125 lines
3.9 KiB
Dart
125 lines
3.9 KiB
Dart
import 'json_util.dart';
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import 'watermark.dart';
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/// 一张已上传的照片。
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///
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/// ⚠️ [url] 指向的是**未加水印的原图** —— 服务器只存原图，水印一直是
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/// App 本地合成的。所以「重新打水印」（换颜色、换位置、补备注）随时可行。
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class PhotoItem {
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const PhotoItem({
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required this.id,
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required this.url,
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required this.thumbUrl,
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required this.takenAt,
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required this.address,
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required this.weather,
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required this.remark,
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required this.latitude,
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required this.longitude,
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});
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final int id;
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/// 原图地址（相对路径，如 `/uploads/photo/2026/09/28/xxx.jpg`）
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final String url;
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/// 缩略图地址。为 null 表示后端没生成出来，客户端只能回退用原图。
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final String? thumbUrl;
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/// 拍摄时间，已格式化；后端两个时间字段取到哪个用哪个
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final String takenAt;
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final String address;
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/// 「晴 25℃」这种拼好的天气文本
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final String weather;
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final String remark;
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final double? latitude;
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final double? longitude;
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factory PhotoItem.fromJson(Map<String, dynamic> json) {
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// 拍摄时间是客户端传的，可能为空（格式没对上时后端会存 null），
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// 那就退回记录创建时间 —— 至少能显示个日期
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final taken = formatDateTime(json['takenTime']);
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final created = formatDateTime(json['createTime']);
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return PhotoItem(
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id: asInt(json['id']),
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url: asString(json['url']),
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thumbUrl: asString(json['thumbUrl']).isEmpty
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? null
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: asString(json['thumbUrl']),
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takenAt: taken.isNotEmpty ? taken : created,
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address: asString(json['address']),
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weather: asString(json['weather']),
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remark: asString(json['remark']),
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latitude: asNullableDouble(json['latitude']),
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longitude: asNullableDouble(json['longitude']),
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);
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}
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/// 还原成水印数据，「重新打水印」时用。
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///
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/// 关键点是**复用这张照片当时的地址和天气**，而不是拿当前位置 ——
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/// 不然给三年前的照片重新加个水印，地点会变成「你现在站的地方」。
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WatermarkData toWatermarkData() {
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final split = splitWeatherText(weather);
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return WatermarkData(
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time: parsePhotoTime(takenAt),
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address: address,
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weather: split.weather,
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temperature: split.temperature,
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remark: remark,
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);
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}
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}
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/// 把后端存的 `yyyy-MM-dd HH:mm` 解析回 DateTime；解析不了就用当前时间
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DateTime parsePhotoTime(String value) {
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final normalized = value.trim().replaceFirst(' ', 'T');
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return DateTime.tryParse(normalized) ?? DateTime.now();
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}
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/// 拆开后端存的天气文本（「晴 25℃」→ weather=晴, temperature=25℃）。
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///
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/// 存的时候是一个字段（上传时客户端就是这么拼的），所以这里拆回来。
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/// 两种情况都要兜住：只有天气没有温度（「晴」）、只有温度没有天气（「25℃」）。
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({String weather, String temperature}) splitWeatherText(String combined) {
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final text = combined.trim();
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if (text.isEmpty) return (weather: '', temperature: '');
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final parts = text.split(' ');
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if (parts.last.endsWith('℃')) {
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return (
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weather: parts.sublist(0, parts.length - 1).join(' '),
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temperature: parts.last,
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);
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}
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return (weather: text, temperature: '');
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}
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/// 照片分页
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class PhotoPage {
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const PhotoPage({
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required this.items,
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required this.total,
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required this.hasMore,
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});
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final List<PhotoItem> items;
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final int total;
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final bool hasMore;
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static const empty = PhotoPage(items: [], total: 0, hasMore: false);
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factory PhotoPage.fromJson(Map<String, dynamic> json) {
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return PhotoPage(
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items: asMapList(json['list']).map(PhotoItem.fromJson).toList(),
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total: asInt(json['total']),
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hasMore: json['hasMore'] == true,
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);
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}
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}
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