'use client';

import { useEffect, useState } from 'react';
import AudioPlayer from './AudioPlayer';
import GuessInput from './GuessInput';
import Statistics from './Statistics';
import { useGameState } from '../lib/gameState';
import { sendGotifyNotification, submitRating } from '../app/actions';

interface GameProps {
    dailyPuzzle: {
        id: number;
        puzzleNumber: number;
        audioUrl: string;
        songId: number;
        title: string;
        artist: string;
        coverImage: string | null;
        releaseYear?: number | null;
        startTime?: number;
    } | null;
    genre?: string | null;
    isSpecial?: boolean;
    maxAttempts?: number;
    unlockSteps?: number[];
}

const DEFAULT_UNLOCK_STEPS = [2, 4, 7, 11, 16, 30, 60];

export default function Game({ dailyPuzzle, genre = null, isSpecial = false, maxAttempts = 7, unlockSteps = DEFAULT_UNLOCK_STEPS }: GameProps) {
    const { gameState, statistics, addGuess, giveUp, addReplay, addYearBonus, skipYearBonus } = useGameState(genre, maxAttempts);
    const [hasWon, setHasWon] = useState(false);
    const [hasLost, setHasLost] = useState(false);
    const [shareText, setShareText] = useState('🔗 Share');
    const [lastAction, setLastAction] = useState<'GUESS' | 'SKIP' | null>(null);
    const [isProcessingGuess, setIsProcessingGuess] = useState(false);
    const [timeUntilNext, setTimeUntilNext] = useState('');
    const [hasRated, setHasRated] = useState(false);
    const [showYearModal, setShowYearModal] = useState(false);
    const [hasPlayedAudio, setHasPlayedAudio] = useState(false);

    useEffect(() => {
        const updateCountdown = () => {
            const now = new Date();
            const tomorrow = new Date(now);
            tomorrow.setHours(24, 0, 0, 0);
            const diff = tomorrow.getTime() - now.getTime();

            const hours = Math.floor(diff / (1000 * 60 * 60));
            const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60));

            setTimeUntilNext(`${hours}h ${minutes}m`);
        };

        updateCountdown();
        const interval = setInterval(updateCountdown, 1000);
        return () => clearInterval(interval);
    }, []);

    useEffect(() => {
        if (gameState && dailyPuzzle) {
            setHasWon(gameState.isSolved);
            setHasLost(gameState.isFailed);

            // Show year modal if won but year not guessed yet and release year is available
            if (gameState.isSolved && !gameState.yearGuessed && dailyPuzzle.releaseYear) {
                setShowYearModal(true);
            }
        }
    }, [gameState, dailyPuzzle]);

    useEffect(() => {
        setLastAction(null);
    }, [dailyPuzzle?.id]);

    useEffect(() => {
        if (dailyPuzzle) {
            const ratedPuzzles = JSON.parse(localStorage.getItem('hoerdle_rated_puzzles') || '[]');
            if (ratedPuzzles.includes(dailyPuzzle.id)) {
                setHasRated(true);
            } else {
                setHasRated(false);
            }
        }
    }, [dailyPuzzle]);

    if (!dailyPuzzle) return (
        <div className="game-container" style={{ textAlign: 'center', padding: '2rem' }}>
            <h2>No Puzzle Available</h2>
            <p>Could not generate a daily puzzle.</p>
            <p>Please ensure there are songs in the database{genre ? ` for genre "${genre}"` : ''}.</p>
            <a href="/admin" style={{ color: 'var(--primary)', textDecoration: 'underline' }}>Go to Admin Dashboard</a>
        </div>
    );
    if (!gameState) return <div>Loading state...</div>;

    const handleGuess = (song: any) => {
        if (isProcessingGuess) return;

        setIsProcessingGuess(true);
        setLastAction('GUESS');
        if (song.id === dailyPuzzle.songId) {
            addGuess(song.title, true);
            setHasWon(true);
            // Notification sent after year guess or skip
            if (!dailyPuzzle.releaseYear) {
                sendGotifyNotification(gameState.guesses.length + 1, 'won', dailyPuzzle.id, genre, gameState.score);
            }
        } else {
            addGuess(song.title, false);
            if (gameState.guesses.length + 1 >= maxAttempts) {
                setHasLost(true);
                setHasWon(false);
                sendGotifyNotification(maxAttempts, 'lost', dailyPuzzle.id, genre, 0); // Score is 0 on failure
            }
        }
        setTimeout(() => setIsProcessingGuess(false), 500);
    };

    const handleStartAudio = () => {
        // This will be called when user clicks "Start" button on first attempt
        // We'll trigger the audio player programmatically
        setHasPlayedAudio(true);
    };

    const handleSkip = () => {
        // If user hasn't played audio yet on first attempt, start it instead of skipping
        if (gameState.guesses.length === 0 && !hasPlayedAudio) {
            handleStartAudio();
            return;
        }

        setLastAction('SKIP');
        addGuess("SKIPPED", false);

        if (gameState.guesses.length + 1 >= maxAttempts) {
            setHasLost(true);
            setHasWon(false);
            sendGotifyNotification(maxAttempts, 'lost', dailyPuzzle.id, genre, 0); // Score is 0 on failure
        }
    };

    const handleGiveUp = () => {
        setLastAction('SKIP');
        addGuess("SKIPPED", false);
        giveUp(); // Ensure game is marked as failed and score reset to 0
        setHasLost(true);
        setHasWon(false);
        sendGotifyNotification(maxAttempts, 'lost', dailyPuzzle.id, genre, 0);
    };

    const handleYearGuess = (year: number) => {
        const correct = year === dailyPuzzle.releaseYear;
        addYearBonus(correct);
        setShowYearModal(false);

        // Send notification now that game is fully complete
        sendGotifyNotification(gameState.guesses.length, 'won', dailyPuzzle.id, genre, gameState.score + (correct ? 10 : 0));
    };

    const handleYearSkip = () => {
        skipYearBonus();
        setShowYearModal(false);
        // Send notification now that game is fully complete
        sendGotifyNotification(gameState.guesses.length, 'won', dailyPuzzle.id, genre, gameState.score);
    };

    const unlockedSeconds = unlockSteps[Math.min(gameState.guesses.length, unlockSteps.length - 1)];

    const handleShare = async () => {
        let emojiGrid = '';
        const totalGuesses = maxAttempts;

        for (let i = 0; i < totalGuesses; i++) {
            if (i < gameState.guesses.length) {
                if (hasWon && i === gameState.guesses.length - 1) {
                    emojiGrid += '🟩';
                } else if (gameState.guesses[i] === 'SKIPPED') {
                    emojiGrid += '⬛';
                } else {
                    emojiGrid += '🟥';
                }
            } else {
                emojiGrid += '⬜';
            }
        }

        const speaker = hasWon ? '🔉' : '🔇';
        const bonusStar = (hasWon && gameState.yearGuessed && dailyPuzzle.releaseYear && gameState.scoreBreakdown.some(item => item.reason === 'Bonus: Correct Year')) ? '⭐' : '';
        const genreText = genre ? `${isSpecial ? 'Special' : 'Genre'}: ${genre}\n` : '';

        let shareUrl = 'https://hoerdle.elpatron.me';
        if (genre) {
            if (isSpecial) {
                shareUrl += `/special/${encodeURIComponent(genre)}`;
            } else {
                shareUrl += `/${encodeURIComponent(genre)}`;
            }
        }

        const text = `Hördle #${dailyPuzzle.puzzleNumber}\n${genreText}\n${speaker}${emojiGrid}${bonusStar}\nScore: ${gameState.score}\n\n#Hördle #Music\n\n${shareUrl}`;

        const isMobile = /iPhone|iPad|iPod|Android/i.test(navigator.userAgent);

        if (isMobile && navigator.share) {
            try {
                await navigator.share({
                    title: `Hördle #${dailyPuzzle.puzzleNumber}`,
                    text: text,
                });
                setShareText('✓ Shared!');
                setTimeout(() => setShareText('🔗 Share'), 2000);
                return;
            } catch (err) {
                if ((err as Error).name !== 'AbortError') {
                    console.error('Share failed:', err);
                }
            }
        }

        try {
            await navigator.clipboard.writeText(text);
            setShareText('✓ Copied!');
            setTimeout(() => setShareText('🔗 Share'), 2000);
        } catch (err) {
            console.error('Clipboard failed:', err);
            setShareText('✗ Failed');
            setTimeout(() => setShareText('🔗 Share'), 2000);
        }
    };

    const handleRatingSubmit = async (rating: number) => {
        if (!dailyPuzzle) return;

        try {
            await submitRating(dailyPuzzle.songId, rating, genre, isSpecial, dailyPuzzle.puzzleNumber);
            setHasRated(true);

            const ratedPuzzles = JSON.parse(localStorage.getItem('hoerdle_rated_puzzles') || '[]');
            if (!ratedPuzzles.includes(dailyPuzzle.id)) {
                ratedPuzzles.push(dailyPuzzle.id);
                localStorage.setItem('hoerdle_rated_puzzles', JSON.stringify(ratedPuzzles));
            }
        } catch (error) {
            console.error('Failed to submit rating', error);
        }
    };

    return (
        <div className="container">
            <header className="header">
                <h1 className="title">Hördle #{dailyPuzzle.puzzleNumber}{genre ? ` / ${genre}` : ''}</h1>
                <div style={{ fontSize: '0.9rem', color: '#666', marginTop: '-0.5rem', marginBottom: '1rem' }}>
                    Next puzzle in: {timeUntilNext}
                </div>
            </header>

            <main className="game-board">
                <div style={{ borderBottom: '1px solid #e5e7eb', paddingBottom: '1rem' }}>
                    <div className="status-bar">
                        <span>Attempt {gameState.guesses.length + 1} / {maxAttempts}</span>
                        <span>{unlockedSeconds}s unlocked</span>
                    </div>

                    <ScoreDisplay score={gameState.score} breakdown={gameState.scoreBreakdown} />

                    <AudioPlayer
                        src={dailyPuzzle.audioUrl}
                        unlockedSeconds={unlockedSeconds}
                        startTime={dailyPuzzle.startTime}
                        autoPlay={lastAction === 'SKIP' || (lastAction === 'GUESS' && !hasWon && !hasLost) || hasPlayedAudio}
                        onReplay={addReplay}
                        onHasPlayedChange={setHasPlayedAudio}
                    />
                </div>

                <div className="guess-list">
                    {gameState.guesses.map((guess, i) => {
                        const isCorrect = hasWon && i === gameState.guesses.length - 1;
                        return (
                            <div key={i} className="guess-item">
                                <span className="guess-number">#{i + 1}</span>
                                <span className={`guess-text ${guess === 'SKIPPED' ? 'skipped' : ''} ${isCorrect ? 'correct' : ''}`}>
                                    {isCorrect ? 'Correct!' : guess}
                                </span>
                            </div>
                        );
                    })}
                </div>

                {!hasWon && !hasLost && (
                    <>
                        <GuessInput onGuess={handleGuess} disabled={isProcessingGuess} />
                        {gameState.guesses.length < maxAttempts - 1 ? (
                            <button
                                onClick={handleSkip}
                                className="skip-button"
                            >
                                {gameState.guesses.length === 0 && !hasPlayedAudio
                                    ? 'Start'
                                    : `Skip (+${unlockSteps[Math.min(gameState.guesses.length + 1, unlockSteps.length - 1)] - unlockedSeconds}s)`
                                }
                            </button>
                        ) : (
                            <button
                                onClick={handleGiveUp}
                                className="skip-button"
                                style={{
                                    background: 'linear-gradient(135deg, #f093fb 0%, #f5576c 100%)',
                                    boxShadow: '0 4px 15px rgba(245, 87, 108, 0.4)'
                                }}
                            >
                                Solve (Give Up)
                            </button>
                        )}
                    </>
                )}

                {(hasWon || hasLost) && (
                    <div className={`message-box ${hasWon ? 'success' : 'failure'}`}>
                        <h2 style={{ fontSize: '1.5rem', fontWeight: 'bold', marginBottom: '0.5rem' }}>
                            {hasWon ? 'You won!' : 'Game Over'}
                        </h2>

                        <div style={{ fontSize: '2rem', fontWeight: 'bold', margin: '1rem 0', color: hasWon ? '#059669' : '#dc2626' }}>
                            Score: {gameState.score}
                        </div>

                        <details style={{ marginBottom: '1rem', cursor: 'pointer', fontSize: '0.9rem', color: '#666' }}>
                            <summary>Score Breakdown</summary>
                            <ul style={{ listStyle: 'none', padding: '0.5rem', textAlign: 'left', background: 'rgba(255,255,255,0.5)', borderRadius: '0.5rem', marginTop: '0.5rem' }}>
                                {gameState.scoreBreakdown.map((item, i) => (
                                    <li key={i} style={{ display: 'flex', justifyContent: 'space-between', padding: '0.25rem 0' }}>
                                        <span>{item.reason}</span>
                                        <span style={{ fontWeight: 'bold', color: item.value >= 0 ? 'green' : 'red' }}>
                                            {item.value > 0 ? '+' : ''}{item.value}
                                        </span>
                                    </li>
                                ))}
                            </ul>
                        </details>

                        <p>{hasWon ? 'Come back tomorrow for a new song.' : 'The song was:'}</p>

                        <div style={{ margin: '1.5rem 0', padding: '1rem', background: 'rgba(255,255,255,0.5)', borderRadius: '0.5rem', display: 'flex', flexDirection: 'column', alignItems: 'center' }}>
                            <img
                                src={dailyPuzzle.coverImage || '/favicon.ico'}
                                alt="Album Cover"
                                style={{ width: '150px', height: '150px', objectFit: 'cover', borderRadius: '0.5rem', marginBottom: '1rem', boxShadow: '0 4px 6px rgba(0,0,0,0.1)' }}
                            />
                            <h3 style={{ fontSize: '1.125rem', fontWeight: 'bold', margin: '0 0 0.5rem 0' }}>{dailyPuzzle.title}</h3>
                            <p style={{ fontSize: '0.875rem', color: '#666', margin: '0 0 0.5rem 0' }}>{dailyPuzzle.artist}</p>
                            {dailyPuzzle.releaseYear && gameState.yearGuessed && (
                                <p style={{ fontSize: '0.875rem', color: '#666', margin: '0 0 1rem 0' }}>Released: {dailyPuzzle.releaseYear}</p>
                            )}
                            <audio controls style={{ width: '100%' }}>
                                <source src={dailyPuzzle.audioUrl} type="audio/mpeg" />
                                Your browser does not support the audio element.
                            </audio>
                        </div>

                        <div style={{ marginBottom: '1rem' }}>
                            <StarRating onRate={handleRatingSubmit} hasRated={hasRated} />
                        </div>

                        {statistics && <Statistics statistics={statistics} />}
                        <button onClick={handleShare} className="btn-primary" style={{ marginTop: '1rem' }}>
                            {shareText}
                        </button>
                    </div>
                )}
            </main>

            {showYearModal && dailyPuzzle.releaseYear && (
                <YearGuessModal
                    correctYear={dailyPuzzle.releaseYear}
                    onGuess={handleYearGuess}
                    onSkip={handleYearSkip}
                />
            )}
        </div>
    );
}

function ScoreDisplay({ score, breakdown }: { score: number, breakdown: Array<{ value: number, reason: string }> }) {
    const tooltipText = breakdown.map(item => `${item.reason}: ${item.value > 0 ? '+' : ''}${item.value}`).join('\n');

    // Create expression: "90 - 2 - 5 + 10"
    // Limit to last 5 items to avoid overflow if too long
    const displayItems = breakdown.length > 5 ?
        [{ value: breakdown[0].value, reason: 'Start' }, ...breakdown.slice(-4)] :
        breakdown;

    const expression = displayItems.map((item, index) => {
        if (index === 0 && breakdown.length <= 5) return item.value.toString();
        if (index === 0 && breakdown.length > 5) return `${item.value} ...`;
        return item.value >= 0 ? `+ ${item.value}` : `- ${Math.abs(item.value)}`;
    }).join(' ');

    return (
        <div className="score-display" title={tooltipText} style={{
            textAlign: 'center',
            margin: '0.5rem 0',
            padding: '0.5rem',
            background: '#f3f4f6',
            borderRadius: '0.5rem',
            fontSize: '0.9rem',
            fontFamily: 'monospace',
            cursor: 'help'
        }}>
            <span style={{ color: '#666' }}>{expression} = </span>
            <span style={{ fontWeight: 'bold', color: 'var(--primary)', fontSize: '1.1rem' }}>{score}</span>
        </div>
    );
}

function YearGuessModal({ correctYear, onGuess, onSkip }: { correctYear: number, onGuess: (year: number) => void, onSkip: () => void }) {
    const [options, setOptions] = useState<number[]>([]);

    useEffect(() => {
        const currentYear = new Date().getFullYear();
        const minYear = 1950;

        const closeOptions = new Set<number>();
        closeOptions.add(correctYear);

        // Add 2 close years (+/- 2)
        while (closeOptions.size < 3) {
            const offset = Math.floor(Math.random() * 5) - 2;
            const year = correctYear + offset;
            if (year <= currentYear && year >= minYear && year !== correctYear) {
                closeOptions.add(year);
            }
        }

        const allOptions = new Set(closeOptions);

        // Fill up to 10 with random years
        while (allOptions.size < 10) {
            const year = Math.floor(Math.random() * (currentYear - minYear + 1)) + minYear;
            allOptions.add(year);
        }

        setOptions(Array.from(allOptions).sort((a, b) => a - b));
    }, [correctYear]);

    return (
        <div style={{
            position: 'fixed',
            top: 0,
            left: 0,
            right: 0,
            bottom: 0,
            background: 'rgba(0,0,0,0.8)',
            display: 'flex',
            alignItems: 'center',
            justifyContent: 'center',
            zIndex: 1000,
            padding: '1rem'
        }}>
            <div style={{
                background: 'white',
                padding: '2rem',
                borderRadius: '1rem',
                maxWidth: '500px',
                width: '100%',
                textAlign: 'center',
                boxShadow: '0 20px 25px -5px rgba(0, 0, 0, 0.1)'
            }}>
                <h3 style={{ fontSize: '1.5rem', fontWeight: 'bold', marginBottom: '0.5rem', color: '#1f2937' }}>Bonus Round!</h3>
                <p style={{ marginBottom: '1.5rem', color: '#4b5563' }}>Guess the release year for <strong style={{ color: '#10b981' }}>+10 points</strong>!</p>

                <div style={{
                    display: 'grid',
                    gridTemplateColumns: 'repeat(auto-fit, minmax(80px, 1fr))',
                    gap: '0.75rem',
                    marginBottom: '1.5rem'
                }}>
                    {options.map(year => (
                        <button
                            key={year}
                            onClick={() => onGuess(year)}
                            style={{
                                padding: '0.75rem',
                                background: '#f3f4f6',
                                border: '2px solid #e5e7eb',
                                borderRadius: '0.5rem',
                                fontSize: '1.1rem',
                                fontWeight: 'bold',
                                color: '#374151',
                                cursor: 'pointer',
                                transition: 'all 0.2s'
                            }}
                            onMouseOver={e => e.currentTarget.style.borderColor = '#10b981'}
                            onMouseOut={e => e.currentTarget.style.borderColor = '#e5e7eb'}
                        >
                            {year}
                        </button>
                    ))}
                </div>

                <button
                    onClick={onSkip}
                    style={{
                        background: 'none',
                        border: 'none',
                        color: '#6b7280',
                        textDecoration: 'underline',
                        cursor: 'pointer',
                        fontSize: '0.9rem'
                    }}
                >
                    Skip Bonus
                </button>
            </div>
        </div>
    );
}

function StarRating({ onRate, hasRated }: { onRate: (rating: number) => void, hasRated: boolean }) {
    const [hover, setHover] = useState(0);
    const [rating, setRating] = useState(0);

    if (hasRated) {
        return <div style={{ color: '#666', fontStyle: 'italic' }}>Thanks for rating!</div>;
    }

    return (
        <div className="star-rating" style={{ display: 'flex', flexDirection: 'column', alignItems: 'center', gap: '0.5rem' }}>
            <span style={{ fontSize: '0.875rem', color: '#666', fontWeight: '500' }}>Rate this puzzle:</span>
            <div style={{ display: 'flex', gap: '0.25rem', justifyContent: 'center' }}>
                {[...Array(5)].map((_, index) => {
                    const ratingValue = index + 1;
                    return (
                        <button
                            key={index}
                            type="button"
                            style={{
                                background: 'none',
                                border: 'none',
                                cursor: 'pointer',
                                fontSize: '2rem',
                                color: ratingValue <= (hover || rating) ? '#ffc107' : '#9ca3af',
                                transition: 'color 0.2s',
                                padding: '0 0.25rem'
                            }}
                            onClick={() => {
                                setRating(ratingValue);
                                onRate(ratingValue);
                            }}
                            onMouseEnter={() => setHover(ratingValue)}
                            onMouseLeave={() => setHover(0)}
                        >
                            ★
                        </button>
                    );
                })}
            </div>
        </div>
    );
}