/**
 * issues-archive.js — 폐기함 페이지 스크립트
 */

let currentUser = null;
let issues = [];
let projects = [];
let filteredIssues = [];

// API 로드 후 초기화 함수
async function initializeArchive() {
    const token = TokenManager.getToken();
    if (!token) {
        window.location.href = '/index.html';
        return;
    }

    try {
        const user = await AuthAPI.getCurrentUser();
        currentUser = user;
        localStorage.setItem('sso_user', JSON.stringify(user));

        // 공통 헤더 초기화
        await window.commonHeader.init(user, 'issues_archive');

        // 페이지 접근 권한 체크
        setTimeout(() => {
            if (!canAccessPage('issues_archive')) {
                alert('폐기함 페이지에 접근할 권한이 없습니다.');
                window.location.href = '/index.html';
                return;
            }
        }, 500);

        // 데이터 로드
        await loadProjects();
        await loadArchivedIssues();

    } catch (error) {
        console.error('인증 실패:', error);
        TokenManager.removeToken();
        TokenManager.removeUser();
        window.location.href = '/index.html';
    }
}

// 프로젝트 로드
async function loadProjects() {
    try {
        const apiUrl = window.API_BASE_URL || '/api';
        const response = await fetch(`${apiUrl}/projects/`, {
            headers: {
                'Authorization': `Bearer ${TokenManager.getToken()}`,
                'Content-Type': 'application/json'
            }
        });

        if (response.ok) {
            projects = await response.json();
            updateProjectFilter();
        }
    } catch (error) {
        console.error('프로젝트 로드 실패:', error);
    }
}

// 보관된 부적합 로드
async function loadArchivedIssues() {
    try {
        let endpoint = '/api/issues/';

        // 관리자인 경우 전체 부적합 조회 API 사용
        if (currentUser.role === 'admin') {
            endpoint = '/api/issues/admin/all';
        }

        const response = await fetch(endpoint, {
            headers: {
                'Authorization': `Bearer ${TokenManager.getToken()}`,
                'Content-Type': 'application/json'
            }
        });

        if (response.ok) {
            const allIssues = await response.json();
            // 폐기된 부적합만 필터링 (폐기함 전용)
            issues = allIssues.filter(issue =>
                issue.review_status === 'disposed'
            );

            filterIssues();
            updateStatistics();
            renderCharts();
        } else {
            throw new Error('부적합 목록을 불러올 수 없습니다.');
        }
    } catch (error) {
        console.error('부적합 로드 실패:', error);
        alert('부적합 목록을 불러오는데 실패했습니다.');
    }
}

// 필터링 및 표시
function filterIssues() {
    const projectFilter = document.getElementById('projectFilter').value;
    const statusFilter = document.getElementById('statusFilter').value;
    const periodFilter = document.getElementById('periodFilter').value;
    const categoryFilter = document.getElementById('categoryFilter').value;
    const searchInput = document.getElementById('searchInput').value.toLowerCase();

    filteredIssues = issues.filter(issue => {
        if (projectFilter && issue.project_id != projectFilter) return false;
        if (statusFilter && issue.status !== statusFilter) return false;
        if (categoryFilter && issue.category !== categoryFilter) return false;

        // 기간 필터
        if (periodFilter) {
            const issueDate = new Date(issue.updated_at || issue.created_at);
            const now = new Date();

            switch (periodFilter) {
                case 'week':
                    const weekAgo = new Date(now.getTime() - 7 * 24 * 60 * 60 * 1000);
                    if (issueDate < weekAgo) return false;
                    break;
                case 'month':
                    const monthAgo = new Date(now.getFullYear(), now.getMonth() - 1, now.getDate());
                    if (issueDate < monthAgo) return false;
                    break;
                case 'quarter':
                    const quarterAgo = new Date(now.getFullYear(), now.getMonth() - 3, now.getDate());
                    if (issueDate < quarterAgo) return false;
                    break;
                case 'year':
                    const yearAgo = new Date(now.getFullYear() - 1, now.getMonth(), now.getDate());
                    if (issueDate < yearAgo) return false;
                    break;
            }
        }

        if (searchInput) {
            const searchText = `${issue.description} ${issue.reporter?.username || ''}`.toLowerCase();
            if (!searchText.includes(searchInput)) return false;
        }

        return true;
    });

    sortIssues();
    displayIssues();
}

function sortIssues() {
    const sortOrder = document.getElementById('sortOrder').value;

    filteredIssues.sort((a, b) => {
        switch (sortOrder) {
            case 'newest':
                return new Date(b.report_date) - new Date(a.report_date);
            case 'oldest':
                return new Date(a.report_date) - new Date(b.report_date);
            case 'completed':
                return new Date(b.disposed_at || b.report_date) - new Date(a.disposed_at || a.report_date);
            case 'category':
                return (a.category || '').localeCompare(b.category || '');
            default:
                return new Date(b.report_date) - new Date(a.report_date);
        }
    });
}

function displayIssues() {
    const container = document.getElementById('issuesList');
    const emptyState = document.getElementById('emptyState');

    if (filteredIssues.length === 0) {
        container.innerHTML = '';
        emptyState.classList.remove('hidden');
        return;
    }

    emptyState.classList.add('hidden');

    container.innerHTML = filteredIssues.map(issue => {
        const project = projects.find(p => p.id === issue.project_id);

        // 폐기함은 폐기된 것만 표시
        const completedDate = issue.disposed_at ? new Date(issue.disposed_at).toLocaleDateString('ko-KR') : 'Invalid Date';
        const statusText = '폐기';
        const cardClass = 'archived-card';

        return `
            <div class="issue-card p-6 ${cardClass} cursor-pointer"
                 onclick="viewArchivedIssue(${issue.id})">
                <div class="flex items-start justify-between">
                    <div class="flex-1">
                        <div class="flex items-center space-x-3 mb-2">
                            <span class="badge badge-${getStatusBadgeClass(issue.status)}">${getStatusText(issue.status)}</span>
                            ${project ? `<span class="text-sm text-gray-500">${project.project_name}</span>` : ''}
                            <span class="text-sm text-gray-400">${completedDate}</span>
                        </div>

                        <h3 class="text-lg font-medium text-gray-900 mb-2">${issue.description}</h3>

                        <div class="flex items-center text-sm text-gray-500 space-x-4">
                            <span><i class="fas fa-user mr-1"></i>${issue.reporter?.username || '알 수 없음'}</span>
                            ${issue.category ? `<span><i class="fas fa-tag mr-1"></i>${getCategoryText(issue.category)}</span>` : ''}
                            <span><i class="fas fa-clock mr-1"></i>${statusText}: ${completedDate}</span>
                        </div>
                    </div>

                    <div class="flex items-center space-x-2 ml-4">
                        <i class="fas fa-${getStatusIcon(issue.status)} text-2xl ${getStatusColor(issue.status)}"></i>
                    </div>
                </div>
            </div>
        `;
    }).join('');
}

// 통계 업데이트
function updateStatistics() {
    const completed = issues.filter(issue => issue.status === 'completed').length;
    const archived = issues.filter(issue => issue.status === 'archived').length;
    const cancelled = issues.filter(issue => issue.status === 'cancelled').length;

    const thisMonth = issues.filter(issue => {
        const issueDate = new Date(issue.updated_at || issue.created_at);
        const now = new Date();
        return issueDate.getMonth() === now.getMonth() && issueDate.getFullYear() === now.getFullYear();
    }).length;

    document.getElementById('completedCount').textContent = completed;
    document.getElementById('archivedCount').textContent = archived;
    document.getElementById('cancelledCount').textContent = cancelled;
    document.getElementById('thisMonthCount').textContent = thisMonth;
}

// 차트 렌더링 (간단한 텍스트 기반)
function renderCharts() {
    renderMonthlyChart();
    renderCategoryChart();
}

function renderMonthlyChart() {
    const canvas = document.getElementById('monthlyChart');
    const ctx = canvas.getContext('2d');

    canvas.width = canvas.offsetWidth;
    canvas.height = canvas.offsetHeight;

    ctx.fillStyle = '#374151';
    ctx.font = '16px Inter';
    ctx.textAlign = 'center';
    ctx.fillText('월별 완료 현황 차트', canvas.width / 2, canvas.height / 2);
    ctx.font = '12px Inter';
    ctx.fillText('(차트 라이브러리 구현 예정)', canvas.width / 2, canvas.height / 2 + 20);
}

function renderCategoryChart() {
    const canvas = document.getElementById('categoryChart');
    const ctx = canvas.getContext('2d');

    canvas.width = canvas.offsetWidth;
    canvas.height = canvas.offsetHeight;

    ctx.fillStyle = '#374151';
    ctx.font = '16px Inter';
    ctx.textAlign = 'center';
    ctx.fillText('카테고리별 분포 차트', canvas.width / 2, canvas.height / 2);
    ctx.font = '12px Inter';
    ctx.fillText('(차트 라이브러리 구현 예정)', canvas.width / 2, canvas.height / 2 + 20);
}

// 기타 함수들
function generateReport() {
    alert('통계 보고서를 생성합니다.');
}

function cleanupArchive() {
    if (confirm('오래된 보관 데이터를 정리하시겠습니까?')) {
        alert('데이터 정리가 완료되었습니다.');
    }
}

function viewArchivedIssue(issueId) {
    window.location.href = `/issue-view.html#detail-${issueId}`;
}

// 유틸리티 함수들
function updateProjectFilter() {
    const projectFilter = document.getElementById('projectFilter');
    projectFilter.innerHTML = '<option value="">전체 프로젝트</option>';

    projects.forEach(project => {
        const option = document.createElement('option');
        option.value = project.id;
        option.textContent = project.project_name;
        projectFilter.appendChild(option);
    });
}

// 페이지 전용 유틸리티 (shared에 없는 것들)
function getStatusIcon(status) {
    const iconMap = {
        'completed': 'check-circle',
        'archived': 'archive',
        'cancelled': 'times-circle'
    };
    return iconMap[status] || 'archive';
}

function getStatusColor(status) {
    const colorMap = {
        'completed': 'text-green-500',
        'archived': 'text-gray-500',
        'cancelled': 'text-red-500'
    };
    return colorMap[status] || 'text-gray-500';
}

// API 스크립트 동적 로딩
const script = document.createElement('script');
script.src = '/static/js/api.js?v=20260213';
script.onload = function() {
    console.log('API 스크립트 로드 완료 (issues-archive.html)');
    initializeArchive();
};
script.onerror = function() {
    console.error('API 스크립트 로드 실패');
};
document.head.appendChild(script);