pyramid/lib/features/chat/view/chat_misc.dart

part of '../chat_view.dart';

class _DragOverlay extends StatefulWidget {
  final PyramidTheme pt;
  final bool active;
  const _DragOverlay({required this.pt, required this.active});

  @override
  State<_DragOverlay> createState() => _DragOverlayState();
}

class _DragOverlayState extends State<_DragOverlay>
    with SingleTickerProviderStateMixin {
  // Sanftes Auf-und-ab des Icons, solange das Overlay aktiv ist.
  late final AnimationController _bob = AnimationController(
    vsync: this,
    duration: const Duration(milliseconds: 900),
  );

  @override
  void initState() {
    super.initState();
    if (widget.active) _bob.repeat(reverse: true);
  }

  @override
  void didUpdateWidget(_DragOverlay old) {
    super.didUpdateWidget(old);
    if (widget.active && !old.active) {
      _bob.repeat(reverse: true);
    } else if (!widget.active && old.active) {
      _bob.stop();
    }
  }

  @override
  void dispose() {
    _bob.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    final pt = widget.pt;
    return Container(
      color: pt.bg0.withAlpha(200),
      child: Center(
        child: AnimatedScale(
          scale: widget.active ? 1.0 : 0.88,
          duration: const Duration(milliseconds: 220),
          curve: Curves.easeOutBack,
          child: Container(
            padding: const EdgeInsets.symmetric(horizontal: 40, vertical: 32),
            decoration: BoxDecoration(
              color: pt.bg2,
              borderRadius: BorderRadius.circular(20),
              border: Border.all(color: pt.accent, width: 2),
              boxShadow: [
                BoxShadow(
                  color: pt.accent.withAlpha(60),
                  blurRadius: 32,
                  spreadRadius: 4,
                ),
              ],
            ),
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: [
                AnimatedBuilder(
                  animation: _bob,
                  builder: (_, child) => Transform.translate(
                    offset: Offset(
                        0, -7 * Curves.easeInOut.transform(_bob.value)),
                    child: child,
                  ),
                  child:
                      Icon(Icons.upload_file_rounded, size: 56, color: pt.accent),
                ),
                const SizedBox(height: 16),
                Text(
                  'Datei hier ablegen',
                  style: TextStyle(
                    color: pt.fg,
                    fontSize: 20,
                    fontWeight: FontWeight.w600,
                  ),
                ),
                const SizedBox(height: 8),
                Text(
                  'Loslassen zum Hochladen',
                  style: TextStyle(color: pt.fgMuted, fontSize: 14),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}

// Placeholder shown when no room is selected
class NoChatSelected extends StatelessWidget {
  const NoChatSelected({super.key});

  @override
  Widget build(BuildContext context) {
    final pt = PyramidTheme.of(context);
    return Container(
      color: pt.bg1,
      child: Center(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Icon(Icons.forum_outlined, size: 64, color: pt.fgDim),
            const SizedBox(height: 16),
            Text(
              'Wähle einen Chat aus',
              style: TextStyle(color: pt.fgMuted, fontSize: 16),
            ),
            const SizedBox(height: 8),
            Text(
              'Choose from the sidebar on the left',
              style: TextStyle(color: pt.fgDim, fontSize: 13),
            ),
          ],
        ),
      ),
    );
  }
}

/// Fläche der schwebenden Eingabeleiste: um das Eingabefeld herum völlig
/// klar – der Chat ist dort normal zu sehen –, fängt aber alle Berührungen
/// ab (ColoredBox ist auch transparent „opak“ für Treffer), damit dort nur
/// die Eingabe reagiert und nicht der Chat dahinter. Die Unschärfe sitzt nur
/// hinter dem Eingabefeld selbst (chat_composer.dart).
class _FloatingComposerArea extends StatelessWidget {
  final PyramidTheme pt;
  final Widget child;
  const _FloatingComposerArea({required this.pt, required this.child});

  @override
  Widget build(BuildContext context) {
    return ColoredBox(
      color: Colors.transparent,
      child: Padding(
        padding: const EdgeInsets.only(top: 6),
        child: child,
      ),
    );
  }
}

/// Einladung in diesen Chat (z. B. aus einer Benachrichtigung geöffnet):
/// Annehmen/Ablehnen direkt hier statt eines leeren Verlaufs – vorher ging
/// das nur in der Chatliste (Bernd 2026-10-07).
class _InvitePanel extends ConsumerStatefulWidget {
  final Room room;
  final PyramidTheme pt;
  const _InvitePanel({required this.room, required this.pt});

  @override
  ConsumerState<_InvitePanel> createState() => _InvitePanelState();
}

class _InvitePanelState extends ConsumerState<_InvitePanel> {
  bool _busy = false;
  String? _error;

  String get _inviter {
    final me = widget.room.client.userID;
    final sender = me == null
        ? null
        : widget.room.getState(EventTypes.RoomMember, me)?.senderId;
    if (sender == null) return 'Jemand';
    return widget.room.unsafeGetUserFromMemoryOrFallback(sender).calcDisplayname();
  }

  Future<void> _accept() async {
    setState(() {
      _busy = true;
      _error = null;
    });
    try {
      await acceptInvite(ref, widget.room);
    } catch (_) {
      if (mounted) {
        setState(() {
          _busy = false;
          _error = 'Annehmen hat nicht geklappt – bitte noch einmal versuchen.';
        });
      }
    }
  }

  Future<void> _decline() async {
    setState(() {
      _busy = true;
      _error = null;
    });
    try {
      await widget.room.leave();
      if (mounted) ref.read(activeRoomIdProvider.notifier).state = null;
    } catch (_) {
      if (mounted) {
        setState(() {
          _busy = false;
          _error = 'Ablehnen hat nicht geklappt – bitte noch einmal versuchen.';
        });
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    final pt = widget.pt;
    final isDm = widget.room.isDirectChat;
    return Center(
      child: SingleChildScrollView(
        padding: const EdgeInsets.all(28),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Icon(
              isDm ? Icons.person_add_alt_1_rounded : Icons.group_add_rounded,
              size: 48,
              color: pt.accent,
            ),
            const SizedBox(height: 16),
            Text(
              isDm
                  ? '$_inviter möchte mit dir chatten'
                  : '$_inviter lädt dich in „${widget.room.getLocalizedDisplayname()}“ ein',
              textAlign: TextAlign.center,
              style: TextStyle(
                color: pt.fg,
                fontSize: 17,
                fontWeight: FontWeight.w600,
              ),
            ),
            const SizedBox(height: 8),
            Text(
              'Nach dem Annehmen siehst du die Nachrichten und kannst antworten.',
              textAlign: TextAlign.center,
              style: TextStyle(color: pt.fgMuted, fontSize: 13.5),
            ),
            const SizedBox(height: 24),
            if (_busy)
              SizedBox(
                width: 28,
                height: 28,
                child: CircularProgressIndicator(strokeWidth: 2.5, color: pt.accent),
              )
            else
              Wrap(
                spacing: 12,
                runSpacing: 12,
                alignment: WrapAlignment.center,
                children: [
                  OutlinedButton(
                    onPressed: _decline,
                    style: OutlinedButton.styleFrom(
                      foregroundColor: pt.fgMuted,
                      side: BorderSide(color: pt.border),
                      padding: const EdgeInsets.symmetric(horizontal: 22, vertical: 14),
                    ),
                    child: const Text('Ablehnen'),
                  ),
                  FilledButton(
                    onPressed: _accept,
                    style: FilledButton.styleFrom(
                      backgroundColor: pt.accent,
                      foregroundColor: pt.accentFg,
                      padding: const EdgeInsets.symmetric(horizontal: 26, vertical: 14),
                    ),
                    child: const Text('Annehmen'),
                  ),
                ],
              ),
            if (_error != null) ...[
              const SizedBox(height: 14),
              Text(_error!,
                  textAlign: TextAlign.center,
                  style: TextStyle(color: pt.danger, fontSize: 13)),
            ],
          ],
        ),
      ),
    );
  }
}