tboss_oa_module/lib/features/vehicle/vehicle_detail_page.dart

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../core/theme/app_colors.dart';
import '../../core/utils/date_utils.dart' as du;
import '../../core/utils/responsive.dart';
import '../../shared/models/approval_status.dart';
import '../../shared/widgets/form_section.dart';
import '../../shared/widgets/form_field_row.dart';
import '../../shared/widgets/status_tag.dart';
import 'vehicle_model.dart';

final vehicleDetailProvider = FutureProvider.autoDispose.family<VehicleModel, String>((ref, id) async {
  await Future.delayed(const Duration(milliseconds: 300));
  return VehicleModel(
    id: id,
    applicationNo: 'VH202605001',
    applicantId: 'u-001',
    applicantName: '张三',
    deptId: 'dept-001',
    deptName: '市场部',
    vehicleType: '轿车',
    purpose: '客户拜访',
    startTime: DateTime(2026, 5, 22, 8, 0),
    endTime: DateTime(2026, 5, 22, 18, 0),
    origin: '公司总部',
    destination: '深圳分公司',
    passengerCount: 3,
    driver: '刘师傅',
    licensePlate: '京A·88888',
    estimatedMileage: 120.0,
    estimatedCost: 500.0,
    reason: '拜访重要客户，需前往深圳',
    status: 'pending',
    createTime: DateTime(2026, 5, 20),
    updateTime: DateTime(2026, 5, 20),
    approvalRecords: [
      ApprovalRecord(
        id: 'ar-vh-001',
        bizId: id,
        bizType: 'vehicle',
        approverId: 'u-mgr',
        approverName: '李四',
        approvalLevel: 1,
        action: 'pending',
        opinion: '',
        approvalTime: DateTime(2026, 5, 20),
      ),
    ],
  );
});

class VehicleDetailPage extends ConsumerWidget {
  final String id;
  const VehicleDetailPage({super.key, required this.id});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final detailAsync = ref.watch(vehicleDetailProvider(id));
    final r = ResponsiveHelper.of(context);

    return Scaffold(
      appBar: AppBar(title: const Text('用车详情')),
      body: detailAsync.when(
        loading: () => const Center(child: CircularProgressIndicator()),
        error: (_, __) => const Center(child: Text('加载失败')),
        data: (v) => Align(alignment: Alignment.topCenter,
          child: ConstrainedBox(
            constraints: BoxConstraints(maxWidth: r.detailTwoColumns ? 700 : double.infinity),
            child: SingleChildScrollView(
              padding: const EdgeInsets.symmetric(vertical: 8),
              child: FormSection(
                title: '用车信息',
                children: [
                  FormFieldRow(label: '申请单号', value: v.applicationNo, showArrow: false),
                  FormFieldRow(label: '用车目的', value: v.purpose, showArrow: false),
                  FormFieldRow(label: '车型', value: v.vehicleType, showArrow: false),
                  FormFieldRow(label: '开始时间', value: du.DateUtils.formatDateTime(v.startTime), showArrow: false),
                  FormFieldRow(label: '结束时间', value: du.DateUtils.formatDateTime(v.endTime), showArrow: false),
                  FormFieldRow(label: '出发地', value: v.origin, showArrow: false),
                  FormFieldRow(label: '目的地', value: v.destination, showArrow: false),
                  FormFieldRow(label: '乘车人数', value: '${v.passengerCount}人', showArrow: false),
                  FormFieldRow(label: '驾驶员', value: v.driver.isEmpty ? '-' : v.driver, showArrow: false),
                  FormFieldRow(label: '部门', value: v.deptName, showArrow: false),
                  FormFieldRow(label: '申请人', value: v.applicantName, showArrow: false),
                  Padding(
                    padding: const EdgeInsets.fromLTRB(14, 0, 14, 12),
                    child: Row(
                      children: [
                        const SizedBox(width: 72, child: Text('状态', style: TextStyle(color: AppColors.textSecondary, fontSize: 13))),
                        StatusTag(status: v.status),
                      ],
                    ),
                  ),
                  FormFieldRow(label: '用车事由', value: v.reason.isEmpty ? '-' : v.reason, showArrow: false),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}