const jobsTable = document.getElementById('jobsTable');
const jobModal = new bootstrap.Modal(document.getElementById('jobModal'));
let currentUser = null;
let jobs = [];
let editMode = false;

initPage({ onAuth: (user) => {
    currentUser = user;
    if (!user || user.role !== 'admin') {
        const btn = document.getElementById('btnAddJob');
        btn.disabled = true;
        btn.title = 'Nur Lesezugriff';
    }
    loadJobs();
} });

// Template variables available in message jobs
const MSG_VARS = [
    { key: '{time}',         label: '{time}',         desc: 'Uhrzeit (HH:MM)' },
    { key: '{date}',         label: '{date}',         desc: 'Datum (TT.MM.JJJJ)' },
    { key: '{datetime}',     label: '{datetime}',     desc: 'Datum + Uhrzeit' },
    { key: '{weekday}',      label: '{weekday}',      desc: 'Wochentag (Montag…)' },
    { key: '{nodes}',        label: '{nodes}',        desc: 'Anzahl Nodes gesamt' },
    { key: '{nodes_24h}',    label: '{nodes_24h}',    desc: 'Aktive Nodes (24h)' },
    { key: '{nodes_online}', label: '{nodes_online}', desc: 'Nodes online (< 15 Min)' },
    { key: '{version}',      label: '{version}',      desc: 'Bot-Version' },
];

// Type toggle label + variable hints
function updateCommandLabel() {
    const isMsg = document.getElementById('jobType').value === 'message';
    document.getElementById('jobCommandLabel').textContent = isMsg ? 'Nachricht' : 'Kommando';
    document.getElementById('jobCommand').placeholder = isMsg ? 'Hallo Mesh! Heute ist {weekday}, {time} Uhr.' : '/weather';
    const hints = document.getElementById('varHints');
    const badges = document.getElementById('varBadges');
    if (isMsg) {
        badges.innerHTML = MSG_VARS.map(v =>
            `<span class="badge bg-secondary-subtle text-secondary-emphasis border border-secondary-subtle me-1 mb-1" role="button" title="${escapeHtml(v.desc)}" data-var="${escapeHtml(v.key)}" style="cursor:pointer;font-size:.7rem">${escapeHtml(v.label)}</span>`
        ).join('');
        hints.classList.remove('d-none');
    } else {
        hints.classList.add('d-none');
    }
}

document.getElementById('varBadges').addEventListener('click', (e) => {
    const badge = e.target.closest('[data-var]');
    if (!badge) return;
    const input = document.getElementById('jobCommand');
    const start = input.selectionStart;
    const end = input.selectionEnd;
    const val = input.value;
    input.value = val.slice(0, start) + badge.dataset.var + val.slice(end);
    const pos = start + badge.dataset.var.length;
    input.setSelectionRange(pos, pos);
    input.focus();
});

document.getElementById('jobType').addEventListener('change', updateCommandLabel);

// WebSocket for live updates
function connectWebSocket() {
    const proto = location.protocol === 'https:' ? 'wss:' : 'ws:';
    const ws = new WebSocket(`${proto}//${location.host}/ws`);

    ws.onmessage = (event) => {
        const msg = JSON.parse(event.data);
        if (msg.type === 'scheduler_update') {
            jobs = msg.data;
            renderJobs();
        }
    };

    ws.onclose = () => {
        setTimeout(connectWebSocket, 3000);
    };

    ws.onerror = () => { ws.close(); };
}

// Load jobs
async function loadJobs() {
    try {
        const resp = await fetch('/api/scheduler/jobs');
        jobs = await resp.json();
        renderJobs();
    } catch (e) {
        jobsTable.innerHTML = '<tr><td colspan="7" class="text-center text-danger py-3">Fehler beim Laden</td></tr>';
    }
}

function renderJobs() {
    if (jobs.length === 0) {
        jobsTable.innerHTML = '<tr><td colspan="8" class="text-center text-body-secondary py-3">Keine Jobs konfiguriert</td></tr>';
        return;
    }
    const isAdmin = currentUser && currentUser.role === 'admin';
    jobsTable.innerHTML = jobs.map(job => {
        const statusClass = job.enabled ? 'text-success' : 'text-body-secondary';
        const statusIcon = job.enabled ? 'bi-check-circle-fill' : 'bi-pause-circle';
        const statusText = job.enabled ? 'Aktiv' : 'Inaktiv';
        const jobType = job.type === 'message' ? 'Nachricht' : 'Kommando';
        const typeBadge = job.type === 'message' ? 'bg-warning text-dark' : 'bg-info text-white';
        const statusCell = isAdmin
            ? `<span class="${statusClass} cursor-pointer" role="button" onclick="toggleJob('${escapeHtml(job.name)}')"><i class="bi ${statusIcon} me-1"></i>${statusText}</span>`
            : `<span class="${statusClass}"><i class="bi ${statusIcon} me-1"></i>${statusText}</span>`;
        const actions = isAdmin
            ? `<button class="btn btn-outline-warning btn-sm py-0 px-1 me-1" onclick="editJob('${escapeHtml(job.name)}')" title="Bearbeiten"><i class="bi bi-pencil"></i></button>
               <button class="btn btn-outline-danger btn-sm py-0 px-1" onclick="deleteJob('${escapeHtml(job.name)}')" title="Loeschen"><i class="bi bi-trash"></i></button>`
            : `<span class="badge bg-secondary-subtle text-secondary-emphasis" style="font-size:.65rem">Nur Lesezugriff</span>`;
        return `<tr>
            <td class="fw-semibold">${escapeHtml(job.name || '')}</td>
            <td class="text-body-secondary">${escapeHtml(job.description || '')}</td>
            <td><span class="badge ${typeBadge} bg-opacity-75">${jobType}</span></td>
            <td><code>${escapeHtml(job.command || '')}</code></td>
            <td><code>${escapeHtml(job.cron || '')}</code></td>
            <td class="text-center">${job.channel != null ? job.channel : 0}</td>
            <td class="text-center">${statusCell}</td>
            <td class="text-end">${actions}</td>
        </tr>`;
    }).join('');
}

async function toggleJob(name) {
    const job = jobs.find(j => j.name === name);
    if (!job) return;
    try {
        const resp = await fetch(`/api/scheduler/jobs/${encodeURIComponent(name)}`, {
            method: 'PUT',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ enabled: !job.enabled })
        });
        if (resp.ok) {
            jobs = await resp.json();
            renderJobs();
        }
    } catch (e) {
        console.error('Toggle failed:', e);
    }
}

function editJob(name) {
    const job = jobs.find(j => j.name === name);
    if (!job) return;
    editMode = true;
    document.getElementById('jobModalTitle').textContent = 'Job bearbeiten';
    document.getElementById('jobOriginalName').value = job.name;
    document.getElementById('jobName').value = job.name;
    document.getElementById('jobDescription').value = job.description || '';
    document.getElementById('jobType').value = job.type || 'command';
    updateCommandLabel();
    document.getElementById('jobCommand').value = job.command || '';
    document.getElementById('jobCron').value = job.cron || '';
    document.getElementById('jobChannel').value = job.channel != null ? job.channel : 0;
    document.getElementById('jobEnabled').checked = !!job.enabled;
    jobModal.show();
}

async function deleteJob(name) {
    if (!confirm(`Job "${name}" wirklich loeschen?`)) return;
    try {
        const resp = await fetch(`/api/scheduler/jobs/${encodeURIComponent(name)}`, {
            method: 'DELETE'
        });
        if (resp.ok) {
            jobs = await resp.json();
            renderJobs();
        }
    } catch (e) {
        console.error('Delete failed:', e);
    }
}

// New job button
document.getElementById('btnAddJob').addEventListener('click', () => {
    editMode = false;
    document.getElementById('jobModalTitle').textContent = 'Neuer Job';
    document.getElementById('jobOriginalName').value = '';
    document.getElementById('jobForm').reset();
    document.getElementById('jobType').value = 'command';
    updateCommandLabel();
    document.getElementById('jobChannel').value = 0;
    jobModal.show();
});

// Save job
document.getElementById('btnSaveJob').addEventListener('click', async () => {
    const form = document.getElementById('jobForm');
    if (!form.checkValidity()) {
        form.reportValidity();
        return;
    }

    const jobData = {
        name: document.getElementById('jobName').value.trim(),
        description: document.getElementById('jobDescription').value.trim(),
        type: document.getElementById('jobType').value,
        command: document.getElementById('jobCommand').value.trim(),
        cron: document.getElementById('jobCron').value.trim(),
        channel: parseInt(document.getElementById('jobChannel').value) || 0,
        enabled: document.getElementById('jobEnabled').checked
    };

    try {
        let resp;
        if (editMode) {
            const originalName = document.getElementById('jobOriginalName').value;
            resp = await fetch(`/api/scheduler/jobs/${encodeURIComponent(originalName)}`, {
                method: 'PUT',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify(jobData)
            });
        } else {
            resp = await fetch('/api/scheduler/jobs', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify(jobData)
            });
        }

        if (resp.ok) {
            jobs = await resp.json();
            renderJobs();
            jobModal.hide();
        }
    } catch (e) {
        console.error('Save failed:', e);
    }
});

connectWebSocket();