        },
        where: { id: serviceId },
      }),
      prisma.productType.findFirst({
        include: {
          createdBy: true,
          updatedBy: true,
        },
        where: { id: body.productTypeId },
      }),
      prisma.branch.findFirst({ where: { id: body.registeredBranchId } }),
    ]);

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

    if (!globalAllow(req.user.roles) && !service.registeredBranch) {
      throw new HttpError(
        HttpStatus.FORBIDDEN,
        "You do not have permission to perform this action.",
        "noPermission",
      );
    }

    if (!productType) {
      throw new HttpError(
        HttpStatus.BAD_REQUEST,
        "Product Type cannot be found.",
        "relationProductTypeNotFound",
      );
    }

    if (body.registeredBranchId && !branch) {
      throw new HttpError(
        HttpStatus.BAD_REQUEST,
        "Branch cannot be found.",
        "relationBranchNotFound",
      );
    }

    const record = await prisma.$transaction(async (tx) => {
      const workList = await Promise.all(
        (work || []).map(async (w, wIdx) =>
          tx.work.create({
            data: {
              name: w.name,
              order: wIdx + 1,
              attributes: w.attributes,
              productOnWork: {
                createMany: {
                  data: w.productId.map((p, pIdx) => ({
                    productId: p,
                    order: pIdx + 1,
                  })),
                },
              },
            },
          }),
        ),
      );

      return await tx.service.update({
        include: {
          createdBy: true,
          updatedBy: true,
        },
        data: {
          ...payload,
          statusOrder: +(payload.status === "INACTIVE"),
          work: {
            deleteMany: {},
            connect: workList.map((v) => ({ id: v.id })),
          },
          updatedByUserId: req.user.sub,
        },
        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}")
  @Security("keycloak", MANAGE_ROLES)
  async deleteService(@Request() req: RequestWithUser, @Path() serviceId: string) {
    const record = await prisma.service.findFirst({
      include: {
        registeredBranch: {
          where: {
            user: { some: { userId: req.user.sub } },
          },
        },
      },
      where: { id: serviceId },
    });

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

    if (!globalAllow(req.user.roles) && !record.registeredBranch) {
      throw new HttpError(
        HttpStatus.FORBIDDEN,
        "You do not have permission to perform this action.",
        "noPermission",
      );
    }

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

    return await prisma.service.delete({
      include: {
        createdBy: true,
        updatedBy: true,
      },
      where: { id: serviceId },
    });
  }
}