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TUIKit/TUIRoomKit/Source/Common/Utils/FetchRoomId.swift

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+//
+//  FetchRoomId.swift
+//  TUIRoomKit
+//
+//  Created by janejntang on 2024/1/29.
+//
+
+import Foundation
+import TUICore
+
+class FetchRoomId {
+    class func getRoomId(onGetRoomId: @escaping (String)->()) {
+        let roomId = getRandomRoomId(numberOfDigits: 6)
+        checkIfRoomIdExists(roomId: roomId) {
+            getRoomId(onGetRoomId: onGetRoomId)
+        } onNotExist: {
+            onGetRoomId(roomId)
+        }
+    }
+    
+    class func getRandomRoomId(numberOfDigits: Int) -> String {
+        var numberOfDigit = numberOfDigits > 0 ? numberOfDigits : 1
+        numberOfDigit = numberOfDigit < 10 ? numberOfDigit : 9
+        let minNumber = Int(truncating: NSDecimalNumber(decimal: pow(10, numberOfDigit - 1)))
+        let maxNumber = Int(truncating: NSDecimalNumber(decimal: pow(10, numberOfDigit))) - 1
+        let randomNumber = arc4random_uniform(UInt32(maxNumber - minNumber)) + UInt32(minNumber)
+        return String(randomNumber)
+    }
+    
+    class func checkIfRoomIdExists(roomId: String, onExist: @escaping () -> (), onNotExist: @escaping () -> ()) {
+        V2TIMManager.sharedInstance().getGroupsInfo([roomId]) { infoResult in
+            if checkIfRoomIdExistsWithResultCode(infoResult?.first?.resultCode) {
+                onExist()
+            } else {
+                onNotExist()
+            }
+        } fail: { code, message in
+            onNotExist()
+        }
+    }
+    
+    private class func checkIfRoomIdExistsWithResultCode(_ resultCode: Int32?) -> Bool {
+        let kIMCodeGroupSuccess = 0
+        let kIMCodeGroupInsufficientOperationAuthority = 10007
+        if let resultCode = resultCode {
+            return resultCode == kIMCodeGroupSuccess || resultCode == kIMCodeGroupInsufficientOperationAuthority
+        } else {
+            return false
+        }
+    }
+}
+
+