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 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 ProductCreate = {
  code: "AC" | "DO" | "ac" | "do";
  name: string;
  detail: string;
  process: number;
  price: number;
  agentPrice: number;
  serviceCharge: number;
  productTypeId: string;
  remark?: string;
};

type ProductUpdate = {
  name?: string;
  detail?: string;
  process?: number;
  price?: number;
  agentPrice?: number;
  serviceCharge?: number;
  remark?: string;
  productTypeId?: string;
};

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

@Route("api/v1/product")
@Tags("Product")
@Security("keycloak")
export class ProductController extends Controller {
  @Get()
  async getProduct(
    @Query() status?: Status,
    @Query() productTypeId?: string,
    @Query() query: string = "",
    @Query() page: number = 1,
    @Query() pageSize: number = 30,
  ) {
    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) },
      ],
    } satisfies Prisma.ProductWhereInput;

    const [result, total] = await prisma.$transaction([
      prisma.product.findMany({
        orderBy: { createdAt: "asc" },
        where,
        take: pageSize,
        skip: (page - 1) * pageSize,
      }),
      prisma.product.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("{productId}")
  async getProductById(@Path() productId: string) {
    const record = await prisma.product.findFirst({
      where: { id: productId },
    });

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

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

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

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

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

  @Post()
  async createProduct(@Request() req: RequestWithUser, @Body() body: ProductCreate) {
    const productType = await prisma.productType.findFirst({
      where: { id: body.productTypeId },
    });

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

    const record = await prisma.$transaction(
      async (tx) => {
        const last = await tx.runningNo.upsert({
          where: {
            key: `PRODUCT_${body.code.toLocaleUpperCase()}`,
          },
          create: {
            key: `PRODUCT_${body.code.toLocaleUpperCase()}`,
            value: 1,
          },
          update: { value: { increment: 1 } },
        });
        return await prisma.product.create({
          data: {
            ...body,
            code: `${body.code.toLocaleUpperCase()}${last.value.toString().padStart(3, "0")}`,
            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("{productId}")
  async editProduct(
    @Request() req: RequestWithUser,
    @Body() body: ProductUpdate,
    @Path() productId: string,
  ) {
    if (!(await prisma.product.findUnique({ where: { id: productId } }))) {
      throw new HttpError(HttpStatus.NOT_FOUND, "Product cannot be found.", "productNotFound");
    }

    const record = await prisma.product.update({
      data: { ...body, updateBy: req.user.name },
      where: { id: productId },
    });

    const productType = await prisma.productType.findFirst({
      where: { id: body.productTypeId },
    });

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

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

  @Delete("{productId}")
  async deleteProduct(@Path() productId: string) {
    const record = await prisma.product.findFirst({ where: { id: productId } });

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

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

    return await prisma.product.delete({ where: { id: productId } });
  }
}