import {
  Body,
  Controller,
  Delete,
  Get,
  HttpCode,
  HttpStatus,
  Param,
  Patch,
  Post,
  Query,
  UseGuards,
} from '@nestjs/common';
import { ApiBearerAuth, ApiTags, ApiQuery } from '@nestjs/swagger';
import { Roles } from '~/auth/enums';
import { IJwtPayload } from '~/auth/interfaces';
import { AllowedRoles, AuthenticatedUser, Public } from '~/common/decorators';
import { RolesGuard } from '~/common/guards';
import { ApiDataPageResponse, ApiDataResponse, ApiLangRequestHeader } from '~/core/decorators';
import { PageOptionsRequestDto } from '~/core/dtos';
import { CustomParseUUIDPipe } from '~/core/pipes';
import { ResponseFactory } from '~/core/utils';
import {
  CreateJuniorRequestDto,
  SetThemeRequestDto,
  TransferToJuniorRequestDto,
  UpdateJuniorRequestDto,
} from '../dtos/request';
import {
  JuniorResponseDto,
  QrCodeValidationResponseDto,
  ThemeResponseDto,
  TransferToJuniorResponseDto,
} from '../dtos/response';
import { WeeklySummaryResponseDto } from '../dtos/response/weekly-summary.response.dto';
import { JuniorHomeResponseDto, PagedChildTransfersResponseDto } from '~/card/dtos/responses';
import { JuniorService } from '../services';

@Controller('juniors')
@ApiTags('Juniors')
@ApiBearerAuth()
@ApiLangRequestHeader()
export class JuniorController {
  constructor(private readonly juniorService: JuniorService) {}

  @Post()
  @UseGuards(RolesGuard)
  @AllowedRoles(Roles.GUARDIAN)
  @ApiDataResponse(JuniorResponseDto)
  async createJunior(@Body() body: CreateJuniorRequestDto, @AuthenticatedUser() user: IJwtPayload) {
    const token = await this.juniorService.createJuniors(body, user.sub);

    return ResponseFactory.data(token);
  }

  @Get()
  @UseGuards(RolesGuard)
  @AllowedRoles(Roles.GUARDIAN)
  @ApiDataPageResponse(JuniorResponseDto)
  async findJuniors(@AuthenticatedUser() user: IJwtPayload, @Query() pageOptions: PageOptionsRequestDto) {
    const [juniors, count] = await this.juniorService.findJuniorsByGuardianId(user.sub, pageOptions);

    return ResponseFactory.dataPage(
      juniors.map((juniors) => new JuniorResponseDto(juniors)),
      {
        page: pageOptions.page,
        size: pageOptions.size,
        itemCount: count,
      },
    );
  }

  @Get(':juniorId')
  @UseGuards(RolesGuard)
  @AllowedRoles(Roles.GUARDIAN)
  @ApiDataResponse(JuniorResponseDto)
  async findJuniorById(
    @AuthenticatedUser() user: IJwtPayload,
    @Param('juniorId', CustomParseUUIDPipe) juniorId: string,
  ) {
    const junior = await this.juniorService.findJuniorById(juniorId, false, user.sub);

    return ResponseFactory.data(new JuniorResponseDto(junior));
  }

  @Patch(':juniorId')
  @UseGuards(RolesGuard)
  @AllowedRoles(Roles.GUARDIAN)
  @ApiDataResponse(JuniorResponseDto)
  async updateJunior(
    @AuthenticatedUser() user: IJwtPayload,
    @Param('juniorId', CustomParseUUIDPipe) juniorId: string,
    @Body() body: UpdateJuniorRequestDto,
  ) {
    const junior = await this.juniorService.updateJunior(juniorId, body, user.sub);

    return ResponseFactory.data(new JuniorResponseDto(junior));
  }

  @Delete(':juniorId')
  @UseGuards(RolesGuard)
  @AllowedRoles(Roles.GUARDIAN)
  @HttpCode(HttpStatus.NO_CONTENT)
  async deleteJunior(@AuthenticatedUser() user: IJwtPayload, @Param('juniorId', CustomParseUUIDPipe) juniorId: string) {
    await this.juniorService.deleteJunior(juniorId, user.sub);
  }

  @Post('set-theme')
  @UseGuards(RolesGuard)
  @AllowedRoles(Roles.JUNIOR)
  @ApiDataResponse(JuniorResponseDto)
  async setTheme(@Body() body: SetThemeRequestDto, @AuthenticatedUser() user: IJwtPayload) {
    const theme = await this.juniorService.setTheme(body, user.sub);
    return ResponseFactory.data(new ThemeResponseDto(theme));
  }

  @Get(':juniorId/qr-code')
  @UseGuards(RolesGuard)
  @AllowedRoles(Roles.GUARDIAN)
  @ApiDataResponse('string')
  async generateQrCode(@Param('juniorId', CustomParseUUIDPipe) juniorId: string) {
    const qrCode = await this.juniorService.generateToken(juniorId);

    return ResponseFactory.data(qrCode);
  }

  @Get('qr-code/:token/validate')
  @Public()
  @ApiDataResponse(QrCodeValidationResponseDto)
  async validateToken(@Param('token') token: string) {
    const junior = await this.juniorService.validateToken(token);

    return ResponseFactory.data(new QrCodeValidationResponseDto(junior));
  }

  @Post(':juniorId/transfer')
  @UseGuards(RolesGuard)
  @AllowedRoles(Roles.GUARDIAN)
  @ApiDataResponse(TransferToJuniorResponseDto)
  async transferToJunior(
    @AuthenticatedUser() user: IJwtPayload,
    @Param('juniorId', CustomParseUUIDPipe) juniorId: string,
    @Body() body: TransferToJuniorRequestDto,
  ) {
    const newAmount = await this.juniorService.transferToJunior(juniorId, body, user.sub);

    return ResponseFactory.data(new TransferToJuniorResponseDto(newAmount));
  }

  @Get(':juniorId/weekly-summary')
  @UseGuards(RolesGuard)
  @AllowedRoles(Roles.GUARDIAN)
  @ApiDataResponse(WeeklySummaryResponseDto)
  @ApiQuery({ name: 'startUtc', required: false, type: String, example: '2025-10-20T00:00:00.000Z', description: 'Start date (defaults to start of current week)' })
  @ApiQuery({ name: 'endUtc', required: false, type: String, example: '2025-10-26T23:59:59.999Z', description: 'End date (defaults to end of current week)' })
  async getWeeklySummary(
    @Param('juniorId', CustomParseUUIDPipe) juniorId: string,
    @AuthenticatedUser() user: IJwtPayload,
    @Query('startUtc') startUtc?: string,
    @Query('endUtc') endUtc?: string,
  ) {
    const startDate = startUtc ? new Date(startUtc) : undefined;
    const endDate = endUtc ? new Date(endUtc) : undefined;
    const summary = await this.juniorService.getWeeklySummary(juniorId, user.sub, startDate, endDate);
    return ResponseFactory.data(summary);
  }

  @Get(':juniorId/home')
  @UseGuards(RolesGuard)
  @AllowedRoles(Roles.JUNIOR, Roles.GUARDIAN)
  @ApiQuery({ name: 'size', required: false, type: Number, example: 5 })
  @ApiDataResponse(JuniorHomeResponseDto)
  async getJuniorHome(
    @Param('juniorId', CustomParseUUIDPipe) juniorId: string,
    @AuthenticatedUser() user: IJwtPayload,
    @Query('size') size?: number,
  ) {
    const limit = Math.max(1, Math.min(Number(size) || 5, 20));
    const res = await this.juniorService.getJuniorHome(juniorId, user.sub, limit);
    return ResponseFactory.data(res);
  }

  @Get(':juniorId/transfers')
  @UseGuards(RolesGuard)
  @AllowedRoles(Roles.JUNIOR, Roles.GUARDIAN)
  @ApiQuery({ name: 'page', required: false, type: Number, example: 1 })
  @ApiQuery({ name: 'size', required: false, type: Number, example: 10 })
  @ApiDataResponse(PagedChildTransfersResponseDto)
  async getJuniorTransfers(
    @Param('juniorId', CustomParseUUIDPipe) juniorId: string,
    @AuthenticatedUser() user: IJwtPayload,
    @Query('page') page?: number,
    @Query('size') size?: number,
  ) {
    const pageNum = Math.max(1, Number(page) || 1);
    const pageSize = Math.max(1, Math.min(Number(size) || 10, 50));
    const res = await this.juniorService.getJuniorTransfers(juniorId, user.sub, pageNum, pageSize);
    return ResponseFactory.data(res);
  }

  @Get(':juniorId/spending-history')
  @UseGuards(RolesGuard)
  @AllowedRoles(Roles.JUNIOR, Roles.GUARDIAN)
  @ApiQuery({ name: 'startUtc', required: true, type: String, example: '2025-01-01T00:00:00.000Z' })
  @ApiQuery({ name: 'endUtc', required: true, type: String, example: '2025-01-31T23:59:59.999Z' })
  async getSpendingHistory(
    @Param('juniorId', CustomParseUUIDPipe) juniorId: string,
    @AuthenticatedUser() user: IJwtPayload,
    @Query('startUtc') startUtc: string,
    @Query('endUtc') endUtc: string,
  ) {
    const res = await this.juniorService.getSpendingHistory(juniorId, user.sub, new Date(startUtc), new Date(endUtc));
    return ResponseFactory.data(res);
  }

  @Get(':juniorId/transactions/:transactionId')
  @UseGuards(RolesGuard)
  @AllowedRoles(Roles.JUNIOR, Roles.GUARDIAN)
  async getTransactionDetail(
    @Param('juniorId', CustomParseUUIDPipe) juniorId: string,
    @Param('transactionId', CustomParseUUIDPipe) transactionId: string,
    @AuthenticatedUser() user: IJwtPayload,
  ) {
    const res = await this.juniorService.getTransactionDetail(juniorId, user.sub, transactionId);
    return ResponseFactory.data(res);
  }
}