const API_BASE = '';
let allTickets = [];
let filteredTickets = [];
let customFieldsMap = [];
let lastUsername = '';
let lastApiToken = '';
let currentGanttView = 'month'; 
let isGanttExpanded = false;
let currentSortCol = null;
let isAsc = true;


// --- JIRA STATUS CONFIG & MAPPING ---
const STATUS_DEFINITIONS = {
    'Opportunity': {
        label: 'Opportunity',
        cssClass: 's-opportunity',
        dark: {
            color: '#c084fc',
            bg: 'rgba(192, 132, 252, 0.16)',
            border: '#a855f7',
            badgeBg: '#9333ea',
            badgeText: '#ffffff'
        },
        light: {
            color: '#6d28d9',
            bg: '#f5f3ff',
            border: '#7c3aed',
            badgeBg: '#7c3aed',
            badgeText: '#ffffff'
        },
        drawioColor: '#9333ea'
    },
    'Delayed': {
        label: 'Delayed',
        cssClass: 's-delayed',
        dark: {
            color: '#94a3b8',
            bg: 'rgba(148, 163, 184, 0.16)',
            border: '#64748b',
            badgeBg: '#475569',
            badgeText: '#ffffff'
        },
        light: {
            color: '#334155',
            bg: '#f1f5f9',
            border: '#64748b',
            badgeBg: '#475569',
            badgeText: '#ffffff'
        },
        drawioColor: '#64748b'
    },
    'To be Analysed': {
        label: 'To be Analysed',
        cssClass: 's-analyse',
        dark: {
            color: '#fbbf24',
            bg: 'rgba(251, 191, 36, 0.16)',
            border: '#f59e0b',
            badgeBg: '#d97706',
            badgeText: '#ffffff'
        },
        light: {
            color: '#92400e',
            bg: '#fffbeb',
            border: '#d97706',
            badgeBg: '#b45309',
            badgeText: '#ffffff'
        },
        drawioColor: '#d97706'
    },
    'Analysed': {
        label: 'Analysed',
        cssClass: 's-analysed',
        dark: {
            color: '#22d3ee',
            bg: 'rgba(34, 211, 238, 0.16)',
            border: '#06b6d4',
            badgeBg: '#0891b2',
            badgeText: '#ffffff'
        },
        light: {
            color: '#0e7490',
            bg: '#ecfeff',
            border: '#0891b2',
            badgeBg: '#0e7490',
            badgeText: '#ffffff'
        },
        drawioColor: '#0891b2'
    },
    'Project Ongoing': {
        label: 'Project Ongoing',
        cssClass: 's-ongoing',
        dark: {
            color: '#60a5fa',
            bg: 'rgba(96, 165, 250, 0.20)',
            border: '#3b82f6',
            badgeBg: '#2563eb',
            badgeText: '#ffffff'
        },
        light: {
            color: '#1e40af',
            bg: '#eff6ff',
            border: '#2563eb',
            badgeBg: '#1d4ed8',
            badgeText: '#ffffff'
        },
        drawioColor: '#2563eb'
    },
    'Rejected': {
        label: 'Rejected',
        cssClass: 's-rejected',
        dark: {
            color: '#f87171',
            bg: 'rgba(248, 113, 113, 0.18)',
            border: '#ef4444',
            badgeBg: '#dc2626',
            badgeText: '#ffffff'
        },
        light: {
            color: '#991b1b',
            bg: '#fef2f2',
            border: '#dc2626',
            badgeBg: '#dc2626',
            badgeText: '#ffffff'
        },
        drawioColor: '#dc2626'
    },
    'Done': {
        label: 'Done',
        cssClass: 's-done',
        dark: {
            color: '#34d399',
            bg: 'rgba(52, 211, 153, 0.18)',
            border: '#10b981',
            badgeBg: '#059669',
            badgeText: '#ffffff'
        },
        light: {
            color: '#065f46',
            bg: '#ecfdf5',
            border: '#059669',
            badgeBg: '#047857',
            badgeText: '#ffffff'
        },
        drawioColor: '#059669'
    }
};

function mapJiraStatus(rawStatus) {
    if (!rawStatus) return 'Opportunity';
    const s = String(rawStatus).trim().toLowerCase();

    // "Resolved" and "Closed" => DONE
    if (s.includes('done') || s.includes('resolv') || s.includes('clos') || s.includes('ferm') || s.includes('termin') || s.includes('rsolu')) {
        return 'Done';
    }
    // "Rejected" => Rejected
    if (s.includes('reject') || s.includes('rejet') || s.includes('refus') || s.includes('abandon')) {
        return 'Rejected';
    }
    // "In Progress" => Project Ongoing
    if (s.includes('progress') || s.includes('en cours') || s.includes('ongoing') || s.includes('review') || s.includes('dev')) {
        return 'Project Ongoing';
    }
    // "On Hold" => Analysed
    if (s.includes('hold') || s.includes('analysé') || s.includes('analysed') || s.includes('attente')) {
        return 'Analysed';
    }
    // "Open" and "SPQI" => To be Analysed
    if (s === 'open' || s.includes('spqi') || s.includes('ouvert') || s.includes('to analyse') || s.includes('to be analysed')) {
        return 'To be Analysed';
    }
    // "Delayed" => Delayed
    if (s.includes('delay') || s.includes('retard') || s.includes('reporté')) {
        return 'Delayed';
    }
    // "New" and "Reopened" => Opportunity
    if (s.includes('new') || s.includes('reopen') || s.includes('nouveau') || s.includes('opportunit') || s.includes('backlog')) {
        return 'Opportunity';
    }

    return 'Opportunity';
}

function getStatusThemeConfig(mappedStatus) {
    const isLight = document.documentElement.getAttribute('data-theme') === 'light';
    const def = STATUS_DEFINITIONS[mappedStatus] || STATUS_DEFINITIONS['Opportunity'];
    return isLight ? def.light : def.dark;
}

function getStatusClass(s) {
    const mapped = mapJiraStatus(s);
    const def = STATUS_DEFINITIONS[mapped];
    return def ? def.cssClass : 's-opportunity';
}

// --- THEME MANAGEMENT (LIGHT / DARK) ---
function initTheme() {
    const savedTheme = localStorage.getItem('jira_extractor_theme') || 'dark';
    setTheme(savedTheme, false);
}

function toggleTheme() {
    const currentTheme = document.documentElement.getAttribute('data-theme') === 'light' ? 'light' : 'dark';
    const newTheme = currentTheme === 'light' ? 'dark' : 'light';
    setTheme(newTheme, true);
}

function setTheme(theme, withToast = false) {
    document.documentElement.setAttribute('data-theme', theme);
    localStorage.setItem('jira_extractor_theme', theme);

    const icon = document.getElementById('themeIcon');
    const label = document.getElementById('themeLabel');
    if (icon && label) {
        if (theme === 'light') {
            icon.className = 'fa-solid fa-moon';
            label.textContent = 'Dark mode';
        } else {
            icon.className = 'fa-solid fa-sun';
            label.textContent = 'Light mode';
        }
    }

    if (document.getElementById('panel-roadmap') && document.getElementById('panel-roadmap').classList.contains('active')) {
        renderRoadmap();
    }

    if (withToast) {
        showToast(theme === 'light' ? 'Light mode enabled' : 'Dark mode enabled');
    }
}

// Save settings to local storage
function saveSettings() {
    const settings = {
        projectKey: document.getElementById('projectKey').value,
        customFields: document.getElementById('customFields').value,
        jqlQuery: document.getElementById('jqlQuery').value
    };
    localStorage.setItem('jira_roadmap_settings', JSON.stringify(settings));
}

// Load settings on startup
function loadSettings() {
    const saved = localStorage.getItem('jira_roadmap_settings');
    if (saved) {
        const settings = JSON.parse(saved);
        document.getElementById('projectKey').value = settings.projectKey || '';
        document.getElementById('customFields').value = settings.customFields || '';
        document.getElementById('jqlQuery').value = settings.jqlQuery || '';
    }
}


// --- UTILITIES ---
function showToast(msg, type='success') {
    const c = document.getElementById('toastContainer');
    const t = document.createElement('div');
    t.className = `toast toast-${type}`;
    t.innerHTML = `<i class="fa-solid fa-${type==='success'?'check-circle':'xmark-circle'}"></i><span>${msg}</span>`;
    c.appendChild(t);
    setTimeout(() => t.remove(), 3500);
}

function autoJql() {
    const key = document.getElementById('projectKey').value.trim().toUpperCase();
    const jql = document.getElementById('jqlQuery');
    if (!jql.value.trim() || jql.value.trim().startsWith('project =')) {
        jql.value = `project = "${key}" ORDER BY created DESC`;
    }
}

async function pingApi() {
    saveSettings();

    const btn = event.target.closest('.btn');
    const orig = btn.innerHTML; btn.innerHTML = '<span class="spinner"></span> Testing...'; btn.disabled = true;
    try {
        const r = await fetch(`${API_BASE}/api/extract`, { method: 'POST', headers: {'Content-Type':'application/json'}, body: JSON.stringify({username:'_', apiToken:'_', projectKey:'_'}) });
        if (r.status === 400) showToast('Local API connected!', 'success');
        else showToast('API responded: ' + r.status, 'success');
    } catch(e) {
        showToast('API unreachable. Please run "npm start".', 'error');
    } finally { btn.innerHTML = orig; btn.disabled = false; }
}

async function startExtraction() {
    saveSettings();

    const btn = document.getElementById('extractBtn');
    const user = document.getElementById('username').value.trim();
    const token = document.getElementById('apiToken').value.trim();
    const project = document.getElementById('projectKey').value.trim().toUpperCase();
    const jql = document.getElementById('jqlQuery').value.trim();
    const custom = document.getElementById('customFields').value.trim();

    if (!user || !token || !project) { showToast('Required fields missing.', 'error'); return; }

    btn.innerHTML = '<span class="spinner"></span> Extracting...'; btn.disabled = true;

    try {
        const resp = await fetch(`${API_BASE}/api/extract`, {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ username: user, apiToken: token, projectKey: project, jql: jql, customFields: custom })
        });
        const data = await resp.json();
        if (!resp.ok) throw new Error(data.error || `Error ${resp.status}`);

        allTickets = data.tickets;
        filteredTickets = [...allTickets];
        customFieldsMap = parseCustomFields(custom);
        lastUsername = user;
        lastApiToken = token;
        
        renderResults();
        showToast(`${allTickets.length} tickets extracted.`, 'success');
    } catch (err) {
        showToast(err.message, 'error');
    } finally {
        btn.innerHTML = '<i class="fa-solid fa-download"></i> Start Extraction'; btn.disabled = false;
    }
}

function parseCustomFields(customFields) {
    const map = [];
    if (customFields) {
        customFields.split(',').forEach(cf => {
            const [id, label] = cf.split(':').map(s => s.trim());
            if (id) map.push({ id, label: label || id });
        });
    }
    return map;
}

function sortTable(colKey) {
    if (currentSortCol === colKey) {
        isAsc = !isAsc;
    } else {
        currentSortCol = colKey;
        isAsc = true;
    }

    filteredTickets.sort((a, b) => {
        let valA = a[colKey] || '';
        let valB = b[colKey] || '';

        if (colKey.toLowerCase().includes('date') || colKey === 'created' || colKey === 'dueDate') {
            valA = new Date(valA);
            valB = new Date(valB);
        }

        if (valA < valB) return isAsc ? -1 : 1;
        if (valA > valB) return isAsc ? 1 : -1;
        return 0;
    });

    renderTable();
}

// --- TICKET UPDATE ---
async function updateTicket(ticketKey, dueDate, goLiveDate) {
    if (!lastUsername || !lastApiToken) {
        showToast('Please extract tickets first.', 'error');
        return;
    }

    const btn = document.querySelector(`[data-ticket="${ticketKey}"]`);
    const orig = btn.innerHTML;
    btn.innerHTML = '<span class="spinner"></span>';
    btn.disabled = true;

    const goLiveField = customFieldsMap.find(cf => cf.label.toLowerCase().includes('go live'));
    const updates = {};
    if (dueDate !== undefined) updates.duedate = dueDate;
    if (goLiveDate !== undefined && goLiveField) updates[goLiveField.id] = goLiveDate;

    try {
        const resp = await fetch(`${API_BASE}/api/update`, {
            method: 'PUT',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ username: lastUsername, apiToken: lastApiToken, ticketKey, updates })
        });
        if (!resp.ok) {
            const data = await resp.json();
            throw new Error(data.error || `HTTP Error ${resp.status}`);
        }

        const ticket = allTickets.find(t => t.key === ticketKey);
        if (ticket) {
            if (updates.duedate !== undefined) ticket.dueDate = updates.duedate;
            if (goLiveField && updates[goLiveField.id] !== undefined) ticket[goLiveField.label] = updates[goLiveField.id];
        }

        renderTable();
        renderRoadmap();
        showToast(`Ticket ${ticketKey} updated!`, 'success');
    } catch (err) {
        showToast(err.message, 'error');
    } finally {
        btn.innerHTML = orig;
        btn.disabled = false;
    }
}

function enableUpdateBtn(ticketKey) {
    const btn = document.getElementById(`update-${ticketKey}`);
    if (btn) btn.disabled = false;
}

function handleUpdateClick(ticketKey, goLiveColName) {
    const dueInput = document.getElementById(`due-${ticketKey}`);
    const dueDate = dueInput && dueInput.value ? dueInput.value : null;

    let goLiveDate = null;
    if (goLiveColName) {
        const goLiveInput = document.getElementById(`gl-${ticketKey}`);
        goLiveDate = goLiveInput && goLiveInput.value ? goLiveInput.value : null;
    }
    updateTicket(ticketKey, dueDate, goLiveDate);
}

// --- RENDERING ---
function renderResults() {
    document.getElementById('results-section').classList.add('visible');
    renderStats(); renderTable(); renderJSON(); renderRoadmap();
}

function renderStats() {
    const unassigned = allTickets.filter(t => !t.assignee).length;
    const now = new Date();
    const overdue = allTickets.filter(t => t.dueDate && mapJiraStatus(t.status) !== 'Done' && new Date(t.dueDate) < now).length;
    document.getElementById('statsRow').innerHTML = `
        <div class="stat-card"><div class="stat-value">${allTickets.length}</div><div class="stat-label">Tickets</div></div>
        <div class="stat-card"><div class="stat-value">${new Set(allTickets.map(t=>mapJiraStatus(t.status))).size}</div><div class="stat-label">Statuses</div></div>
        <div class="stat-card"><div class="stat-value">${unassigned}</div><div class="stat-label">Unassigned</div></div>
        <div class="stat-card"><div class="stat-value" style="color:${overdue>0?'var(--danger)':'var(--accent)'}">${overdue}</div><div class="stat-label">Overdue</div></div>
    `;
}

function escHtml(s) { if(!s) return ''; const d=document.createElement('div'); d.textContent=String(s); return d.innerHTML; }
function fmtDate(d) { if(!d) return '<span class="empty-cell">-</span>'; try { return new Date(d).toLocaleDateString('en-US',{day:'2-digit',month:'short',year:'numeric'}); } catch { return escHtml(d); } }

function renderTable() {
    let goLiveColName = null;
    if (allTickets.length > 0) {
        goLiveColName = Object.keys(allTickets[0]).find(key => 
            !['key','url','summary','description','status','statusCategory','assignee','reporter','priority','issueType','created','updated','dueDate','resolution','resolutionDate','labels','components','fixVersions','projectName'].includes(key)
        );
    }

    const colMapping = {
        'Ticket': 'key',
        'Summary': 'summary',
        'Status': 'status',
        'Assignee': 'assignee',
        'Priority': 'priority',
        'Type': 'issueType',
        'Due Date': 'dueDate'
    };

    const cols = ['Ticket','Summary','Status','Assignee','Priority','Type','Due Date'];
    if (goLiveColName) {
        cols.push(goLiveColName);
        colMapping[goLiveColName] = goLiveColName;
    }
    cols.push('Actions');

    document.getElementById('tableHead').innerHTML = '<tr>' + cols.map(c => {
        const key = colMapping[c];
        if (!key) return `<th>${c}</th>`;
        
        const icon = currentSortCol === key ? (isAsc ? ' ▴' : ' ▾') : '';
        return `<th onclick="sortTable('${key}')" style="cursor:pointer" class="sortable-th">
                    ${c}${icon}
                </th>`;
    }).join('') + '</tr>';

    let body = '';
    filteredTickets.forEach(t => {
        const dueDateValue = t.dueDate ? t.dueDate.substring(0, 10) : '';
        const mappedStatus = mapJiraStatus(t.status);
        body += `<tr>
            <td><span class="ticket-key" onclick="window.open('${t.url}', '_blank')">${escHtml(t.key)}</span></td>
            <td title="${escHtml(t.summary)}">${escHtml(t.summary)}</td>
            <td>
                <span class="status-badge ${getStatusClass(t.status)}" title="Jira: ${escHtml(t.status)}">
                    ${escHtml(mappedStatus)}
                </span>
            </td>
            <td>${escHtml(t.assignee) || '-'}</td>
            <td>${escHtml(t.priority)}</td>
            <td>${escHtml(t.issueType)}</td>
            <td><input type="date" class="date-input" id="due-${t.key}" value="${dueDateValue}" onchange="enableUpdateBtn('${t.key}')"></td>`;

        if (goLiveColName) {
            const glVal = t[goLiveColName] ? t[goLiveColName].substring(0, 10) : '';
            body += `<td><input type="date" class="date-input" id="gl-${t.key}" value="${glVal}" onchange="enableUpdateBtn('${t.key}')"></td>`;
        }

        body += `<td>
            <button class="btn-update" id="update-${t.key}" data-ticket="${t.key}" onclick="handleUpdateClick('${t.key}', '${goLiveColName || ''}')" disabled>
                <i class="fa-solid fa-rotate"></i> Update
            </button>
        </td></tr>`;
    });
    document.getElementById('tableBody').innerHTML = body || '<tr><td colspan="10">No results found</td></tr>';
}

// --- ROADMAP (GANTT) ---
function setGanttView(view) {
    currentGanttView = view;
    renderRoadmap();
}

function toggleGanttExpand() {
    isGanttExpanded = !isGanttExpanded;
    updateGanttExpandState();
}

function updateGanttExpandState() {
    const container = document.querySelector('.gantt-container');
    const icon = document.getElementById('ganttExpandIcon');
    const label = document.getElementById('ganttExpandLabel');
    const btn = document.getElementById('ganttExpandBtn');

    if (container) {
        if (isGanttExpanded) {
            container.classList.add('expanded');
        } else {
            container.classList.remove('expanded');
        }
    }

    if (icon && label) {
        if (isGanttExpanded) {
            icon.className = 'fa-solid fa-down-left-and-up-right-to-center';
            label.textContent = 'Collapse';
            if (btn) btn.classList.add('active');
        } else {
            icon.className = 'fa-solid fa-up-right-and-down-left-from-center';
            label.textContent = 'Expand';
            if (btn) btn.classList.remove('active');
        }
    }
}

// --- GANTT UTILITIES ---

/**
 * Extracts short title and project type according to the pattern: "Title - Type - Amount - ID"
 */
function parseTicketSummary(summary) {
    if (!summary) return { shortTitle: 'Untitled', type: 'OTHER' };
    const parts = summary.split(' - ');
    const shortTitle = parts[0].trim();
    const typePart = parts[1] ? parts[1].trim().toUpperCase() : 'OTHER';
    
    const type = ['PR', 'CR', 'TR'].includes(typePart) ? typePart : 'OTHER';
    return { shortTitle, type };
}

/**
 * Defines activity type accent color
 */
function getTypeColor(type) {
    const isLight = document.documentElement.getAttribute('data-theme') === 'light';
    switch(type) {
        case 'PR': return isLight ? '#0284c7' : '#38bdf8'; // Blue
        case 'CR': return isLight ? '#b45309' : '#fbbf24'; // Amber
        case 'TR': return isLight ? '#6d28d9' : '#c084fc'; // Purple
        default: return isLight ? '#475569' : '#94a3b8';   // Gray
    }
}

/**
 * MAIN ROADMAP RENDERING FUNCTION
 */
function renderRoadmap() {
    const preview = document.getElementById('roadmapPreview');
    if (!filteredTickets || filteredTickets.length === 0) {
        preview.innerHTML = `<div style="text-align:center; padding:60px; color:var(--fg-dim);">No tickets to display.</div>`;
        return;
    }

    const goLiveColName = Object.keys(filteredTickets[0]).find(k => k.toLowerCase().includes('go live')) || "Go Live Date";
    
    const leftWidth = 280;
    let colWidth = 140;
    if (currentGanttView === 'quarter') colWidth = 200;
    if (currentGanttView === 'year') colWidth = 250;

    // Filter tickets with at least one date
    const ticketsWithDates = filteredTickets.filter(t => {
        const d1 = t.dueDate ? new Date(t.dueDate) : null;
        const d2 = t[goLiveColName] ? new Date(t[goLiveColName]) : null;
        return (d1 && !isNaN(d1.getTime())) || (d2 && !isNaN(d2.getTime()));
    });

    if (ticketsWithDates.length === 0) {
        preview.innerHTML = `<div style="padding:40px; text-align:center; color:var(--fg-dim);">No Due Date or Go Live date found for filtered tickets.</div>`;
        return;
    }

    const allDates = ticketsWithDates.flatMap(t => [
        t.dueDate ? new Date(t.dueDate) : null,
        t[goLiveColName] ? new Date(t[goLiveColName]) : null
    ].filter(d => d !== null));

    let minDate = new Date(Math.min(...allDates));
    let maxDate = new Date(Math.max(...allDates));
    
    minDate.setDate(1);
    if (currentGanttView === 'quarter') minDate.setMonth(Math.floor(minDate.getMonth() / 3) * 3);
    if (currentGanttView === 'year') minDate.setMonth(0);
    
    maxDate.setMonth(maxDate.getMonth() + 2);
    maxDate.setDate(0);

    const timeScale = [];
    let tempDate = new Date(minDate);
    while (tempDate <= maxDate) {
        let label = "", key = "";
        if (currentGanttView === 'month') {
            label = tempDate.toLocaleDateString('en-US', { month: 'short', year: 'numeric' });
            key = `${tempDate.getFullYear()}-${tempDate.getMonth()}`;
            tempDate.setMonth(tempDate.getMonth() + 1);
        } else if (currentGanttView === 'quarter') {
            const q = Math.floor(tempDate.getMonth() / 3) + 1;
            label = `Q${q} ${tempDate.getFullYear()}`;
            key = `${tempDate.getFullYear()}-Q${q}`;
            tempDate.setMonth(tempDate.getMonth() + 3);
        } else if (currentGanttView === 'year') {
            label = `${tempDate.getFullYear()}`;
            key = `${tempDate.getFullYear()}`;
            tempDate.setFullYear(tempDate.getFullYear() + 1);
        }
        timeScale.push({ key, label });
    }

    const getXPos = (date) => {
        if (!date) return 0;
        const d = new Date(date);
        let index = -1;
        if (currentGanttView === 'month') index = timeScale.findIndex(m => m.key === `${d.getFullYear()}-${d.getMonth()}`);
        else if (currentGanttView === 'quarter') index = timeScale.findIndex(m => m.key === `${d.getFullYear()}-Q${Math.floor(d.getMonth() / 3) + 1}`);
        else if (currentGanttView === 'year') index = timeScale.findIndex(m => m.key === `${d.getFullYear()}`);
        
        if (index === -1) return 0;
        
        let ratio = 0;
        if (currentGanttView === 'month') ratio = (d.getDate() - 1) / 30;
        else if (currentGanttView === 'quarter') ratio = ((d.getMonth() % 3) * 30 + d.getDate()) / 90;
        else if (currentGanttView === 'year') ratio = (d.getMonth() * 30 + d.getDate()) / 365;
        
        return leftWidth + (index * colWidth) + (ratio * colWidth);
    };

    const grouped = ticketsWithDates.reduce((acc, t) => {
        const name = t.assignee || "Unassigned";
        if (!acc[name]) acc[name] = [];
        acc[name].push(t);
        return acc;
    }, {});

    let html = `<div class="gantt-container ${isGanttExpanded ? 'expanded' : ''}"><div class="gantt-canvas" style="width: ${leftWidth + (timeScale.length * colWidth)}px;">`;
    
    const todayX = getXPos(new Date());
    if (todayX > leftWidth) {
        html += `<div class="gantt-today-line" style="left: ${todayX}px;"></div>`;
        html += `<div class="gantt-today-label" id="todayMarker" style="left: ${todayX}px;">Today</div>`;
    }

    html += `<div class="gantt-header"><div class="gantt-sticky-col gantt-group-name" style="width:${leftWidth}px">Assignee / Ticket (Title)</div>`;
    timeScale.forEach(ts => { html += `<div class="gantt-month-header" style="width:${colWidth}px;">${ts.label}</div>`; });
    html += `</div>`;

    Object.keys(grouped).sort().forEach(assignee => {
        html += `<div class="gantt-group-header">
                    <div class="gantt-sticky-col gantt-group-name" style="width:${leftWidth}px">
                        <i class="fa-solid fa-user-circle mr-8"></i>${assignee}
                    </div>
                 </div>`;
        
        const sortedTickets = grouped[assignee].sort((a, b) => (new Date(a.dueDate || 0)) - (new Date(b.dueDate || 0)));

        sortedTickets.forEach(t => {
            const dDue = t.dueDate ? new Date(t.dueDate) : null;
            const dLive = t[goLiveColName] ? new Date(t[goLiveColName]) : null;
            
            const start = dDue || dLive;
            const end = dLive || dDue;
            const x1 = getXPos(start);
            const x2 = getXPos(end);
            
            const barWidth = Math.max(170, (x2 - x1) + 10);
            
            const { shortTitle, type } = parseTicketSummary(t.summary);
            const mappedStatus = mapJiraStatus(t.status);
            const statusCfg = getStatusThemeConfig(mappedStatus);
            const typeColor = getTypeColor(type);

            html += `<div class="gantt-row">
                        <div class="gantt-sticky-col gantt-ticket-id" style="width:${leftWidth}px;" title="${escHtml(t.key)}: ${escHtml(t.summary)}">
                            ${escHtml(shortTitle)}
                        </div>
                        
                        <div class="gantt-bar" 
                             onclick="window.open('${t.url}', '_blank')"
                             title="${escHtml(t.key)}: ${escHtml(t.summary)} | Status: ${escHtml(t.status)} (${mappedStatus}) | Type: ${type}"
                             style="left:${x1}px; width:${barWidth}px; background:${statusCfg.bg}; border-color:${statusCfg.border}; border-left:5px solid ${statusCfg.border};">
                            
                            <div class="gantt-status-badge" style="background:${statusCfg.badgeBg}; color:${statusCfg.badgeText};">
                                ${escHtml(mappedStatus)}
                            </div>

                            <span class="gantt-type-tag" style="background:${typeColor}20; color:${typeColor}; border:1px solid ${typeColor}66;">
                                ${type}
                            </span>
                            <span class="gantt-bar-title">${escHtml(shortTitle)}</span>
                        </div>
                        ${timeScale.map(() => `<div class="gantt-grid-col" style="width:${colWidth}px;"></div>`).join('')}
                     </div>`;
        });
    });

    html += `</div></div>`;
    preview.innerHTML = html;
    
    setTimeout(() => {
        const m = document.getElementById('todayMarker');
        if (m) m.scrollIntoView({ behavior: 'smooth', inline: 'center', block: 'nearest' });
    }, 150);
}


// --- TAB & FILTER ---
function switchTab(id, btn) {
    document.querySelectorAll('.tab-btn').forEach(b=>b.classList.remove('active'));
    document.querySelectorAll('.tab-panel').forEach(p=>p.classList.remove('active'));
    btn.classList.add('active'); document.getElementById(`panel-${id}`).classList.add('active');
    if(id === 'roadmap') renderRoadmap();
}

function filterTable() {
    const q = document.getElementById('searchInput').value.toLowerCase();
    filteredTickets = q ? allTickets.filter(t => Object.values(t).some(v => v && String(v).toLowerCase().includes(q))) : [...allTickets];
    renderTable();
    if(document.getElementById('panel-roadmap').classList.contains('active')) renderRoadmap();
}

function exportDrawIOXML(mode) {
    try {
        if (!filteredTickets || filteredTickets.length === 0) {
            showToast("No tickets to export", "error");
            return;
        }

        const goLiveCol = Object.keys(filteredTickets[0]).find(k => k.toLowerCase().includes('go live')) || "dueDate";
        const ticketsWithDates = filteredTickets.filter(t => t.dueDate || t[goLiveCol]);

        if (ticketsWithDates.length === 0) {
            showToast("No end dates found", "error");
            return;
        }

        const leftWidth = 250;
        const rowHeight = 50;
        let pixelPerDay = 12;
        if (currentGanttView === 'quarter') pixelPerDay = 4;
        if (currentGanttView === 'year') pixelPerDay = 1.2;

        const allDates = ticketsWithDates.map(t => new Date(t.dueDate || t[goLiveCol]));
        let minDate = new Date(Math.min(...allDates));
        minDate.setDate(1);
        let maxDate = new Date(Math.max(...allDates));
        maxDate.setMonth(maxDate.getMonth() + 4);

        const getX = (dateStr) => {
            const d = new Date(dateStr);
            if (isNaN(d.getTime())) return leftWidth;
            return Math.floor(leftWidth + ((d - minDate) / 86400000 * pixelPerDay));
        };

        let xmlNodes = '';

        let curr = new Date(minDate);
        while (curr < maxDate) {
            const xPos = getX(curr);
            let label = "";
            
            if (currentGanttView === 'month') {
                label = curr.toLocaleDateString('en-US', { month: 'short', year: 'numeric' }).toUpperCase();
                curr.setMonth(curr.getMonth() + 1);
            } else if (currentGanttView === 'quarter') {
                label = "Q" + (Math.floor(curr.getMonth() / 3) + 1) + " " + curr.getFullYear();
                curr.setMonth(curr.getMonth() + 3);
            } else {
                label = curr.getFullYear();
                curr.setFullYear(curr.getFullYear() + 1);
            }

            xmlNodes += `<mxCell id="m_${curr.getTime()}" value="${label}" style="text;fontColor=#7a9488;fontSize=14;fontStyle=1;align=left;verticalAlign=middle" vertex="1" parent="1">
                <mxGeometry x="${xPos + 5}" y="5" width="150" height="30" as="geometry"/>
            </mxCell>`;
            
            xmlNodes += `<mxCell id="l_${curr.getTime()}" value="" style="line;strokeColor=#E0E0E0;direction=south;html=1;opacity=20" vertex="1" parent="1">
                <mxGeometry x="${xPos}" y="0" width="10" height="4000" as="geometry"/>
            </mxCell>`;
        }

        const xToday = getX(new Date());
        xmlNodes += `<mxCell id="today" value="TODAY" style="line;strokeColor=#FF0000;direction=south;html=1;dashed=1;strokeWidth=2;fontColor=#FF0000;fontSize=12;fontStyle=1;verticalAlign=top" vertex="1" parent="1">
            <mxGeometry x="${xToday}" y="0" width="10" height="4000" as="geometry"/>
        </mxCell>`;

        let currentY = 80;
        const groups = ticketsWithDates.reduce((acc, t) => {
            const a = t.assignee || 'Unassigned';
            if (!acc[a]) acc[a] = [];
            acc[a].push(t);
            return acc;
        }, {});

        Object.keys(groups).sort().forEach(assignee => {
            xmlNodes += `<mxCell id="as_${currentY}" value="${assignee.toUpperCase()}" style="text;fontColor=#00e68a;fontStyle=1;fontSize=14" vertex="1" parent="1">
                <mxGeometry x="10" y="${currentY}" width="200" height="30" as="geometry"/>
            </mxCell>`;
            currentY += 40;

            groups[assignee].forEach(t => {
                const { shortTitle, type } = parseTicketSummary(t.summary);
                const mappedStatus = mapJiraStatus(t.status);
                const statusDef = STATUS_DEFINITIONS[mappedStatus] || STATUS_DEFINITIONS['Opportunity'];
                const barColor = statusDef.drawioColor;
                
                const startDate = t.created ? new Date(t.created) : minDate;
                const endDate = new Date(t.dueDate || t[goLiveCol]);
                
                const xStart = getX(startDate);
                const xEnd = getX(endDate);
                let barWidth = xEnd - xStart;
                if (barWidth < 50) barWidth = 140; 

                xmlNodes += `<mxCell id="lbl_${currentY}" value="${escHtml(shortTitle)}" style="text;fontColor=#555555;fontSize=10;align=left;whiteSpace=wrap" vertex="1" parent="1">
                    <mxGeometry x="30" y="${currentY}" width="200" height="30" as="geometry"/>
                </mxCell>`;

                const label = `[${mappedStatus}] [${type}] ${escHtml(shortTitle)}`;
                xmlNodes += `<mxCell id="bar_${currentY}" value="${label}" style="rounded=1;fillColor=${barColor};strokeColor=#FFFFFF;fontColor=#FFFFFF;fontSize=10;fontStyle=1;spacingLeft=8;align=left" vertex="1" parent="1">
                    <mxGeometry x="${xStart}" y="${currentY}" width="${barWidth}" height="28" as="geometry"/>
                </mxCell>`;

                currentY += rowHeight;
            });
            currentY += 20;
        });

        const finalXml = `<?xml version="1.0" encoding="UTF-8"?>
<mxfile host="app.diagrams.net">
  <diagram id="Jira" name="Roadmap">
    <mxGraphModel dx="1000" dy="1000" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="0" background="none">
      <root>
        <mxCell id="0" />
        <mxCell id="1" parent="0" />
        ${xmlNodes}
      </root>
    </mxGraphModel>
  </diagram>
</mxfile>`;

        if (mode === 'download') {
            const blob = new Blob([finalXml], { type: 'text/xml' });
            const a = document.createElement('a');
            a.href = URL.createObjectURL(blob);
            a.download = "jira_export.drawio";
            a.click();
        } else {
            navigator.clipboard.writeText(finalXml).then(() => showToast("XML Copied!"));
        }

    } catch (error) {
        console.error(error);
        showToast("Error during XML export", "error");
    }
}

function renderJSON() { document.getElementById('jsonViewer').innerHTML = syntaxHL(JSON.stringify(allTickets, null, 2)); }
function syntaxHL(json) {
    json = json.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
    return json.replace(/("(\\u[\da-fA-F]{4}|\\[^u]|[^\\"])*"(\s*:)?|\b(true|false|null)\b|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?)/g, m => {
        let c = 'json-number'; if(/^"/.test(m)) c = /:$/.test(m)?'json-key':'json-string'; else if(/true|false/.test(m)) c='json-bool'; else if(/null/.test(m)) c='json-null';
        return `<span class="${c}">${m}</span>`;
    });
}

function downloadJSON() {
    const blob = new Blob([JSON.stringify(allTickets, null, 2)], {type:'application/json'});
    const a = document.createElement('a'); a.href = URL.createObjectURL(blob);
    a.download = `export-${Date.now()}.json`; a.click();
}

function copyJSON() { navigator.clipboard.writeText(JSON.stringify(allTickets, null, 2)).then(() => showToast('Copied!')); }

function clearResults() { allTickets=[]; filteredTickets=[]; document.getElementById('results-section').classList.remove('visible'); }

document.addEventListener('keydown', e => { if((e.ctrlKey||e.metaKey)&&e.key==='Enter'){e.preventDefault();startExtraction()} });
document.addEventListener('DOMContentLoaded', () => {
    initTheme();
    loadSettings();
    console.log("Settings loaded from local storage.");
});