{% extends "base.html" %}
{% block title %}Verarbeitungslog — IMAP Mail Filter{% endblock %}
{% block content %}
<h1>Verarbeitungslog</h1>

<div style="display:flex; gap:1rem; align-items:end; flex-wrap:wrap; margin-bottom:0.5rem;">
    <label style="margin-bottom:0;">
        Konto
        <select id="log-account" onchange="loadLogs()" style="margin-bottom:0;">
            <option value="">Alle Konten</option>
            {% for acc in accounts %}
            <option value="{{ acc.id }}">{{ acc.name }}</option>
            {% endfor %}
        </select>
    </label>
    <label style="margin-bottom:0;">
        Level
        <select id="log-level" onchange="loadLogs()" style="margin-bottom:0;">
            <option value="">Alle</option>
            <option value="success">Erfolg</option>
            <option value="info">Info</option>
            <option value="warning">Warnung</option>
            <option value="error">Fehler</option>
        </select>
    </label>
    <label style="margin-bottom:0; flex:1; min-width:200px;">
        Schnellsuche
        <input type="search" id="log-search" placeholder="überall suchen..." style="margin-bottom:0;" onkeydown="if(event.key==='Enter') loadLogs()">
    </label>
    <div role="group" style="margin-bottom:0;">
        <button class="outline small" onclick="loadLogs()">Suchen</button>
        <button class="outline small contrast" onclick="clearLogs()">Log leeren</button>
    </div>
    <label style="margin-bottom:0;">
        <input type="checkbox" id="auto-refresh" onchange="toggleAutoRefresh()" style="margin-bottom:0;">
        Auto-Refresh (5s)
    </label>
</div>

<details style="margin-bottom:1rem;">
    <summary>Erweiterte Suche (UND-verknüpft)</summary>
    <div class="grid" style="margin-top:0.5rem;">
        <label style="margin-bottom:0;">
            Betreff
            <input type="search" id="search-subject" placeholder="z.B. Rechnung" style="margin-bottom:0;" onkeydown="if(event.key==='Enter') loadLogs()">
        </label>
        <label style="margin-bottom:0;">
            Absender
            <input type="search" id="search-from" placeholder="z.B. shop@example.com" style="margin-bottom:0;" onkeydown="if(event.key==='Enter') loadLogs()">
        </label>
        <label style="margin-bottom:0;">
            Regel
            <input type="search" id="search-rule" placeholder="z.B. Newsletter" style="margin-bottom:0;" onkeydown="if(event.key==='Enter') loadLogs()">
        </label>
    </div>
    <div class="grid" style="margin-top:0.5rem;">
        <label style="margin-bottom:0;">
            Nachricht
            <input type="search" id="search-message" placeholder="z.B. Aktion ausgeführt" style="margin-bottom:0;" onkeydown="if(event.key==='Enter') loadLogs()">
        </label>
        <label style="margin-bottom:0;">
            Details
            <input type="search" id="search-details" placeholder="z.B. TREFFER" style="margin-bottom:0;" onkeydown="if(event.key==='Enter') loadLogs()">
        </label>
        <label style="margin-bottom:0;">
            Ordner
            <input type="search" id="search-folder" placeholder="z.B. INBOX" style="margin-bottom:0;" onkeydown="if(event.key==='Enter') loadLogs()">
        </label>
    </div>
    <div style="margin-top:0.5rem;">
        <button class="outline small" onclick="loadLogs()">Erweitert suchen</button>
        <button class="outline small contrast" onclick="clearAdvancedSearch()">Felder leeren</button>
    </div>
</details>

<div id="log-stats" style="margin-bottom:1rem;"></div>

<div id="log-container">
    <p aria-busy="true">Logs werden geladen...</p>
</div>

<div id="log-paging" style="display:flex; justify-content:center; gap:1rem; margin-top:1rem;"></div>
{% endblock %}

{% block scripts %}
<style>
.log-table {
    width: 100%;
    font-size: 0.9rem;
}
.log-table th, .log-table td {
    padding: 0.4rem 0.6rem;
    vertical-align: top;
}
.log-row { border-left: 3px solid transparent; }
.log-row[data-level="success"] { border-left-color: #28a745; }
.log-row[data-level="info"] { border-left-color: #17a2b8; }
.log-row[data-level="warning"] { border-left-color: #ffc107; }
.log-row[data-level="error"] { border-left-color: #dc3545; }

.log-level {
    display: inline-block;
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
}
.log-level-success { background: #d4edda; color: #155724; }
.log-level-info { background: #d1ecf1; color: #0c5460; }
.log-level-warning { background: #fff3cd; color: #856404; }
.log-level-error { background: #f8d7da; color: #721c24; }

.log-detail { font-size: 0.8rem; opacity: 0.7; }
.log-mail-info { font-size: 0.8rem; color: var(--pico-muted-color); }
</style>
<script>
let currentOffset = 0;
const PAGE_SIZE = 50;
let refreshTimer = null;

async function loadLogs(offset = 0) {
    currentOffset = offset;
    const accountId = document.getElementById('log-account').value;
    const level = document.getElementById('log-level').value;
    const container = document.getElementById('log-container');

    const search = document.getElementById('log-search').value.trim();
    const searchSubject = document.getElementById('search-subject').value.trim();
    const searchFrom = document.getElementById('search-from').value.trim();
    const searchRule = document.getElementById('search-rule').value.trim();
    const searchMessage = document.getElementById('search-message').value.trim();
    const searchDetails = document.getElementById('search-details').value.trim();
    const searchFolder = document.getElementById('search-folder').value.trim();

    let url = `/api/logs/?limit=${PAGE_SIZE}&offset=${offset}`;
    if (accountId) url += `&account_id=${accountId}`;
    if (level) url += `&level=${level}`;
    if (search) url += `&search=${encodeURIComponent(search)}`;
    if (searchSubject) url += `&search_subject=${encodeURIComponent(searchSubject)}`;
    if (searchFrom) url += `&search_from=${encodeURIComponent(searchFrom)}`;
    if (searchRule) url += `&search_rule=${encodeURIComponent(searchRule)}`;
    if (searchMessage) url += `&search_message=${encodeURIComponent(searchMessage)}`;
    if (searchDetails) url += `&search_details=${encodeURIComponent(searchDetails)}`;
    if (searchFolder) url += `&search_folder=${encodeURIComponent(searchFolder)}`;

    try {
        const resp = await fetch(url);
        const data = await resp.json();
        renderStats(data.total);
        renderLogs(data.logs);
        renderPaging(data.total, offset);
    } catch(e) {
        container.innerHTML = `<p>Fehler beim Laden: ${e.message}</p>`;
    }
}

function renderStats(total) {
    document.getElementById('log-stats').innerHTML = `<small>${total} Einträge gesamt</small>`;
}

function renderLogs(logs) {
    const container = document.getElementById('log-container');
    if (!logs.length) {
        container.innerHTML = '<article><p>Keine Log-Einträge vorhanden.</p></article>';
        return;
    }

    let html = `<table class="log-table">
        <thead><tr>
            <th style="width:140px;">Zeit</th>
            <th style="width:60px;">Level</th>
            <th style="width:120px;">Konto</th>
            <th>Nachricht</th>
            <th style="width:120px;">Regel</th>
        </tr></thead><tbody>`;

    for (const log of logs) {
        const time = log.created_at ? new Date(log.created_at).toLocaleString('de-DE', {
            day: '2-digit', month: '2-digit', year: '2-digit',
            hour: '2-digit', minute: '2-digit', second: '2-digit'
        }) : '';

        const levelClass = `log-level-${log.level}`;
        const levelLabel = {success: 'OK', info: 'Info', warning: 'Warn', error: 'Fehler'}[log.level] || log.level;

        let message = escapeHtml(log.message);
        if (log.mail_subject || log.mail_from) {
            message += `<div class="log-mail-info">`;
            if (log.mail_from) message += `Von: ${escapeHtml(log.mail_from)}<br>`;
            if (log.mail_subject) message += `Betreff: ${escapeHtml(log.mail_subject)}`;
            message += `</div>`;
        }
        if (log.details) {
            message += `<div class="log-detail">${escapeHtml(log.details)}</div>`;
        }

        html += `<tr class="log-row" data-level="${log.level}">
            <td><small>${time}</small></td>
            <td><span class="log-level ${levelClass}">${levelLabel}</span></td>
            <td><small>${escapeHtml(log.account_name || '')}</small></td>
            <td>${message}</td>
            <td><small>${escapeHtml(log.rule_name || '')}</small></td>
        </tr>`;
    }

    html += '</tbody></table>';
    container.innerHTML = html;
}

function renderPaging(total, offset) {
    const paging = document.getElementById('log-paging');
    if (total <= PAGE_SIZE) {
        paging.innerHTML = '';
        return;
    }
    const page = Math.floor(offset / PAGE_SIZE) + 1;
    const totalPages = Math.ceil(total / PAGE_SIZE);
    let html = '';
    if (offset > 0) {
        html += `<button class="outline small" onclick="loadLogs(${offset - PAGE_SIZE})">Neuere</button>`;
    }
    html += `<small>Seite ${page} / ${totalPages}</small>`;
    if (offset + PAGE_SIZE < total) {
        html += `<button class="outline small" onclick="loadLogs(${offset + PAGE_SIZE})">Ältere</button>`;
    }
    paging.innerHTML = html;
}

async function clearLogs() {
    if (!confirm('Log wirklich leeren?')) return;
    const accountId = document.getElementById('log-account').value;
    let url = '/api/logs/';
    if (accountId) url += `?account_id=${accountId}`;
    await fetch(url, {method: 'DELETE'});
    loadLogs();
}

function toggleAutoRefresh() {
    if (document.getElementById('auto-refresh').checked) {
        refreshTimer = setInterval(() => loadLogs(currentOffset), 5000);
    } else {
        clearInterval(refreshTimer);
        refreshTimer = null;
    }
}

function escapeHtml(text) {
    const div = document.createElement('div');
    div.textContent = text;
    return div.innerHTML;
}

function clearAdvancedSearch() {
    document.getElementById('search-subject').value = '';
    document.getElementById('search-from').value = '';
    document.getElementById('search-rule').value = '';
    document.getElementById('search-message').value = '';
    document.getElementById('search-details').value = '';
    document.getElementById('search-folder').value = '';
    loadLogs();
}

// Initial load
loadLogs();
</script>
{% endblock %}