/**
 * m-inbox.js — 수신함 모바일 페이지 로직
 */

var currentUser = null;
var issues = [];
var projects = [];
var filteredIssues = [];
var currentIssueId = null;
var statusPhotoBase64 = null;

// ===== 초기화 =====
async function initialize() {
    currentUser = await mCheckAuth();
    if (!currentUser) return;

    await loadProjects();
    await loadIssues();
    renderBottomNav('inbox');
    hideLoading();
}

async function loadProjects() {
    try {
        var resp = await fetch(API_BASE_URL + '/projects/', {
            headers: { 'Authorization': 'Bearer ' + TokenManager.getToken() }
        });
        if (resp.ok) {
            projects = await resp.json();
            var sel = document.getElementById('projectFilter');
            sel.innerHTML = '<option value="">전체 프로젝트</option>';
            projects.forEach(function (p) {
                sel.innerHTML += '<option value="' + p.id + '">' + escapeHtml(p.project_name) + '</option>';
            });
        }
    } catch (e) { console.error('프로젝트 로드 실패:', e); }
}

async function loadIssues() {
    try {
        var pid = document.getElementById('projectFilter').value;
        var url = API_BASE_URL + '/inbox/' + (pid ? '?project_id=' + pid : '');
        var resp = await fetch(url, {
            headers: { 'Authorization': 'Bearer ' + TokenManager.getToken() }
        });
        if (resp.ok) {
            issues = await resp.json();
            filterIssues();
            await loadStatistics();
        }
    } catch (e) { console.error('수신함 로드 실패:', e); }
}

async function loadStatistics() {
    try {
        var todayStart = getKSTToday();

        var todayNewCount = issues.filter(function (i) {
            var d = getKSTDate(new Date(i.report_date));
            return new Date(d.getFullYear(), d.getMonth(), d.getDate()) >= todayStart;
        }).length;

        var todayProcessedCount = 0;
        try {
            var resp = await fetch(API_BASE_URL + '/inbox/statistics', {
                headers: { 'Authorization': 'Bearer ' + TokenManager.getToken() }
            });
            if (resp.ok) { var s = await resp.json(); todayProcessedCount = s.today_processed || 0; }
        } catch (e) {}

        var unresolvedCount = issues.filter(function (i) {
            var d = getKSTDate(new Date(i.report_date));
            return new Date(d.getFullYear(), d.getMonth(), d.getDate()) < todayStart;
        }).length;

        document.getElementById('todayNewCount').textContent = todayNewCount;
        document.getElementById('todayProcessedCount').textContent = todayProcessedCount;
        document.getElementById('unresolvedCount').textContent = unresolvedCount;
    } catch (e) { console.error('통계 로드 오류:', e); }
}

function filterIssues() {
    var pid = document.getElementById('projectFilter').value;
    filteredIssues = pid ? issues.filter(function (i) { return i.project_id == pid; }) : issues.slice();
    filteredIssues.sort(function (a, b) { return new Date(b.report_date) - new Date(a.report_date); });
    renderIssues();
}

// ===== 렌더링 =====
function renderIssues() {
    var container = document.getElementById('issuesList');
    var empty = document.getElementById('emptyState');

    if (!filteredIssues.length) { container.innerHTML = ''; empty.classList.remove('hidden'); return; }
    empty.classList.add('hidden');

    container.innerHTML = filteredIssues.map(function (issue) {
        var project = projects.find(function (p) { return p.id === issue.project_id; });
        var photos = getPhotoPaths(issue);
        var photoCount = photos.length;

        return '<div class="m-card border-blue">' +
            '<div class="m-card-header">' +
                '<div><span class="m-badge review"><i class="fas fa-clock"></i> 검토 대기</span>' +
                (project ? '<span class="m-card-project">' + escapeHtml(project.project_name) + '</span>' : '') +
                '</div>' +
                '<span style="font-size:11px;color:#9ca3af">ID: ' + issue.id + '</span>' +
            '</div>' +
            '<div class="m-card-title text-ellipsis-3">' + escapeHtml(issue.final_description || issue.description) + '</div>' +
            '<div class="m-card-body">' +
                '<div style="display:flex;gap:12px;font-size:12px;color:#6b7280;margin-bottom:8px;flex-wrap:wrap">' +
                    '<span><i class="fas fa-user" style="color:#3b82f6;margin-right:3px"></i>' + escapeHtml(issue.reporter?.username || '알 수 없음') + '</span>' +
                    '<span><i class="fas fa-tag" style="color:#22c55e;margin-right:3px"></i>' + getCategoryText(issue.category || issue.final_category) + '</span>' +
                    '<span><i class="fas fa-camera" style="color:#8b5cf6;margin-right:3px"></i>' + (photoCount > 0 ? photoCount + '장' : '없음') + '</span>' +
                    '<span><i class="fas fa-clock" style="color:#f59e0b;margin-right:3px"></i>' + getTimeAgo(issue.report_date) + '</span>' +
                '</div>' +
                (photos.length ? renderPhotoThumbs(photos) : '') +
                (issue.detail_notes ? '<div style="font-size:12px;color:#6b7280;margin-top:6px;font-style:italic">"' + escapeHtml(issue.detail_notes) + '"</div>' : '') +
            '</div>' +
            '<div class="m-action-row">' +
                '<button class="m-action-btn red" onclick="openDisposeSheet(' + issue.id + ')"><i class="fas fa-trash"></i>폐기</button>' +
                '<button class="m-action-btn blue" onclick="openReviewSheet(' + issue.id + ')"><i class="fas fa-edit"></i>검토</button>' +
                '<button class="m-action-btn green" onclick="openStatusSheet(' + issue.id + ')"><i class="fas fa-check"></i>확인</button>' +
            '</div>' +
        '</div>';
    }).join('');
}

// ===== 폐기 =====
function openDisposeSheet(issueId) {
    currentIssueId = issueId;
    document.getElementById('disposalReason').value = 'duplicate';
    document.getElementById('customReason').value = '';
    document.getElementById('customReasonDiv').classList.add('hidden');
    document.getElementById('selectedDuplicateId').value = '';
    toggleDisposalFields();
    openSheet('dispose');
    loadManagementIssues();
}

function toggleDisposalFields() {
    var reason = document.getElementById('disposalReason').value;
    document.getElementById('customReasonDiv').classList.toggle('hidden', reason !== 'custom');
    document.getElementById('duplicateDiv').classList.toggle('hidden', reason !== 'duplicate');
    if (reason === 'duplicate') loadManagementIssues();
}

async function loadManagementIssues() {
    var issue = issues.find(function (i) { return i.id === currentIssueId; });
    var pid = issue ? issue.project_id : null;

    try {
        var resp = await fetch(API_BASE_URL + '/inbox/management-issues' + (pid ? '?project_id=' + pid : ''), {
            headers: { 'Authorization': 'Bearer ' + TokenManager.getToken() }
        });
        if (!resp.ok) throw new Error('로드 실패');
        var list = await resp.json();
        var container = document.getElementById('managementIssuesList');

        if (!list.length) {
            container.innerHTML = '<div style="padding:16px;text-align:center;color:#9ca3af;font-size:13px">동일 프로젝트의 관리함 이슈가 없습니다.</div>';
            return;
        }

        container.innerHTML = list.map(function (mi) {
            return '<div style="padding:10px 12px;border-bottom:1px solid #f3f4f6;font-size:13px" onclick="selectDuplicate(' + mi.id + ',this)">' +
                '<div style="font-weight:500;color:#111827;margin-bottom:2px">' + escapeHtml(mi.description || mi.final_description) + '</div>' +
                '<div style="display:flex;gap:6px;color:#9ca3af;font-size:11px">' +
                    '<span>' + getCategoryText(mi.category || mi.final_category) + '</span>' +
                    '<span>신고자: ' + escapeHtml(mi.reporter_name) + '</span>' +
                    '<span>ID: ' + mi.id + '</span>' +
                '</div></div>';
        }).join('');
    } catch (e) {
        document.getElementById('managementIssuesList').innerHTML = '<div style="padding:16px;text-align:center;color:#ef4444;font-size:13px">목록 로드 실패</div>';
    }
}

function selectDuplicate(id, el) {
    var items = document.getElementById('managementIssuesList').children;
    for (var i = 0; i < items.length; i++) items[i].style.background = '';
    el.style.background = '#eff6ff';
    document.getElementById('selectedDuplicateId').value = id;
}

async function confirmDispose() {
    if (!currentIssueId) return;
    var reason = document.getElementById('disposalReason').value;
    var customReason = document.getElementById('customReason').value;
    var duplicateId = document.getElementById('selectedDuplicateId').value;

    if (reason === 'custom' && !customReason.trim()) { showToast('폐기 사유를 입력해주세요.', 'warning'); return; }
    if (reason === 'duplicate' && !duplicateId) { showToast('중복 대상을 선택해주세요.', 'warning'); return; }

    try {
        var body = { disposal_reason: reason, custom_disposal_reason: reason === 'custom' ? customReason : null };
        if (reason === 'duplicate' && duplicateId) body.duplicate_of_issue_id = parseInt(duplicateId);

        var resp = await fetch(API_BASE_URL + '/inbox/' + currentIssueId + '/dispose', {
            method: 'POST',
            headers: { 'Authorization': 'Bearer ' + TokenManager.getToken(), 'Content-Type': 'application/json' },
            body: JSON.stringify(body)
        });

        if (resp.ok) {
            showToast('폐기 처리되었습니다.', 'success');
            closeSheet('dispose');
            await loadIssues();
        } else {
            var err = await resp.json();
            throw new Error(err.detail || '폐기 실패');
        }
    } catch (e) { showToast('오류: ' + e.message, 'error'); }
}

// ===== 검토 =====
function openReviewSheet(issueId) {
    currentIssueId = issueId;
    var issue = issues.find(function (i) { return i.id === issueId; });
    if (!issue) return;

    var project = projects.find(function (p) { return p.id === issue.project_id; });

    // 원본 정보
    document.getElementById('originalInfo').innerHTML =
        '<div style="margin-bottom:4px"><strong>프로젝트:</strong> ' + (project ? escapeHtml(project.project_name) : '미지정') + '</div>' +
        '<div style="margin-bottom:4px"><strong>신고자:</strong> ' + escapeHtml(issue.reporter?.username || '알 수 없음') + '</div>' +
        '<div><strong>등록일:</strong> ' + formatKSTDate(issue.report_date) + '</div>';

    // 프로젝트 select
    var sel = document.getElementById('reviewProjectId');
    sel.innerHTML = '<option value="">프로젝트 선택</option>';
    projects.forEach(function (p) {
        sel.innerHTML += '<option value="' + p.id + '"' + (p.id === issue.project_id ? ' selected' : '') + '>' + escapeHtml(p.project_name) + '</option>';
    });

    document.getElementById('reviewCategory').value = issue.category || issue.final_category || 'etc';
    var desc = issue.description || issue.final_description || '';
    var lines = desc.split('\n');
    document.getElementById('reviewTitle').value = lines[0] || '';
    document.getElementById('reviewDescription').value = lines.slice(1).join('\n') || desc;

    openSheet('review');
}

async function saveReview() {
    if (!currentIssueId) return;
    var projectId = document.getElementById('reviewProjectId').value;
    var category = document.getElementById('reviewCategory').value;
    var title = document.getElementById('reviewTitle').value.trim();
    var description = document.getElementById('reviewDescription').value.trim();

    if (!title) { showToast('부적합명을 입력해주세요.', 'warning'); return; }

    var combined = title + (description ? '\n' + description : '');

    try {
        var resp = await fetch(API_BASE_URL + '/inbox/' + currentIssueId + '/review', {
            method: 'POST',
            headers: { 'Authorization': 'Bearer ' + TokenManager.getToken(), 'Content-Type': 'application/json' },
            body: JSON.stringify({
                project_id: projectId ? parseInt(projectId) : null,
                category: category,
                description: combined
            })
        });

        if (resp.ok) {
            showToast('검토가 완료되었습니다.', 'success');
            closeSheet('review');
            await loadIssues();
        } else {
            var err = await resp.json();
            throw new Error(err.detail || '검토 실패');
        }
    } catch (e) { showToast('오류: ' + e.message, 'error'); }
}

// ===== 확인 (상태 결정) =====
function openStatusSheet(issueId) {
    currentIssueId = issueId;
    document.querySelectorAll('input[name="finalStatus"]').forEach(function (r) { r.checked = false; });
    document.querySelectorAll('.m-radio-item').forEach(function (el) { el.classList.remove('selected'); });
    document.getElementById('completionSection').classList.add('hidden');
    statusPhotoBase64 = null;
    document.getElementById('statusPhotoInput').value = '';
    document.getElementById('statusPhotoPreview').classList.add('hidden');
    document.getElementById('solutionInput').value = '';
    document.getElementById('responsibleDepartmentInput').value = '';
    document.getElementById('responsiblePersonInput').value = '';
    openSheet('status');
}

function selectStatus(value) {
    document.querySelectorAll('.m-radio-item').forEach(function (el) { el.classList.remove('selected'); });
    var radio = document.querySelector('input[name="finalStatus"][value="' + value + '"]');
    if (radio) { radio.checked = true; radio.closest('.m-radio-item').classList.add('selected'); }
    document.getElementById('completionSection').classList.toggle('hidden', value !== 'completed');
}

function handleStatusPhoto(event) {
    var file = event.target.files[0];
    if (!file) return;
    if (file.size > 5 * 1024 * 1024) { showToast('5MB 이하 파일만 가능합니다.', 'warning'); event.target.value = ''; return; }
    var reader = new FileReader();
    reader.onload = function (e) {
        statusPhotoBase64 = e.target.result.split(',')[1];
        var preview = document.getElementById('statusPhotoPreview');
        preview.src = e.target.result;
        preview.classList.remove('hidden');
    };
    reader.readAsDataURL(file);
}

async function confirmStatus() {
    if (!currentIssueId) return;
    var selected = document.querySelector('input[name="finalStatus"]:checked');
    if (!selected) { showToast('상태를 선택해주세요.', 'warning'); return; }

    var reviewStatus = selected.value;
    var body = { review_status: reviewStatus };

    if (reviewStatus === 'completed') {
        var solution = document.getElementById('solutionInput').value.trim();
        var dept = document.getElementById('responsibleDepartmentInput').value;
        var person = document.getElementById('responsiblePersonInput').value.trim();
        if (solution) body.solution = solution;
        if (dept) body.responsible_department = dept;
        if (person) body.responsible_person = person;
        if (statusPhotoBase64) body.completion_photo = statusPhotoBase64;
    }

    try {
        var resp = await fetch(API_BASE_URL + '/inbox/' + currentIssueId + '/status', {
            method: 'POST',
            headers: { 'Authorization': 'Bearer ' + TokenManager.getToken(), 'Content-Type': 'application/json' },
            body: JSON.stringify(body)
        });

        if (resp.ok) {
            showToast('상태가 변경되었습니다.', 'success');
            closeSheet('status');
            await loadIssues();
        } else {
            var err = await resp.json();
            throw new Error(err.detail || '상태 변경 실패');
        }
    } catch (e) { showToast('오류: ' + e.message, 'error'); }
}

// ===== 시작 =====
document.addEventListener('DOMContentLoaded', initialize);