修正更新逻辑

MRFramework/MRFramework/FoundationManagers/HotUpdate/MRUpdateManager.swift

@@ -116,7 +116,7 @@ open class MRUpdateManager: NSObject {
     }
     
     /// 重置www文件夹。从bundle中覆盖沙盒的www
-    open func resetFilesFolder() {
+    open func resetFilesFolder(_ completion: (() -> Void)? = nil) {
         asyncIfNeeded {
             if let bundleWWW = self.bundleWWWURL {
                 if !self.settings.sandboxSrc.isURLExists(true) {
@@ -127,6 +127,7 @@ open class MRUpdateManager: NSObject {
                 self.sandboxUpdateURL.syncDelete()
                 self.sandboxBackupURL.syncDelete()
             }
+            completion?()
         }
     }
     
@@ -219,7 +220,11 @@ extension MRUpdateManager {
     /// 移除backup文件夹，并且从update文件夹中更新www文件
     /// - Parameter complate: 回调
     public func updateFromLocal(_ complate:((_ error: Error?) -> Void)?) {
-        sandboxBackupURL.syncDelete()
+        if sandboxBackupURL.isURLExists() {
+            sandboxBackupURL.syncDeleteItems(filter: nil)
+        } else {
+            sandboxBackupURL.syncCreate()
+        }
         if let error = sandboxWWWURL.syncMoveItems(to: sandboxBackupURL) {
             complate?(error)
         } else {
@@ -235,9 +240,11 @@ extension MRUpdateManager {
     
     /// 检查传入文件路径的完整性，如果不完整，从bundle中获取www覆盖沙盒中的www
     /// - Parameter file: 需要检查的文件路径
-    public func recoverFromBundleIfFileIncomplete(_ file: URL) {
+    public func recoverFromBundleIfFileIncomplete(_ file: URL, completion: (() -> Void)? = nil) {
         if !checkFilesIntegrity(file) {
-            resetFilesFolder()
+            resetFilesFolder(completion)
+        } else {
+            completion?()
         }
     }
 }
@@ -317,7 +324,7 @@ extension MRUpdateManager {
             var isUpdateError = false
             for i in 0 ..< infos.count {
                 let info = infos[i]
-                let p = Float(i)/Float(infos.count)
+                let p = Float(i)/Float(infos.count-1)
                 
                 let fileURL = updateURL.appendingPathComponent(info.fileName)
                 //Step 2
@@ -326,11 +333,13 @@ extension MRUpdateManager {
                     continue
                 }
                 
+                //先创建必要的文件路径
+                self.createFolder(with: info.fileName, in: updateURL)
+                
                 //Step 3
                 let fileURLInWWW = wwwURL.appendingPathComponent(info.fileName)
                 if fileURLInWWW.isURLExists(),
                     self.isSameHash(with: fileURLInWWW, hash: info.fileHash) {
-                    self.createFolder(with: info.fileName, in: updateURL)
                     
                     let distURL = fileURL.deletingLastPathComponent()
                     if fileURLInWWW.syncCopy(to: distURL) == nil,