import { Body, Controller, Get, Param, Post, Put, Query, Res, UseGuards } from '@nestjs/common';
import type { Response } from 'express';
import { Transform } from 'class-transformer';
import { IsBoolean, IsOptional, IsString, MaxLength } from 'class-validator';
import { JwtAuthGuard, AuthUser } from '../../common/guards/jwt-auth.guard';
import { OptionalJwtAuthGuard } from '../../common/guards/optional-jwt-auth.guard';
import { PartnerPrimaryGuard } from '../../common/guards/partner-primary.guard';
import { PartnerPermissionGuard } from '../../common/guards/partner-permission.guard';
import { CurrentUser } from '../../common/decorators/current-user.decorator';
import { PartnerAssocService } from './partner-assoc.service';

class BindPartnerAssocDto {
  @IsOptional()
  @IsString()
  scene?: string;

  @IsOptional()
  @IsString()
  partnerId?: string;
}

class TouchPartnerAssocDto extends BindPartnerAssocDto {
  @IsOptional()
  @Transform(({ value }) => {
    if (value === false || value === 'false' || value === 0 || value === '0') return false;
    if (value === true || value === 'true' || value === 1 || value === '1') return true;
    return undefined;
  })
  @IsBoolean()
  countScan?: boolean;
}

class PartnerAssocRemarkDto {
  @IsOptional()
  @IsString()
  @MaxLength(128)
  remark?: string | null;
}

@Controller('user/partner-assoc')
export class UserPartnerAssocPublicController {
  constructor(private readonly assoc: PartnerAssocService) {}

  @Post('touch')
  @UseGuards(OptionalJwtAuthGuard)
  touch(@Body() dto: TouchPartnerAssocDto) {
    return this.assoc.touchScan({
      scene: dto.scene,
      partnerId: dto.partnerId,
      countScan: dto.countScan,
    });
  }
}

@Controller('user/partner-assoc')
@UseGuards(JwtAuthGuard)
export class UserPartnerAssocController {
  constructor(private readonly assoc: PartnerAssocService) {}

  @Post('bind')
  bind(@CurrentUser() user: AuthUser, @Body() dto: BindPartnerAssocDto) {
    return this.assoc.bindUser(user.actorId, dto);
  }
}

@Controller('partner/assoc')
@UseGuards(JwtAuthGuard, PartnerPermissionGuard)
export class PartnerAssocController {
  constructor(private readonly assoc: PartnerAssocService) {}

  @Get()
  summary(@CurrentUser() user: AuthUser) {
    return this.assoc.getSummary(user.actorId);
  }

  @Get('stats')
  stats(@CurrentUser() user: AuthUser) {
    return this.assoc.getStats(user.actorId);
  }

  @Get('orders')
  assocOrders(
    @CurrentUser() user: AuthUser,
    @Query('page') page = '1',
    @Query('pageSize') pageSize = '20',
  ) {
    return this.assoc.listAssocOrders(user.actorId, Number(page) || 1, Number(pageSize) || 20);
  }

  @Get('users')
  users(
    @CurrentUser() user: AuthUser,
    @Query('page') page = '1',
    @Query('pageSize') pageSize = '20',
    @Query('keyword') keyword?: string,
    @Query('sort') sort?: string,
  ) {
    const allowed = sort === 'createdAt' || sort === 'boundAt' || sort === 'orderCount' ? sort : undefined;
    return this.assoc.listUsers(user.actorId, Number(page) || 1, Number(pageSize) || 20, true, {
      keyword,
      sort: allowed,
    });
  }

  @Get('users/:userId/orders')
  userOrders(
    @CurrentUser() user: AuthUser,
    @Param('userId') userId: string,
    @Query('page') page = '1',
    @Query('pageSize') pageSize = '20',
  ) {
    return this.assoc.listAssocOrders(
      user.actorId,
      Number(page) || 1,
      Number(pageSize) || 20,
      BigInt(userId),
    );
  }

  @Put('users/:userId/remark')
  setRemark(
    @CurrentUser() user: AuthUser,
    @Param('userId') userId: string,
    @Body() dto: PartnerAssocRemarkDto,
  ) {
    return this.assoc.setUserRemark(user.actorId, BigInt(userId), dto.remark);
  }

  @Get('qrcode')
  async qrcode(@CurrentUser() user: AuthUser, @Res() res: Response) {
    const { buffer, fileName } = await this.assoc.getQrcodeBuffer(user.actorId);
    res.setHeader('Content-Type', 'image/png');
    res.setHeader('Content-Disposition', `attachment; filename="${fileName}"`);
    res.send(buffer);
  }
}

@Controller('partner/commissions')
@UseGuards(JwtAuthGuard, PartnerPrimaryGuard)
export class PartnerCommissionController {
  constructor(private readonly assoc: PartnerAssocService) {}

  @Get('orders')
  orders(
    @CurrentUser() user: AuthUser,
    @Query('page') page = '1',
    @Query('pageSize') pageSize = '20',
  ) {
    return this.assoc.listCommissionOrders(user.actorId, Number(page) || 1, Number(pageSize) || 20);
  }
}