generated from dellevin/template
94 lines
2.9 KiB
Dart
94 lines
2.9 KiB
Dart
import 'dart:convert';
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import 'package:flutter/foundation.dart';
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import 'package:http/http.dart' as http;
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import 'package:package_info_plus/package_info_plus.dart';
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import 'server_config.dart';
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/// 更新日志数据模型
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class ChangelogItem {
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final String version;
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final String date;
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final List<String> features;
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ChangelogItem({
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required this.version,
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required this.date,
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required this.features,
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});
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factory ChangelogItem.fromJson(Map<String, dynamic> json) {
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return ChangelogItem(
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version: json['version'] ?? '',
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date: json['date'] ?? '',
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features: (json['features'] as List<dynamic>?)
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?.map((e) => e.toString())
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.toList() ??
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[],
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);
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}
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}
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/// 版本更新检查服务
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class ChangelogService {
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static final _apiUrl = '${ServerConfig.apiBase}/changelog';
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/// 获取更新日志列表
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static Future<List<ChangelogItem>> fetchChangelog() async {
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try {
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final resp = await http
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.get(Uri.parse(_apiUrl))
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.timeout(const Duration(seconds: 5));
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if (resp.statusCode == 200) {
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final data = jsonDecode(resp.body);
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final items = (data['items'] as List<dynamic>?)
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?.map((e) => ChangelogItem.fromJson(e as Map<String, dynamic>))
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.toList() ??
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[];
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return items;
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}
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} catch (_) {}
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return [];
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}
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/// 获取最新版本号
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static Future<String?> fetchLatestVersion() async {
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final items = await fetchChangelog();
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if (items.isNotEmpty) return items.first.version;
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return null;
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}
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/// 比较两版本号，a > b 则返回 1，a < b 返回 -1，相等返回 0
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/// v0.1.9 → 当成数字 "0.19" = 0.19，0.1.88 → "0.188" = 0.188，所以 0.19 > 0.188
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/// 实现方式：去掉 v，把第一个点后的数字拼接再转 double 比较
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static int compareVersion(String a, String b) {
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double toNum(String v) {
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final s = v.replaceFirst('v', '');
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final dot = s.indexOf('.');
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if (dot == -1) return double.tryParse(s) ?? 0;
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// "0.1.9" → "0." + "19" = "0.19"；"0.1.88" → "0." + "188" = "0.188"
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final major = s.substring(0, dot + 1); // "0."
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final rest = s.substring(dot + 1).replaceAll('.', ''); // "19" 或 "188"
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return double.tryParse('$major$rest') ?? 0;
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}
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final aVal = toNum(a);
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final bVal = toNum(b);
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debugPrint('[Update] compare: "$a"→$aVal vs "$b"→$bVal');
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if (aVal > bVal) return 1;
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if (aVal < bVal) return -1;
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return 0;
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}
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/// 检查是否有新版本（远程 > 本地）
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static Future<bool> hasUpdate() async {
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final latest = await fetchLatestVersion();
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if (latest == null) return false;
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final info = await PackageInfo.fromPlatform();
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final local = 'v${info.version}';
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debugPrint('[Update] 远程: $latest, 本地: $local');
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final result = compareVersion(latest, local) > 0;
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debugPrint('[Update] 远程 > 本地? $result');
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return result;
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}
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}
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