import {
  Controller,
  Get,
  Post,
  Put,
  Param,
  Body,
  Query,
  Inject,
  UseInterceptors,
  UploadedFiles,
  Headers,
} from '@nestjs/common';
import { ApiTags, ApiOperation, ApiConsumes } from '@nestjs/swagger';
import { FilesInterceptor } from '@nestjs/platform-express';
import { DadosferaLogger } from '@dadosfera/dadosfera-logs';
import FormData from 'form-data';

import {
  Authenticated,
  RequireAllPermissions,
} from '../../decorators/authentication.decorator';
import { User, RequestUser } from '../../decorators/user.decorator';
import { StorageExplorerService } from './storage-explorer.service';
import { PERMISSIONS_GROUPS } from '../../authentication/permissions.enum';

@ApiTags('Storage Explorer')
@Controller('storage-explorer')
@Authenticated()
export class StorageExplorerController {
  private logger: any;

  constructor(
    private readonly storageExplorerService: StorageExplorerService,
    @Inject(DadosferaLogger) dadosferaLogger: DadosferaLogger,
  ) {
    this.logger = dadosferaLogger.logger;
  }

  // ============================================
  // TABLE OPERATIONS
  // ============================================

  @ApiOperation({ summary: 'Validate table name in PostgreSQL and Snowflake' })
  @Post('tables/validate-name')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.WRITE)
  async validateTableName(
    @Body() body: any,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'POST',
      '/tables/validate-name',
      user,
      
      body,
    );
  }

  @ApiOperation({ summary: 'Create a new table' })
  @Post('tables')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.WRITE)
  async createTable(
    @Body() body: any,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'POST',
      '/tables/',
      user,
      
      body,
    );
  }

  @ApiOperation({ summary: 'List all tables with pagination' })
  @Get('tables')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.READ)
  async listTables(
    @Query('page') page: number,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'GET',
      '/tables/',
      user,
      
      undefined,
      { page },
    );
  }

  @ApiOperation({ summary: 'Get table details by ID' })
  @Get('tables/:tableId')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.READ)
  async getTable(
    @Param('tableId') tableId: string,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'GET',
      `/tables/${tableId}`,
      user,
    );
  }

  @ApiOperation({ summary: 'Link a dataset to a table' })
  @Post('tables/:tableId/datasets/:datasetId')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.WRITE)
  async linkDatasetToTable(
    @Param('tableId') tableId: string,
    @Param('datasetId') datasetId: string,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'POST',
      `/tables/${tableId}/datasets/${datasetId}`,
      user,
      
    );
  }

  @ApiOperation({ summary: 'Get all datasets linked to a table' })
  @Get('tables/:tableId/datasets')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.READ)
  async getTableDatasets(
    @Param('tableId') tableId: string,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'GET',
      `/tables/${tableId}/datasets`,
      user,
      
    );
  }

  @ApiOperation({ summary: 'Get table schema' })
  @Get('tables/:tableId/schema')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.READ)
  async getTableSchema(
    @Param('tableId') tableId: string,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'GET',
      `/tables/${tableId}/schema`,
      user,
      
    );
  }

  @ApiOperation({ summary: 'Validate schema compatibility between table and dataset' })
  @Post('tables/:tableId/validate-compatibility/:datasetId')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.READ)
  async validateSchemaCompatibility(
    @Param('tableId') tableId: string,
    @Param('datasetId') datasetId: string,
    @User() user: RequestUser,
  ) {
    return this.storageExplorerService.proxy(
      'POST',
      `/tables/${tableId}/validate-compatibility/${datasetId}`,
      user,
      
    );
  }

  // ============================================
  // DATASET OPERATIONS
  // ============================================

  @ApiOperation({ summary: 'Get dataset preview data' })
  @Get('datasets/:datasetId/preview')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.READ)
  async getDatasetPreview(
    @Param('datasetId') datasetId: string,
    @Query('limit') limit: number,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'GET',
      `/datasets/${datasetId}/preview`,
      user,
      
      undefined,
      { limit },
    );
  }

  @ApiOperation({ summary: 'Get dataset schema information' })
  @Get('datasets/:datasetId/schema')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.READ)
  async getDatasetSchema(
    @Param('datasetId') datasetId: string,
    @Query('force_refresh') forceRefresh: boolean,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'GET',
      `/datasets/${datasetId}/schema`,
      user,
      
      undefined,
      { force_refresh: forceRefresh },
    );
  }

  @ApiOperation({ summary: 'List all datasets for a specific upload' })
  @Get('datasets/upload/:uploadId')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.READ)
  async listDatasetsByUpload(
    @Param('uploadId') uploadId: string,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'GET',
      `/datasets/upload/${uploadId}`,
      user,
      
    );
  }

  @ApiOperation({ summary: 'Refresh dataset schema with new parsing options (Excel)' })
  @Put('datasets/:datasetId/refresh-schema')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.WRITE)
  async refreshDatasetSchema(
    @Param('datasetId') datasetId: string,
    @Body() body: any,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'PUT',
      `/datasets/${datasetId}/refresh-schema`,
      user,
      
      body,
    );
  }

  // ============================================
  // STORAGE OPERATIONS
  // ============================================

  @ApiOperation({ summary: 'List file explorer uploads with pagination' })
  @Get('storage/uploads/history')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.READ)
  async listFileExplorerUploads(
    @Query('page') page: number,
    @Query('limit') limit: number,
    @Query('folder_path') folderPath: string,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'GET',
      '/storage/uploads/history',
      user,
      
      undefined,
      { page, limit, folder_path: folderPath },
    );
  }

  @ApiOperation({ summary: 'Browse folders and files in storage' })
  @Get('storage/browse')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.READ)
  async browseStorage(
    @Query('path') path: string,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'GET',
      '/storage/browse',
      user,
      
      undefined,
      { path },
    );
  }

  @ApiOperation({ summary: 'Upload multiple files to storage' })
  @Post('storage/upload/batch')
  @ApiConsumes('multipart/form-data')
  @UseInterceptors(FilesInterceptor('files'))
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.WRITE)
  async batchUpload(
    @UploadedFiles() files: Array<Express.Multer.File>,
    @Body('folder_path') folderPath: string,
    @User() user: RequestUser,
    
  ) {
    // Create FormData to forward files to storage-explorer API
    const formData = new FormData();
    
    // Add files
    if (files && files.length > 0) {
      files.forEach((file) => {
        formData.append('files', file.buffer, {
          filename: file.originalname,
          contentType: file.mimetype,
        });
      });
    }
    
    // Add folder_path
    if (folderPath) {
      formData.append('folder_path', folderPath);
    }

    return this.storageExplorerService.proxyFormData(
      'POST',
      '/storage/upload/batch',
      user,
      
      formData,
    );
  }

  @ApiOperation({ summary: 'Create a new folder in storage' })
  @Post('storage/folder/create')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.WRITE)
  async createFolder(
    @Body() body: any,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'POST',
      '/storage/folder/create',
      user,
      
      body,
    );
  }

  @ApiOperation({ summary: 'Download a file from storage' })
  @Get('storage/download')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.READ)
  async downloadFile(
    @Query('file_path') filePath: string,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'GET',
      '/storage/download',
      user,
      
      undefined,
      { file_path: filePath },
    );
  }

  @ApiOperation({ summary: 'Get detailed file metadata' })
  @Get('storage/metadata')
  @RequireAllPermissions(PERMISSIONS_GROUPS.STORAGE_EXPLORER.permissions.READ)
  async getFileMetadata(
    @Query('file_path') filePath: string,
    @User() user: RequestUser,
    
  ) {
    return this.storageExplorerService.proxy(
      'GET',
      '/storage/metadata',
      user,
      undefined,
      { file_path: filePath },
    );
  }
}