part of '../message_group.dart';

class _ReactionsRow extends StatelessWidget {
  final Event event;
  final Timeline timeline;
  final Room? room;
  final String currentUserId;
  final PyramidTheme pt;

  const _ReactionsRow({
    required this.event,
    required this.timeline,
    required this.currentUserId,
    required this.pt,
    this.room,
  });

  @override
  Widget build(BuildContext context) {
    final reactionEvents = event.aggregatedEvents(timeline, RelationshipTypes.reaction);
    if (reactionEvents.isEmpty) return const SizedBox.shrink();

    // Group by emoji key → list of senders
    final Map<String, List<String>> grouped = {};
    for (final r in reactionEvents) {
      final key = r.content.tryGetMap<String, dynamic>('m.relates_to')?['key'] as String?;
      if (key == null || key.isEmpty) continue;
      (grouped[key] ??= []).add(r.senderId);
    }
    if (grouped.isEmpty) return const SizedBox.shrink();

    return Padding(
      padding: const EdgeInsets.only(top: 4, bottom: 2),
      child: Wrap(
        spacing: 4,
        runSpacing: 4,
        children: grouped.entries.map((e) {
          final myReaction = e.value.contains(currentUserId);
          return _ReactionChip(
            emoji: e.key,
            count: e.value.length,
            mine: myReaction,
            pt: pt,
            onTap: () {
              if (myReaction) {
                // Find own reaction event to redact
                for (final r in reactionEvents) {
                  final key = r.content.tryGetMap<String, dynamic>('m.relates_to')?['key'] as String?;
                  if (key == e.key && r.senderId == currentUserId) {
                    r.redactEvent().catchError((_) => null);
                    break;
                  }
                }
              } else {
                room?.sendReaction(event.eventId, e.key).catchError((_) => '');
                ReactionService.recordUsed(e.key);
              }
            },
          );
        }).toList(),
      ),
    );
  }
}

class _ReactionChip extends StatefulWidget {
  final String emoji;
  final int count;
  final bool mine;
  final PyramidTheme pt;
  final VoidCallback onTap;

  const _ReactionChip({
    required this.emoji,
    required this.count,
    required this.mine,
    required this.pt,
    required this.onTap,
  });

  @override
  State<_ReactionChip> createState() => _ReactionChipState();
}

class _ReactionChipState extends State<_ReactionChip> {
  bool _hovered = false;

  @override
  Widget build(BuildContext context) {
    final pt = widget.pt;
    return MouseRegion(
      cursor: SystemMouseCursors.click,
      onEnter: (_) => setState(() => _hovered = true),
      onExit: (_) => setState(() => _hovered = false),
      child: GestureDetector(
        onTap: widget.onTap,
        child: AnimatedContainer(
          duration: const Duration(milliseconds: 120),
          padding: const EdgeInsets.symmetric(horizontal: 7, vertical: 3),
          decoration: BoxDecoration(
            color: widget.mine
                ? pt.accentSoft
                : (_hovered ? pt.bgHover : pt.bg2),
            borderRadius: BorderRadius.circular(pt.rBase),
            border: Border.all(
              color: widget.mine ? pt.accent : (_hovered ? pt.borderStrong : pt.border),
            ),
          ),
          child: Row(
            mainAxisSize: MainAxisSize.min,
            children: [
              Text(widget.emoji, style: const TextStyle(fontSize: 13)),
              const SizedBox(width: 4),
              Text(
                '${widget.count}',
                style: TextStyle(
                  color: widget.mine ? pt.accent : pt.fgMuted,
                  fontSize: 12,
                  fontWeight: FontWeight.w500,
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

class _QuickReactionBtn extends StatefulWidget {
  final String emoji;
  final PyramidTheme pt;
  final VoidCallback? onTap;

  const _QuickReactionBtn({required this.emoji, required this.pt, this.onTap});

  @override
  State<_QuickReactionBtn> createState() => _QuickReactionBtnState();
}

class _QuickReactionBtnState extends State<_QuickReactionBtn> {
  bool _hovered = false;

  @override
  Widget build(BuildContext context) {
    return MouseRegion(
      cursor: SystemMouseCursors.click,
      onEnter: (_) => setState(() => _hovered = true),
      onExit: (_) => setState(() => _hovered = false),
      child: GestureDetector(
        onTap: widget.onTap,
        child: AnimatedContainer(
          duration: const Duration(milliseconds: 100),
          width: 28,
          height: 28,
          decoration: BoxDecoration(
            color: _hovered ? widget.pt.bgHover : Colors.transparent,
            borderRadius: BorderRadius.circular(widget.pt.rSm),
          ),
          child: Center(
            child: Text(widget.emoji, style: const TextStyle(fontSize: 15)),
          ),
        ),
      ),
    );
  }
}