Snippet support import/export.

lib/view/page/snippet/edit.dart

@@ -35,7 +35,7 @@ class _SnippetEditPageState extends State<SnippetEditPage>
         widget.snippet != null
             ? IconButton(
                 onPressed: () {
-                  _provider.delInfo(widget.snippet!);
+                  _provider.del(widget.snippet!);
                   Navigator.of(context).pop();
                 },
                 icon: const Icon(Icons.delete))
@@ -71,9 +71,9 @@ class _SnippetEditPageState extends State<SnippetEditPage>
           }
           final snippet = Snippet(name, script);
           if (widget.snippet != null) {
-            _provider.updateInfo(widget.snippet!, snippet);
+            _provider.update(widget.snippet!, snippet);
           } else {
-            _provider.addInfo(snippet);
+            _provider.add(snippet);
           }
           Navigator.of(context).pop();
         },

lib/view/page/snippet/list.dart

@@ -1,3 +1,4 @@
+import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:toolbox/core/route.dart';
@@ -23,12 +24,20 @@ class SnippetListPage extends StatefulWidget {
 class _SnippetListPageState extends State<SnippetListPage> {
   late ServerPrivateInfo _selectedIndex;
 
+  final _importFieldController = TextEditingController();
+  final _exportFieldController = TextEditingController();
+
   final _textStyle = TextStyle(color: primaryColor);
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
         title: const Text('Snippet List'),
+        actions: [
+          IconButton(
+              onPressed: () => _showImportExport(),
+              icon: const Icon(Icons.import_export)),
+        ],
       ),
       body: _buildBody(),
       floatingActionButton: FloatingActionButton(
@@ -39,6 +48,97 @@ class _SnippetListPageState extends State<SnippetListPage> {
     );
   }
 
+  Future<void> _showImportExport() async {
+    await showRoundDialog(
+        context,
+        'Choose',
+        Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            ListTile(
+              title: const Text('Import'),
+              leading: const Icon(Icons.download),
+              onTap: () => _showImportDialog(),
+            ),
+            ListTile(
+              title: const Text('Export'),
+              leading: const Icon(Icons.file_upload),
+              onTap: () => _showExportDialog(),
+            ),
+          ],
+        ),
+        []);
+  }
+
+  Future<void> _showExportDialog() async {
+    Navigator.of(context).pop();
+    _exportFieldController.text = locator<SnippetProvider>().export;
+    await showRoundDialog(
+        context,
+        'Export',
+        TextField(
+          decoration: const InputDecoration(
+            labelText: 'JSON',
+          ),
+          maxLines: 3,
+          controller: _exportFieldController,
+        ),
+        [
+          TextButton(
+            child: const Text('OK'),
+            onPressed: () => Navigator.pop(context),
+          ),
+        ]);
+  }
+
+  Future<void> _showImportDialog() async {
+    Navigator.of(context).pop();
+    await showRoundDialog(
+        context,
+        'Import',
+        TextField(
+          decoration: const InputDecoration(
+            labelText: 'Url or JSON',
+          ),
+          maxLines: 2,
+          controller: _importFieldController,
+        ),
+        [
+          TextButton(
+              onPressed: () => Navigator.of(context).pop(),
+              child: const Text('Cancel')),
+          TextButton(
+            onPressed: () async =>
+                await _import(_importFieldController.text.trim()),
+            child: const Text('GO'),
+          )
+        ]);
+  }
+
+  Future<void> _import(String text) async {
+    if (text.isEmpty) {
+      showSnackBar(context, const Text('field can not be empty'));
+      return;
+    }
+    final snippetProvider = locator<SnippetProvider>();
+    if (text.startsWith('http')) {
+      final resp = await Dio().get(text);
+      if (resp.statusCode != 200) {
+        showSnackBar(
+            context, Text('request failed, status code: ${resp.statusCode}'));
+        return;
+      }
+      for (final snippet in getSnippetList(resp.data)) {
+        snippetProvider.add(snippet);
+      }
+    } else {
+      for (final snippet in getSnippetList(text)) {
+        snippetProvider.add(snippet);
+      }
+    }
+    Navigator.of(context).pop();
+  }
+
   Widget _buildBody() {
     return Consumer<SnippetProvider>(
       builder: (_, key, __) {