add structure

lib/model/log_model.dart

@@ -0,0 +1,59 @@
+import 'dart:async';
+
+import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:fcs/vo/document_log.dart';
+import 'package:fcs/vo/log.dart';
+
+import 'base_model.dart';
+import 'constants.dart';
+
+class LogModel extends BaseModel {
+  List<Log> logs = [];
+  List<DocLog> docLogs = [];
+
+  void initUser(user) {
+    super.initUser(user);
+    _loadLogs();
+  }
+
+
+  @override
+  logout() async {
+    logs = [];
+    docLogs=[];
+  }
+  Future<void> _loadLogs() async {
+    Stream<QuerySnapshot> snapshots = Firestore.instance
+        .collection(
+            "/$biz_collection/${setting.okEnergyId}/$user_collection/${user.docID}/$log_collection")
+        .orderBy("active_time", descending: true)
+        .limit(30)
+        .snapshots();
+
+    snapshots.listen((snaps) async {
+      logs = snaps.documents
+          .map((documentSnapshot) =>
+              Log.fromMap(documentSnapshot.data, documentSnapshot.documentID))
+          .toList();
+      notifyListeners();
+    });
+  }
+
+  Future<void> loadDocLogs(String docID) async {
+    Stream<QuerySnapshot> snapshots = Firestore.instance
+        .collection("/$biz_collection/${setting.okEnergyId}/$log_collection")
+        .where('doc_id', isEqualTo: docID)
+        .orderBy('date', descending: true)
+        .limit(30)
+        .snapshots();
+
+    snapshots.listen((snaps) async {
+      docLogs.clear();
+      docLogs = snaps.documents
+          .map((documentSnapshot) => DocLog.fromMap(
+              documentSnapshot.data, documentSnapshot.documentID))
+          .toList();
+      notifyListeners();
+    });
+  }
+}