'use client'

import { useState, useEffect, useCallback } from 'react'
import { SkipBack, SkipForward, Play, Pause, Music } from 'lucide-react'

interface SpotifyState {
  playing: boolean
  track?: string
  artist?: string
  album?: string
  volume?: number
  device?: string
}

export default function SpotifyWidget() {
  const [state, setState] = useState<SpotifyState | null>(null)
  const [loading, setLoading] = useState(true)
  const [actionLoading, setActionLoading] = useState(false)

  const fetchState = useCallback(async () => {
    try {
      const r = await fetch('/api/voice/tools/spotify', {
        headers: {
          'x-voice-internal': process.env.NEXT_PUBLIC_VOICE_API_KEY || '',
        },
      })
      if (r.ok) {
        const d = await r.json()
        setState(d)
      }
    } catch {}
    finally { setLoading(false) }
  }, [])

  useEffect(() => {
    fetchState()
    const t = setInterval(fetchState, 15_000)
    return () => clearInterval(t)
  }, [fetchState])

  const control = async (action: string) => {
    setActionLoading(true)
    try {
      await fetch('/api/voice/tools/spotify', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          'x-voice-internal': process.env.NEXT_PUBLIC_VOICE_API_KEY || '',
        },
        body: JSON.stringify({ action }),
      })
      setTimeout(fetchState, 500)
    } catch {}
    finally { setActionLoading(false) }
  }

  const btnStyle = (active?: boolean): React.CSSProperties => ({
    width: 40, height: 40, borderRadius: 12,
    display: 'flex', alignItems: 'center', justifyContent: 'center',
    background: active ? 'rgba(30,215,96,0.15)' : 'rgba(255,255,255,0.04)',
    border: `1px solid ${active ? 'rgba(30,215,96,0.3)' : 'rgba(255,255,255,0.07)'}`,
    color: active ? '#1ED760' : 'var(--text-secondary)',
    transition: 'all 0.2s ease',
    cursor: actionLoading ? 'not-allowed' : 'pointer',
    opacity: actionLoading ? 0.6 : 1,
  })

  return (
    <div className="card" style={{ padding: '16px 20px', display: 'flex', flexDirection: 'column', gap: 12 }}>
      {/* Header */}
      <div style={{ display: 'flex', alignItems: 'center', gap: 8 }}>
        <div style={{
          width: 28, height: 28, borderRadius: 8,
          background: 'rgba(30,215,96,0.12)',
          border: '1px solid rgba(30,215,96,0.2)',
          display: 'flex', alignItems: 'center', justifyContent: 'center',
        }}>
          <Music size={14} color="#1ED760" />
        </div>
        <span style={{ fontSize: 11, fontWeight: 700, letterSpacing: '0.08em', textTransform: 'uppercase', color: 'var(--text-secondary)' }}>Spotify</span>
        {state?.device && (
          <span style={{ fontSize: 10, color: 'var(--text-tertiary)', marginLeft: 'auto' }}>
            {state.device}
          </span>
        )}
      </div>

      {/* Track info */}
      {loading ? (
        <div style={{ fontSize: 13, color: 'var(--text-tertiary)', textAlign: 'center', padding: '8px 0' }}>Загрузка...</div>
      ) : !state?.track ? (
        <div style={{ fontSize: 13, color: 'var(--text-tertiary)', textAlign: 'center', padding: '8px 0' }}>Ничего не играет</div>
      ) : (
        <div style={{ display: 'flex', flexDirection: 'column', gap: 2 }}>
          <div style={{
            fontSize: 14, fontWeight: 700, color: 'var(--text-primary)',
            overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap',
          }}>{state.track}</div>
          <div style={{
            fontSize: 12, color: 'var(--text-secondary)',
            overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap',
          }}>{state.artist}</div>
        </div>
      )}

      {/* Controls */}
      <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', gap: 10 }}>
        <button style={btnStyle()} onClick={() => control('previous')} disabled={actionLoading}>
          <SkipBack size={16} />
        </button>
        <button
          style={{ ...btnStyle(state?.playing), width: 48, height: 48, borderRadius: 14 }}
          onClick={() => control(state?.playing ? 'pause' : 'play')}
          disabled={actionLoading}
        >
          {state?.playing ? <Pause size={18} /> : <Play size={18} />}
        </button>
        <button style={btnStyle()} onClick={() => control('next')} disabled={actionLoading}>
          <SkipForward size={16} />
        </button>
      </div>
    </div>
  )
}