package com.talentcard.server.upload;

import com.talentcard.server.common.ApiResponse;
import com.talentcard.server.common.BusinessException;
import com.talentcard.server.common.ErrorCode;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import java.nio.file.*;
import java.util.UUID;

@RestController
@RequestMapping("/api/admin/uploads")
public class AdminUploadController {

	private final ImageUploadService imageUploadService;

	public AdminUploadController(ImageUploadService imageUploadService) {
		this.imageUploadService = imageUploadService;
	}

	@PostMapping("/images")
	@ResponseStatus(HttpStatus.CREATED)
	public ApiResponse<ImageUploadResult> uploadImage(@RequestParam("file") MultipartFile file) {
		return ApiResponse.success(imageUploadService.upload(file));
	}

	@PostMapping("/pdfs")
	@ResponseStatus(HttpStatus.CREATED)
	public ApiResponse<ImageUploadResult> uploadPdf(@RequestParam("file") MultipartFile file) {
		return ApiResponse.success(imageUploadService.uploadPdf(file));
	}

	@PostMapping("/videos")
	@ResponseStatus(HttpStatus.CREATED)
	public ApiResponse<ImageUploadResult> uploadVideo(@RequestParam("file") MultipartFile file) throws java.io.IOException {
		if (file == null || file.isEmpty() || file.getSize() > 100L * 1024 * 1024) throw new BusinessException(ErrorCode.BAD_REQUEST, "请选择不超过100MB的视频文件");
		String type = file.getContentType() == null ? "" : file.getContentType().toLowerCase();
		if (!type.equals("video/mp4")) throw new BusinessException(ErrorCode.BAD_REQUEST, "仅支持 MP4 视频");
		Path directory = Path.of("uploads").toAbsolutePath().normalize();
		Files.createDirectories(directory);
		String filename = UUID.randomUUID() + ".mp4";
		Files.copy(file.getInputStream(), directory.resolve(filename), StandardCopyOption.REPLACE_EXISTING);
		return ApiResponse.success(new ImageUploadResult("/uploads/" + filename));
	}
}