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 { RequestWithUser } from "../interfaces/user";
import HttpError from "../interfaces/http-error";
import HttpStatus from "../interfaces/http-status";
import { isSystem } from "../utils/keycloak";
import {
  branchRelationPermInclude,
  createPermCheck,
  createPermCondition,
} from "../services/permission";
import { filterStatus } from "../services/prisma";
import { isUsedError, notFoundError, relationError } from "../utils/error";

type ProductGroupCreate = {
  name: string;
  detail: string;
  remark: string;
  status?: Status;
  registeredBranchId: string;
};

type ProductGroupUpdate = {
  name?: string;
  detail?: string;
  remark?: string;
  status?: "ACTIVE" | "INACTIVE";
  registeredBranchId?: string;
};

const MANAGE_ROLES = [
  "system",
  "head_of_admin",
  "admin",
  "head_of_account",
  "account",
  "head_of_sale",
];

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

const permissionCond = createPermCondition((_) => true);
const permissionCheck = createPermCheck(globalAllow);

@Route("api/v1/product-group")
@Tags("Product Group")
export class ProductGroup extends Controller {
  @Get("stats")
  @Security("keycloak")
  async getProductGroupStats(@Request() req: RequestWithUser) {
    return await prisma.productGroup.count({
      where: {
        AND: [
          {
            registeredBranch: isSystem(req.user) ? undefined : { OR: permissionCond(req.user) },
          },
        ],
      },
    });
  }

  @Get()
  @Security("keycloak")
  async getProductGroup(
    @Request() req: RequestWithUser,
    @Query() query: string = "",
    @Query() status?: Status,
    @Query() page: number = 1,
    @Query() pageSize: number = 30,
  ) {
    const where = {
      OR: [{ name: { contains: query } }, { detail: { contains: query } }],
      AND: [
        {
          ...filterStatus(status),
          registeredBranch: isSystem(req.user) ? undefined : { OR: permissionCond(req.user) },
        },
      ],
    } satisfies Prisma.ProductGroupWhereInput;

    const [result, total] = await prisma.$transaction([
      prisma.productGroup.findMany({
        include: {
          _count: {
            select: {
              service: true,
              product: true,
            },
          },
          registeredBranch: true,
          createdBy: true,
          updatedBy: true,
        },
        orderBy: [{ statusOrder: "asc" }, { createdAt: "asc" }],
        where,
        take: pageSize,
        skip: (page - 1) * pageSize,
      }),
      prisma.productGroup.count({ where }),
    ]);

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

  @Get("{groupId}")
  @Security("keycloak")
  async getProductGroupById(@Path() groupId: string) {
    const record = await prisma.productGroup.findFirst({
      include: {
        registeredBranch: true,
      },
      where: { id: groupId },
    });

    if (!record) throw notFoundError("Product Group");

    return record;
  }

  @Post()
  @Security("keycloak", MANAGE_ROLES)
  async createProductGroup(@Request() req: RequestWithUser, @Body() body: ProductGroupCreate) {
    let company = await permissionCheck(req.user, body.registeredBranchId).then(
      (v) => (v.headOffice || v).code,
    );

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

        return await tx.productGroup.create({
          include: {
            createdBy: true,
            updatedBy: true,
          },
          data: {
            ...body,
            statusOrder: +(body.status === "INACTIVE"),
            code: `G${last.value.toString().padStart(2, "0")}`,
            createdByUserId: req.user.sub,
            updatedByUserId: req.user.sub,
          },
        });
      },
      { isolationLevel: Prisma.TransactionIsolationLevel.Serializable },
    );

    this.setStatus(HttpStatus.CREATED);

    return record;
  }

  @Put("{groupId}")
  @Security("keycloak", MANAGE_ROLES)
  async editProductGroup(
    @Request() req: RequestWithUser,
    @Body() body: ProductGroupUpdate,
    @Path() groupId: string,
  ) {
    const record = await prisma.productGroup.findUnique({
      where: { id: groupId },
      include: {
        registeredBranch: {
          include: branchRelationPermInclude(req.user),
        },
      },
    });
    if (!record) throw notFoundError("Product Group");

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

    const [branch] = await prisma.$transaction([
      prisma.branch.findFirst({
        where: { id: body.registeredBranchId },
        include: branchRelationPermInclude(req.user),
      }),
    ]);

    if (body.registeredBranchId !== undefined) {
      await permissionCheck(req.user, branch);
    }

    if (!!body.registeredBranchId && !branch) throw relationError("Branch");

    let companyBefore = (record.registeredBranch.headOffice || record.registeredBranch).code;
    let companyAfter =
      !!body.registeredBranchId && branch ? (branch.headOffice || branch).code : false;

    if (companyBefore && companyAfter && companyBefore !== companyAfter) {
      throw new HttpError(
        HttpStatus.BAD_REQUEST,
        "Cannot move between different headoffice",
        "crossCompanyNotPermit",
      );
    }

    const result = await prisma.productGroup.update({
      include: {
        createdBy: true,
        updatedBy: true,
      },
      data: { ...body, statusOrder: +(body.status === "INACTIVE"), updatedByUserId: req.user.sub },
      where: { id: groupId },
    });

    return result;
  }

  @Delete("{groupId}")
  @Security("keycloak", MANAGE_ROLES)
  async deleteProductGroup(@Request() req: RequestWithUser, @Path() groupId: string) {
    const record = await prisma.productGroup.findFirst({
      where: { id: groupId },
      include: {
        registeredBranch: {
          include: branchRelationPermInclude(req.user),
        },
      },
    });

    if (!record) throw notFoundError("Product Group");

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

    if (record.status !== Status.CREATED) throw isUsedError("Product Group");

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