import {
  BadRequestException,
  Body,
  Controller,
  Delete,
  HttpCode,
  Param,
  ParseUUIDPipe,
  Patch,
  Post,
  UploadedFile,
  UseInterceptors,
} from '@nestjs/common';
import { FileInterceptor } from '@nestjs/platform-express';
import {
  ApiBearerAuth,
  ApiBody,
  ApiConsumes,
  ApiCreatedResponse,
  ApiForbiddenResponse,
  ApiNoContentResponse,
  ApiNotFoundResponse,
  ApiOkResponse,
  ApiOperation,
  ApiTags,
  ApiUnauthorizedResponse,
} from '@nestjs/swagger';
import { CurrentUser } from '../../../common/decorators/current-user.decorator';
import { RequirePrivilege } from '../../../common/decorators/require-privilege.decorator';
import { BEARER_AUTH_NAME } from '../../../common/swagger/setup-swagger';
import { isAllowedCsvUpload } from '../shared/sales-fields';
import { SALES_INVOICE_PRIVILEGE_KEYS } from './sales-invoices-read.controller';
import { SalesInvoicesService } from './sales-invoices.service';
import {
  BulkIdsDto,
  BulkStatusDto,
  CreateSalesInvoiceDto,
  SalesInvoiceDto,
  UpdateSalesInvoiceDto,
  UpdateSalesInvoiceStatusDto,
} from './dto/sales-invoice.dto';

@ApiTags('sales-invoices')
@ApiBearerAuth(BEARER_AUTH_NAME)
@Controller('sales-invoices')
export class SalesInvoicesWriteController {
  constructor(private readonly salesInvoicesService: SalesInvoicesService) {}

  @Post('import')
  @RequirePrivilege(SALES_INVOICE_PRIVILEGE_KEYS, 'import')
  @UseInterceptors(
    FileInterceptor('file', {
      limits: { fileSize: 1_048_576 },
      fileFilter: (_req, file, cb) => {
        if (!isAllowedCsvUpload(file)) {
          cb(new BadRequestException('Only CSV files are allowed'), false);
          return;
        }
        cb(null, true);
      },
    }),
  )
  @ApiConsumes('multipart/form-data')
  @ApiBody({
    schema: {
      type: 'object',
      properties: {
        file: { type: 'string', format: 'binary' },
      },
      required: ['file'],
    },
  })
  @ApiOperation({ summary: 'Import sales invoices from CSV' })
  @ApiOkResponse({
    schema: { properties: { imported: { type: 'number' } } },
  })
  @ApiUnauthorizedResponse()
  @ApiForbiddenResponse()
  importCsv(
    @UploadedFile() file: { buffer?: Buffer } | undefined,
    @CurrentUser('id') userId: string,
  ): Promise<{ imported: number }> {
    const csv = file?.buffer?.toString('utf8') ?? '';
    return this.salesInvoicesService.importCsv(csv, userId);
  }

  @Post('bulk-delete')
  @HttpCode(200)
  @RequirePrivilege(SALES_INVOICE_PRIVILEGE_KEYS, 'delete')
  @ApiOperation({ summary: 'Bulk delete sales invoices' })
  @ApiOkResponse({
    schema: { properties: { deleted: { type: 'number' } } },
  })
  @ApiUnauthorizedResponse()
  @ApiForbiddenResponse()
  bulkDelete(@Body() dto: BulkIdsDto): Promise<{ deleted: number }> {
    return this.salesInvoicesService.bulkDelete(dto.ids);
  }

  @Post('bulk-status')
  @HttpCode(200)
  @RequirePrivilege(SALES_INVOICE_PRIVILEGE_KEYS, 'update')
  @ApiOperation({ summary: 'Bulk update sales invoice status' })
  @ApiOkResponse({
    schema: { properties: { updated: { type: 'number' } } },
  })
  @ApiUnauthorizedResponse()
  @ApiForbiddenResponse()
  bulkStatus(
    @Body() dto: BulkStatusDto,
    @CurrentUser('id') userId: string,
  ): Promise<{ updated: number }> {
    return this.salesInvoicesService.bulkUpdateStatus(
      dto.ids,
      dto.status,
      userId,
    );
  }

  @Post()
  @RequirePrivilege(SALES_INVOICE_PRIVILEGE_KEYS, 'create')
  @ApiOperation({ summary: 'Create sales invoice' })
  @ApiCreatedResponse({ type: SalesInvoiceDto })
  @ApiUnauthorizedResponse()
  @ApiForbiddenResponse()
  create(
    @Body() dto: CreateSalesInvoiceDto,
    @CurrentUser('id') userId: string,
  ): Promise<SalesInvoiceDto> {
    return this.salesInvoicesService.create({
      code: dto.code,
      salesOrderId: dto.salesOrderId,
      packingSlipId: dto.packingSlipId,
      date: dto.date,
      salesPersonId: dto.salesPersonId,
      branchId: dto.branchId,
      divisionId: dto.divisionId,
      customerId: dto.customerId,
      address: dto.address,
      latitude: dto.latitude,
      longitude: dto.longitude,
      notes: dto.notes,
      products: dto.products,
      status: dto.status,
      userId,
    });
  }

  @Patch(':id/status')
  @RequirePrivilege(SALES_INVOICE_PRIVILEGE_KEYS, 'update')
  @ApiOperation({ summary: 'Update sales invoice status' })
  @ApiOkResponse({ type: SalesInvoiceDto })
  @ApiNotFoundResponse()
  @ApiUnauthorizedResponse()
  @ApiForbiddenResponse()
  updateStatus(
    @Param('id', ParseUUIDPipe) id: string,
    @Body() dto: UpdateSalesInvoiceStatusDto,
    @CurrentUser('id') userId: string,
  ): Promise<SalesInvoiceDto> {
    return this.salesInvoicesService.updateStatus(id, dto.status, userId);
  }

  @Patch(':id')
  @RequirePrivilege(SALES_INVOICE_PRIVILEGE_KEYS, 'update')
  @ApiOperation({ summary: 'Update sales invoice (not status)' })
  @ApiOkResponse({ type: SalesInvoiceDto })
  @ApiNotFoundResponse()
  @ApiUnauthorizedResponse()
  @ApiForbiddenResponse()
  update(
    @Param('id', ParseUUIDPipe) id: string,
    @Body() dto: UpdateSalesInvoiceDto,
    @CurrentUser('id') userId: string,
  ): Promise<SalesInvoiceDto> {
    return this.salesInvoicesService.update(id, {
      code: dto.code,
      salesOrderId: dto.salesOrderId,
      packingSlipId: dto.packingSlipId,
      date: dto.date,
      salesPersonId: dto.salesPersonId,
      branchId: dto.branchId,
      divisionId: dto.divisionId,
      customerId: dto.customerId,
      address: dto.address,
      latitude: dto.latitude,
      longitude: dto.longitude,
      notes: dto.notes,
      products: dto.products,
      userId,
    });
  }

  @Delete(':id')
  @HttpCode(204)
  @RequirePrivilege(SALES_INVOICE_PRIVILEGE_KEYS, 'delete')
  @ApiOperation({ summary: 'Delete sales invoice' })
  @ApiNoContentResponse()
  @ApiNotFoundResponse()
  @ApiUnauthorizedResponse()
  @ApiForbiddenResponse()
  async delete(@Param('id', ParseUUIDPipe) id: string): Promise<void> {
    await this.salesInvoicesService.delete(id);
  }
}