import mysql from 'mysql2/promise';
import dotenv from 'dotenv';
import xlsx from 'xlsx';

dotenv.config();

async function restoreData() {
    const connection = await mysql.createConnection({
        host: process.env.DB_HOST,
        user: process.env.DB_USER,
        password: process.env.DB_PASS,
        database: process.env.DB_NAME,
        port: parseInt(process.env.DB_PORT || '3306')
    });

    try {
        console.log('🔄 Restoring ServerPC metadata (Final Attempt)...');

        // 1. Excel 로드
        const workbook = xlsx.readFile('server_db.xlsx');
        const sheetName = workbook.SheetNames[0];
        const excelRows = xlsx.utils.sheet_to_json(workbook.Sheets[sheetName]);

        // 2. DB에서 현재 서버PC 데이터 로드
        const [dbAssets] = await connection.query(
            "SELECT id, memo, asset_code FROM asset_pc WHERE asset_type = '서버PC'"
        );

        console.log(`📊 DB: ${dbAssets.length} assets, Excel: ${excelRows.length} rows.`);

        for (const asset of dbAssets) {
            // 메모에서 "서버코드 : [ID]" 패턴 추출
            // 인코딩 문제로 깨져 보일 수 있으므로 유연하게 매칭 ( jh-idc-001 패턴 찾기 )
            const memo = asset.memo || '';
            const match = memo.match(/[a-z]+-idc-[0-9]+/i);
            const serverCode = match ? match[0] : null;

            if (!serverCode) {
                console.log(`  ❓ Could not find server code in memo for asset ${asset.asset_code}`);
                continue;
            }

            // Excel에서 해당 서버코드 찾기 (memo 필드 안에 포함되어 있음)
            const matchedExcelRow = excelRows.find(r => 
                r.memo && r.memo.includes(serverCode)
            );

            if (matchedExcelRow) {
                const updateData = {
                    location: matchedExcelRow.location,
                    location_detail: matchedExcelRow.location_detail,
                    ip_address: matchedExcelRow.ip_address,
                    ip_address_2: matchedExcelRow.ip_address_2,
                    remote_tool: matchedExcelRow.remote_tool,
                    remote_id: matchedExcelRow.remote_id,
                    remote_pw: matchedExcelRow.remote_pw,
                    monitoring: matchedExcelRow.monitoring,
                    asset_purpose: matchedExcelRow.asset_purpose
                };

                const setClause = Object.keys(updateData).map(key => `\`${key}\` = ?`).join(', ');
                const values = [...Object.values(updateData), asset.id];

                await connection.query(
                    `UPDATE asset_pc SET ${setClause} WHERE id = ?`,
                    values
                );
                console.log(`  ✅ Restored: ${asset.asset_code} (Code: ${serverCode})`);
            } else {
                console.log(`  ⚠️ No Excel match for server code: ${serverCode}`);
            }
        }

        console.log('🎉 Restoration completed!');

    } catch (err) {
        console.error('❌ Restoration failed:', err);
    } finally {
        await connection.end();
    }
}

restoreData();