/* tkpurchase-partner-history.js - Partner work history */

let historyPage = 1;
const historyLimit = 20;

function initPartnerHistory() {
    if (!initAuth()) return;

    const token = getToken();
    const decoded = decodeToken(token);
    if (!decoded || !decoded.partner_company_id) {
        location.href = '/';
        return;
    }

    // 기본 날짜: 최근 30일
    const today = new Date();
    const thirtyDaysAgo = new Date(today);
    thirtyDaysAgo.setDate(thirtyDaysAgo.getDate() - 30);
    document.getElementById('filterDateTo').value = today.toISOString().substring(0, 10);
    document.getElementById('filterDateFrom').value = thirtyDaysAgo.toISOString().substring(0, 10);

    loadHistory();
}

async function loadHistory(page) {
    historyPage = page || 1;
    const dateFrom = document.getElementById('filterDateFrom').value;
    const dateTo = document.getElementById('filterDateTo').value;

    const params = new URLSearchParams();
    if (dateFrom) params.set('date_from', dateFrom);
    if (dateTo) params.set('date_to', dateTo);
    params.set('page', historyPage);
    params.set('limit', historyLimit);

    const container = document.getElementById('historyList');
    container.innerHTML = '<p class="text-gray-400 text-center py-8 text-sm">로딩 중...</p>';

    try {
        const r = await api('/checkins/my-history?' + params.toString());
        const checkins = r.data || [];
        const total = r.total || 0;
        renderHistoryList(checkins);
        renderPagination(total);
    } catch(e) {
        container.innerHTML = '<p class="text-red-400 text-center py-8 text-sm">데이터를 불러올 수 없습니다.</p>';
    }
}

function renderHistoryList(checkins) {
    const container = document.getElementById('historyList');

    if (!checkins.length) {
        container.innerHTML = `<div class="bg-white rounded-xl shadow-sm p-8 text-center">
            <i class="fas fa-inbox text-gray-300 text-3xl mb-3"></i>
            <p class="text-gray-500 text-sm">조회 기간에 작업 이력이 없습니다.</p>
        </div>`;
        return;
    }

    container.innerHTML = checkins.map(c => {
        const checkinDate = formatDate(c.check_in_time);
        const checkinTime = formatTime(c.check_in_time);
        const checkoutTime = c.check_out_time ? formatTime(c.check_out_time) : null;
        const reports = c.reports || [];

        // 상태 배지
        let statusHtml = '';
        if (!c.check_out_time) {
            statusHtml = '<span class="text-xs px-2 py-0.5 rounded-full bg-amber-100 text-amber-700">진행중</span>';
        } else {
            statusHtml = '<span class="text-xs px-2 py-0.5 rounded-full bg-blue-100 text-blue-700">완료</span>';
        }

        // 보고 정보
        let reportHtml = '';
        if (reports.length > 0) {
            reportHtml = reports.map(r => {
                const rWorkers = r.workers || [];
                const totalHours = rWorkers.reduce((sum, w) => sum + Number(w.hours_worked || 0), 0);
                const isConfirmed = !!r.confirmed_by;
                const isRejected = !!r.rejected_by;
                const rStatus = isConfirmed
                    ? '<span class="text-xs text-emerald-600"><i class="fas fa-check-circle"></i> 확인완료</span>'
                    : isRejected
                      ? '<span class="text-xs text-red-600"><i class="fas fa-times-circle"></i> 반려</span>'
                      : '<span class="text-xs text-amber-500">미확인</span>';

                const workersDetail = rWorkers.length > 0
                    ? `<div class="mt-1 text-xs text-gray-500">${rWorkers.map(w => escapeHtml(w.worker_name) + ' ' + w.hours_worked + 'h').join(', ')}</div>`
                    : '';

                return `<div class="p-2 bg-gray-50 rounded text-sm">
                    <div class="flex items-center justify-between">
                        <span class="text-gray-700">${escapeHtml((r.work_content || '').substring(0, 60))}${(r.work_content || '').length > 60 ? '...' : ''}</span>
                        ${rStatus}
                    </div>
                    <div class="text-xs text-gray-400 mt-1">${rWorkers.length}명 · ${totalHours}h</div>
                    ${workersDetail}
                </div>`;
            }).join('');
        }

        return `<div class="bg-white rounded-xl shadow-sm overflow-hidden">
            <div class="p-4">
                <div class="flex items-center justify-between mb-2">
                    <div class="flex items-center gap-2">
                        <span class="text-sm font-semibold text-gray-800">${checkinDate}</span>
                        ${statusHtml}
                    </div>
                    <span class="text-xs text-gray-500">${escapeHtml(c.workplace_name || '')}</span>
                </div>
                ${c.work_description ? `<p class="text-sm text-gray-600 mb-2">${escapeHtml(c.work_description)}</p>` : ''}
                <div class="flex gap-4 text-xs text-gray-500 mb-2">
                    <span><i class="fas fa-clock mr-1"></i>${checkinTime}${checkoutTime ? ' ~ ' + checkoutTime : ' ~'}</span>
                    <span><i class="fas fa-users mr-1"></i>${c.actual_worker_count || 0}명</span>
                </div>
                ${reportHtml ? `<div class="space-y-2 mt-3 border-t pt-3">${reportHtml}</div>` : ''}
            </div>
        </div>`;
    }).join('');
}

function renderPagination(total) {
    const container = document.getElementById('historyPagination');
    const totalPages = Math.ceil(total / historyLimit);
    if (totalPages <= 1) { container.innerHTML = ''; return; }

    let html = '';
    for (let i = 1; i <= totalPages; i++) {
        const active = i === historyPage;
        html += `<button onclick="loadHistory(${i})" class="px-3 py-1 rounded text-sm ${active ? 'bg-emerald-600 text-white' : 'bg-white text-gray-600 border hover:bg-gray-50'}">${i}</button>`;
    }
    container.innerHTML = html;
}