// static/app.js (v2.0)

document.addEventListener("DOMContentLoaded", () => {
    const chatLog = document.getElementById("chat-log");
    const chatInput = document.getElementById("chat-input");
    const sendButton = document.getElementById("send-button");
    const memoriaLog = document.getElementById("memoria-log");
    const connectionStatus = document.getElementById("connection-status");

    let ws;
    const audioQueue = [];
    let isPlaying = false;

    function setConnectionStatus(status) { // status: 'connected', 'disconnected', 'connecting'
        const statusText = connectionStatus.querySelector('.status-text');
        connectionStatus.className = status;
        switch (status) {
            case 'connected':
                statusText.textContent = 'Conectado';
                break;
            case 'disconnected':
                statusText.textContent = 'Desconectado';
                break;
            case 'connecting':
                statusText.textContent = 'Reconectando...';
                break;
        }
    }

    function addMessageToLog(message, sender) {
        const messageElement = document.createElement("div");
        messageElement.classList.add("chat-message", `${sender}-message`);
        messageElement.textContent = message;
        chatLog.appendChild(messageElement);
        chatLog.scrollTop = chatLog.scrollHeight;
    }

    function playNextAudio() {
        if (isPlaying || audioQueue.length === 0) return;
        isPlaying = true;
        const audioData = audioQueue.shift();
        const audio = new Audio("data:audio/wav;base64," + audioData);
        audio.play();
        audio.onended = () => {
            isPlaying = false;
            playNextAudio();
        };
    }

    function connect() {
        const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
        const host = window.location.host;
        ws = new WebSocket(`${protocol}//${host}/ws`);

        ws.onopen = () => {
            console.log("Conectado al Santuario Digital v2.1.");
            setConnectionStatus('connected');
        };

        ws.onmessage = (event) => {
            const data = JSON.parse(event.data);
            if (data.type === 'text') {
                addMessageToLog(data.content, 'samuel');
            } else if (data.type === 'audio') {
                audioQueue.push(data.content);
                playNextAudio();
            } else if (data.type === 'error') {
                addMessageToLog(`Error de Samuel: ${data.content}`, 'samuel');
            }
        };

        ws.onclose = () => {
            console.log("Desconectado. Intentando reconectar en 5 segundos...");
            setConnectionStatus('disconnected');
            setTimeout(() => {
                setConnectionStatus('connecting');
                connect();
            }, 5000);
        };

        ws.onerror = (error) => {
            console.error("Error de WebSocket:", error);
            setConnectionStatus('disconnected');
            ws.close();
        };
    }

    function sendMessage() {
        const message = chatInput.value.trim();
        if (message && ws && ws.readyState === WebSocket.OPEN) {
            addMessageToLog(message, 'user');
            ws.send(JSON.stringify({ type: 'chat', content: message }));
            chatInput.value = '';
            chatInput.style.height = 'auto';
        }
    }

    sendButton.addEventListener("click", sendMessage);
    chatInput.addEventListener("keydown", (event) => {
        if (event.key === "Enter" && !event.shiftKey) {
            event.preventDefault();
            sendMessage();
        }
    });

    chatInput.addEventListener('input', () => {
        chatInput.style.height = 'auto';
        chatInput.style.height = (chatInput.scrollHeight) + 'px';
    });

    window.switchView = async (view) => {
        document.querySelectorAll('.view').forEach(v => v.classList.remove('active'));
        document.querySelectorAll('.nav-item').forEach(n => n.classList.remove('active'));
        
        document.getElementById(`${view}-view`).classList.add('active');
        document.querySelector(`[onclick="switchView('${view}')"]`).classList.add('active');

        if (view === 'memoria') {
            await fetchMemories();
        }
    };

    async function fetchMemories() {
        try {
            const response = await fetch('/api/memories');
            if (response.ok) {
                const memories = await response.json();
                memoriaLog.innerHTML = '';
                if (memories.length === 0) {
                    memoriaLog.innerHTML = "<p>Aún no hay memorias. Las conversaciones profundas las crearán.</p>";
                } else {
                    memories.forEach(mem => {
                        const entry = document.createElement('div');
                        entry.className = 'memory-entry';
                        const timestamp = new Date(mem.timestamp).toLocaleString('es-AR');
                        entry.innerHTML = `<p class="timestamp">${timestamp}</p><p class="content">${mem.content}</p>`;
                        memoriaLog.appendChild(entry);
                    });
                }
            } else {
                memoriaLog.innerHTML = "<p>No se pudieron cargar las memorias.</p>";
            }
        } catch (error) {
            console.error("Error al cargar memorias:", error);
            memoriaLog.innerHTML = "<p>Error de conexión al cargar las memorias.</p>";
        }
    }

    window.logout = async () => {
        try {
            const response = await fetch('/logout', { method: 'POST' });
            if(response.ok) {
                window.location.href = '/';
            }
        } catch (error) {
            console.error("Error al cerrar sesión:", error);
        }
    };

    connect();
});