@keepzen/orm-for-sqlite3/index.js

ORM for Learn

const fs = require('fs');
const sqlite3 = require('sqlite3');
async function createDB(dbPath, sqlScript) {
  const db = await new Promise((resolve, reject) => {
    const db = new sqlite3.Database(dbPath, (err) => {
      if (err) {
        reject(err);
      } else {
        resolve(db);
      }
    });
  });
  if (sqlScript != null) {
    await sqlitePromsieRunScripte(db, sqlScript);
  }
  return db;
}
async function sqlitePromsieRunScripte(db, scriptPath) {
  const sqls = fs.readFileSync(scriptPath).
    toString().
    split(";").
    map(t => t.trim()).
    filter(t => t);
  try {
    for (let sql of ["BEGIN", ...sqls, "COMMIT"]) {
      await sqlitePromise(db, 'run', sql);
    }
  } catch (err) {
    await sqlitePromise(db, 'run', "ROLLBACK");
    throw err;
  }
}
function sqlitePromise(db, methold, ...params) {
  const [sql] = params;
  return new Promise((resolve, reject) => {
    db[methold](...params, function (err, result) {
      if (err) {
        const message = `[${sql}]\n${JSON.stringify(params, null, 2)}\n${err.message}`;
        //console.trace(message);
        reject({ message, type: "SQLError", stack: err.stack });
      } else {
        resolve(result || this);
      }
    })
  })
}
async function createPromiseDB(dbPath, sqlScript = null) {
  const db = await createDB(dbPath, sqlScript);
  return {
    query: sqlitePromise.bind(null, db, 'all'),
    execute: sqlitePromise.bind(null, db, "run"),
    begin: sqlitePromise.bind(null, db, 'run', "BEGIN"),
    commit: sqlitePromise.bind(null, db, 'run', "COMMIT"),
    rollback: sqlitePromise.bind(null, db, 'run', 'ROLLBACK'),
    runScript: sqlitePromsieRunScripte.bind(null, db),
    close: sqlitePromise.bind(null, db, 'close'),
  };
}
module.exports = {
  createPromiseDB,
}