init

2025-06-30 16:24:20 +08:00
commit 68de5eb048
454 changed files with 56921 additions and 0 deletions
@@ -0,0 +1,8 @@
+/// Extensions on [Uri]
+extension UriX on Uri {
+  /// Return the URI adding the http scheme if it is missing
+  Uri get withScheme {
+    if (hasScheme) return this;
+    return Uri.parse('http://${toString()}');
+  }
+}
@@ -0,0 +1,90 @@
+import 'dart:convert';
+import 'package:flutter/material.dart';
+import 'package:link_preview_generator_for_us/link_preview_generator.dart';
+import 'package:tencent_chat_i18n_tool/tencent_chat_i18n_tool.dart';
+import 'package:tencent_cloud_chat_sdk/models/v2_tim_message.dart'
+    if (dart.library.html) 'package:tencent_cloud_chat_sdk/web/compatible_models/v2_tim_message.dart';
+import 'package:tencent_cloud_chat_sdk/tencent_im_sdk_plugin.dart';
+import 'package:tencent_cloud_chat_uikit/tencent_cloud_chat_uikit.dart';
+import 'package:tencent_cloud_chat_uikit/ui/widgets/link_preview/common/extensions.dart';
+import 'package:tencent_cloud_chat_uikit/ui/widgets/link_preview/link_preview_entry.dart';
+import 'package:url_launcher/url_launcher.dart';
+
+class LinkUtils {
+  static RegExp urlReg = RegExp(
+      r"([hH][tT]{2}[pP]:\/\/|[hH][tT]{2}[pP][sS]:\/\/|[wW]{3}.|[wW][aA][pP].|[fF][tT][pP].|[fF][iI][lL][eE].)[-A-Za-z0-9+&@#/%?=~_|!:,.;]+[-A-Za-z0-9+&@#/%=~_|]");
+
+  /// Get all the URL from a text message
+  static List<String> getURLMatches(String textMessage) {
+    final matches = urlReg.allMatches(textMessage).toList();
+
+    List<String> urlMatches = [];
+
+    for (Match m in matches) {
+      String match = m.group(0) ?? "";
+      urlMatches.add(match);
+    }
+
+    return urlMatches;
+  }
+
+  /// Launch URL
+  static Future<void> launchURL(BuildContext context, String url) async {
+    try {
+      await launchUrl(
+        Uri.parse(url).withScheme,
+        mode: LaunchMode.externalApplication,
+      );
+    } catch (e) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text(TIM_t("无法打开URL"))), // Cannot launch the url
+      );
+    }
+  }
+
+  /// Get color
+  static Color hexToColor(String hexString) {
+    return Color(int.parse(hexString, radix: 16)).withAlpha(255);
+  }
+
+  /// Get the URL preview information
+  static Future<List<LocalCustomDataModel>> getURLPreview(List<String> urlMatches) async {
+    // Request for preview information for all URL links synchronously
+    final List<LocalCustomDataModel> urlPreview = await Future.wait(urlMatches.map((e) async {
+      String url = e;
+      if (!e.contains("http")) {
+        url = 'http://$e';
+      }
+      final WebInfo info = await LinkPreviewForUs.scrapeFromURL(url);
+
+      return LocalCustomDataModel(url: e, title: info.title, image: info.image, description: info.description);
+    }));
+
+    return urlPreview;
+  }
+
+  /// save the link info to local and call updating the message on UI, only works with [onUpdateMessage]
+  static Future<void> saveToLocalAndUpdate(
+      V2TimMessage message, LocalCustomDataModel previewItem, ValueChanged<V2TimMessage> onUpdateMessage) async {
+    if (message.msgID != null) {
+      String saveInfo = LinkPreviewEntry.linkInfoToString(previewItem);
+      final currentInfo = message.localCustomData;
+      if (currentInfo != null && currentInfo.isNotEmpty) {
+        final Map<String, dynamic> data = json.decode(currentInfo);
+        data['url'] = previewItem.url;
+        data['image'] = previewItem.image;
+        data['title'] = previewItem.title;
+        data['description'] = previewItem.description;
+        saveInfo = json.encode(data);
+      }
+      message.localCustomData = saveInfo;
+      if (saveInfo != currentInfo) {
+        final result = await TencentImSDKPlugin.v2TIMManager.v2TIMMessageManager
+            .setLocalCustomData(msgID: message.msgID!, localCustomData: saveInfo);
+        if (result.code == 0) {
+          onUpdateMessage(message);
+        }
+      }
+    }
+  }
+}