up

app/src/main/java/io/legado/app/help/storage/Restore.kt

@@ -1,6 +1,7 @@
 package io.legado.app.help.storage
 
 import android.content.Context
+import android.net.Uri
 import android.util.Log
 import com.jayway.jsonpath.Configuration
 import com.jayway.jsonpath.JsonPath
@@ -33,6 +34,10 @@ object Restore {
         )
     }
 
+    fun restore(context: Context, uri: Uri) {
+
+    }
+
     fun restore(path: String = Backup.defaultPath) {
         doAsync {
             try {

app/src/main/java/io/legado/app/help/storage/WebDavHelp.kt

@@ -8,9 +8,10 @@ import io.legado.app.lib.webdav.WebDav
 import io.legado.app.lib.webdav.http.HttpAuth
 import io.legado.app.utils.ZipUtils
 import io.legado.app.utils.getPrefString
+import kotlinx.coroutines.Dispatchers.IO
+import kotlinx.coroutines.withContext
 import org.jetbrains.anko.doAsync
 import org.jetbrains.anko.selector
-import org.jetbrains.anko.uiThread
 import java.io.File
 import java.text.SimpleDateFormat
 import java.util.*
@@ -54,20 +55,17 @@ object WebDavHelp {
         return names
     }
 
-    fun showRestoreDialog(context: Context) {
-        doAsync {
-            val names = getWebDavFileNames()
-            if (names.isNotEmpty()) {
-                uiThread {
+    suspend fun showRestoreDialog(context: Context): Boolean {
+        val names = withContext(IO) { getWebDavFileNames() }
+        return if (names.isNotEmpty()) {
             context.selector(title = "选择恢复文件", items = names) { _, index ->
                 if (index in 0 until names.size) {
                     restoreWebDav(names[index])
                 }
             }
-                }
+            true
         } else {
-                Restore.restore()
-            }
+            false
         }
     }
 

app/src/main/java/io/legado/app/ui/config/WebDavConfigFragment.kt

@@ -116,13 +116,7 @@ class WebDavConfigFragment : PreferenceFragmentCompat(),
     override fun onPreferenceTreeClick(preference: Preference?): Boolean {
         when (preference?.key) {
             "web_dav_backup" -> backup()
-            "web_dav_restore" -> PermissionsCompat.Builder(this)
-                .addPermissions(*Permissions.Group.STORAGE)
-                .rationale(R.string.tip_perm_request_storage)
-                .onGranted {
-                    WebDavHelp.showRestoreDialog(requireContext())
-                }
-                .request()
+            "web_dav_restore" -> restore()
             "import_old" -> importOldData()
         }
         return super.onPreferenceTreeClick(preference)
@@ -157,6 +151,39 @@ class WebDavConfigFragment : PreferenceFragmentCompat(),
         }
     }
 
+    fun restore() {
+        launch {
+            if (!WebDavHelp.showRestoreDialog(requireContext())) {
+                val backupPath = getPrefString(PreferKey.backupPath)
+                if (backupPath?.isEmpty() == true) {
+                    selectRestoreFolder()
+                } else {
+                    val uri = Uri.parse(backupPath)
+                    val doc = DocumentFile.fromTreeUri(requireContext(), uri)
+                    if (doc?.canWrite() == true) {
+                        Restore.restore(requireContext(), uri)
+                    } else {
+                        selectBackupFolder()
+                    }
+                }
+            }
+        }
+    }
+
+    private fun selectRestoreFolder() {
+        try {
+            val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
+            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+            startActivityForResult(intent, restoreSelectRequestCode)
+        } catch (e: java.lang.Exception) {
+            PermissionsCompat.Builder(this)
+                .addPermissions(*Permissions.Group.STORAGE)
+                .rationale(R.string.tip_perm_request_storage)
+                .onGranted { Restore.restore(Backup.legadoPath) }
+                .request()
+        }
+    }
+
     private fun importOldData() {
         try {
             val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
@@ -270,6 +297,16 @@ class WebDavConfigFragment : PreferenceFragmentCompat(),
                     Backup.backup(requireContext(), uri)
                 }
             }
+            restoreSelectRequestCode -> if (resultCode == RESULT_OK) {
+                data?.data?.let { uri ->
+                    requireContext().contentResolver.takePersistableUriPermission(
+                        uri,
+                        Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
+                    )
+                    putPrefString(PreferKey.backupPath, uri.toString())
+                    Restore.restore(requireContext(), uri)
+                }
+            }
         }
     }
 }

app/src/main/java/io/legado/app/ui/main/MainActivity.kt

@@ -172,15 +172,22 @@ class MainActivity : VMBaseActivity<MainViewModel>(R.layout.activity_main),
     }
 
     fun restore() {
-        PermissionsCompat.Builder(this)
-            .addPermissions(*Permissions.Group.STORAGE)
-            .rationale(R.string.tip_perm_request_storage)
-            .onGranted { WebDavHelp.showRestoreDialog(this) }
-            .request()
+        launch {
+            if (!WebDavHelp.showRestoreDialog(this@MainActivity)) {
+                val backupPath = getPrefString(PreferKey.backupPath)
+                if (backupPath?.isEmpty() == true) {
+                    selectRestoreFolder()
+                } else {
+                    val uri = Uri.parse(backupPath)
+                    val doc = DocumentFile.fromTreeUri(this@MainActivity, uri)
+                    if (doc?.canWrite() == true) {
+                        Restore.restore(this@MainActivity, uri)
+                    } else {
+                        selectBackupFolder()
+                    }
+                }
+            }
         }
-
-    fun restore(uri: Uri) {
-
     }
 
     private fun selectBackupFolder() {
@@ -206,7 +213,7 @@ class MainActivity : VMBaseActivity<MainViewModel>(R.layout.activity_main),
             PermissionsCompat.Builder(this)
                 .addPermissions(*Permissions.Group.STORAGE)
                 .rationale(R.string.tip_perm_request_storage)
-                .onGranted { Restore.restore() }
+                .onGranted { Restore.restore(Backup.legadoPath) }
                 .request()
         }
     }
@@ -231,6 +238,7 @@ class MainActivity : VMBaseActivity<MainViewModel>(R.layout.activity_main),
                         Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
                     )
                     putPrefString(PreferKey.backupPath, uri.toString())
+                    Restore.restore(this, uri)
                 }
             }
         }