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

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

type BranchUserBody = { user: string[] };

async function userBranchCodeGen(branch: Branch, user: User[]) {
  await prisma.$transaction(
    async (tx) => {
      for (const usr of user) {
        if (usr.code !== null) continue;

        const typ = usr.userType;

        const last = await tx.runningNo.upsert({
          where: {
            key: `BR_USR_${branch.code.slice(4).padEnd(3, "0")}${typ !== "USER" ? typ.charAt(0).toLocaleUpperCase() : ""}`,
          },
          create: {
            key: `BR_USR_${branch.code.slice(4).padEnd(3, "0")}${typ !== "USER" ? typ.charAt(0).toLocaleUpperCase() : ""}`,
            value: 1,
          },
          update: { value: { increment: 1 } },
        });

        await prisma.user.update({
          where: { id: usr.id },
          data: {
            code: `${last.key.slice(7)}${last.value.toString().padStart(4, "0")}`,
          },
        });
      }
    },
    { isolationLevel: Prisma.TransactionIsolationLevel.Serializable },
  );
}

@Route("api/v1/branch/{branchId}/user")
@Tags("Branch User")
@Security("keycloak")
export class BranchUserController extends Controller {
  @Get()
  async getBranchUser(
    @Path() branchId: string,
    @Query() zipCode?: string,
    @Query() query: string = "",
    @Query() page: number = 1,
    @Query() pageSize: number = 30,
  ) {
    const where = {
      OR: [
        { user: { firstName: { contains: query }, zipCode }, branchId },
        { user: { firstNameEN: { contains: query }, zipCode }, branchId },
        { user: { lastName: { contains: query }, zipCode }, branchId },
        { user: { lastNameEN: { contains: query }, zipCode }, branchId },
        { user: { email: { contains: query }, zipCode }, branchId },
        { user: { telephoneNo: { contains: query }, zipCode }, branchId },
      ],
    } satisfies Prisma.BranchUserWhereInput;

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

    return { result: result.map((v) => v.user), page, pageSize, total };
  }

  @Post()
  async createBranchUser(
    @Request() req: RequestWithUser,
    @Path() branchId: string,
    @Body() body: BranchUserBody,
  ) {
    const [branch, user] = await prisma.$transaction([
      prisma.branch.findUnique({
        where: { id: branchId },
      }),
      prisma.user.findMany({
        include: { branch: true },
        where: { id: { in: body.user } },
      }),
    ]);

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

    if (user.length !== body.user.length) {
      throw new HttpError(
        HttpStatus.BAD_REQUEST,
        "One or more user cannot be found.",
        "missing_or_invalid_parameter",
      );
    }

    await prisma.$transaction([
      prisma.user.updateMany({
        where: { id: { in: body.user }, status: Status.CREATED },
        data: { status: Status.ACTIVE },
      }),
      prisma.branchUser.createMany({
        data: user
          .filter((a) => !a.branch.some((b) => b.branchId === branchId))
          .map((v) => ({
            branchId,
            userId: v.id,
            createdBy: req.user.name,
            updateBy: req.user.name,
          })),
      }),
    ]);

    await userBranchCodeGen(branch, user);
  }

  @Delete()
  async deleteBranchUser(@Path() branchId: string, @Body() body: BranchUserBody) {
    await prisma.$transaction(
      body.user.map((v) => prisma.branchUser.deleteMany({ where: { branchId, userId: v } })),
    );
    await prisma.user.updateMany({
      where: {
        branch: { none: {} },
      },
      data: { code: null },
    });
  }

  @Delete("{userId}")
  async deleteBranchUserById(@Path() branchId: string, @Path() userId: string) {
    await prisma.branchUser.deleteMany({
      where: { branchId, userId },
    });
    await prisma.user.updateMany({
      where: {
        id: userId,
        branch: { none: {} },
      },
      data: { code: null },
    });
  }
}

type UserBranchBody = { branch: string[] };

@Route("api/v1/user/{userId}/branch")
@Tags("Branch User")
@Security("keycloak")
export class UserBranchController extends Controller {
  @Get()
  async getUserBranch(
    @Path() userId: string,
    @Query() zipCode?: string,
    @Query() query: string = "",
    @Query() page: number = 1,
    @Query() pageSize: number = 30,
  ) {
    const where = {
      OR: [
        { branch: { name: { contains: query }, zipCode }, userId },
        { branch: { nameEN: { contains: query }, zipCode }, userId },
      ],
    } satisfies Prisma.BranchUserWhereInput;

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

    return { result: result.map((v) => v.branch), page, pageSize, total };
  }

  @Post()
  async createUserBranch(
    @Request() req: RequestWithUser,
    @Path() userId: string,
    @Body() body: UserBranchBody,
  ) {
    const branch = await prisma.branch.findMany({
      include: { user: true },
      where: { id: { in: body.branch } },
    });

    if (branch.length !== body.branch.length) {
      throw new HttpError(
        HttpStatus.BAD_REQUEST,
        "One or more branch cannot be found.",
        "missing_or_invalid_parameter",
      );
    }

    await prisma.branch.updateMany({
      where: { id: { in: body.branch }, status: Status.CREATED },
      data: { status: Status.ACTIVE },
    });

    await prisma.branchUser.createMany({
      data: branch
        .filter((a) => !a.user.some((b) => b.userId === userId))
        .map((v) => ({
          branchId: v.id,
          userId,
          createdBy: req.user.name,
          updateBy: req.user.name,
        })),
    });

    this.setStatus(HttpStatus.CREATED);
  }

  @Delete()
  async deleteUserBranch(@Path() userId: string, @Body() body: UserBranchBody) {
    await prisma.$transaction(
      body.branch.map((v) => prisma.branchUser.deleteMany({ where: { userId, branchId: v } })),
    );
    await prisma.user.updateMany({
      where: {
        branch: { none: {} },
      },
      data: { code: null },
    });
  }

  @Delete("{branchId}")
  async deleteUserBranchById(@Path() branchId: string, @Path() userId: string) {
    await prisma.branchUser.deleteMany({
      where: { branchId, userId },
    });
    await prisma.user.updateMany({
      where: {
        id: userId,
        branch: { none: {} },
      },
      data: { code: null },
    });
  }
}