/* ESPILON Honeypot Dashboard — Events Tab + Attacker Modal */

import { S } from './state.js';
import { $id, escHtml, formatTime, sevClass, layerForType, layerColor, countryFlag, debounce, emptyState, skeletonRows } from './utils.js';
import { api } from './api.js';
import { showToast, closeDetail, closeModal } from './ui.js';

// ── Events Tab ──────────────────────────────────────────────

const EVENTS_PAGE_SIZE = 50;
let _eventsHasMore = true;

export function renderEvents() {
    const sb = $id('search-bar');
    if (sb) sb.style.display = '';
    const ml = $id('main-list');
    if (!ml) return;
    if (!S.events || !S.events.length) {
        ml.innerHTML = emptyState('\uD83D\uDCCA', 'No events recorded', 'Events will appear here as they are detected');
        return;
    }
    let html = '';
    for (let i = 0; i < S.events.length; i++) {
        html += buildEventRow(S.events[i]);
    }
    if (_eventsHasMore) {
        html += '<div class="ev-load-more"><button class="btn btn-sm" data-action="load-more-events">Load More</button></div>';
    }
    ml.innerHTML = html;
}

export function buildEventRow(evt) {
    const layer = layerForType(evt.event_type);
    let detail = evt.detail || '';
    if (detail.length > 80) detail = detail.substring(0, 80) + '\u2026';
    let mitre = '';
    if (evt.mitre_techniques) {
        mitre = buildMitreBadges(evt.mitre_techniques);
    }
    const safeId = parseInt(evt.id) || 0;
    return '<div class="ev-row" data-action="detail" data-id="' + safeId + '">'
        + '<div class="ev-row-line1">'
            + '<span class="ev-time">' + formatTime(evt.timestamp) + '</span>'
            + '<span class="ev-layer" style="color:' + layerColor(layer) + '">[' + layer + ']</span>'
            + '<span class="ev-service">' + escHtml(evt.service || '') + '</span>'
            + '<span class="ev-type">' + escHtml(evt.event_type) + '</span>'
            + '<span class="ev-severity ' + sevClass(evt.severity) + '">' + escHtml(evt.severity) + '</span>'
        + '</div>'
        + '<div class="ev-row-line2">'
            + '<span class="ev-ip" data-action="attacker" data-ip="' + escHtml(evt.src_ip) + '">' + escHtml(evt.src_ip) + '</span>'
            + '<span class="ev-detail">' + escHtml(detail) + '</span>'
            + '<span class="ev-mitre">' + mitre + '</span>'
        + '</div>'
    + '</div>';
}

export function buildMitreBadges(mitreJson) {
    let techniques;
    if (!mitreJson) return '';
    try {
        if (typeof mitreJson === 'string') {
            techniques = JSON.parse(mitreJson);
        } else {
            techniques = mitreJson;
        }
    } catch (e) {
        return '';
    }
    if (!techniques || !techniques.length) return '';
    let html = '';
    for (let i = 0; i < techniques.length; i++) {
        const t = techniques[i];
        const tid = typeof t === 'string' ? t : (t.technique_id || t.id || t);
        const name = typeof t === 'object' ? (t.name || t.technique_name || '') : '';
        const tactic = typeof t === 'object' ? (t.tactic || '') : '';
        let title = tid;
        if (name) title += ' - ' + name;
        if (tactic) title += ' (' + tactic + ')';
        html += '<span class="mitre-tag" title="' + escHtml(title) + '">' + escHtml(String(tid)) + '</span>';
    }
    return html;
}

export function prependEventRow(evt) {
    if (S.tab !== 'timeline') return;
    const ml = $id('main-list');
    if (!ml) return;
    const empty = ml.querySelector('.empty-state');
    if (empty) ml.innerHTML = '';
    const wrapper = document.createElement('div');
    wrapper.innerHTML = buildEventRow(evt);
    const el = wrapper.firstChild;
    if (el) {
        el.classList.add('flash');
        ml.insertBefore(el, ml.firstChild);
        setTimeout(function() { el.classList.remove('flash'); }, 2000);
    }
}

// ── Search & Filters ────────────────────────────────────────

const _debouncedFilter = debounce(() => applyFilters(), 300);

export function onSearchKey(e) {
    if (!e) { applyFilters(); return; }
    if (e.key === 'Enter') applyFilters();
    else if (e.key === 'Escape') { e.target.value = ''; applyFilters(); }
    else _debouncedFilter();
}

function _buildFilterParams() {
    const params = new URLSearchParams();
    const q = ($id('search-input')?.value || '').trim();
    const type = $id('f-type')?.value;
    const sev = $id('f-sev')?.value;
    const service = $id('f-service')?.value;
    const ip = ($id('f-ip')?.value || '').trim();
    if (q) params.set('q', q);
    if (type) params.set('type', type);
    if (sev) params.set('severity', sev);
    if (service) params.set('service', service);
    if (ip) params.set('ip', ip);
    return params;
}

export async function applyFilters() {
    const params = _buildFilterParams();
    params.set('limit', String(EVENTS_PAGE_SIZE));
    const data = await api('/api/honeypot/search?' + params.toString());
    if (data) {
        S.events = data.events || [];
        _eventsHasMore = S.events.length >= EVENTS_PAGE_SIZE;
        renderEvents();
    }
}

export async function loadMoreEvents() {
    const params = _buildFilterParams();
    params.set('limit', String(EVENTS_PAGE_SIZE));
    params.set('offset', String(S.events.length));
    const data = await api('/api/honeypot/search?' + params.toString());
    if (data && data.events && data.events.length) {
        S.events.push(...data.events);
        _eventsHasMore = data.events.length >= EVENTS_PAGE_SIZE;
        renderEvents();
    } else {
        _eventsHasMore = false;
        /* Remove the Load More button */
        const btn = document.querySelector('[data-action="load-more-events"]');
        if (btn && btn.parentElement) btn.parentElement.remove();
    }
}

export function toggleFilters() {
    $id('filter-panel')?.classList.toggle('active');
}

// ── Event Detail Panel ──────────────────────────────────────

export async function showDetail(eventId) {
    const panel = $id('detail-panel'), body = $id('detail-body');
    if (!panel || !body) return;
    panel.classList.add('open');
    body.innerHTML = skeletonRows(6);
    const evt = await api('/api/honeypot/events/' + eventId);
    if (!evt) { body.innerHTML = '<p class="text-error">Failed to load event</p>'; return; }
    let html = '';
    // Connection
    html += '<div class="detail-group"><h4 class="detail-group-title">Connection</h4><div class="detail-fields">';
    if (evt.src_ip) html += '<div class="detail-field detail-field-col"><span class="detail-label">Source IP</span><span class="detail-value clickable" data-action="attacker" data-ip="' + escHtml(evt.src_ip) + '">' + escHtml(evt.src_ip) + '</span></div>';
    if (evt.src_port) html += '<div class="detail-field detail-field-col"><span class="detail-label">Src Port</span><span class="detail-value">' + escHtml(String(evt.src_port)) + '</span></div>';
    if (evt.dst_port) html += '<div class="detail-field detail-field-col"><span class="detail-label">Dst Port</span><span class="detail-value">' + escHtml(String(evt.dst_port)) + '</span></div>';
    if (evt.service) html += '<div class="detail-field detail-field-col"><span class="detail-label">Service</span><span class="detail-value">' + escHtml(evt.service) + '</span></div>';
    if (evt.session_id) html += '<div class="detail-field detail-field-col"><span class="detail-label">Session</span><span class="detail-value">' + escHtml(evt.session_id) + '</span></div>';
    html += '</div></div>';
    // Event
    html += '<div class="detail-group"><h4 class="detail-group-title">Event</h4><div class="detail-fields">';
    html += '<div class="detail-field detail-field-col"><span class="detail-label">Type</span><span class="detail-value">' + escHtml(evt.event_type) + '</span></div>';
    html += '<div class="detail-field detail-field-col"><span class="detail-label">Severity</span><span class="detail-value ' + sevClass(evt.severity) + '">' + escHtml(evt.severity) + '</span></div>';
    html += '<div class="detail-field detail-field-col"><span class="detail-label">Time</span><span class="detail-value">' + formatTime(evt.timestamp) + '</span></div>';
    if (evt.device_id) html += '<div class="detail-field detail-field-col"><span class="detail-label">Device</span><span class="detail-value">' + escHtml(evt.device_id) + '</span></div>';
    if (evt.detail) html += '<div class="detail-field detail-field-full"><span class="detail-label">Detail</span><span class="detail-value">' + escHtml(evt.detail) + '</span></div>';
    html += '</div></div>';
    // Auth
    if (evt.username) {
        html += '<div class="detail-group"><h4 class="detail-group-title">Authentication</h4><div class="detail-fields">';
        html += '<div class="detail-field detail-field-col"><span class="detail-label">Username</span><span class="detail-value">' + escHtml(evt.username) + '</span></div>';
        if (evt.password) html += '<div class="detail-field detail-field-col"><span class="detail-label">Password</span><span class="detail-value">' + escHtml(evt.password) + '</span></div>';
        html += '</div></div>';
    }
    // Payload
    if (evt.command || evt.url || evt.path) {
        html += '<div class="detail-group"><h4 class="detail-group-title">Payload</h4><div class="detail-fields">';
        if (evt.command) html += '<div class="detail-field detail-field-full"><span class="detail-label">Command</span><span class="detail-value text-accent">' + escHtml(evt.command) + '</span></div>';
        if (evt.url) html += '<div class="detail-field detail-field-full"><span class="detail-label">URL</span><span class="detail-value">' + escHtml(evt.url) + '</span></div>';
        if (evt.path) html += '<div class="detail-field detail-field-col"><span class="detail-label">Path</span><span class="detail-value">' + escHtml(evt.path) + '</span></div>';
        html += '</div></div>';
    }
    // Tags
    if (evt.malware_tag || evt.os_tag) {
        html += '<div class="detail-group"><h4 class="detail-group-title">Tags</h4><div class="detail-fields">';
        if (evt.malware_tag) html += '<span class="mitre-tag mitre-tag-malware">' + escHtml(evt.malware_tag) + '</span>';
        if (evt.os_tag) html += '<span class="mitre-tag">' + escHtml(evt.os_tag) + '</span>';
        html += '</div></div>';
    }
    // MITRE
    if (evt.mitre_techniques) {
        html += '<div class="detail-group"><h4 class="detail-group-title">MITRE ATT&amp;CK</h4><div class="detail-fields">';
        html += buildMitreBadges(evt.mitre_techniques);
        html += '</div></div>';
    }
    // Related
    if (evt.related && evt.related.length) {
        html += '<div class="detail-group"><h4 class="detail-group-title">Related Events</h4>';
        evt.related.slice(0, 10).forEach(r => {
            html += '<div class="ev-row" data-action="detail" data-id="' + (parseInt(r.id) || 0) + '">#' + (parseInt(r.id) || 0) + ' ' + escHtml(r.event_type) + ' \u2014 ' + escHtml(r.severity) + ' \u2014 ' + formatTime(r.timestamp) + '</div>';
        });
        html += '</div>';
    }
    // Copy JSON
    window._detailEvtJson = JSON.stringify(evt, null, 2);
    html += '<div class="detail-copy-row"><button class="btn btn-sm btn-ghost" data-action="copy-json">Copy JSON</button></div>';
    body.innerHTML = html;
}

// ── Export ───────────────────────────────────────────────────

export function exportData(format) {
    const params = new URLSearchParams();
    params.set('format', format);
    const q = ($id('search-input')?.value || '').trim();
    if (q) params.set('q', q);
    if ($id('f-type')?.value) params.set('type', $id('f-type').value);
    if ($id('f-sev')?.value) params.set('severity', $id('f-sev').value);
    if ($id('f-service')?.value) params.set('service', $id('f-service').value);
    const ip = ($id('f-ip')?.value || '').trim();
    if (ip) params.set('ip', ip);
    window.open('/api/honeypot/export?' + params.toString());
}

// ── Attacker Modal ──────────────────────────────────────────

export async function showAttackerModal(ip) {
    const modal = $id('attacker-modal'), body = $id('modal-body');
    if (!modal || !body) return;
    modal.classList.add('open');
    $id('modal-title').textContent = ip;
    body.innerHTML = skeletonRows(5);
    const data = await api('/api/honeypot/attacker/' + ip);
    if (!data) { body.innerHTML = '<p>Not found</p>'; return; }
    const credCount = data.credentials?.length || 0;
    const cmdCount = data.commands?.length || 0;
    const sessCount = data.sessions?.length || 0;
    let html = '';
    // Header badges
    html += '<div class="modal-header-badges">';
    html += '<span class="modal-header-ip">' + escHtml(data.ip) + '</span>';
    if (data.vendor) html += '<span class="modal-header-vendor">' + escHtml(data.vendor) + '</span>';
    if (data.country_code) html += '<span class="modal-header-country">' + countryFlag(data.country_code) + ' ' + escHtml(data.country || data.country_code) + '</span>';
    html += '</div>';
    // Stats grid
    html += '<div class="modal-stat-grid">';
    [{v: data.total_events || 0, l: 'Events'}, {v: credCount, l: 'Credentials'}, {v: cmdCount, l: 'Commands'}, {v: sessCount, l: 'Sessions'}].forEach(s => {
        html += '<div class="modal-stat-card"><div class="modal-stat-val">' + s.v + '</div><div class="modal-stat-label">' + s.l + '</div></div>';
    });
    html += '</div>';
    // Geo
    if (data.is_private) {
        html += '<div class="modal-info-block"><div class="modal-info-label">Network</div><div class="modal-info-row">Private Network (LAN)</div>';
        if (data.vendor) html += '<div class="modal-info-row">Vendor: ' + escHtml(data.vendor) + '</div>';
        html += '</div>';
    } else if (data.country || data.city || data.isp) {
        html += '<div class="modal-info-block"><div class="modal-info-label">Geo / Threat Intel</div>';
        if (data.country) html += '<div class="modal-info-row">' + countryFlag(data.country_code) + ' ' + escHtml(data.country) + '</div>';
        if (data.city) html += '<div class="modal-info-row">City: ' + escHtml(data.city) + '</div>';
        if (data.isp) html += '<div class="modal-info-row">ISP: ' + escHtml(data.isp) + '</div>';
        if (data.vendor) html += '<div class="modal-info-row">Vendor: ' + escHtml(data.vendor) + '</div>';
        html += '</div>';
    }
    // Tabs
    const defaultTab = credCount > 0 ? 'creds' : 'events';
    html += '<div class="modal-tabs-bar">';
    ['creds', 'cmds', 'sess', 'events'].forEach(t => {
        const labels = {creds: 'Credentials (' + credCount + ')', cmds: 'Commands (' + cmdCount + ')', sess: 'Sessions (' + sessCount + ')', events: 'Events'};
        html += '<button class="modal-tab-btn' + (t === defaultTab ? ' active' : '') + '" data-tab="' + t + '" data-action="modal-tab">' + labels[t] + '</button>';
    });
    html += '</div>';
    // Creds panel
    html += '<div class="modal-tab-panel" data-tab="creds" style="display:' + (defaultTab === 'creds' ? '' : 'none') + '">';
    if (credCount) {
        html += '<table class="ov-table"><thead><tr><th>User</th><th>Pass</th><th>Svc</th><th>Time</th></tr></thead><tbody>';
        data.credentials.forEach(c => {
            html += '<tr><td class="font-mono">' + escHtml(c.username || '') + '</td><td class="font-mono">' + escHtml(c.password || '') + '</td><td>' + escHtml(c.service || '') + '</td><td>' + formatTime(c.timestamp) + '</td></tr>';
        });
        html += '</tbody></table>';
    } else html += emptyState('\uD83D\uDD12', 'No credentials', '');
    html += '</div>';
    // Cmds panel
    html += '<div class="modal-tab-panel" data-tab="cmds" style="display:' + (defaultTab === 'cmds' ? '' : 'none') + '">';
    if (cmdCount) {
        html += '<table class="ov-table"><thead><tr><th>Command</th><th>Svc</th><th>Time</th></tr></thead><tbody>';
        data.commands.forEach(c => {
            html += '<tr><td class="font-mono text-accent">' + escHtml(c.command || '') + '</td><td>' + escHtml(c.service || '') + '</td><td>' + formatTime(c.timestamp) + '</td></tr>';
        });
        html += '</tbody></table>';
    } else html += emptyState('\uD83D\uDCBB', 'No commands', '');
    html += '</div>';
    // Sessions panel
    html += '<div class="modal-tab-panel" data-tab="sess" style="display:' + (defaultTab === 'sess' ? '' : 'none') + '">';
    if (sessCount) {
        data.sessions.forEach(s => {
            html += '<div class="modal-session-card" data-action="replay" data-session="' + escHtml(s.session_id) + '" data-ip="' + escHtml(data.ip) + '" data-service="' + escHtml(s.service || '') + '">'
                + '<div class="modal-session-card-top"><span class="fw-600">' + escHtml(s.service || '') + ' session</span><span class="' + sevClass(s.max_sev) + '">' + (s.event_count || 0) + ' events</span></div>'
                + '<div class="modal-session-card-time">' + formatTime(s.start) + ' \u2014 ' + formatTime(s.end) + '</div></div>';
        });
    } else html += emptyState('\uD83D\uDD17', 'No sessions', '');
    html += '</div>';
    // Events panel
    html += '<div class="modal-tab-panel" data-tab="events" style="display:' + (defaultTab === 'events' ? '' : 'none') + '">';
    if (data.events?.length) {
        data.events.slice(0, 20).forEach(ev => {
            html += '<div class="ev-row" data-action="detail" data-id="' + (parseInt(ev.id) || 0) + '">'
                + '<span class="' + sevClass(ev.severity) + ' modal-ev-sev">' + escHtml(ev.severity || '') + '</span>'
                + '<span class="modal-ev-type">' + escHtml(ev.event_type || '') + ' ' + escHtml((ev.detail || '').substring(0, 50)) + '</span>'
                + '<span class="modal-ev-time">' + formatTime(ev.timestamp) + '</span></div>';
        });
    } else html += emptyState('\uD83D\uDCCB', 'No events', '');
    html += '</div>';
    body.innerHTML = html;
}

export function switchModalTab(tabName) {
    document.querySelectorAll('.modal-tab-btn').forEach(b => {
        const active = b.dataset.tab === tabName;
        b.classList.toggle('active', active);
    });
    document.querySelectorAll('.modal-tab-panel').forEach(p => {
        p.style.display = p.dataset.tab === tabName ? '' : 'none';
    });
}