manager/lib/core/widgets/slide_over_panel.dart

import 'package:flutter/material.dart';

import '../theme/theme_x.dart';

/// A right-anchored detail panel over the still-visible list behind it —
/// the "inspect a record without losing list context" pattern used by
/// Services (and reused by Fleet's per-node cards). Place as the last child
/// of a [Stack] alongside the screen's main content; it fills the stack
/// itself via [Positioned.fill] and no-ops when [open] is false.
class SlideOverPanel extends StatelessWidget {
  const SlideOverPanel({
    super.key,
    required this.open,
    required this.onClose,
    required this.title,
    this.subtitle,
    required this.body,
    this.actions = const [],
    this.headerActions = const [],
    this.width = 420,
  });

  final bool open;
  final VoidCallback onClose;
  final String title;
  final Widget? subtitle;
  final Widget body;
  final List<Widget> actions;

  /// Icon buttons shown before the close button — for actions that belong
  /// with the record identity (e.g. Edit) rather than the primary action
  /// row at the bottom, which stays reserved for the few actions that need
  /// full label width.
  final List<Widget> headerActions;
  final double width;

  @override
  Widget build(BuildContext context) {
    final reduceMotion = MediaQuery.disableAnimationsOf(context);
    final duration = reduceMotion ? Duration.zero : const Duration(milliseconds: 200);

    return Positioned.fill(
      child: IgnorePointer(
        ignoring: !open,
        child: Stack(
          children: [
            AnimatedOpacity(
              opacity: open ? 1 : 0,
              duration: duration,
              child: GestureDetector(
                onTap: onClose,
                child: Container(color: Colors.black.withValues(alpha: 0.35)),
              ),
            ),
            Align(
              alignment: Alignment.centerRight,
              child: ClipRect(
                child: AnimatedSlide(
                  offset: open ? Offset.zero : const Offset(1, 0),
                  duration: duration,
                  curve: Curves.easeOutCubic,
                  child: Container(
                    width: width,
                    constraints: BoxConstraints(maxWidth: MediaQuery.sizeOf(context).width * 0.92),
                    height: double.infinity,
                    decoration: BoxDecoration(
                      color: context.colors.surface,
                      border: Border(left: BorderSide(color: context.colors.outlineVariant)),
                      boxShadow: [
                        BoxShadow(color: Colors.black.withValues(alpha: 0.18), blurRadius: 48, offset: const Offset(-8, 0)),
                      ],
                    ),
                    child: SafeArea(
                      child: Column(
                        children: [
                          Padding(
                            padding: const EdgeInsets.fromLTRB(20, 18, 12, 18),
                            child: Row(
                              crossAxisAlignment: CrossAxisAlignment.start,
                              children: [
                                Expanded(
                                  child: Column(
                                    crossAxisAlignment: CrossAxisAlignment.start,
                                    mainAxisSize: MainAxisSize.min,
                                    children: [
                                      Text(title, style: context.text.titleLarge),
                                      if (subtitle != null) ...[
                                        const SizedBox(height: 6),
                                        subtitle!,
                                      ],
                                    ],
                                  ),
                                ),
                                ...headerActions,
                                IconButton(
                                  onPressed: onClose,
                                  icon: const Icon(Icons.close, size: 19),
                                  tooltip: 'Close',
                                ),
                              ],
                            ),
                          ),
                          const Divider(height: 1),
                          Expanded(child: body),
                          if (actions.isNotEmpty) ...[
                            const Divider(height: 1),
                            Padding(
                              padding: const EdgeInsets.all(16),
                              child: Row(
                                children: [
                                  for (var i = 0; i < actions.length; i++) ...[
                                    if (i > 0) const SizedBox(width: 8),
                                    Expanded(child: actions[i]),
                                  ],
                                ],
                              ),
                            ),
                          ],
                        ],
                      ),
                    ),
                  ),
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
}