/* tkpurchase-partner-portal.js - Partner portal logic (2-step flow) */

let portalSchedules = [];
let portalRequests = [];
let portalCheckins = {};
let partnerCompanyId = null;
let companyWorkersCache = null;

async function loadMySchedules() {
    try {
        const r = await api('/schedules/my');
        const data = r.data || {};
        portalSchedules = Array.isArray(data) ? data : (data.schedules || []);
        portalRequests = Array.isArray(data) ? [] : (data.requests || []);
    } catch(e) {
        console.warn('Load schedules error:', e);
        portalSchedules = [];
        portalRequests = [];
    }
}

async function loadMyCheckins() {
    try {
        const r = await api('/checkins/my');
        const list = r.data || [];
        portalCheckins = {};
        list.forEach(c => {
            if (c.schedule_id && !portalCheckins[c.schedule_id]) portalCheckins[c.schedule_id] = c;
        });
    } catch(e) {
        console.warn('Load checkins error:', e);
        portalCheckins = {};
    }
}

async function loadCompanyWorkers() {
    if (companyWorkersCache) return companyWorkersCache;
    try {
        const r = await api('/partners/' + partnerCompanyId + '/workers');
        companyWorkersCache = (r.data || []).filter(w => w.is_active !== 0);
        return companyWorkersCache;
    } catch(e) {
        console.warn('Load workers error:', e);
        companyWorkersCache = [];
        return [];
    }
}

async function renderScheduleCards() {
    await Promise.all([loadMySchedules(), loadMyCheckins()]);

    const container = document.getElementById('scheduleCards');
    const requestCardsEl = document.getElementById('requestCards');
    const workRequestFormEl = document.getElementById('workRequestForm');

    if (!portalSchedules.length) {
        container.innerHTML = '';
        // 신청 건 표시
        if (portalRequests.length) {
            requestCardsEl.classList.remove('hidden');
            requestCardsEl.innerHTML = portalRequests.map(r => {
                const isRejected = r.status === 'rejected';
                const statusBg = isRejected ? 'bg-red-50 border-red-200' : 'bg-amber-50 border-amber-200';
                const statusIcon = isRejected ? 'fa-times-circle text-red-400' : 'fa-clock text-amber-400';
                const statusText = isRejected ? '반려됨' : '승인 대기 중';
                const statusTextClass = isRejected ? 'text-red-600' : 'text-amber-600';
                return `<div class="bg-white rounded-xl shadow-sm overflow-hidden border ${isRejected ? 'border-red-100' : 'border-amber-100'}">
                    <div class="p-5">
                        <div class="flex items-center justify-between mb-2">
                            <h3 class="text-base font-semibold text-gray-800">${escapeHtml(r.workplace_name || '작업장 미지정')}</h3>
                            <span class="text-xs ${statusTextClass} font-medium px-2 py-1 rounded-full ${statusBg}">
                                <i class="fas ${statusIcon} mr-1"></i>${statusText}
                            </span>
                        </div>
                        <div class="text-sm text-gray-600 mb-2">${escapeHtml(r.work_description || '')}</div>
                        <div class="flex gap-4 text-xs text-gray-500">
                            <span><i class="fas fa-calendar mr-1"></i>${formatDate(r.start_date)}</span>
                            <span><i class="fas fa-users mr-1"></i>예상 ${r.expected_workers || 0}명</span>
                        </div>
                    </div>
                </div>`;
            }).join('');
            // 반려 건만 있으면 재신청 폼도 표시
            const hasOnlyRejected = portalRequests.every(r => r.status === 'rejected');
            if (hasOnlyRejected) {
                workRequestFormEl.classList.remove('hidden');
                workRequestFormEl.querySelector('p').textContent = '반려된 신청 건이 있습니다. 필요시 재신청해주세요.';
            } else {
                workRequestFormEl.classList.add('hidden');
            }
        } else {
            requestCardsEl.classList.add('hidden');
            workRequestFormEl.classList.remove('hidden');
            workRequestFormEl.querySelector('p').textContent = '등록된 작업 일정이 없습니다. 작업이 필요하시면 아래에서 신청해주세요.';
        }
        // 기본 날짜 설정
        const today = new Date().toISOString().substring(0, 10);
        const reqDate = document.getElementById('reqStartDate');
        if (reqDate && !reqDate.value) reqDate.value = today;
        return;
    }

    // 오늘 일정 있으면 기존 카드 렌더
    requestCardsEl.classList.add('hidden');
    workRequestFormEl.classList.add('hidden');

    const today = new Date().toISOString().substring(0, 10);

    container.innerHTML = portalSchedules.map(s => {
        const checkin = portalCheckins[s.id];
        const isCheckedIn = checkin && !checkin.check_out_time;
        const isCheckedOut = checkin && checkin.check_out_time;
        const sStart = s.start_date ? s.start_date.substring(0, 10) : '';
        const sEnd = s.end_date ? s.end_date.substring(0, 10) : '';
        const isToday = sStart <= today && sEnd >= today;

        // 2-step indicators
        const step1Class = checkin ? 'text-emerald-600' : 'text-gray-400';
        const step2Class = isCheckedOut ? 'text-emerald-600' : 'text-gray-400';

        const dateBadge = isToday
            ? `<span class="text-xs text-white bg-emerald-500 px-2 py-0.5 rounded-full font-medium">오늘</span>`
            : `<span class="text-xs text-gray-500">${formatDate(s.start_date) === formatDate(s.end_date) ? formatDate(s.start_date) : formatDate(s.start_date) + ' ~ ' + formatDate(s.end_date)}</span>`;

        return `<div class="bg-white rounded-xl shadow-sm overflow-hidden ${!isToday ? 'border border-gray-200' : ''}">
            <!-- 일정 정보 -->
            <div class="p-5 border-b">
                <div class="flex items-center justify-between mb-2">
                    <h3 class="text-base font-semibold text-gray-800">${escapeHtml(s.workplace_name || '작업장 미지정')}</h3>
                    ${dateBadge}
                </div>
                ${!isToday ? `<div class="text-xs text-gray-400 mb-1"><i class="fas fa-calendar-alt mr-1"></i>${formatDate(s.start_date)}${formatDate(s.start_date) !== formatDate(s.end_date) ? ' ~ ' + formatDate(s.end_date) : ''}</div>` : ''}
                ${s.work_description ? `<p class="text-sm text-gray-600 mb-2">${escapeHtml(s.work_description)}</p>` : ''}
                <div class="flex gap-4 text-xs text-gray-500">
                    <span><i class="fas fa-users mr-1"></i>예상 ${s.expected_workers || 0}명</span>
                    ${s.notes ? `<span><i class="fas fa-sticky-note mr-1"></i>${escapeHtml(s.notes)}</span>` : ''}
                </div>
            </div>

            <!-- 2-step 진행 표시 -->
            <div class="px-5 py-3 bg-gray-50 border-b">
                <div class="flex items-center justify-between text-xs">
                    <div class="flex items-center gap-1 ${step1Class}">
                        <i class="fas ${checkin ? 'fa-check-circle' : 'fa-circle'}"></i>
                        <span>1. 작업 시작</span>
                    </div>
                    <div class="flex-1 border-t border-gray-300 mx-2"></div>
                    <div class="flex items-center gap-1 ${step2Class}">
                        <i class="fas ${isCheckedOut ? 'fa-check-circle' : 'fa-circle'}"></i>
                        <span>2. 작업 종료</span>
                    </div>
                </div>
            </div>

            <!-- Step 1: 작업 시작 (체크인) -->
            <div class="p-5 ${checkin ? 'bg-gray-50' : ''}">
                ${!checkin ? `
                <div id="checkinForm_${s.id}">
                    <h4 class="text-sm font-semibold text-gray-700 mb-3"><i class="fas fa-play-circle text-emerald-500 mr-1"></i>작업 시작</h4>
                    <div class="grid grid-cols-1 sm:grid-cols-2 gap-3 mb-3">
                        <div>
                            <label class="block text-xs font-medium text-gray-600 mb-1">실투입 인원 <span class="text-red-400">*</span></label>
                            <input type="number" id="checkinWorkers_${s.id}" min="1" value="${s.expected_workers || 1}" class="input-field w-full px-3 py-2 rounded-lg text-sm">
                        </div>
                        <div>
                            <label class="block text-xs font-medium text-gray-600 mb-1">작업자 명단</label>
                            <input type="text" id="checkinNames_${s.id}" class="input-field w-full px-3 py-2 rounded-lg text-sm" placeholder="홍길동, 김철수">
                        </div>
                    </div>
                    <button onclick="doCheckIn(${s.id})" class="px-4 py-2 bg-emerald-600 text-white rounded-lg text-sm hover:bg-emerald-700">
                        <i class="fas fa-play mr-1"></i>작업 시작
                    </button>
                </div>
                ` : `
                <div class="text-sm text-emerald-600 mb-1">
                    <i class="fas fa-check-circle mr-1"></i>체크인 완료 (${formatTime(checkin.check_in_time)})
                    · ${checkin.actual_worker_count || 0}명
                </div>
                `}
            </div>

            <!-- Step 2: 작업 종료 (체크아웃 폼) -->
            ${isCheckedIn ? `
            <div class="p-5 border-t">
                <div id="checkoutFormToggle_${checkin.id}">
                    <button onclick="showCheckoutForm(${checkin.id}, ${s.id})" class="w-full px-4 py-3 bg-gray-800 text-white rounded-lg text-sm hover:bg-gray-900 font-medium">
                        <i class="fas fa-stop-circle mr-1"></i>작업 종료
                    </button>
                </div>
                <div id="checkoutForm_${checkin.id}" class="hidden mt-3"></div>
            </div>
            ` : ''}

            ${isCheckedOut ? `
            <div class="p-5 border-t bg-gray-50">
                <div class="text-sm text-blue-600">
                    <i class="fas fa-check-double mr-1"></i>작업 종료 완료 (${formatTime(checkin.check_out_time)})
                </div>
            </div>
            ` : ''}
        </div>`;
    }).join('');
}

async function showCheckoutForm(checkinId, scheduleId) {
    const formContainer = document.getElementById('checkoutForm_' + checkinId);
    const toggleBtn = document.getElementById('checkoutFormToggle_' + checkinId);
    if (!formContainer) return;

    // 작업자 목록 로드
    const workers = await loadCompanyWorkers();
    const datalistHtml = workers.map(w => `<option value="${escapeHtml(w.worker_name)}">`).join('');

    // 체크인 시 입력한 작업자 명단으로 pre-populate
    const checkin = Object.values(portalCheckins).find(c => c.id === checkinId);
    let existingWorkers = [];
    if (checkin) {
        let workerNames = [];
        if (checkin.worker_names) {
            let parsed = checkin.worker_names;
            try { parsed = JSON.parse(parsed); } catch(e) { /* 그대로 사용 */ }
            if (Array.isArray(parsed)) {
                workerNames = parsed.map(n => String(n).trim()).filter(Boolean);
            } else {
                workerNames = String(parsed).split(/[,，]\s*/).map(n => n.trim()).filter(Boolean);
            }
        }
        if (workerNames.length > 0) {
            existingWorkers = workerNames.map(name => ({ worker_name: name, hours_worked: 8.0 }));
        } else {
            const count = Math.max(checkin.actual_worker_count || 1, 1);
            for (let i = 0; i < count; i++) {
                existingWorkers.push({ worker_name: '', hours_worked: 8.0 });
            }
        }
    }

    formContainer.innerHTML = `
        <div class="space-y-3 border border-gray-200 rounded-lg p-4 bg-gray-50/30">
            <div class="flex items-center justify-between mb-1">
                <h5 class="text-sm font-semibold text-gray-700"><i class="fas fa-stop-circle text-gray-600 mr-1"></i>작업 종료</h5>
                <button onclick="hideCheckoutForm(${checkinId})" class="text-gray-400 hover:text-gray-600 text-xs"><i class="fas fa-times"></i> 취소</button>
            </div>
            <datalist id="workerDatalist_${checkinId}">${datalistHtml}</datalist>
            <div>
                <label class="block text-xs font-medium text-gray-600 mb-1">작업자 및 투입시간</label>
                <div id="workerRows_${checkinId}" class="space-y-2">
                    ${existingWorkers.length > 0 ? existingWorkers.map((w, i) => workerRowHtml(checkinId, i, w)).join('') : workerRowHtml(checkinId, 0, null)}
                </div>
                <button onclick="addWorkerRow(${checkinId})" class="mt-2 text-xs text-blue-600 hover:text-blue-800"><i class="fas fa-plus mr-1"></i>작업자 추가</button>
            </div>
            <button onclick="submitCheckout(${checkinId})" class="w-full px-4 py-3 bg-red-600 text-white rounded-lg text-sm hover:bg-red-700 font-medium">
                <i class="fas fa-stop-circle mr-1"></i>작업 종료 확인
            </button>
        </div>`;

    formContainer.classList.remove('hidden');
    if (toggleBtn) toggleBtn.classList.add('hidden');
}

function hideCheckoutForm(checkinId) {
    const formContainer = document.getElementById('checkoutForm_' + checkinId);
    const toggleBtn = document.getElementById('checkoutFormToggle_' + checkinId);
    if (formContainer) formContainer.classList.add('hidden');
    if (toggleBtn) toggleBtn.classList.remove('hidden');
}

async function submitCheckout(checkinId) {
    if (!confirm('작업을 종료하시겠습니까?')) return;

    const workers = collectWorkers(checkinId);
    if (workers.length === 0) {
        showToast('작업자를 1명 이상 입력하세요', 'error');
        return;
    }

    try {
        await api('/checkins/' + checkinId + '/checkout-with-report', {
            method: 'PUT',
            body: JSON.stringify({ workers })
        });
        showToast('작업 종료 완료');
        renderScheduleCards();
    } catch(e) {
        showToast(e.message || '체크아웃 실패', 'error');
    }
}

let workerRowCounter = 100;

function workerRowHtml(checkinId, idx, worker) {
    const rowId = 'wr_' + checkinId + '_' + (workerRowCounter++);
    const name = worker ? (worker.worker_name || '') : '';
    const hours = worker ? (worker.hours_worked ?? 8.0) : 8.0;
    const pwId = worker ? (worker.partner_worker_id || '') : '';
    return `<div id="${rowId}" class="flex items-center gap-2 worker-row">
        <input type="text" list="workerDatalist_${checkinId}" value="${escapeHtml(name)}" placeholder="작업자명" class="worker-name input-field flex-1 px-3 py-1.5 rounded-lg text-sm" data-pw-id="${pwId}">
        <input type="number" value="${hours}" step="0.5" min="0" max="24" class="worker-hours input-field w-20 px-2 py-1.5 rounded-lg text-sm text-center" placeholder="시간">
        <span class="text-xs text-gray-400">h</span>
        <button onclick="removeWorkerRow('${rowId}', ${checkinId})" class="text-gray-400 hover:text-red-500 text-sm"><i class="fas fa-times"></i></button>
    </div>`;
}

function addWorkerRow(checkinId) {
    const container = document.getElementById('workerRows_' + checkinId);
    if (!container) return;
    container.insertAdjacentHTML('beforeend', workerRowHtml(checkinId, 0, null));
}

function removeWorkerRow(rowId, checkinId) {
    const row = document.getElementById(rowId);
    if (!row) return;
    const container = document.getElementById('workerRows_' + checkinId);
    if (container && container.querySelectorAll('.worker-row').length <= 1) return;
    row.remove();
}

function collectWorkers(checkinId) {
    const container = document.getElementById('workerRows_' + checkinId);
    if (!container) return [];
    const rows = container.querySelectorAll('.worker-row');
    const workers = [];
    rows.forEach(row => {
        const nameInput = row.querySelector('.worker-name');
        const hoursInput = row.querySelector('.worker-hours');
        const name = nameInput ? nameInput.value.trim() : '';
        if (!name) return;
        let pwId = nameInput.dataset.pwId ? parseInt(nameInput.dataset.pwId) : null;
        if (companyWorkersCache) {
            const match = companyWorkersCache.find(w => w.worker_name === name);
            if (match) pwId = match.id;
        }
        workers.push({
            partner_worker_id: pwId || null,
            worker_name: name,
            hours_worked: parseFloat(hoursInput ? hoursInput.value : 8) || 8.0
        });
    });
    return workers;
}

async function doCheckIn(scheduleId) {
    const workerCount = parseInt(document.getElementById('checkinWorkers_' + scheduleId).value) || 1;
    const rawNames = document.getElementById('checkinNames_' + scheduleId).value.trim();
    const workerNames = rawNames
        ? rawNames.split(/[,，]\s*/).map(n => n.trim()).filter(Boolean)
        : null;

    const body = {
        schedule_id: scheduleId,
        actual_worker_count: workerCount,
        worker_names: workerNames
    };

    try {
        await api('/checkins', { method: 'POST', body: JSON.stringify(body) });
        showToast('체크인 완료');
        renderScheduleCards();
    } catch(e) {
        showToast(e.message || '체크인 실패', 'error');
    }
}

async function doWorkRequest() {
    const startDate = document.getElementById('reqStartDate').value;
    if (!startDate) { showToast('작업일을 선택하세요', 'error'); return; }
    const workDescription = document.getElementById('reqWorkDescription').value.trim();
    if (!workDescription) { showToast('작업 내용을 입력하세요', 'error'); return; }

    const body = {
        start_date: startDate,
        expected_workers: parseInt(document.getElementById('reqExpectedWorkers').value) || 1,
        work_description: workDescription,
        workplace_name: document.getElementById('reqWorkplaceName').value.trim() || null
    };

    try {
        await api('/schedules/request', { method: 'POST', body: JSON.stringify(body) });
        showToast('작업 신청이 완료되었습니다');
        // 폼 초기화
        document.getElementById('reqWorkDescription').value = '';
        document.getElementById('reqWorkplaceName').value = '';
        document.getElementById('reqExpectedWorkers').value = '1';
        renderScheduleCards();
    } catch(e) {
        showToast(e.message || '작업 신청 실패', 'error');
    }
}

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

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

    partnerCompanyId = decoded.partner_company_id;
    document.getElementById('welcomeCompanyName').textContent = decoded.partner_company_name || decoded.name || '협력업체';

    renderScheduleCards();
}