add chart code

lib/leave/leave_model.dart

@@ -1,12 +1,39 @@
 import 'package:flutter/material.dart';
 import 'package:intl/intl.dart';
 
+// 假別模型 260110
+class LeaveType {
+  final String id;
+  final String name;
+
+  LeaveType({required this.id, required this.name});
+
+  factory LeaveType.fromJson(Map<String, dynamic> json) {
+    return LeaveType(
+      id: json['leavetype_id'] as String,
+      name: json['leavetype_name'] as String,
+    );
+  }
+}
+
+// 簽核進度模型
+class FlowLog {
+  final String stepName;
+  final String approverName;
+  final String status; // 1:同意, X:駁回, 0:待審
+  final DateTime? time;
+
+  FlowLog({required this.stepName, required this.approverName, required this.status, this.time});
+}
+
 class Leave {
   final String billNo;       // billno (Primary Key)
   final DateTime? billDate;  // billdate
   final String personId;     // personid
   final String agentId;      // agentid (代理人)
+  final String agentName;       /// 關聯顯示
   final String leaveType;    // leavetype (假別：事假、病假等)
+  final String leaveTypeName;   /// 顯示名稱
   final DateTime? startTime; // starttime
   final DateTime? endTime;   // endtime
   final double days;         // days
@@ -19,7 +46,9 @@ class Leave {
     this.billDate,
     required this.personId,
     required this.agentId,
+    this.agentName = '',
     required this.leaveType,
+    this.leaveTypeName = '',
     this.startTime,
     this.endTime,
     this.days = 0,
@@ -34,7 +63,9 @@ class Leave {
       billDate: json['billdate'] != null ? DateTime.tryParse(json['billdate']) : null,
       personId: json['personid'] as String? ?? '',
       agentId: json['agentid'] as String? ?? '',
+      agentName: json['agentname'] ?? '', /// 假設 API 會 Join 姓名
       leaveType: json['leavetype'] as String? ?? '',
+      leaveTypeName: json['leavetype_name'] ?? json['leavetype'] ?? '',
       startTime: json['starttime'] != null ? DateTime.tryParse(json['starttime']) : null,
       endTime: json['endtime'] != null ? DateTime.tryParse(json['endtime']) : null,
       days: double.tryParse(json['days']?.toString() ?? '0') ?? 0,