{% extends "base.html" %}
{% set active_page = "logs" %}
{% block page_title %}Live-Log{% endblock %}
{% block page_sub %}<div class="topbar-sub">{{ log_name or "kein Logfile" }}</div>{% endblock %}
{% block topbar_right %}
<span class="timer-pill"><span class="dot"></span>Update in <span id="timer">--</span>s</span>
<button id="refresh-btn" class="btn btn-secondary">
  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 12a9 9 0 11-3.2-6.9M21 4v5h-5"/></svg>
  Aktualisieren
</button>
{% endblock %}

{% block content %}
<div class="log-shell">
  <div class="log-toolbar">
    <div class="log-dots"><span></span><span></span><span></span></div>
    <span class="text-faint mono" style="font-size:11.5px;">{{ log_name or "" }}</span>
  </div>
  <div id="log-box">{{ log_content or "Keine Logfiles gefunden." }}</div>
</div>
{% endblock %}

{% block scripts %}
<script>
function parseLogTimestamp(ts) {
    const parts = ts.match(/^(\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2})$/);
    if (!parts) return Date.now();
    const [, year, month, day, hour, minute, second] = parts.map(Number);
    return new Date(year, month - 1, day, hour, minute, second).getTime();
}

function colorizeLine(line) {
    let cls = "";
    if (line.includes(" ist erreichbar!")) cls = "online";
    else if (line.includes(" ist nicht erreichbar!")) cls = "offline";
    else if (line.startsWith("----")) cls = "sep";
    else if (line.toLowerCase().includes("manuell")) cls = "manual";
    const span = document.createElement("span");
    span.className = "log-line" + (cls ? " " + cls : "");
    span.textContent = line;
    return span;
}

document.addEventListener("DOMContentLoaded", () => {
    const intervalMinutes = {{ interval | int }};
    const intervalMilliseconds = intervalMinutes * 60 * 1000;
    let lastUpdateTime = Date.now();

    function renderLog(data) {
        const box = document.getElementById("log-box");
        box.innerHTML = "";
        const lines = data.split("\n");
        lines.forEach((line, i) => {
            box.appendChild(colorizeLine(line));
            if (i < lines.length - 1) box.appendChild(document.createElement("br"));
        });
        box.scrollTop = box.scrollHeight;

        let lastSep = -1;
        for (let i = lines.length - 1; i >= 0; i--) {
            if (lines[i].startsWith("----")) { lastSep = i; break; }
        }
        if (lastSep >= 0 && lastSep + 1 < lines.length) {
            const match = lines[lastSep + 1].match(/^(\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2})/);
            lastUpdateTime = match ? parseLogTimestamp(match[1]) : Date.now();
        } else {
            lastUpdateTime = Date.now();
        }
    }

    function fetchLog() {
        fetch("{{ url_for('get_log') }}")
            .then(r => r.text())
            .then(renderLog)
            .catch(err => console.error(err));
    }

    function updateTimer() {
        const now = Date.now();
        const elapsed = now - lastUpdateTime;
        const remainingMs = intervalMilliseconds - (elapsed % intervalMilliseconds);
        document.getElementById("timer").innerText = Math.ceil(remainingMs / 1000);
    }

    document.getElementById("refresh-btn").addEventListener("click", fetchLog);
    fetchLog();
    setInterval(fetchLog, intervalMilliseconds);
    setInterval(updateTimer, 1000);
});
</script>
{% endblock %}