75 lines
2.4 KiB
Dart
75 lines
2.4 KiB
Dart
import 'package:dio/dio.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import '../core/network/api_exception.dart';
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import '../core/network/dio_client.dart';
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final photoApiProvider = Provider<PhotoApi>((ref) => PhotoApi(ref.watch(dioProvider)));
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/// 照片存档接口。
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///
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/// App 拍完照把**原图**传上来；水印是本地合成的，和这里无关。
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/// 上传是「锦上添花」—— 失败了不该影响用户继续编辑和保存照片，
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/// 所以调用方要自己吞掉异常并给个「重试」入口。
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class PhotoApi {
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PhotoApi(this._dio);
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final Dio _dio;
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/// 上传一张照片，返回后端记录 id
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Future<int?> upload({
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required String filePath,
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double? latitude,
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double? longitude,
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String? address,
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String? weather,
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String? remark,
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DateTime? takenTime,
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}) async {
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try {
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final form = FormData.fromMap({
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'file': await MultipartFile.fromFile(
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filePath,
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filename: _fileName(filePath),
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),
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'latitude': ?latitude,
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'longitude': ?longitude,
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if (address != null && address.isNotEmpty) 'address': address,
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if (weather != null && weather.isNotEmpty) 'weather': weather,
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if (remark != null && remark.isNotEmpty) 'remark': remark,
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if (takenTime != null) 'takenTime': _formatTime(takenTime),
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});
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final res = await _dio.post<dynamic>(
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'/photos',
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data: form,
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// 原图可能有好几 MB，移动网络下给宽一点
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options: Options(receiveTimeout: const Duration(seconds: 60)),
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);
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final data = res.data;
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if (data is Map) {
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final id = data['id'];
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if (id is int) return id;
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}
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return null;
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} on DioException catch (e) {
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final err = e.error;
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throw err is ApiException ? err : ApiException(-1, '照片上传失败');
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}
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}
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/// 从路径里取个带扩展名的文件名，后端靠它判断文件类型
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static String _fileName(String path) {
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final normalized = path.replaceAll('\\', '/');
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final name = normalized.substring(normalized.lastIndexOf('/') + 1);
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return name.isEmpty ? 'photo.jpg' : name;
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}
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static String _formatTime(DateTime time) {
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String two(int n) => n.toString().padLeft(2, '0');
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return '${time.year}-${two(time.month)}-${two(time.day)} '
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'${two(time.hour)}:${two(time.minute)}:${two(time.second)}';
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}
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}
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