import 'package:flutter/material.dart';
import 'package:tdesign_flutter/tdesign_flutter.dart';
import '../../core/theme/app_colors.dart';

/// Skeleton 占位卡片，匹配 [ListCard] 布局：
/// ┌────────────────────────┐
/// │ cardNo          amount │  ← Row: 单号(14/600) + 金额(16/700)
/// │                        │
/// │ description            │  ← 描述(14)
/// │                        │
/// │ date        statusTag  │  ← Row: 日期(12) + 状态标签
/// └────────────────────────┘
class SkeletonListCard extends StatelessWidget {
  const SkeletonListCard({super.key});

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: AppColors.bgCard,
        borderRadius: BorderRadius.circular(8),
      ),
      child: TDSkeleton.fromRowCol(
        animation: TDSkeletonAnimation.flashed,
        rowCol: TDSkeletonRowCol(
          objects: const [
            // R1: cardNo + spacer + amount
            [
              TDSkeletonRowColObj.text(width: 120, height: 14),
              TDSkeletonRowColObj.spacer(),
              TDSkeletonRowColObj.text(width: 80, height: 16),
            ],
            // R2: description
            [
              TDSkeletonRowColObj.text(height: 14),
            ],
            // R3: date + spacer + statusTag
            [
              TDSkeletonRowColObj.text(width: 100, height: 12),
              TDSkeletonRowColObj.spacer(),
              TDSkeletonRowColObj.rect(width: 48, height: 20),
            ],
          ],
          style: TDSkeletonRowColStyle(
            rowSpacing: (_) => 8,
          ),
        ),
      ),
    );
  }
}

/// Skeleton 占位卡片，匹配车辆列表卡片布局：
/// ┌────────────────────────┐
/// │ 车牌号         状态徽章 │  ← Row: 车牌(16/700) + 徽章(12)
/// │                        │
/// │ 申请单号       用途标签 │  ← Row: 单号(12) + 标签(10)
/// │                        │
/// │ 路线 ...        时间    │  ← Row: 路线(13/ellipsis) + 时间(12)
/// └────────────────────────┘
class SkeletonVehicleCard extends StatelessWidget {
  const SkeletonVehicleCard({super.key});

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: AppColors.bgCard,
        borderRadius: BorderRadius.circular(8),
      ),
      child: TDSkeleton.fromRowCol(
        animation: TDSkeletonAnimation.flashed,
        rowCol: TDSkeletonRowCol(
          objects: const [
            // R1: licensePlate + spacer + status badge
            [
              TDSkeletonRowColObj.text(width: 100, height: 16),
              TDSkeletonRowColObj.spacer(),
              TDSkeletonRowColObj.rect(width: 48, height: 20),
            ],
            // R2: applicationNo + spacer + purpose tag
            [
              TDSkeletonRowColObj.text(width: 140, height: 12),
              TDSkeletonRowColObj.spacer(),
              TDSkeletonRowColObj.rect(width: 40, height: 16),
            ],
            // R3: route (flex) + spacer + date
            [
              TDSkeletonRowColObj.text(flex: 2, height: 13),
              TDSkeletonRowColObj.spacer(flex: 1),
              TDSkeletonRowColObj.text(width: 120, height: 12),
            ],
          ],
          style: TDSkeletonRowColStyle(
            rowSpacing: (_) => 6,
          ),
        ),
      ),
    );
  }
}

/// 外勤日志 Skeleton 占位卡片
///
/// 匹配外勤日志卡片布局：visitNo → customerName+状态 → address → summary+date
class SkeletonOutingLogCard extends StatelessWidget {
  const SkeletonOutingLogCard({super.key});

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: AppColors.bgCard,
        borderRadius: BorderRadius.circular(8),
      ),
      child: TDSkeleton.fromRowCol(
        animation: TDSkeletonAnimation.flashed,
        rowCol: TDSkeletonRowCol(
          objects: const [
            // R1: visitNo
            [TDSkeletonRowColObj.text(width: 100, height: 11)],
            // R2: customerName + spacer + statusTag
            [
              TDSkeletonRowColObj.text(flex: 3, height: 15),
              TDSkeletonRowColObj.spacer(flex: 1),
              TDSkeletonRowColObj.rect(width: 48, height: 20),
            ],
            // R3: checkInAddress
            [TDSkeletonRowColObj.text(height: 12)],
            // R4: summary + spacer + date
            [
              TDSkeletonRowColObj.text(flex: 2, height: 12),
              TDSkeletonRowColObj.spacer(flex: 1),
              TDSkeletonRowColObj.text(width: 80, height: 11),
            ],
          ],
          style: TDSkeletonRowColStyle(rowSpacing: (_) => 4),
        ),
      ),
    );
  }
}

/// 公告 Skeleton 占位卡片
///
/// 匹配公告卡片布局：title 行 + typeTag/publisher/date 行
class SkeletonAnnouncementCard extends StatelessWidget {
  const SkeletonAnnouncementCard({super.key});

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: AppColors.bgCard,
        borderRadius: BorderRadius.circular(8),
      ),
      child: TDSkeleton.fromRowCol(
        animation: TDSkeletonAnimation.flashed,
        rowCol: TDSkeletonRowCol(
          objects: const [
            // R1: title (full width)
            [TDSkeletonRowColObj.text(height: 15)],
            // R2: typeTag + spacer + date
            [
              TDSkeletonRowColObj.rect(width: 56, height: 20),
              TDSkeletonRowColObj.spacer(width: 8),
              TDSkeletonRowColObj.text(width: 60, height: 12),
              TDSkeletonRowColObj.spacer(),
              TDSkeletonRowColObj.text(width: 120, height: 12),
            ],
          ],
          style: TDSkeletonRowColStyle(rowSpacing: (_) => 8),
        ),
      ),
    );
  }
}

/// 列表加载态：骨架卡片占位
///
/// [cardCount] 骨架卡片数量，默认 5
/// [cardBuilder] 骨架卡片构建器，默认 [SkeletonListCard]
class SkeletonLoadingList extends StatelessWidget {
  final int cardCount;
  final Widget Function() cardBuilder;

  const SkeletonLoadingList({
    super.key,
    this.cardCount = 5,
    this.cardBuilder = _defaultBuilder,
  });

  static Widget _defaultBuilder() => const SkeletonListCard();

  @override
  Widget build(BuildContext context) {
    return ListView(
      padding: const EdgeInsets.fromLTRB(16, 16, 16, 24),
      physics: const NeverScrollableScrollPhysics(),
      children: List.generate(
        cardCount,
        (_) => Padding(
          padding: const EdgeInsets.only(bottom: 16),
          child: cardBuilder(),
        ),
      ),
    );
  }
}