icydraw/src/server/object/history.ts

import { join } from 'path';
import sqlite3 from 'sqlite3';
import { open, Database } from 'sqlite';
import { CanvasRecord } from '../../common/types/canvas';

export class History {
  private db!: Database;
  constructor(
    private _store = join(__dirname, '..', '..', '..', 'canvas.db'),
  ) {}

  async initialize(): Promise<void> {
    this.db = await open({
      filename: this._store,
      driver: sqlite3.cached.Database,
    });

    await this.db.migrate();
  }

  async insert(record: CanvasRecord): Promise<void> {
    const color = record.color || 0;
    await this.db.run(
      `INSERT INTO Placement (user, x, y, ts, color) VALUES (?,?,?,?,?)`,
      record.user,
      record.x,
      record.y,
      record.ts,
      color,
    );
  }

  async getUserPlacements(user: string): Promise<CanvasRecord[]> {
    return this.db.all<CanvasRecord[]>(
      `SELECT * FROM Placement WHERE user = ?`,
      user,
    );
  }

  async getPlacerAt(x: number, y: number): Promise<CanvasRecord | undefined> {
    return this.db.get<CanvasRecord>(
      `SELECT * FROM Placement WHERE x = ? AND y = ? ORDER BY ts DESC`,
      x,
      y,
    );
  }
}