import {
  Body,
  Controller,
  Delete,
  ForbiddenException,
  Get,
  Param,
  Put,
  UseGuards,
} from '@nestjs/common';
import { OidcAuthGuard } from '../../../../libs/auth/src';
import type { AuthenticatedUser } from '../../../../libs/auth/src';
import {
  TripMembershipGuard,
  TripPreferenceOverridesService,
} from '../../../../libs/trips/src';
import type {
  TripMemberRole,
  TripPreferenceOverride,
  UpsertPreferenceOverrideDto,
} from '../../../../libs/trips/src';
import { CurrentUser } from '../auth/current-user.decorator';
import { CurrentTripRole } from './current-trip-role.decorator';

@Controller('trips/:tripId/preference-overrides')
@UseGuards(OidcAuthGuard, TripMembershipGuard)
export class TripPreferenceOverridesController {
  constructor(private readonly service: TripPreferenceOverridesService) {}

  @Get()
  list(@Param('tripId') tripId: string): Promise<TripPreferenceOverride[]> {
    return this.service.listOverrides(tripId);
  }

  @Put()
  async upsert(
    @Param('tripId') tripId: string,
    @CurrentUser() currentUser: AuthenticatedUser,
    @CurrentTripRole() role: TripMemberRole,
    @Body() dto: UpsertPreferenceOverrideDto,
  ): Promise<TripPreferenceOverride> {
    const isOwnUserOverride =
      dto.subject.type === 'USER' && dto.subject.userId === currentUser.id;
    if (role !== 'OWNER' && !isOwnUserOverride) {
      throw new ForbiddenException(
        'Only the trip owner may set preference overrides for other members or travelers',
      );
    }
    return this.service.upsertOverride(tripId, dto.subject, dto.overrides);
  }

  @Delete(':overrideId')
  remove(
    @Param('tripId') tripId: string,
    @Param('overrideId') overrideId: string,
  ): Promise<void> {
    return this.service.removeOverride(tripId, overrideId);
  }
}