/* page-auto-import.js — Turn C
 * 抽自 auto_import_index.html 原 inline <script>
 * 邏輯不變：Google Drive 設定 / 手動上傳 / 任務輪詢
 */
(function () {
  'use strict';

        // 載入配置
        async function loadConfig() {
            try {
                const response = await fetch('/api/import_config');
                const result = await response.json();

                if (result.success) {
                    document.getElementById('folderPath').value = result.data.folder_path || '';
                    document.getElementById('filePattern').value = result.data.file_pattern || '';
                }
            } catch (error) {
                console.error('載入配置失敗:', error);
            }
        }

        // 儲存配置
        async function saveConfig() {
            const folderPath = document.getElementById('folderPath').value;
            const filePattern = document.getElementById('filePattern').value;

            try {
                const response = await fetch('/api/import_config', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/json'
                    },
                    body: JSON.stringify({
                        folder_path: folderPath,
                        file_pattern: filePattern
                    })
                });

                const result = await response.json();

                if (result.success) {
                    showAlert('configAlert', 'success', '<i class="fas fa-check-circle me-2"></i>配置已儲存');
                } else {
                    showAlert('configAlert', 'danger', '<i class="fas fa-exclamation-circle me-2"></i>' + result.message);
                }
            } catch (error) {
                showAlert('configAlert', 'danger', '<i class="fas fa-exclamation-circle me-2"></i>儲存配置失敗: ' + error.message);
            }
        }

        // 測試連接
        async function testConnection() {
            showAlert('configAlert', 'info', '<i class="fas fa-spinner fa-spin me-2"></i>正在測試 Google Drive 連接...');

            try {
                const response = await fetch('/api/test_drive_connection', {
                    method: 'POST'
                });

                const result = await response.json();

                if (result.success) {
                    showAlert('configAlert', 'success', '<i class="fas fa-check-circle me-2"></i>' + result.message);
                } else {
                    showAlert('configAlert', 'danger', '<i class="fas fa-exclamation-circle me-2"></i>' + result.message);
                }
            } catch (error) {
                showAlert('configAlert', 'danger', '<i class="fas fa-exclamation-circle me-2"></i>測試失敗: ' + error.message);
            }
        }

        // 列出檔案
        async function listFiles() {
            const folderPath = document.getElementById('folderPath').value;
            const filePattern = document.getElementById('filePattern').value;

            showAlert('configAlert', 'info', '<i class="fas fa-spinner fa-spin me-2"></i>正在列出 Google Drive 檔案...');

            try {
                const response = await fetch('/api/list_drive_files', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/json'
                    },
                    body: JSON.stringify({
                        folder_path: folderPath,
                        file_pattern: filePattern
                    })
                });

                const result = await response.json();

                if (result.success) {
                    const fileList = result.data.map(f => `<li class="mb-1"><i class="fas fa-file-excel me-1"></i>${f.name}</li>`).join('');
                    showAlert('configAlert', 'success', `<i class="fas fa-check-circle me-2"></i>找到 ${result.count} 個檔案:<ul class="mt-2 mb-0">${fileList || '<li>無</li>'}</ul>`);
                } else {
                    showAlert('configAlert', 'danger', '<i class="fas fa-exclamation-circle me-2"></i>' + result.message);
                }
            } catch (error) {
                showAlert('configAlert', 'danger', '<i class="fas fa-exclamation-circle me-2"></i>列出檔案失敗: ' + error.message);
            }
        }

        // 手動匯入
        async function manualImport() {
            if (!confirm('確定要立即執行匯入嗎？')) {
                return;
            }

            showAlert('configAlert', 'info', '<i class="fas fa-spinner fa-spin me-2"></i>正在執行匯入，請稍候...');

            try {
                const response = await fetch('/api/manual_import', {
                    method: 'POST'
                });

                const result = await response.json();

                if (result.success) {
                    showAlert('configAlert', 'success', '<i class="fas fa-check-circle me-2"></i>' + result.message);
                    setTimeout(() => loadJobs(), 1000);
                } else {
                    showAlert('configAlert', 'danger', '<i class="fas fa-exclamation-circle me-2"></i>' + result.message);
                }
            } catch (error) {
                showAlert('configAlert', 'danger', '<i class="fas fa-exclamation-circle me-2"></i>匯入失敗: ' + error.message);
            }
        }

        // 載入任務列表
        async function loadJobs() {
            document.getElementById('jobsLoading').style.display = 'block';
            document.getElementById('jobsEmpty').style.display = 'none';
            document.getElementById('jobsTableContainer').style.display = 'none';

            try {
                const response = await fetch('/api/import_jobs?limit=50');
                const result = await response.json();

                document.getElementById('jobsLoading').style.display = 'none';

                if (result.success && result.data.length > 0) {
                    document.getElementById('jobsTableContainer').style.display = 'block';
                    renderJobs(result.data);
                } else {
                    document.getElementById('jobsEmpty').style.display = 'block';
                }
            } catch (error) {
                document.getElementById('jobsLoading').style.display = 'none';
                document.getElementById('jobsEmpty').style.display = 'block';
                console.error('載入任務列表失敗:', error);
            }
        }

        // 渲染任務列表
        function renderJobs(jobs) {
            const tbody = document.getElementById('jobsTableBody');
            tbody.innerHTML = '';

            jobs.forEach(job => {
                const tr = document.createElement('tr');
                const fileName = job.drive_file_name || 'N/A';
                const errorMsg = job.error_message || '-';

                tr.innerHTML = `
                    <td class="fw-bold">#${job.id}</td>
                    <td>
                        <i class="fas fa-file-excel text-success me-1"></i>${escapeHtml(fileName)}
                    </td>
                    <td>
                        <span class="badge badge-${job.status}">${getStatusText(job.status)}</span>
                    </td>
                    <td style="min-width: 150px;">
                        <div class="progress mb-1">
                            <div class="progress-bar" role="progressbar" style="width: ${job.progress_percent}%"
                                 aria-valuenow="${job.progress_percent}" aria-valuemin="0" aria-valuemax="100">
                            </div>
                        </div>
                        <small class="text-muted">${Math.round(job.progress_percent)}% - ${escapeHtml(job.current_step || '')}</small>
                    </td>
                    <td class="text-center">
                        <span class="badge bg-success">${job.success_rows || 0}</span> /
                        <span class="badge bg-secondary">${job.total_rows || 0}</span>
                    </td>
                    <td><small>${formatTime(job.started_at)}</small></td>
                    <td><small>${formatTime(job.completed_at)}</small></td>
                    <td class="error-cell"><small class="text-danger">${escapeHtml(errorMsg)}</small></td>
                    <td class="text-center">
                        ${(job.status === 'downloading' || job.status === 'importing')
                        ? `<button class="btn btn-sm btn-outline-danger" onclick="failJob(${job.id})">
                                   <i class="fas fa-times"></i>
                               </button>`
                        : '-'}
                    </td>
                `;
                tbody.appendChild(tr);
            });
        }

        // 轉義 HTML 特殊字元
        function escapeHtml(text) {
            if (!text) return '';
            const div = document.createElement('div');
            div.textContent = text;
            return div.innerHTML;
        }

        // 取得狀態文字
        function getStatusText(status) {
            const statusMap = {
                'pending': '⏳ 等待中',
                'downloading': '⬇️ 下載中',
                'importing': '📥 匯入中',
                'completed': '✅ 已完成',
                'failed': '❌ 失敗'
            };
            return statusMap[status] || status;
        }

        // 格式化時間
        function formatTime(timeStr) {
            if (!timeStr) return '-';
            const date = new Date(timeStr);
            return date.toLocaleString('zh-TW', {
                year: 'numeric',
                month: '2-digit',
                day: '2-digit',
                hour: '2-digit',
                minute: '2-digit'
            });
        }

        // 顯示提示
        function showAlert(elementId, type, message) {
            const alertDiv = document.getElementById(elementId);
            alertDiv.innerHTML = `
                <div class="alert alert-${type} alert-dismissible fade show" role="alert">
                    ${message}
                    <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
                </div>
            `;

            if (type === 'success' || type === 'danger') {
                setTimeout(() => {
                    const alert = alertDiv.querySelector('.alert');
                    if (alert) {
                        const bsAlert = new bootstrap.Alert(alert);
                        bsAlert.close();
                    }
                }, 5000);
            }
        }

        // 手動上傳檔案
        async function uploadManualFile() {
            const fileInput = document.getElementById('manualUploadFile');
            const file = fileInput.files[0];

            if (!file) {
                showAlert('uploadAlert', 'warning', '<i class="fas fa-exclamation-triangle me-2"></i>請先選擇檔案');
                return;
            }

            // 檔名驗證
            if (!file.name.includes('即時業績') || !file.name.includes('當日')) {
                if (!confirm('檔名似乎不符合格式（應包含「即時業績」和「當日」），確定要繼續嗎？')) {
                    return;
                }
            }

            const formData = new FormData();
            formData.append('file', file);

            showAlert('uploadAlert', 'info', '<i class="fas fa-spinner fa-spin me-2"></i>正在上傳並匯入檔案，請稍候...');

            try {
                const response = await fetch('/api/import_excel', {
                    method: 'POST',
                    body: formData
                });

                const result = await response.json();

                if (result.status === 'success') {
                    showAlert('uploadAlert', 'success',
                        `<i class="fas fa-check-circle me-2"></i>${result.message}<br>` +
                        `<small>資料表: ${result.table} | 共 ${result.rows} 筆資料</small>`
                    );
                    fileInput.value = '';
                    setTimeout(() => loadJobs(), 1000);
                } else {
                    showAlert('uploadAlert', 'danger', '<i class="fas fa-exclamation-circle me-2"></i>' + result.message);
                }
            } catch (error) {
                showAlert('uploadAlert', 'danger', '<i class="fas fa-exclamation-circle me-2"></i>上傳失敗: ' + error.message);
            }
        }

        // 初始化
        loadConfig();
        loadJobs();

        // 每 10 秒自動刷新任務列表
        setInterval(loadJobs, 10000);

        // 重置卡住的任務
        async function resetStuckJobs() {
            if (!confirm('確定要重置所有卡住超過 1 小時的任務嗎？')) {
                return;
            }

            try {
                const response = await fetch('/api/reset_stuck_jobs', { method: 'POST' });
                const result = await response.json();

                if (result.success) {
                    alert(result.message);
                    loadJobs();
                } else {
                    alert('重置失敗: ' + result.message);
                }
            } catch (error) {
                alert('重置失敗: ' + error.message);
            }
        }

        // 手動將任務標記為失敗
        async function failJob(jobId) {
            if (!confirm(`確定要取消任務 #${jobId} 嗎？`)) {
                return;
            }

            try {
                const response = await fetch(`/api/import_jobs/${jobId}/fail`, { method: 'POST' });
                const result = await response.json();

                if (result.success) {
                    alert(result.message);
                    loadJobs();
                } else {
                    alert('取消失敗: ' + result.message);
                }
            } catch (error) {
                alert('取消失敗: ' + error.message);
            }
        }

})();