/* tkpurchase-partner-portal.js - Partner portal logic */

let portalSchedules = [];
let portalCheckins = {};
let partnerCompanyId = null;
let companyWorkersCache = null; // 작업자 목록 캐시
let editingReportId = null; // 수정 모드일 때 보고 ID

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

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] = 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 noMsg = document.getElementById('noScheduleMessage');

    if (!portalSchedules.length) {
        container.innerHTML = '';
        noMsg.classList.remove('hidden');
        return;
    }

    noMsg.classList.add('hidden');

    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 reportCount = checkin ? (parseInt(checkin.work_report_count) || 0) : 0;

        // Step indicators
        const step1Class = checkin ? 'text-emerald-600' : 'text-gray-400';
        const step2Class = isCheckedIn || isCheckedOut ? 'text-emerald-600' : 'text-gray-400';
        const step3Class = isCheckedOut ? 'text-emerald-600' : 'text-gray-400';

        return `<div class="bg-white rounded-xl shadow-sm overflow-hidden">
            <!-- 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">${escapeHtml(s.workplace_name || '작업장 미지정')}</h3>
                    <span class="text-xs text-gray-500">${formatDate(s.start_date) === formatDate(s.end_date) ? formatDate(s.start_date) : formatDate(s.start_date) + ' ~ ' + formatDate(s.end_date)}</span>
                </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>

            <!-- 3-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 ${(isCheckedIn || isCheckedOut) ? 'fa-check-circle' : 'fa-circle'}"></i>
                        <span>2. 업무현황${reportCount > 0 ? ' (' + reportCount + '건)' : ''}</span>
                    </div>
                    <div class="flex-1 border-t border-gray-300 mx-2"></div>
                    <div class="flex items-center gap-1 ${step3Class}">
                        <i class="fas ${isCheckedOut ? 'fa-check-circle' : 'fa-circle'}"></i>
                        <span>3. 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: 업무현황 (체크인 후 표시) -->
            ${isCheckedIn ? `
            <div class="p-5 border-t">
                <h4 class="text-sm font-semibold text-gray-700 mb-3"><i class="fas fa-clipboard-list text-blue-500 mr-1"></i>업무현황</h4>
                <!-- 제출된 보고 목록 -->
                <div id="reportsList_${checkin.id}" class="mb-3"></div>
                <!-- 추가/수정 폼 토글 버튼 -->
                <div id="reportFormToggle_${checkin.id}">
                    <button onclick="showReportForm(${checkin.id}, ${s.id})" class="px-4 py-2 bg-blue-50 text-blue-600 rounded-lg text-sm hover:bg-blue-100 border border-blue-200">
                        <i class="fas fa-plus mr-1"></i>업무현황 추가
                    </button>
                </div>
                <!-- 입력 폼 (숨김) -->
                <div id="reportForm_${checkin.id}" class="hidden mt-3"></div>
            </div>

            <!-- Step 3: 작업 종료 -->
            <div class="p-5 border-t">
                <button onclick="doCheckOut(${checkin.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 (체크아웃)
                </button>
                <p class="text-xs text-gray-400 text-center mt-2">업무현황을 먼저 저장한 후 작업을 종료하세요.</p>
            </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>
                ${reportCount > 0 ? '<div class="text-xs text-emerald-600 mt-1"><i class="fas fa-clipboard-check mr-1"></i>업무현황 ' + reportCount + '건 제출 완료</div>' : ''}
            </div>
            ` : ''}
        </div>`;
    }).join('');

    // 체크인된 카드의 보고 목록 로드 + 보고 0건이면 폼 자동 표시
    for (const s of portalSchedules) {
        const checkin = portalCheckins[s.id];
        if (checkin && !checkin.check_out_time) {
            const reportCount = parseInt(checkin.work_report_count) || 0;
            loadReportsList(checkin.id, s.id);
            if (reportCount === 0) {
                showReportForm(checkin.id, s.id);
            }
        }
    }
}

async function loadReportsList(checkinId, scheduleId) {
    const container = document.getElementById('reportsList_' + checkinId);
    if (!container) return;

    try {
        const r = await api('/work-reports?checkin_id=' + checkinId + '&limit=50');
        const reports = (r.data || []).filter(rr => rr.checkin_id === checkinId);
        renderReportsList(checkinId, scheduleId, reports);
    } catch(e) {
        container.innerHTML = '';
    }
}

function renderReportsList(checkinId, scheduleId, reports) {
    const container = document.getElementById('reportsList_' + checkinId);
    if (!container) return;

    if (!reports.length) {
        container.innerHTML = '<p class="text-xs text-gray-400 mb-2">아직 등록된 업무현황이 없습니다.</p>';
        return;
    }

    container.innerHTML = reports.map(r => {
        const workerCount = r.workers ? r.workers.length : 0;
        const totalHours = r.workers ? r.workers.reduce((sum, w) => sum + Number(w.hours_worked || 0), 0) : 0;
        const isConfirmed = !!r.confirmed_by;
        const isRejected = !!r.rejected_by;
        const statusBadge = 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 canEdit = !isConfirmed;
        return `<div class="flex items-center justify-between p-3 bg-gray-50 rounded-lg mb-2 text-sm">
            <div class="flex-1 min-w-0">
                <div class="flex items-center gap-2 mb-1">
                    <span class="font-medium text-gray-700">보고 #${r.report_seq || 1}</span>
                    ${statusBadge}
                </div>
                <div class="text-xs text-gray-500 truncate">${escapeHtml((r.work_content || '').substring(0, 50))}${(r.work_content || '').length > 50 ? '...' : ''}</div>
                <div class="text-xs text-gray-400 mt-1">${workerCount}명 · ${totalHours}h · 진행률 ${r.progress_rate || 0}%</div>
                ${isRejected && r.rejection_reason ? `<div class="text-xs text-red-600 mt-1"><i class="fas fa-exclamation-circle mr-1"></i>${escapeHtml(r.rejection_reason)}</div>` : ''}
            </div>
            ${canEdit ? `<button onclick="openEditReport(${r.id}, ${checkinId}, ${scheduleId})" class="ml-2 px-3 py-1 text-xs bg-white border border-gray-300 text-gray-600 rounded hover:bg-gray-100 flex-shrink-0">
                <i class="fas fa-edit mr-1"></i>${isRejected ? '수정 재제출' : '수정'}
            </button>` : ''}
        </div>`;
    }).join('');
}

async function showReportForm(checkinId, scheduleId, editReport) {
    editingReportId = editReport ? editReport.id : null;
    const formContainer = document.getElementById('reportForm_' + checkinId);
    const toggleBtn = document.getElementById('reportFormToggle_' + checkinId);
    if (!formContainer) return;

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

    // 첫 보고 여부 판단
    const checkin = Object.values(portalCheckins).find(c => c.id === checkinId);
    const isFirstReport = !editReport && checkin && parseInt(checkin.work_report_count) === 0;

    // 기본 작업자 행: 체크인 시 입력한 작업자 명단으로 pre-populate
    let existingWorkers = [];
    if (editReport && editReport.workers) {
        existingWorkers = editReport.workers;
    } else if (isFirstReport && 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 if (currentUser) {
            existingWorkers = [{ worker_name: currentUser.name || '', hours_worked: 8.0 }];
        }
    }

    formContainer.innerHTML = `
        <div class="space-y-3 border border-blue-200 rounded-lg p-4 bg-blue-50/30">
            <div class="flex items-center justify-between mb-1">
                <h5 class="text-sm font-semibold text-gray-700">${editReport ? '보고 #' + (editReport.report_seq || 1) + ' 수정' : '새 업무현황'}</h5>
                <button onclick="hideReportForm(${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>
            <!-- 작업자 목록 -->
            <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>
            <div class="grid grid-cols-1 sm:grid-cols-2 gap-3">
                <div>
                    <label class="block text-xs font-medium text-gray-600 mb-1">실투입 인원</label>
                    <input type="number" id="reportWorkers_${checkinId}" min="0" value="${editReport ? (editReport.actual_workers || 0) : (checkin ? checkin.actual_worker_count || 0 : 0)}" 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">진행률 (%)</label>
                    <input type="number" id="reportProgress_${checkinId}" min="0" max="100" value="${editReport ? (editReport.progress_rate || 0) : 0}" class="input-field w-full px-3 py-2 rounded-lg text-sm">
                </div>
            </div>
            <div>
                <label class="block text-xs font-medium text-gray-600 mb-1">작업내용 <span class="text-red-400">*</span></label>
                <textarea id="reportContent_${checkinId}" rows="3" class="input-field w-full px-3 py-2 rounded-lg text-sm" placeholder="오늘 수행한 작업 내용">${editReport ? escapeHtml(editReport.work_content || '') : ''}</textarea>
            </div>
            <div>
                <label class="block text-xs font-medium text-gray-600 mb-1">이슈사항</label>
                <textarea id="reportIssues_${checkinId}" rows="2" class="input-field w-full px-3 py-2 rounded-lg text-sm" placeholder="문제점이나 특이사항">${editReport ? escapeHtml(editReport.issues || '') : ''}</textarea>
            </div>
            <div>
                <label class="block text-xs font-medium text-gray-600 mb-1">향후 계획</label>
                <textarea id="reportNextPlan_${checkinId}" rows="2" class="input-field w-full px-3 py-2 rounded-lg text-sm" placeholder="다음 작업 계획">${editReport ? escapeHtml(editReport.next_plan || '') : ''}</textarea>
            </div>
            <div class="flex gap-2">
                <button onclick="submitWorkReport(${checkinId}, ${scheduleId})" class="px-4 py-2 bg-blue-600 text-white rounded-lg text-sm hover:bg-blue-700">
                    <i class="fas fa-save mr-1"></i>${editReport ? '수정 저장' : '업무현황 저장'}
                </button>
                <button onclick="hideReportForm(${checkinId})" class="px-4 py-2 bg-gray-100 text-gray-600 rounded-lg text-sm hover:bg-gray-200">취소</button>
            </div>
        </div>`;

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

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);
    // 최소 1행 유지
    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;
        // partner_worker_id 매칭
        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;
}

function hideReportForm(checkinId) {
    editingReportId = null;
    const formContainer = document.getElementById('reportForm_' + checkinId);
    const toggleBtn = document.getElementById('reportFormToggle_' + checkinId);
    if (formContainer) formContainer.classList.add('hidden');
    if (toggleBtn) toggleBtn.classList.remove('hidden');
}

async function submitWorkReport(checkinId, scheduleId) {
    const workContent = document.getElementById('reportContent_' + checkinId).value.trim();
    if (!workContent) { showToast('작업내용을 입력하세요', 'error'); return; }

    const workers = collectWorkers(checkinId);

    const body = {
        checkin_id: checkinId,
        schedule_id: scheduleId,
        report_date: new Date().toISOString().substring(0, 10),
        actual_workers: parseInt(document.getElementById('reportWorkers_' + checkinId).value) || 0,
        work_content: workContent,
        progress_rate: parseInt(document.getElementById('reportProgress_' + checkinId).value) || 0,
        issues: document.getElementById('reportIssues_' + checkinId).value.trim() || null,
        next_plan: document.getElementById('reportNextPlan_' + checkinId).value.trim() || null,
        workers: workers
    };

    try {
        if (editingReportId) {
            await api('/work-reports/' + editingReportId, { method: 'PUT', body: JSON.stringify(body) });
            showToast('업무현황이 수정되었습니다');
        } else {
            await api('/work-reports', { method: 'POST', body: JSON.stringify(body) });
            showToast('업무현황이 저장되었습니다');
        }
        editingReportId = null;
        renderScheduleCards();
    } catch(e) {
        showToast(e.message || '저장 실패', 'error');
    }
}

async function openEditReport(reportId, checkinId, scheduleId) {
    try {
        const r = await api('/work-reports/' + reportId);
        const report = r.data || r;
        showReportForm(checkinId, scheduleId, report);
    } catch(e) {
        showToast('보고 정보를 불러올 수 없습니다', 'error');
    }
}

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 doCheckOut(checkinId) {
    if (!confirm('작업을 종료하시겠습니까? 업무현황을 먼저 저장했는지 확인하세요.')) return;
    try {
        await api('/checkins/' + checkinId + '/checkout', { method: 'PUT' });
        showToast('작업 종료 (체크아웃) 완료');
        renderScheduleCards();
    } catch(e) {
        showToast(e.message || '체크아웃 실패', 'error');
    }
}

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

    // Check if partner account
    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();
}