import 'package:flutter/material.dart';
import 'package:tdesign_flutter/tdesign_flutter.dart';
import '../../core/i18n/app_localizations.dart';
import '../../core/theme/app_colors_extension.dart';
import '../widgets/loading_dialog.dart';

/// 审核流处理工具。
///
/// BillSave 成功后调用，根据 [getBillAuditConfig] 返回值决定：
/// - 无审核流 → 直接 return
/// - 有审核流 + 自动提交（[skipOnAutoSubmit]=false）→ 直接调 [onShSubmit]
/// - 有审核流 + 自动提交（[skipOnAutoSubmit]=true）→ 直接 return（ERP 已处理）
/// - 有审核流 + 不自动提交 → 弹窗询问，用户确认后调 [onShSubmit]
/// - getBillAuditConfig 出错 → 直接 return
class AuditFlowHelper {
  AuditFlowHelper._();

  /// [getConfig] 调用 getBillAuditConfig，[onShSubmit] 调用 SHSubmit。
  /// 调用方需确保 [context] 来自当前 mounted 的 widget。
  /// [skipOnAutoSubmit] 为 true 时，自动提交场景不调 shSubmit（AE/BX 等 ERP 侧已处理的单据）。
  static Future<void> handle({
    required BuildContext context,
    required AppLocalizations l10n,
    required Future<Map<String, dynamic>> Function() getConfig,
    required Future<void> Function() onShSubmit,
    bool skipOnAutoSubmit = false,
  }) async {
    final colors = Theme.of(context).extension<AppColorsExtension>()!;
    try {
      final config = await getConfig();
      final hasFlow = config['hasAuditFlow'] == true;
      final autoSubmit = config['autoSubmit'] == true;

      if (!hasFlow) return;

      if (autoSubmit) {
        if (!skipOnAutoSubmit) {
          // ignore: use_build_context_synchronously
          await _runWithLoading(context, l10n, onShSubmit);
        }
        return;
      }

      // ignore: use_build_context_synchronously
      final shouldSubmit = await _showDialog(colors, context, l10n);
      if (shouldSubmit == true) {
        // ignore: use_build_context_synchronously
        await _runWithLoading(context, l10n, onShSubmit);
      }
    } catch (_) {
      // getBillAuditConfig 或 SHSubmit 失败均不阻塞流程
    }
  }

  /// SHSubmit 执行期间显示 loading，成功失败均自动隐藏。
  static Future<void> _runWithLoading(
    BuildContext context,
    AppLocalizations l10n,
    Future<void> Function() onShSubmit,
  ) async {
    // ignore: use_build_context_synchronously
    LoadingDialog.show(context, text: l10n.get('submitting'));
    try {
      await onShSubmit();
    } finally {
      // ignore: use_build_context_synchronously
      LoadingDialog.hide(context);
    }
  }

  static Future<bool?> _showDialog(
    AppColorsExtension colors,
    BuildContext context,
    AppLocalizations l10n,
  ) {
    return showDialog<bool>(
      context: context,
      builder: (ctx) => TDAlertDialog(
        title: l10n.get('submit'),
        content: l10n.get('auditFlowPrompt'),
        buttonStyle: TDDialogButtonStyle.text,
        leftBtn: TDDialogButtonOptions(
          title: l10n.get('skipAudit'),
          titleColor: colors.textSecondary,
          action: () => Navigator.pop(ctx, false),
        ),
        rightBtn: TDDialogButtonOptions(
          title: l10n.get('submitToAudit'),
          titleColor: colors.primary,
          action: () => Navigator.pop(ctx, true),
        ),
      ),
    );
  }
}