import Database from 'better-sqlite3';
import { statSync } from 'node:fs';

const path = process.argv[2] ?? process.env.DB_PATH ?? './data/cherry.db';
const db = new Database(path, { readonly: true, fileMustExist: true });
try {
    console.table(
        ['', '-wal', '-shm'].map((suffix) => {
            try {
                return { file: path + suffix, bytes: statSync(path + suffix).size };
            } catch (error) {
                if (error.code !== 'ENOENT') throw error;
                return { file: path + suffix, bytes: 0 };
            }
        })
    );
    console.table(
        db
            .prepare(
                `SELECT name, ROUND(SUM(pgsize)/1048576.0, 2) AS mib
        FROM dbstat GROUP BY name ORDER BY SUM(pgsize) DESC LIMIT 20`
            )
            .all()
    );
    console.table(
        ['page_size', 'page_count', 'freelist_count', 'auto_vacuum'].map((pragma) => ({
            pragma,
            value: db.pragma(pragma, { simple: true })
        }))
    );
} finally {
    db.close();
}