import {
  Body,
  Controller,
  Delete,
  Get,
  Put,
  Path,
  Post,
  Request,
  Route,
  Security,
  Tags,
  Query,
} 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 {
  branchRelationPermInclude,
  createPermCheck,
  createPermCondition,
} from "../services/permission";
import { isSystem } from "../utils/keycloak";
import { filterStatus } from "../services/prisma";
import { deleteFile, fileLocation, getFile, listFile, setFile } from "../utils/minio";
import { isUsedError, notFoundError, relationError } from "../utils/error";

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

type ProductCreate = {
  status?: Status;
  code:
    | "DOE"
    | "IMM"
    | "TM"
    | "HP"
    | "MOUC"
    | "MOUL"
    | "AC"
    | "doe"
    | "imm"
    | "tm"
    | "hp"
    | "mouc"
    | "moul"
    | "ac";
  name: string;
  detail: string;
  process: number;
  price: number;
  agentPrice: number;
  serviceCharge: number;
  vatIncluded?: boolean;
  expenseType?: string;
  selectedImage?: string;
  shared?: boolean;
  productGroupId: string;
  remark?: string;
};

type ProductUpdate = {
  status?: "ACTIVE" | "INACTIVE";
  name?: string;
  detail?: string;
  process?: number;
  price?: number;
  agentPrice?: number;
  serviceCharge?: number;
  remark?: string;
  vatIncluded?: boolean;
  expenseType?: string;
  selectedImage?: string;
  shared?: boolean;
  productGroupId?: string;
};

@Route("api/v1/product")
@Tags("Product")
export class ProductController extends Controller {
  @Get("stats")
  @Security("keycloak")
  async getProductStats(@Request() req: RequestWithUser, @Query() productGroupId?: string) {
    return await prisma.product.count({
      where: {
        productGroupId,
        OR: isSystem(req.user)
          ? undefined
          : [
              {
                productGroup: {
                  registeredBranch: { OR: permissionCond(req.user) },
                },
              },
              {
                shared: true,
                productGroup: {
                  registeredBranch: { OR: permissionCondCompany(req.user) },
                },
              },
            ],
      },
    });
  }

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

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

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

  @Get("{productId}")
  @Security("keycloak")
  async getProductById(@Path() productId: string) {
    const record = await prisma.product.findFirst({
      include: {
        createdBy: true,
        updatedBy: true,
      },
      where: { id: productId },
    });

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

    return record;
  }

  @Post()
  @Security("keycloak", MANAGE_ROLES)
  async createProduct(@Request() req: RequestWithUser, @Body() body: ProductCreate) {
    const [productGroup, productSameName] = await prisma.$transaction([
      prisma.productGroup.findFirst({
        include: {
          registeredBranch: {
            include: branchRelationPermInclude(req.user),
          },
          createdBy: true,
          updatedBy: true,
        },
        where: { id: body.productGroupId },
      }),
      prisma.product.findMany({
        where: {
          productGroup: {
            registeredBranch: {
              OR: permissionCondCompany(req.user),
            },
          },
          name: body.name,
        },
      }),
    ]);

    if (!productGroup) throw relationError("Product Group");

    if (productSameName.some((v) => v.code.slice(0, -3) === body.code.toUpperCase())) {
      throw new HttpError(
        HttpStatus.BAD_REQUEST,
        "Product with the same name and code already exists",
        "productNameExists",
      );
    }

    await permissionCheck(req.user, productGroup.registeredBranch);

    const record = await prisma.$transaction(
      async (tx) => {
        const branch = productGroup.registeredBranch;
        const company = (branch.headOffice || branch).code;
        const last = await tx.runningNo.upsert({
          where: {
            key: `PRODUCT_${company}_${body.code.toLocaleUpperCase()}`,
          },
          create: {
            key: `PRODUCT_${company}_${body.code.toLocaleUpperCase()}`,
            value: 1,
          },
          update: { value: { increment: 1 } },
        });
        return await prisma.product.create({
          include: {
            createdBy: true,
            updatedBy: true,
          },
          data: {
            ...body,
            statusOrder: +(body.status === "INACTIVE"),
            code: `${body.code.toLocaleUpperCase()}${last.value.toString().padStart(3, "0")}`,
            createdByUserId: req.user.sub,
            updatedByUserId: req.user.sub,
          },
        });
      },
      {
        isolationLevel: Prisma.TransactionIsolationLevel.Serializable,
      },
    );

    if (productGroup.status === "CREATED") {
      await prisma.productGroup.update({
        include: {
          createdBy: true,
          updatedBy: true,
        },
        where: { id: body.productGroupId },
        data: { status: Status.ACTIVE },
      });
    }

    this.setStatus(HttpStatus.CREATED);

    return record;
  }

  @Put("{productId}")
  @Security("keycloak", MANAGE_ROLES)
  async editProduct(
    @Request() req: RequestWithUser,
    @Body() body: ProductUpdate,
    @Path() productId: string,
  ) {
    const [product, productGroup] = await prisma.$transaction([
      prisma.product.findUnique({
        include: {
          productGroup: {
            include: {
              registeredBranch: {
                include: branchRelationPermInclude(req.user),
              },
            },
          },
        },
        where: { id: productId },
      }),
      prisma.productGroup.findFirst({
        include: {
          registeredBranch: {
            include: branchRelationPermInclude(req.user),
          },
          createdBy: true,
          updatedBy: true,
        },
        where: { id: body.productGroupId },
      }),
    ]);

    if (!product) throw notFoundError("Product");
    if (!!body.productGroupId && !productGroup) throw relationError("Product Group");

    await permissionCheck(req.user, product.productGroup.registeredBranch);
    if (body.productGroupId && productGroup) {
      await permissionCheck(req.user, productGroup.registeredBranch);
    }

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

    if (productGroup?.status === "CREATED") {
      await prisma.productGroup.updateMany({
        where: { id: body.productGroupId, status: Status.CREATED },
        data: { status: Status.ACTIVE },
      });
    }

    return record;
  }

  @Delete("{productId}")
  @Security("keycloak", MANAGE_ROLES)
  async deleteProduct(@Request() req: RequestWithUser, @Path() productId: string) {
    const record = await prisma.product.findFirst({
      include: {
        productGroup: {
          include: {
            registeredBranch: {
              include: branchRelationPermInclude(req.user),
            },
          },
        },
      },

      where: { id: productId },
    });

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

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

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

@Route("api/v1/product/{productId}")
@Tags("Product")
export class ProductFileController extends Controller {
  async checkPermission(user: RequestWithUser["user"], id: string) {
    const data = await prisma.product.findUnique({
      include: {
        productGroup: {
          include: {
            registeredBranch: {
              include: branchRelationPermInclude(user),
            },
          },
        },
      },
      where: { id },
    });
    if (!data) throw notFoundError("Product");
    await permissionCheck(user, data.productGroup.registeredBranch);
  }

  @Get("image")
  @Security("keycloak")
  async listImage(@Request() req: RequestWithUser, @Path() productId: string) {
    await this.checkPermission(req.user, productId);
    return await listFile(fileLocation.product.img(productId));
  }

  @Get("image/{name}")
  async getImage(@Request() req: RequestWithUser, @Path() productId: string, @Path() name: string) {
    return req.res?.redirect(await getFile(fileLocation.product.img(productId, name)));
  }

  @Put("image/{name}")
  @Security("keycloak")
  async putImage(@Request() req: RequestWithUser, @Path() productId: string, @Path() name: string) {
    if (!req.headers["content-type"]?.startsWith("image/")) {
      throw new HttpError(HttpStatus.BAD_REQUEST, "Not a valid image.", "notValidImage");
    }
    await this.checkPermission(req.user, productId);
    return req.res?.redirect(await setFile(fileLocation.product.img(productId, name)));
  }

  @Delete("image/{name}")
  @Security("keycloak")
  async delImage(@Request() req: RequestWithUser, @Path() productId: string, @Path() name: string) {
    await this.checkPermission(req.user, productId);
    return await deleteFile(fileLocation.product.img(productId, name));
  }
}