import { Model } from "./Model";
import { Schema } from "./Schema";
import fs from "fs/promises";
import path from "path";
import { SECRET_PASS } from "../config";

export interface DatabaseOptions {
  path: string;
  enc_pass?: string;
}

export class Database {
  readonly path: string;
  private readonly _enc: string;

  private readonly _models: Model<any>[] = [];

  constructor(path: string);
  constructor(options: DatabaseOptions);
  constructor(options: DatabaseOptions | string) {
    this.path = typeof options === "string" ? options : options.path;
    if (typeof options === "object" && options.enc_pass) {
      Object.defineProperty(this, "_enc", {
        value: options.enc_pass,
        enumerable: false,
      });
    } else {
      Object.defineProperty(this, "_enc", {
        value: SECRET_PASS,
        enumerable: false,
      });
    }
  }

  async registerModels(...models: Model<any>[]): Promise<void> {
    for (let model of models) {
      Object.defineProperty(model, "_enc", {
        value: this._enc,
        enumerable: false,
      });
      Object.defineProperty(model, "dbPath", {
        value: this.path,
        enumerable: false,
      });

      try {
        const p = path.join(this.path, model.modelName + ".dann");
        await fs.readFile(p).catch(() => {
          fs.writeFile(p, "");
        });
      } catch {
        console.log(
          "Can't create model file, maybe parent folder doesn't exist"
        );
        continue;
      }
      this._models.push(model);
    }
  }
}