'use client';

import { useTimerStore } from '@/lib/store';
import { getRemainingMs } from '@/lib/timer-engine';
import type { Timer } from '@/lib/timer-engine';
import { CountdownRing } from './CountdownRing';
import { formatDuration } from '@/lib/format';
import { Coffee, Pause, Play, X, SkipForward, Trophy } from 'lucide-react';
import { showToast } from './Toast';

interface PomodoroViewProps {
  timer: Timer;
}

export function PomodoroView({ timer }: PomodoroViewProps) {
  const now = useTimerStore((s) => s.now);
  const { pause, resume, dismiss, advancePom } = useTimerStore();

  const remaining = getRemainingMs(timer, now);
  const duration = timer.duration ?? 1;
  const progress = Math.max(0, remaining / duration);

  const pomState = timer.pomodoroState;
  const config = timer.pomodoroConfig;
  if (!pomState || !config) return null;

  const isBreak = pomState.isBreak || pomState.isLongBreak;
  const isPaused = timer.state === 'paused';
  const isFiring = timer.state === 'firing';
  const isCompleted = timer.state === 'completed';
  const roundLabel = isBreak
    ? pomState.isLongBreak ? 'Long Break' : 'Break'
    : `Round ${pomState.currentRound} of ${config.rounds}`;

  const ringColor = isBreak ? 'var(--cm-accent-secondary)' : 'var(--cm-accent)';

  // Session complete celebration
  if (isCompleted) {
    const totalMinutes = config.workMinutes * config.rounds + config.breakMinutes * (config.rounds - 1) + config.longBreakMinutes;
    return (
      <div
        className="rounded-2xl border p-8 text-center"
        style={{
          backgroundColor: 'var(--cm-surface-card)',
          borderColor: 'var(--cm-border)',
          background: 'linear-gradient(135deg, var(--cm-surface-card) 0%, rgba(52,211,153,0.08) 100%)',
        }}
      >
        <div className="flex justify-center mb-4">
          <div
            className="w-16 h-16 rounded-full flex items-center justify-center"
            style={{ backgroundColor: 'rgba(52,211,153,0.15)' }}
          >
            <Trophy size={32} style={{ color: 'var(--cm-success)' }} />
          </div>
        </div>
        <h3 className="text-xl font-bold mb-2" style={{ color: 'var(--cm-success)' }}>
          Session Complete!
        </h3>
        <p className="text-sm mb-1" style={{ color: 'var(--cm-text-primary)' }}>
          {timer.label}
        </p>
        <p className="text-xs mb-4" style={{ color: 'var(--cm-text-tertiary)' }}>
          {config.rounds} rounds &middot; ~{totalMinutes} minutes of focused work
        </p>
        <div className="flex justify-center gap-1.5 mb-4">
          {Array.from({ length: config.rounds }).map((_, i) => (
            <div
              key={i}
              className="w-3 h-3 rounded-full"
              style={{ backgroundColor: 'var(--cm-success)' }}
            />
          ))}
        </div>
        <button
          onClick={() => dismiss(timer.id)}
          className="px-6 py-2.5 rounded-xl text-sm font-medium cursor-pointer"
          style={{ backgroundColor: 'var(--cm-surface-muted)', color: 'var(--cm-text-secondary)' }}
        >
          Close
        </button>
      </div>
    );
  }

  return (
    <div
      className="rounded-2xl border p-6 text-center"
      style={{
        backgroundColor: 'var(--cm-surface-card)',
        borderColor: 'var(--cm-border)',
      }}
    >
      {/* Header */}
      <div className="flex items-center justify-center gap-2 mb-4">
        <Coffee size={18} style={{ color: isBreak ? 'var(--cm-accent-secondary)' : 'var(--cm-accent)' }} />
        <span className="text-sm font-medium" style={{ color: 'var(--cm-text-secondary)' }}>
          {timer.label}
        </span>
      </div>

      {/* Round indicator */}
      <div className="flex justify-center gap-1.5 mb-6">
        {Array.from({ length: config.rounds }).map((_, i) => (
          <div
            key={i}
            className="w-3 h-3 rounded-full transition-colors"
            style={{
              backgroundColor:
                i < pomState.completedRounds
                  ? 'var(--cm-success)'
                  : i === pomState.currentRound - 1 && !isBreak
                    ? 'var(--cm-accent)'
                    : 'var(--cm-surface-muted)',
            }}
          />
        ))}
      </div>

      {/* Countdown ring */}
      <div className="flex justify-center mb-4">
        <CountdownRing progress={progress} size={220} strokeWidth={10} color={ringColor}>
          <div className="text-center">
            <div
              className="text-4xl font-mono font-bold tabular-nums"
              style={{ color: 'var(--cm-text-primary)' }}
            >
              {formatDuration(remaining)}
            </div>
            <div className="text-sm mt-1" style={{ color: 'var(--cm-text-tertiary)' }}>
              {roundLabel}
            </div>
          </div>
        </CountdownRing>
      </div>

      {/* Status */}
      {isPaused && (
        <p className="text-sm mb-4 font-medium" style={{ color: 'var(--cm-warning)' }}>
          Paused
        </p>
      )}
      {isFiring && (
        <p className="text-sm mb-4 font-medium animate-pulse" style={{ color: 'var(--cm-critical)' }}>
          {isBreak ? 'Break over! Start next round?' : 'Time\'s up! Take a break?'}
        </p>
      )}

      {/* Actions */}
      <div className="flex justify-center gap-3">
        {(timer.state === 'active' || timer.state === 'warning') && (
          <button
            onClick={() => pause(timer.id)}
            className="flex items-center gap-2 px-5 py-2.5 rounded-xl text-sm font-medium transition-colors cursor-pointer"
            style={{ backgroundColor: 'var(--cm-surface-muted)', color: 'var(--cm-text-secondary)' }}
          >
            <Pause size={16} /> Pause
          </button>
        )}

        {isPaused && (
          <button
            onClick={() => resume(timer.id)}
            className="flex items-center gap-2 px-5 py-2.5 rounded-xl text-sm font-medium transition-colors cursor-pointer"
            style={{ backgroundColor: 'var(--cm-accent)', color: '#fff' }}
          >
            <Play size={16} /> Resume
          </button>
        )}

        {isFiring && (
          <button
            onClick={() => advancePom(timer.id)}
            className="flex items-center gap-2 px-5 py-2.5 rounded-xl text-sm font-medium transition-colors cursor-pointer"
            style={{ backgroundColor: 'var(--cm-accent)', color: '#fff' }}
          >
            <SkipForward size={16} /> {isBreak ? 'Start Work' : 'Start Break'}
          </button>
        )}

        <button
          onClick={() => dismiss(timer.id)}
          className="flex items-center gap-2 px-5 py-2.5 rounded-xl text-sm font-medium transition-colors cursor-pointer"
          style={{ backgroundColor: 'rgba(255,71,87,0.15)', color: 'var(--cm-danger)' }}
        >
          <X size={16} /> End
        </button>
      </div>

      {/* Stats */}
      <div className="mt-4 flex justify-center gap-6 text-xs" style={{ color: 'var(--cm-text-tertiary)' }}>
        <span>Completed: {pomState.completedRounds}/{config.rounds}</span>
        <span>Work: {config.workMinutes}m</span>
        <span>Break: {config.breakMinutes}m</span>
      </div>
    </div>
  );
}