package model

import "fmt"

func GetTemplate1(streamerID int, donatHost, ttsHost string) string {
	style := `body {
        margin: 0;
        padding: 0;
        height: 100vh;
        display: flex;
        justify-content: center;
        align-items: flex-start;
        background-color: #000;
        font-family: Arial, sans-serif;
    }
    #content {
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 100%;
        max-width: 1920px;
        margin: 20px auto;
        gap: 20px;
    }
    #content img {
        width: 100%;
        height: auto;
        max-height: 90vh;
        object-fit: contain;
        border-radius: 15px;
    }
    .text-container, .donation-user {
        opacity: 0;
        animation: fadeIn 2s forwards;
    }
    .text-container {
        display: flex;
        align-items: center;
        gap: 20px;
        font-size: 40px;
        color: #fff;
        text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    }
    .donation-user {
        font-size: 35px;
        color: #FFD700;
        text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    }
    .donation-text {
        margin: 0;
    }
    .donation-amount {
        color: #4CAF50;
        font-weight: bold;
        padding: 5px 15px;
        background: rgba(0,0,0,0.7);
        border-radius: 8px;
    }
    @keyframes fadeIn {
        to { opacity: 1; }
    }`

	script := fmt.Sprintf(`
let widgetUrl = 'https://%s/api';
let ttsUrl = 'https://%s/api/tts';

function startHeartbeat(streamerID) {
    setInterval(async () => {
        try {
            await fetch(widgetUrl + '/widget/update-streamer-online/' + streamerID, {
                method: 'PUT',
                headers: {'Content-Type': 'application/json'}
            });
        } catch (error) {
            console.error('Heartbeat error:', error);
        }
    }, 10000);
}

function createTextWithAmount(text, amount) {
    const container = document.createElement('div');
    container.className = 'text-container';
    const textElem = document.createElement('p');
    textElem.className = 'donation-text';
    textElem.textContent = text;
    const amountElem = document.createElement('div');
    amountElem.className = 'donation-amount';
    amountElem.textContent = amount + '₽';
    container.appendChild(textElem);
    container.appendChild(amountElem);
    return container;
}

function createTextElement(text) {
    const container = document.createElement('div');
    container.className = 'text-container';
    const textElem = document.createElement('p');
    textElem.className = 'donation-text';
    textElem.textContent = text;
    container.appendChild(textElem);
    return container;
}

async function getDonatInfo(streamerID) {
    try {
        let response = await fetch(widgetUrl + '/widget/get-donat-for-playing/' + streamerID);
        if (!response.ok) {
            console.error('Failed to get donation info:', response.status);
            return null;
        }
        const data = await response.json();
        return (data && Object.keys(data).length > 0) ? data : null;
    } catch (error) {
        console.error('Fetch error (getDonatInfo):', error);
        return null;
    }
}

function playAudio(url, volume, signal) {
    return new Promise((resolve, reject) => {
        if (signal?.aborted) return reject(new DOMException('Aborted', 'AbortError'));
        const audio = new Audio(url);
        audio.volume = volume;
        const onAbort = () => {
            audio.pause();
            audio.src = '';
            reject(new DOMException('Aborted', 'AbortError'));
        };
        signal?.addEventListener('abort', onAbort, { once: true });
        audio.addEventListener('ended', () => {
            signal?.removeEventListener('abort', onAbort);
            resolve(audio);
        }, { once: true });
        audio.addEventListener('error', (e) => {
            signal?.removeEventListener('abort', onAbort);
            reject(e.error || new Error('Audio playback failed'));
        }, { once: true });
        audio.play().catch(err => {
            signal?.removeEventListener('abort', onAbort);
            reject(err);
        });
    });
}

async function playSpeech(text, voiceSettings, signal) {
    if (signal?.aborted) throw new DOMException('Aborted', 'AbortError');
    if (!voiceSettings.voice_enabled) return;

    const requestBody = { text, speed: (voiceSettings.voice_speed || 'medium').toLowerCase(), scenery: voiceSettings.scenery || 'default', sound_percent: voiceSettings.voice_sound_percent || 100, min_price: voiceSettings.min_price || 0, languages: voiceSettings.languages || ['ru'] };
    const response = await fetch(ttsUrl + '/generate', { method: 'POST', headers: {'Content-Type': 'application/json'}, body: JSON.stringify(requestBody), signal });
    if (!response.ok) throw new Error('TTS API error: ' + response.status);
    
    const blob = await response.blob();
    const objectUrl = URL.createObjectURL(blob);
    try {
        await playAudio(objectUrl, (voiceSettings.voice_sound_percent || 100) / 100, signal);
    } finally {
        URL.revokeObjectURL(objectUrl);
    }
}

async function playMedia(donat, voiceSettings) {
    const controller = new AbortController();
    const timeoutDuration = (donat.duration || 5) * 1000;

    const mediaPromise = (async () => {
        if (donat.play_content && donat.audio_link) {
            await playAudio(donat.audio_link, (voiceSettings.voice_sound_percent || 100) / 100, controller.signal);
            if (donat.text && donat.show_text) {
                await playSpeech(donat.text, voiceSettings, controller.signal);
            }
        } else if (donat.text && donat.voice_enabled && donat.show_text) {
            await playSpeech(donat.text, voiceSettings, controller.signal);
        }
    })();

    const timeoutPromise = new Promise((_, reject) => {
        setTimeout(() => {
            controller.abort();
            reject(new DOMException('Timeout', 'AbortError'));
        }, timeoutDuration);
    });

    return Promise.race([mediaPromise, timeoutPromise]);
}

function clearContainer(container) {
    while (container.firstChild) {
        container.removeChild(container.firstChild);
    }
}

async function widgetView() {
    const streamerID = '%v';
    startHeartbeat(streamerID);
    const contentDiv = document.getElementById('content');

    while (true) {
        let currentDonat = null;
        const iterationStart = Date.now();

        try {
            currentDonat = await getDonatInfo(streamerID);
            if (!currentDonat) {
                await new Promise(r => setTimeout(r, 5000));
                continue; // Переходим к следующей итерации, если донатов нет
            }
            
            // --- Отображение ---
            clearContainer(contentDiv); // Очищаем перед показом нового
            if (currentDonat.image_link) {
                const img = document.createElement('img');
                img.src = currentDonat.image_link;
                contentDiv.appendChild(img);
            }
            if (currentDonat.show_name && currentDonat.donat_user) {
                const userElem = document.createElement('div');
                userElem.className = 'donation-user';
                userElem.textContent = currentDonat.donat_user;
                contentDiv.appendChild(userElem);
            }
            if (currentDonat.show_text && currentDonat.text) {
                const textElem = currentDonat.amount ? 
                    createTextWithAmount(currentDonat.text, currentDonat.amount) : 
                    createTextElement(currentDonat.text);
                contentDiv.appendChild(textElem);
            }

            const voiceSettings = { voice_speed: currentDonat.voice_speed, scenery: currentDonat.scenery, voice_sound_percent: currentDonat.voice_sound_percent, min_price: currentDonat.min_price, languages: currentDonat.languages, voice_enabled: currentDonat.voice_enabled };
            await playMedia(currentDonat, voiceSettings);

        } catch (error) {
            console.error('Ошибка обработки доната:', error.name === 'AbortError' ? 'Таймаут или блокировка звука' : error);
        } finally {
            if (currentDonat) {
                // Отмечаем донат как просмотренный
                if (currentDonat.order_id) {
                    try {
                        await fetch(widgetUrl + '/widget/donat/viewed', {
                            method: 'POST',
                            headers: {'Content-Type': 'application/json'},
                            body: JSON.stringify({order_id: currentDonat.order_id}),
                        });
                    } catch (e) {
                        console.error('Не удалось отметить донат как просмотренный:', e);
                    }
                }
                
                const elapsedMs = Date.now() - iterationStart;
                const durationMs = (currentDonat.duration || 5) * 1000;
                const remainingTimeMs = Math.max(0, durationMs - elapsedMs);
                
                if (remainingTimeMs > 0) {
                    await new Promise(r => setTimeout(r, remainingTimeMs));
                }
                
                clearContainer(contentDiv);
            }
        }
    }
}

document.addEventListener('DOMContentLoaded', widgetView);`, donatHost, ttsHost, streamerID)

	template := fmt.Sprintf(`<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <style>%s</style>
    </head>
    <body>
        <div id='content'></div>
        <script>%s</script>
    </body>
</html>`, style, script)

	return template
}