Added within chat search + updated readme

README.md

@@ -103,6 +103,30 @@ client.connectSlim(null, 20*1000) // use loaded credentials & timeout in 20s
 ```
 See the browser credentials type [here](/src/WAConnection/Constants.ts).
 
+## QR Overriding
+
+If you want to do some custom processing with the QR code used to authenticate, you can override the following method:
+``` ts
+client.onReadyForPhoneAuthentication = ([ref, publicKey, clientID]) => {
+    const str = ref + ',' + publicKey + ',' + clientID // the QR string
+    // Now, use 'str' to display in QR UI or send somewhere
+}
+const user = await client.connect ()
+```
+
+If you need to regenerate the QR, you can also do so using:
+``` ts
+let generateQR: async () => void // call generateQR on some timeout or error
+client.onReadyForPhoneAuthentication = ([ref, publicKey, clientID]) => {
+    generateQR = async () => {
+        ref = await client.generateQRCode () // returns a new ref code to use for QR generation
+        const str = ref + ',' + publicKey + ',' + clientID // the QR string
+        // re-print str as QR or update in UI or send somewhere
+        //QR.generate(str, { small: true })
+    }
+}
+const user = await client.connect ()
+```
 ## Handling Events
 
 Implement the following callbacks in your code:
@@ -298,8 +322,10 @@ setTimeout (() => {
     ```
 - To search through messages
     ``` ts
-    const response = await client.searchMessages ('so cool', 25, 0) // get 25 messages of the first page of results 
+    const response = await client.searchMessages ('so cool', null, 25, 1) // search in all chats
     console.log (`got ${response.messages.length} messages in search`)
+
+    const response2 = await client.searchMessages ('so cool', '1234@c.us', 25, 1) // search in given chat
     ```
 Of course, replace ``` xyz ``` with an actual ID. 
 Append ``` @s.whatsapp.net ``` for individuals & ``` @g.us ``` for groups.

src/WAClient/Messages.ts

@@ -70,10 +70,11 @@ export default class WhatsAppWebMessages extends WhatsAppWebBase {
     /**
      * Search WhatsApp messages with a given text string
      * @param txt the search string
+     * @param inJid the ID of the chat to search in, set to null to search all chats 
      * @param count number of results to return
-     * @param page page number of results
+     * @param page page number of results (starts from 1)
      */
-    async searchMessages(txt: string, count: number, page: number) {
+    async searchMessages(txt: string, inJid: string | null, count: number, page: number) {
         const json = [
             'query',
             { 
@@ -81,7 +82,8 @@ export default class WhatsAppWebMessages extends WhatsAppWebBase {
                 type: 'search',
                 search: txt,
                 count: count.toString(),
-                page: page.toString()
+                page: page.toString(),
+                jid: inJid
             },
             null,
         ]

src/WAClient/Tests.ts

@@ -131,9 +131,12 @@ WAClientTest('Misc', (client) => {
         await client.modifyChat (testJid, ChatModification.unmute, {stamp: mutedate})
     })
     it('should return search results', async () => {
-        const response = await client.searchMessages('Adh', 25, 0)
-        assert.ok (response.messages)
-        assert.ok (response.messages.length >= 0)
+        const jids = [null, testJid]
+        for (let i in jids) {
+            const response = await client.searchMessages('Hello', jids[i], 25, 1)
+            assert.ok (response.messages)
+            assert.ok (response.messages.length >= 0)
+        }
     })
 })
 WAClientTest('Groups', (client) => {

src/WAConnection/Base.ts

@@ -50,9 +50,7 @@ export default class WAConnectionBase {
     protected callbacks = {}
     protected encoder = new Encoder()
     protected decoder = new Decoder()
-    /**
-     * What to do when you need the phone to authenticate the connection (generate QR code by default)
-     */
+    /** What to do when you need the phone to authenticate the connection (generate QR code by default) */
     onReadyForPhoneAuthentication = generateQRCode
     unexpectedDisconnect = (err) => this.close()
     /**

src/WAConnection/BrowserMessageDecoding.ts

@@ -22,7 +22,7 @@ const decrypt = buffer => {
 }
 
 json.messages.forEach ((str, i) => {
-    const buffer = Buffer.from (str, 'hex')
+    const buffer = Buffer.from (str, 'base64')
     try {
         const [tag, json, binaryTags] = decrypt (buffer)
         console.log (