Add kanji page

lib/screens/home.dart

@@ -1,81 +1,37 @@
-import 'dart:convert';
-import 'dart:io';
-
-import 'package:tangocard_reader/models/yokutango_entry.dart';
-import 'package:tangocard_reader/screens/error.dart';
-import 'package:tangocard_reader/screens/loading.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter/services.dart';
+import 'package:tangocard_reader/service/tangocard_files.dart';
 
-class Home extends StatelessWidget {
+import 'pages/tango_set_list.dart';
+
+class Home extends StatefulWidget {
   const Home({Key? key}) : super(key: key);
 
   @override
-  Widget build(BuildContext context) {
-    return Scaffold(
+  State<Home> createState() => _HomeState();
+}
+
+class _HomeState extends State<Home> {
+  int page = 0;
+
+  final _pages = [
+    TangoSetList(files: tangocardFilePaths, route: '/list/tango',),
+    TangoSetList(files: kanjicardFilePaths, route: '/list/kanji',),
+  ];
+
+  @override
+  Widget build(BuildContext context) => Scaffold(
         appBar: AppBar(
           title: const Text("よく単語"),
           centerTitle: true,
         ),
-        body: const TangocardList());
-  }
-}
-
-class TangocardList extends StatelessWidget {
-  const TangocardList({Key? key}) : super(key: key);
-
-  Future<Map<File, List<YokutangoEntry>>> get tangocardFilePaths => rootBundle
-      .loadString('AssetManifest.json')
-      .then(
-        (json) => jsonDecode(json)
-            .keys
-            .where((String key) =>
-                key.contains('yokutango/json/') && key.contains('.json'))
-            .toList(),
-      )
-      .then(
-        (l) async => Map.fromIterables(
-          l.map<File>((f) => File(f)),
-          await Future.wait<List<YokutangoEntry>>(
-            l
-                .map<Future<List<YokutangoEntry>>>(
-                  (String t) => rootBundle
-                      .loadString(t)
-                      .then<List<YokutangoEntry>>((s) => jsonDecode(s)
-                          .map<YokutangoEntry>(
-                              (e) => YokutangoEntry.fromJson(e))
-                          .toList()),
-                )
-          ),
+        body: _pages[page],
+        bottomNavigationBar: BottomNavigationBar(
+          onTap: (int index) => setState(() => page = index),
+          currentIndex: page,
+          items: const [
+            BottomNavigationBarItem(label: 'Tango', icon: Icon(Icons.style)),
+            BottomNavigationBarItem(label: 'Kanji', icon: Text('漢字')),
+          ],
         ),
       );
-
-  @override
-  Widget build(BuildContext context) {
-    return FutureBuilder(
-      future: tangocardFilePaths,
-      builder: (context, snapshot) {
-        if (snapshot.hasError) {
-          debugPrint(snapshot.error.toString());
-          return const ErrorScreen();
-        } else if (!snapshot.hasData) {
-          return const LoadingScreen();
-        }
-
-        return ListView(
-          children: (snapshot.data as Map<File, List<YokutangoEntry>>)
-              .entries
-              .map(
-                (e) => ListTile(
-                  title: Text(
-                      "${e.key.uri.pathSegments.last} - ${e.value.length} cards"),
-                  onTap: () => Navigator.pushNamed(context, '/tangolist',
-                      arguments: e.key),
-                ),
-              )
-              .toList(),
-        );
-      },
-    );
-  }
 }