import {
  Body,
  Controller,
  Delete,
  Get,
  Param,
  Patch,
  Post,
  Query,
  UseGuards,
} from '@nestjs/common';
import {
  IsBoolean,
  IsObject,
  IsOptional,
  IsString,
  MaxLength,
} from 'class-validator';
import { JwtAuthGuard } from '../auth/jwt-auth.guard';
import { RequirePermission, SectionPermissionGuard } from '../auth/section-permission.guard';
import { CurrentUser } from '../auth/current-user.decorator';
import type { Actor } from '../common/record-scope';
import { SavedViewsService } from '../saved-views/saved-views.service';
import { ReportsBuilderQueryDto, ReportsDrilldownQueryDto, ReportsQueryDto } from './dto';
import { ReportsService } from './reports.service';

class CreateReportViewDto {
  @IsString()
  @MaxLength(120)
  name!: string;

  @IsObject()
  filters!: Record<string, unknown>;

  @IsOptional()
  @IsBoolean()
  isShared?: boolean;
}

class UpdateReportViewDto {
  @IsOptional()
  @IsString()
  @MaxLength(120)
  name?: string;

  @IsOptional()
  @IsObject()
  filters?: Record<string, unknown>;

  @IsOptional()
  @IsBoolean()
  isShared?: boolean;
}

@Controller('reports')
@UseGuards(JwtAuthGuard, SectionPermissionGuard)
@RequirePermission('reports', { reads: true })
export class ReportsController {
  constructor(
    private readonly reportsService: ReportsService,
    private readonly savedViews: SavedViewsService,
  ) {}

  @Get('dashboard')
  dashboard(@CurrentUser() user: Actor, @Query() query: ReportsQueryDto) {
    return this.reportsService.dashboard(user, {
      from: query.from,
      to: query.to,
    });
  }

  @Get('drilldown')
  drilldown(
    @CurrentUser() user: Actor,
    @Query() query: ReportsDrilldownQueryDto,
  ) {
    return this.reportsService.drilldown(user, {
      kind: query.kind,
      id: query.id,
      from: query.from,
      to: query.to,
    });
  }

  @Post('builder')
  builder(
    @CurrentUser() user: Actor,
    @Body() dto: ReportsBuilderQueryDto,
  ) {
    return this.reportsService.builder(user, {
      metric: dto.metric,
      dimension: dto.dimension,
      from: dto.from,
      to: dto.to,
      userId: dto.userId,
      teamId: dto.teamId,
    });
  }

  /** داشبورد صفحهٔ خانه برای همه باز است */
  @Get('home')
  @RequirePermission('reports', { reads: false })
  home(@CurrentUser() user: Actor) {
    return this.reportsService.home(user);
  }

  @Get('views')
  listViews(@CurrentUser() user: Actor) {
    return this.savedViews.list(user.organizationId, user.userId, 'reports');
  }

  @Get('views/:id')
  getView(@CurrentUser() user: Actor, @Param('id') id: string) {
    return this.savedViews.get(user.organizationId, user.userId, id, 'reports');
  }

  @Post('views')
  createView(@CurrentUser() user: Actor, @Body() dto: CreateReportViewDto) {
    return this.savedViews.create(user.organizationId, user.userId, {
      name: dto.name,
      scope: 'reports',
      filters: dto.filters,
      isShared: dto.isShared,
    });
  }

  @Patch('views/:id')
  updateView(
    @CurrentUser() user: Actor,
    @Param('id') id: string,
    @Body() dto: UpdateReportViewDto,
  ) {
    const isAdmin = user.role === 'owner' || user.role === 'admin';
    return this.savedViews.update(
      user.organizationId,
      user.userId,
      id,
      {
        name: dto.name,
        filters: dto.filters,
        isShared: dto.isShared,
        scope: 'reports',
      },
      isAdmin,
      'reports',
    );
  }

  @Delete('views/:id')
  async removeView(@CurrentUser() user: Actor, @Param('id') id: string) {
    const isAdmin = user.role === 'owner' || user.role === 'admin';
    await this.savedViews.remove(
      user.organizationId,
      user.userId,
      id,
      isAdmin,
      'reports',
    );
    return { ok: true };
  }
}