"""
성공 화면 컴포넌트
검증 성공 시 전체 화면 전환

통합 버전: Backend API 대신 Gradio file URL 사용
"""

import gradio as gr


class SuccessScreenComponent:
    """성공 화면 컴포넌트"""

    # HTML 템플릿 (data-* 속성으로 값 식별)
    HTML_TEMPLATE = """
    <div class="success-content-wrapper" id="success-content-inner">
        <h1 class="success-title">🎉 Congratulations!</h1>

        <!-- 정답 세션 -->
        <div class="audio-compare-section">
            <div class="answer-word" id="success-answer-word">-</div>

            <!-- 정답 음성 -->
            <div class="audio-card">
                <audio controls preload="auto" id="success-correct-audio" src=""></audio>
            </div>
        </div>

        <!-- 통계 그리드 (3x2) -->
        <div class="stats-grid">
            <!-- Row 1: 오늘 통계 -->
            <div class="stat-card stat-blue">
                <div class="stat-label">Today Participants</div>
                <div class="stat-value" id="success-today-participants">-</div>
            </div>
            <div class="stat-card stat-green">
                <div class="stat-label">Today Success Rate</div>
                <div class="stat-value" id="success-today-success-rate">-</div>
            </div>
            <div class="stat-card stat-yellow">
                <div class="stat-label">Today Attempts</div>
                <div class="stat-value" id="success-today-attempts">-</div>
            </div>

            <!-- Row 2: 전체 통계 -->
            <div class="stat-card stat-indigo">
                <div class="stat-label">Total Participants</div>
                <div class="stat-value" id="success-total-participants">-</div>
            </div>
            <div class="stat-card stat-emerald">
                <div class="stat-label">Total Success Rate</div>
                <div class="stat-value" id="success-total-success-rate">-</div>
            </div>
            <div class="stat-card stat-orange">
                <div class="stat-label">Total Attempts</div>
                <div class="stat-value" id="success-total-attempts">-</div>
            </div>
        </div>
    </div>
    """

    @staticmethod
    def get_js_on_load():
        """JS 코드 - game_state에서 데이터 가져오기 (통합 버전)"""
        return """
        // MutationObserver로 success-screen이 visible 될 때 감지
        const successScreen = document.getElementById('success-screen');
        if (successScreen) {
            const observer = new MutationObserver((mutations) => {
                mutations.forEach((mutation) => {
                    if (mutation.type === 'attributes' && mutation.attributeName === 'class') {
                        // visible 상태 체크 (Gradio가 hidden 클래스 제거할 때)
                        const isVisible = !successScreen.classList.contains('hidden') &&
                                         successScreen.style.display !== 'none';
                        if (isVisible) {
                            updateSuccessScreen();
                        }
                    }
                });
            });
            observer.observe(successScreen, { attributes: true, attributeFilter: ['class', 'style'] });
        }

        // API에서 실시간 stats 데이터 가져오기 (Gradio API 사용)
        async function updateSuccessScreen() {
            try {
                // Gradio API 호출 (event_id 받고 결과 가져오기)
                const callResponse = await fetch('/gradio_api/call/dashboard', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify({ data: [] })
                });
                const { event_id } = await callResponse.json();

                // SSE로 결과 가져오기
                const resultResponse = await fetch('/gradio_api/call/dashboard/' + event_id);
                const text = await resultResponse.text();
                const lines = text.trim().split('\\n');
                const dataLine = lines.find(l => l.startsWith('data:'));
                const stats = JSON.parse(dataLine.replace('data: ', ''))[0];
                console.log('[SUCCESS SCREEN] Stats:', stats);

                // Answer Word 설정
                const answerWordEl = document.getElementById('success-answer-word');
                if (answerWordEl && stats.answer_word) {
                    answerWordEl.textContent = stats.answer_word;
                }

                // Correct Audio 설정 (절대 경로)
                const correctAudio = document.getElementById('success-correct-audio');
                if (correctAudio && stats.reference_audio_path) {
                    const audioUrl = '/gradio_api/file=' + stats.reference_audio_path;
                    correctAudio.src = audioUrl;
                    correctAudio.load();
                    console.log('[SUCCESS SCREEN] Audio URL:', audioUrl);
                }

                // 통계 업데이트
                const todayParticipants = document.getElementById('success-today-participants');
                const todaySuccessRate = document.getElementById('success-today-success-rate');
                const todayAttempts = document.getElementById('success-today-attempts');
                const totalParticipants = document.getElementById('success-total-participants');
                const totalSuccessRate = document.getElementById('success-total-success-rate');
                const totalAttempts = document.getElementById('success-total-attempts');

                if (todayParticipants) todayParticipants.textContent = stats.today_participants || 0;
                if (todaySuccessRate) todaySuccessRate.textContent = (stats.today_success_rate || 0) + '%';
                if (todayAttempts) todayAttempts.textContent = stats.today_attempts || 0;
                if (totalParticipants) totalParticipants.textContent = stats.total_participants || 0;
                if (totalSuccessRate) totalSuccessRate.textContent = (stats.total_success_rate || 0) + '%';
                if (totalAttempts) totalAttempts.textContent = stats.total_attempts || 0;

                // User Audio 설정 (game_state에서)
                const gameStateStr = localStorage.getItem('game_state');
                if (gameStateStr) {
                    const gameState = JSON.parse(gameStateStr);
                    const guesses = gameState.guesses || [];
                    const lastGuess = guesses.length > 0 ? guesses[guesses.length - 1] : null;

                    const userAudio = document.getElementById('success-user-audio');
                    if (userAudio && lastGuess && lastGuess.audioFile) {
                        userAudio.src = '/gradio_api/file=' + lastGuess.audioFile;
                        userAudio.load();
                    }
                }

            } catch (e) {
                console.error('[SUCCESS SCREEN] Error:', e);
            }
        }

        // 초기 로드 시에도 한번 호출 (visible 상태면)
        if (successScreen && !successScreen.classList.contains('hidden')) {
            updateSuccessScreen();
        }
    """

    def __init__(self):
        self.success_screen = None
        self.success_content = None
        self.restart_btn = None

    def render(self, stats: dict = None):
        """
        성공 화면 UI 렌더링

        Args:
            stats: 통계 데이터 딕셔너리 (초기값, JS가 실시간 업데이트)

        Returns:
            tuple: (success_screen, success_content, restart_btn)
        """
        self.success_screen = gr.Column(visible=False, elem_id="success-screen")
        with self.success_screen:
            gr.Markdown("")

            # HTML + JS로 실시간 통계 업데이트
            self.success_content = gr.HTML(
                value=self.HTML_TEMPLATE,
                js_on_load=self.get_js_on_load(),
                elem_id="success-content"
            )

            self.restart_btn = gr.Button(
                "Restart",
                variant="primary",
                size="lg",
                elem_id="restart-btn"
            )

        return self.success_screen, self.success_content, self.restart_btn

    def setup_events(self):
        """처음부터 다시 버튼 이벤트 바인딩 (로컬 스토리지 초기화 후 새로고침)"""
        self.restart_btn.click(
            fn=None,
            js="""() => {
                // 날짜가 유효하지 않을 때와 동일하게 로컬 스토리지 초기화
                const today = new Date().toISOString().split('T')[0];
                const newStorage = {
                    date: today,
                    failures: [],
                    successes: []
                };
                // Gradio BrowserState 키로 저장
                localStorage.setItem('audio_validation_history', JSON.stringify(newStorage));
                localStorage.removeItem('game_state');
                localStorage.removeItem('dashboard_stats');
                // 페이지 새로고침
                window.location.reload();
            }"""
        )