import { NodeAdapterError } from "./node_adapter_error.mjs";
import { QueryWrapper } from "./query_wrapper.mjs";
import { ResponseWrapper } from "./response_wrapper.mjs";
import { enableDebug, log } from "./log.mjs";


export class DatabaseWrapper {
  constructor(db) {
    this.db = db;
  }

  close() {
    return new Promise((resolve, reject) => {
      this.db.close((err) => {
        if (err) {
          reject(NodeAdapterError.from(err));
          return;
        }
        resolve();
      });
    });
  }

  sql(sql, ...args) {
    const query = new QueryWrapper(sql);

    if (query.isAnyOf("INSERT", "UPDATE", "DELETE")) {
      return this.executeRun(query, ...args);
    } else {
      return this.executeAll(query, ...args);
    }
  }

  executeRun(query, ...args) {
    return new Promise((resolve, reject) => {
      log(query.sql);
      this.db.run(query.sql, ...args, function (err) {
        if (err) {
          reject(NodeAdapterError.from(err));
          return;
        }

        const result = {};

        if (query.isAnyOf("INSERT")) {
          result.insertId = this.lastID;
        }

        if (query.isAnyOf("UPDATE", "DELETE")) {
          result.rowsAffected = this.changes;
        }

        resolve(ResponseWrapper.success(result));
      });
    });
  }

  executeAll(query, ...args) {
    return new Promise((resolve, reject) => {
      log(query.sql);
      this.db.all(query.sql, ...args, function (err, rows) {
        if (err) {
          reject(NodeAdapterError.from(err));
          return;
        }
        resolve(ResponseWrapper.success({rows}));
      });
    });
  }
}