/**
 * proxy-input.js — 대리입력 리뉴얼
 * Step 1: 날짜 선택 → 작업자 목록 (체크박스)
 * Step 2: 공통 입력 1개 → 선택된 전원 일괄 적용
 */

let currentDate = '';
let allWorkers = [];
let selectedIds = new Set();
let projects = [];
let workTypes = [];

// ===== Init =====
document.addEventListener('DOMContentLoaded', () => {
    currentDate = new Date().toISOString().substring(0, 10);
    document.getElementById('dateInput').value = currentDate;
    setTimeout(async () => {
        await loadDropdownData();
        await loadWorkers();
    }, 500);
});

async function loadDropdownData() {
    try {
        const [pRes, wRes] = await Promise.all([
            window.apiCall('/projects'),
            window.apiCall('/daily-work-reports/work-types')
        ]);
        projects = (pRes.data || pRes || []).filter(p => p.is_active !== 0);
        workTypes = (wRes.data || wRes || []).map(w => ({ id: w.id || w.work_type_id, name: w.name || w.work_type_name, ...w }));
    } catch (e) { console.warn('드롭다운 로드 실패:', e); }
}

// ===== Step 1: Worker List =====
async function loadWorkers() {
    currentDate = document.getElementById('dateInput').value;
    if (!currentDate) return;

    const list = document.getElementById('workerList');
    list.innerHTML = '<div class="pi-skeleton"></div><div class="pi-skeleton"></div>';
    selectedIds.clear();
    updateEditButton();

    try {
        const res = await window.apiCall('/proxy-input/daily-status?date=' + currentDate);
        if (!res.success) throw new Error(res.message);

        allWorkers = res.data.workers || [];
        const s = res.data.summary || {};
        document.getElementById('totalNum').textContent = s.total_active_workers || allWorkers.length;
        document.getElementById('doneNum').textContent = s.report_completed || 0;
        document.getElementById('missingNum').textContent = s.report_missing || 0;
        document.getElementById('vacNum').textContent = allWorkers.filter(w => w.vacation_type_code === 'ANNUAL_FULL').length;

        renderWorkerList();
    } catch (e) {
        list.innerHTML = '<div class="pi-empty"><i class="fas fa-exclamation-triangle text-2xl text-red-300"></i><p>데이터 로드 실패</p></div>';
    }
}

function renderWorkerList() {
    const list = document.getElementById('workerList');
    if (!allWorkers.length) {
        list.innerHTML = '<div class="pi-empty"><p>작업자가 없습니다</p></div>';
        return;
    }

    // 부서별 그룹핑
    const byDept = {};
    allWorkers.forEach(w => {
        const dept = w.department_name || '미배정';
        if (!byDept[dept]) byDept[dept] = [];
        byDept[dept].push(w);
    });

    let html = '';
    Object.keys(byDept).sort().forEach(dept => {
        html += `<div class="pi-dept-label">${esc(dept)}</div>`;
        byDept[dept].forEach(w => {
            const isFullVac = w.vacation_type_code === 'ANNUAL_FULL';
            const hasVac = !!w.vacation_type_code;
            const vacBadge = isFullVac ? '<span class="pi-badge vac">연차</span>'
                : hasVac ? `<span class="pi-badge vac-half">${esc(w.vacation_type_name)}</span>` : '';
            const doneBadge = w.has_report ? `<span class="pi-badge done">${w.total_report_hours}h</span>` : '<span class="pi-badge missing">미입력</span>';

            html += `
            <label class="pi-worker ${isFullVac ? 'disabled' : ''}">
                <input type="checkbox" class="pi-check" value="${w.user_id}"
                    ${isFullVac ? 'disabled' : ''}
                    onchange="onWorkerCheck(${w.user_id}, this.checked)">
                <div class="pi-worker-info">
                    <span class="pi-worker-name">${esc(w.worker_name)}</span>
                    <span class="pi-worker-job">${esc(w.job_type || '')}</span>
                </div>
                <div class="pi-worker-badges">${vacBadge}${doneBadge}</div>
            </label>`;
        });
    });
    list.innerHTML = html;
}

function onWorkerCheck(userId, checked) {
    if (checked) selectedIds.add(userId);
    else selectedIds.delete(userId);
    updateEditButton();
}

function toggleSelectAll(checked) {
    allWorkers.forEach(w => {
        if (w.vacation_type_code === 'ANNUAL_FULL') return;
        const cb = document.querySelector(`.pi-check[value="${w.user_id}"]`);
        if (cb) { cb.checked = checked; onWorkerCheck(w.user_id, checked); }
    });
}

function updateEditButton() {
    const btn = document.getElementById('editBtn');
    const n = selectedIds.size;
    btn.disabled = n === 0;
    document.getElementById('editBtnText').textContent = n > 0 ? `선택 작업자 편집 (${n}명)` : '작업자를 선택하세요';
}

// ===== Step 2: Bulk Edit (공통 입력 1개) =====
function openEditMode() {
    if (selectedIds.size === 0) return;

    const selected = allWorkers.filter(w => selectedIds.has(w.user_id));
    document.getElementById('editTitle').textContent = `일괄 편집 (${selected.length}명)`;

    // 프로젝트/공종 드롭다운 채우기
    const projSel = document.getElementById('bulkProject');
    projSel.innerHTML = '<option value="">프로젝트 선택 *</option>' + projects.map(p => `<option value="${p.project_id}">${esc(p.project_name)}</option>`).join('');

    const typeSel = document.getElementById('bulkWorkType');
    typeSel.innerHTML = '<option value="">공종 선택 *</option>' + workTypes.map(t => `<option value="${t.id}">${esc(t.name)}</option>`).join('');

    // 적용 대상 목록
    document.getElementById('targetWorkers').innerHTML = selected.map(w =>
        `<span class="pi-target-chip">${esc(w.worker_name)}</span>`
    ).join('');

    // 기본값
    document.getElementById('bulkHours').value = '8';
    document.getElementById('bulkDefect').value = '0';
    document.getElementById('bulkNote').value = '';

    document.getElementById('step1').classList.add('hidden');
    document.getElementById('step2').classList.remove('hidden');
}

function closeEditMode() {
    document.getElementById('step2').classList.add('hidden');
    document.getElementById('step1').classList.remove('hidden');
}

// ===== Save =====
async function saveAll() {
    const projId = document.getElementById('bulkProject').value;
    const wtypeId = document.getElementById('bulkWorkType').value;
    const hours = parseFloat(document.getElementById('bulkHours').value) || 0;
    const defect = parseFloat(document.getElementById('bulkDefect').value) || 0;
    const note = document.getElementById('bulkNote').value.trim();

    if (!projId || !wtypeId) {
        showToast('프로젝트와 공종을 선택하세요', 'error');
        return;
    }
    if (hours <= 0) {
        showToast('근무시간을 입력하세요', 'error');
        return;
    }
    if (defect > hours) {
        showToast('부적합 시간이 근무시간을 초과합니다', 'error');
        return;
    }

    const btn = document.getElementById('saveBtn');
    btn.disabled = true;
    document.getElementById('saveBtnText').textContent = '저장 중...';

    const entries = Array.from(selectedIds).map(uid => ({
        user_id: uid,
        project_id: parseInt(projId),
        work_type_id: parseInt(wtypeId),
        work_hours: hours,
        defect_hours: defect,
        note: note,
        start_time: '08:00',
        end_time: '17:00',
        work_status_id: defect > 0 ? 2 : 1
    }));

    try {
        const res = await window.apiCall('/proxy-input', 'POST', {
            session_date: currentDate,
            entries
        });

        if (res.success) {
            showToast(res.message || `${entries.length}명 저장 완료`, 'success');
            closeEditMode();
            selectedIds.clear();
            updateEditButton();
            await loadWorkers();
        } else {
            showToast(res.message || '저장 실패', 'error');
        }
    } catch (e) {
        showToast('저장 실패: ' + (e.message || e), 'error');
    }

    btn.disabled = false;
    document.getElementById('saveBtnText').textContent = '전체 저장';
}

function esc(s) { return (s || '').replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;'); }