local history

lib/foundation/history.dart

@@ -0,0 +1,95 @@
+import 'package:pixes/foundation/app.dart';
+import 'package:sqlite3/sqlite3.dart';
+import 'package:pixes/network/models.dart';
+
+class IllustHistory {
+  final int id;
+  final String imgPath;
+  final DateTime time;
+  final int imageCount;
+  final bool isR18;
+  final bool isR18G;
+  final bool isAi;
+  final bool isGif;
+  final int width;
+  final int height;
+
+  IllustHistory(this.id, this.imgPath, this.time, this.imageCount, this.isR18,
+      this.isR18G, this.isAi, this.isGif, this.width, this.height);
+}
+
+class HistoryManager {
+  static HistoryManager? instance;
+
+  factory HistoryManager() => instance ??= HistoryManager._create();
+
+  HistoryManager._create();
+
+  late Database _db;
+
+  init() {
+    _db = sqlite3.open("${App.dataPath}/history.db");
+    _db.execute('''
+      create table if not exists history (
+        id integer primary key not null,
+        imgPath text not null,
+        time integer not null,
+        imageCount integer not null,
+        isR18 integer not null,
+        isR18g integer not null,
+        isAi integer not null,
+        isGif integer not null,
+        width integer not null,
+        height integer not null
+      )
+    ''');
+  }
+
+  void addHistory(Illust illust) {
+    var time = DateTime.now();
+    _db.execute('''
+      insert or replace into history (id, imgPath, time, imageCount, isR18, isR18g, isAi, isGif, width, height)
+      values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+    ''', [
+      illust.id,
+      illust.images.first.medium,
+      time.millisecondsSinceEpoch,
+      illust.pageCount,
+      illust.isR18 ? 1 : 0,
+      illust.isR18G ? 1 : 0,
+      illust.isAi ? 1 : 0,
+      illust.isUgoira ? 1 : 0,
+      illust.width,
+      illust.height
+    ]);
+  }
+
+  List<IllustHistory> getHistories(int page) {
+    var rows = _db.select('''
+      select * from history
+      limit 20 offset ?
+    ''', [(page - 1) * 20]);
+    List<IllustHistory> res = [];
+    for (var row in rows) {
+      res.add(IllustHistory(
+          row['id'],
+          row['imgPath'],
+          DateTime.fromMillisecondsSinceEpoch(row['time']),
+          row['imageCount'],
+          row['isR18'] == 1,
+          row['isR18g'] == 1,
+          row['isAi'] == 1,
+          row['isGif'] == 1,
+          row['width'],
+          row['height']));
+    }
+    return res;
+  }
+
+  int get length {
+    var rows = _db.select('''
+      select count(*) from history
+    ''');
+    return rows.first.values.first! as int;
+  }
+}