feat: link previews

After this commit, previews for links will be enabled by default. To disable it, use linkPreview: false as an option when sending the message.

close #98

src/Client.js

@@ -381,6 +381,7 @@ class Client extends EventEmitter {
      */
     async sendMessage(chatId, content, options = {}) {
         let internalOptions = {
+            linkPreview: options.linkPreview === false ? undefined : true,
             caption: options.caption,
             quotedMessageId: options.quotedMessageId,
             mentionedJidList: Array.isArray(options.mentions) ? options.mentions.map(contact => contact.id._serialized) : []

src/util/Injected.js

@@ -24,7 +24,7 @@ exports.ExposeStore = (moduleRaidStr) => {
     window.Store.Cmd = window.mR.findModule('Cmd')[0].default;
     window.Store.MediaTypes = window.mR.findModule('msgToMediaType')[0];
     window.Store.UserConstructor = window.mR.findModule((module) => (module.default && module.default.prototype && module.default.prototype.isServer && module.default.prototype.isUser) ? module.default : null)[0].default;
-
+    window.Store.Validators = window.mR.findModule('findLinks')[0];
 };
 
 exports.LoadUtils = () => {
@@ -76,6 +76,17 @@ exports.LoadUtils = () => {
             delete options.location;
         }
 
+        if (options.linkPreview) {
+            delete options.linkPreview;
+            const link = window.Store.Validators.findLink(content);
+            if (link) {
+                const preview = await window.Store.Wap.queryLinkPreview(link.url);
+                if (!preview.status) {
+                    options = { ...options, ...preview};
+                }
+            }
+        }
+
         const newMsgId = new window.Store.MsgKey({
             from: window.Store.Conn.me,
             to: chat.id,