import {
  Body,
  Controller,
  Delete,
  HttpCode,
  Param,
  ParseUUIDPipe,
  Patch,
  Post,
  UseGuards,
} from '@nestjs/common';
import {
  ApiBearerAuth,
  ApiCreatedResponse,
  ApiForbiddenResponse,
  ApiNoContentResponse,
  ApiNotFoundResponse,
  ApiOkResponse,
  ApiOperation,
  ApiTags,
  ApiUnauthorizedResponse,
} from '@nestjs/swagger';
import type { AuthUser } from '../../../common/auth/auth-user';
import { CurrentUser } from '../../../common/decorators/current-user.decorator';
import { BEARER_AUTH_NAME } from '../../../common/swagger/setup-swagger';
import { RequireFieldPrivilege } from '../shared/field-privilege.decorator';
import { FieldPrivilegeGuard } from '../shared/field-privilege.guard';
import {
  AddPlanDestinationDto,
  BulkIdsDto,
  BulkStatusDto,
  CreatePlanDto,
  GeneratePlansDto,
  PlanDto,
  UpdatePlanDto,
  UpdatePlanStatusDto,
} from './dto/plan.dto';
import { PlansService } from './plans.service';

@ApiTags('plans')
@ApiBearerAuth(BEARER_AUTH_NAME)
@UseGuards(FieldPrivilegeGuard)
@Controller('plans')
export class PlansWriteController {
  constructor(private readonly plansService: PlansService) {}

  @Post('generate')
  @RequireFieldPrivilege('plan', 'create')
  @ApiOperation({ summary: 'Generate plans from cycles for a date range' })
  @ApiOkResponse({
    schema: {
      properties: {
        created: { type: 'number' },
        skipped: { type: 'number' },
      },
    },
  })
  @ApiUnauthorizedResponse()
  @ApiForbiddenResponse()
  generate(
    @Body() dto: GeneratePlansDto,
    @CurrentUser('id') userId: string,
  ): Promise<{ created: number; skipped: number }> {
    return this.plansService.generate({ ...dto, userId });
  }

  @Post('bulk-delete')
  @HttpCode(200)
  @RequireFieldPrivilege('plan', 'delete')
  @ApiOperation({ summary: 'Bulk archive plans' })
  @ApiOkResponse({ schema: { properties: { deleted: { type: 'number' } } } })
  bulkDelete(
    @Body() dto: BulkIdsDto,
    @CurrentUser() user: AuthUser,
  ): Promise<{ deleted: number }> {
    return this.plansService.bulkDelete(dto.ids, user);
  }

  @Post('bulk-status')
  @HttpCode(200)
  @RequireFieldPrivilege('plan', 'update')
  @ApiOperation({ summary: 'Bulk update plan status' })
  @ApiOkResponse({ schema: { properties: { updated: { type: 'number' } } } })
  bulkStatus(
    @Body() dto: BulkStatusDto,
    @CurrentUser() user: AuthUser,
  ): Promise<{ updated: number }> {
    return this.plansService.bulkUpdateStatus(
      dto.ids,
      dto.status,
      user.id,
      user,
    );
  }

  @Post()
  @RequireFieldPrivilege('plan', 'create')
  @ApiOperation({ summary: 'Create plan' })
  @ApiCreatedResponse({ type: PlanDto })
  create(
    @Body() dto: CreatePlanDto,
    @CurrentUser('id') userId: string,
  ): Promise<PlanDto> {
    return this.plansService.create({ ...dto, userId });
  }

  @Post(':id/destinations')
  @RequireFieldPrivilege('plan', 'update')
  @ApiOperation({ summary: 'Add a destination to a plan' })
  @ApiOkResponse({ type: PlanDto })
  addDestination(
    @Param('id', ParseUUIDPipe) id: string,
    @Body() dto: AddPlanDestinationDto,
    @CurrentUser() user: AuthUser,
  ): Promise<PlanDto> {
    return this.plansService.addDestination(
      id,
      dto.customerId,
      dto.afterDestinationId,
      user,
    );
  }

  @Delete(':id/destinations/:destinationId')
  @RequireFieldPrivilege('plan', 'update')
  @ApiOperation({ summary: 'Remove a destination from a plan' })
  @ApiOkResponse({ type: PlanDto })
  removeDestination(
    @Param('id', ParseUUIDPipe) id: string,
    @Param('destinationId', ParseUUIDPipe) destinationId: string,
    @CurrentUser() user: AuthUser,
  ): Promise<PlanDto> {
    return this.plansService.removeDestination(id, destinationId, user);
  }

  @Patch(':id/status')
  @RequireFieldPrivilege('plan', 'update')
  @ApiOperation({ summary: 'Update plan status' })
  @ApiOkResponse({ type: PlanDto })
  updateStatus(
    @Param('id', ParseUUIDPipe) id: string,
    @Body() dto: UpdatePlanStatusDto,
    @CurrentUser() user: AuthUser,
  ): Promise<PlanDto> {
    return this.plansService.updateStatus(id, dto.status, user.id, user);
  }

  @Patch(':id')
  @RequireFieldPrivilege('plan', 'update')
  @ApiOperation({ summary: 'Update plan (not status)' })
  @ApiOkResponse({ type: PlanDto })
  @ApiNotFoundResponse()
  update(
    @Param('id', ParseUUIDPipe) id: string,
    @Body() dto: UpdatePlanDto,
    @CurrentUser() user: AuthUser,
  ): Promise<PlanDto> {
    return this.plansService.update(id, { ...dto, userId: user.id }, user);
  }

  @Delete(':id')
  @HttpCode(204)
  @RequireFieldPrivilege('plan', 'delete')
  @ApiOperation({ summary: 'Archive plan' })
  @ApiNoContentResponse()
  @ApiUnauthorizedResponse()
  @ApiForbiddenResponse()
  async delete(
    @Param('id', ParseUUIDPipe) id: string,
    @CurrentUser() user: AuthUser,
  ): Promise<void> {
    await this.plansService.delete(id, user);
  }
}