class Vault {
  private secrets: Map<string, string> = new Map();
  constructor() {
    const data = JSON.parse(Deno.readTextFileSync('./secrets.json') || '{}');

    for (const key in data) {
      if (Object.prototype.hasOwnProperty.call(data, key)) {
        this.secrets.set(key, data[key]);
      }
    }
  }
  public get = (key: string) => this.secrets.get(key);
  public getf = (key: string, fields: Record<string, string>) => {
    let secret = this.secrets.get(key);
    if (!secret) return;
    
    for (const k in fields) {
      if (Object.prototype.hasOwnProperty.call(fields, k)) {
        const element = fields[k];
        secret = secret.replace(new RegExp(`{{${k}}}`, 'g'), element)
      }
    }

    return secret;
  }
}

export const vault = new Vault();