/* tkpurchase-daylabor.js - Day labor management */

let dayLaborPage = 1;
const dayLaborLimit = 20;

async function loadDayLabor() {
    const dateFrom = document.getElementById('filterDateFrom').value;
    const dateTo = document.getElementById('filterDateTo').value;
    const status = document.getElementById('filterStatus').value;
    const department = document.getElementById('filterDepartment').value;

    let query = `?page=${dayLaborPage}&limit=${dayLaborLimit}`;
    if (dateFrom) query += '&date_from=' + dateFrom;
    if (dateTo) query += '&date_to=' + dateTo;
    if (status) query += '&status=' + status;
    if (department) query += '&department=' + encodeURIComponent(department);

    try {
        const r = await api('/day-labor' + query);
        renderDayLaborTable(r.data || [], r.total || 0);
    } catch(e) {
        console.warn('Day labor load error:', e);
        document.getElementById('dayLaborTableBody').innerHTML = '<tr><td colspan="8" class="text-center text-red-400 py-8">로딩 실패</td></tr>';
    }
}

function renderDayLaborTable(list, total) {
    const tbody = document.getElementById('dayLaborTableBody');
    if (!list.length) {
        tbody.innerHTML = '<tr><td colspan="8" class="text-center text-gray-400 py-8">신청 내역이 없습니다</td></tr>';
        document.getElementById('dayLaborPagination').innerHTML = '';
        return;
    }

    const statusMap = {
        pending: ['badge-amber', '대기'],
        approved: ['badge-green', '승인'],
        rejected: ['badge-red', '거절'],
        completed: ['badge-gray', '완료']
    };

    tbody.innerHTML = list.map(d => {
        const [cls, label] = statusMap[d.status] || ['badge-gray', d.status];
        let actions = '';
        if (d.status === 'pending') {
            actions = `
                <button onclick="approveDayLabor(${d.id})" class="text-emerald-600 hover:text-emerald-800 text-xs mr-1" title="승인"><i class="fas fa-check"></i></button>
                <button onclick="rejectDayLabor(${d.id})" class="text-red-500 hover:text-red-700 text-xs" title="거절"><i class="fas fa-times"></i></button>`;
        } else if (d.status === 'approved') {
            actions = `<button onclick="completeDayLabor(${d.id})" class="text-blue-600 hover:text-blue-800 text-xs" title="완료"><i class="fas fa-check-double"></i></button>`;
        }
        return `<tr>
            <td>${formatDate(d.created_at)}</td>
            <td class="font-medium">${formatDate(d.work_date)}</td>
            <td>${escapeHtml(d.requester_name || '')}</td>
            <td class="hide-mobile">${escapeHtml(d.department || '')}</td>
            <td class="text-center">${d.worker_count || 0}명</td>
            <td>${escapeHtml(d.workplace_name || '')}</td>
            <td><span class="badge ${cls}">${label}</span></td>
            <td class="text-right">${actions}</td>
        </tr>`;
    }).join('');

    // Pagination
    const totalPages = Math.ceil(total / dayLaborLimit);
    renderDayLaborPagination(totalPages);
}

function renderDayLaborPagination(totalPages) {
    const container = document.getElementById('dayLaborPagination');
    if (totalPages <= 1) { container.innerHTML = ''; return; }

    let html = '';
    if (dayLaborPage > 1) {
        html += `<button onclick="goToDayLaborPage(${dayLaborPage - 1})" class="px-3 py-1 border rounded text-sm hover:bg-gray-50">&laquo;</button>`;
    }
    for (let i = 1; i <= totalPages; i++) {
        if (i === dayLaborPage) {
            html += `<button class="px-3 py-1 bg-emerald-600 text-white rounded text-sm">${i}</button>`;
        } else if (Math.abs(i - dayLaborPage) <= 2 || i === 1 || i === totalPages) {
            html += `<button onclick="goToDayLaborPage(${i})" class="px-3 py-1 border rounded text-sm hover:bg-gray-50">${i}</button>`;
        } else if (Math.abs(i - dayLaborPage) === 3) {
            html += '<span class="text-gray-400">...</span>';
        }
    }
    if (dayLaborPage < totalPages) {
        html += `<button onclick="goToDayLaborPage(${dayLaborPage + 1})" class="px-3 py-1 border rounded text-sm hover:bg-gray-50">&raquo;</button>`;
    }
    container.innerHTML = html;
}

function goToDayLaborPage(p) {
    dayLaborPage = p;
    loadDayLabor();
}

function openAddDayLabor() {
    document.getElementById('addDayLaborForm').reset();
    // Default to tomorrow
    const tomorrow = new Date();
    tomorrow.setDate(tomorrow.getDate() + 1);
    document.getElementById('addWorkDate').value = toLocalDate(tomorrow);
    document.getElementById('addDayLaborModal').classList.remove('hidden');
}

function closeAddDayLabor() {
    document.getElementById('addDayLaborModal').classList.add('hidden');
}

async function submitAddDayLabor(e) {
    e.preventDefault();
    const body = {
        work_date: document.getElementById('addWorkDate').value,
        worker_count: parseInt(document.getElementById('addWorkerCount').value) || 1,
        work_description: document.getElementById('addWorkDescription').value.trim(),
        workplace_name: document.getElementById('addWorkplaceName').value.trim(),
        notes: document.getElementById('addNotes').value.trim()
    };
    if (!body.work_date) { showToast('작업일을 선택하세요', 'error'); return; }

    try {
        await api('/day-labor', { method: 'POST', body: JSON.stringify(body) });
        showToast('일용공 신청이 등록되었습니다');
        closeAddDayLabor();
        loadDayLabor();
    } catch(e) {
        showToast(e.message || '등록 실패', 'error');
    }
}

async function approveDayLabor(id) {
    if (!confirm('이 신청을 승인하시겠습니까?')) return;
    try {
        await api('/day-labor/' + id + '/approve', { method: 'PUT' });
        showToast('승인되었습니다');
        loadDayLabor();
    } catch(e) {
        showToast(e.message || '승인 실패', 'error');
    }
}

async function rejectDayLabor(id) {
    const reason = prompt('거절 사유를 입력하세요:');
    if (reason === null) return;
    try {
        await api('/day-labor/' + id + '/reject', { method: 'PUT', body: JSON.stringify({ reason }) });
        showToast('거절되었습니다');
        loadDayLabor();
    } catch(e) {
        showToast(e.message || '거절 실패', 'error');
    }
}

async function completeDayLabor(id) {
    if (!confirm('이 신청을 완료 처리하시겠습니까?')) return;
    try {
        await api('/day-labor/' + id + '/complete', { method: 'PUT' });
        showToast('완료 처리되었습니다');
        loadDayLabor();
    } catch(e) {
        showToast(e.message || '완료 처리 실패', 'error');
    }
}

function initDayLaborPage() {
    if (!initAuth()) return;
    // Set default date range to this month
    const now = new Date();
    const firstDay = new Date(now.getFullYear(), now.getMonth(), 1);
    document.getElementById('filterDateFrom').value = toLocalDate(firstDay);
    document.getElementById('filterDateTo').value = toLocalDate(now);
    loadDayLabor();
}