import { Mic, Square, X, Radio } from 'lucide-react';
import { Button } from '@/components/ui/button';
import { cn } from '@/lib/utils';

export type DVKMsg = { slot: number; label: string; has_audio: boolean; duration_sec: number };
export type DVKStat = { recording: boolean; playing: boolean; rec_slot: number };

type Props = {
  messages: DVKMsg[];
  status: DVKStat;
  onPlay: (slot: number) => void;
  onStop: () => void;
  onClose: () => void;
};

// Operating panel for the Digital Voice Keyer — transmits the recorded F1–F6
// voice messages to the rig ("To Radio"). Mirrors the WinKeyer panel's slot in
// the reserved area. Recording/labeling lives in Settings → Audio.
export function DvkPanel({ messages, status, onPlay, onStop, onClose }: Props) {
  const anyAudio = messages.some((m) => m.has_audio);
  return (
    <div className="h-full flex flex-col rounded-lg border border-border bg-card shadow-sm overflow-hidden">
      <div className="flex items-center gap-2 px-3 py-1.5 border-b border-border bg-muted/40 shrink-0">
        <Mic className="size-3.5 text-primary" />
        <span className="text-[11px] font-semibold uppercase tracking-wider">Voice keyer</span>
        <span className={cn('size-2 rounded-full', status.playing ? 'bg-amber-500 animate-pulse' : 'bg-emerald-500')} />
        {status.playing && <span className="text-[10px] text-amber-600 font-medium">transmitting…</span>}
        <div className="flex-1" />
        <Button variant="ghost" size="sm" className="h-6 px-2 text-[11px]" onClick={onStop} disabled={!status.playing}>
          <Square className="size-3" /> Stop
        </Button>
        <button className="text-muted-foreground hover:text-foreground" title="Disable voice keyer" onClick={onClose}>
          <X className="size-3.5" />
        </button>
      </div>

      <div className="flex-1 min-h-0 overflow-auto p-2">
        {!anyAudio ? (
          <div className="h-full flex flex-col items-center justify-center gap-1 text-center text-[11px] text-muted-foreground px-3">
            <Radio className="size-5 opacity-50" />
            No messages recorded yet. Open <strong>Settings → Audio devices &amp; voice keyer</strong> to record F1–F6.
          </div>
        ) : (
          <div className="grid grid-cols-2 gap-1.5">
            {messages.map((m) => (
              <button
                key={m.slot}
                type="button"
                disabled={!m.has_audio}
                onClick={() => onPlay(m.slot)}
                title={m.has_audio ? `Transmit F${m.slot}${m.label ? ' — ' + m.label : ''} (${m.duration_sec.toFixed(1)}s)` : `F${m.slot} — empty`}
                className={cn(
                  'flex items-center gap-1.5 rounded-md border px-2 py-1.5 text-left transition-colors',
                  m.has_audio
                    ? 'border-border bg-background hover:border-primary/60 hover:bg-accent/30 cursor-pointer'
                    : 'border-dashed border-border/60 text-muted-foreground/50 cursor-not-allowed',
                )}
              >
                <span className="font-mono text-[11px] font-bold text-primary shrink-0">F{m.slot}</span>
                <span className="text-xs truncate flex-1">{m.label || (m.has_audio ? 'message' : '—')}</span>
                {m.has_audio && <span className="text-[9px] text-muted-foreground shrink-0">{m.duration_sec.toFixed(1)}s</span>}
              </button>
            ))}
          </div>
        )}
      </div>
    </div>
  );
}