import {
  getRequiredEnv,
  getStdout,
  loggerWithPrefix,
  type PrefixLogger,
} from "./mod.ts";

export class BitwardenSession {
  private readonly sessionInitializer: Promise<string>;
  private readonly logger: PrefixLogger;

  constructor(
    server = getRequiredEnv("BW_SERVER"),
    logger = loggerWithPrefix(),
  ) {
    ["BW_CLIENTID", "BW_CLIENTSECRET"].forEach(getRequiredEnv);

    const instanceId = crypto.randomUUID().split("-").at(0);
    this.logger = logger.withAdditionalPrefix(() =>
      `[BitwardenSession.instance.${instanceId}]`
    );

    this.sessionInitializer = getStdout(
      `bw config server ${server} --quiet`,
    )
      .then(() => {
        this.logger.log("logging in via api (˘ω˘)");
        return getStdout(`bw login --apikey --quiet`);
      })
      .then(() => {
        this.logger.log("unlocking the secret vault~ (◕ᴗ◕✿)");
        return getStdout(`bw unlock --passwordenv BW_PASSWORD --raw`);
      })
      .then((session) => {
        const _session = session.trim();
        this.logger.log(`got my session key (>ᴗ<) ${_session}`);
        return _session;
      });
  }

  public async getItem<T extends LoginItem | SecureNote>(
    secretName: string,
  ): Promise<T> {
    this.logger.log(`looking for your secret ${secretName} (⑅˘꒳˘)`);
    return await this.sessionInitializer.then((session) =>
      getStdout(`bw list items`, {
        env: {
          BW_SESSION: session,
        },
      })
    ).then((items) => JSON.parse(items)).then((items) =>
      items.find(({ name }: { name: string }) => name === secretName)
    ).then((item) => {
      if (!item) {
        throw new Error(
          "couldn't find the bitwarden item " + secretName + " (｡•́︿•̀｡)",
        );
      }
      this.logger.log(`yay! found secret: ${secretName} (*ˊᗜˋ*)`);
      return item;
    });
  }

  async close(): Promise<void> {
    return await this.sessionInitializer.then((session) =>
      getStdout(`bw lock`, { env: { BW_SESSION: session } })
    ).then(() => {
      this.logger.log("all locked up and secure now~ (｡•̀ᴗ-)✧");
    });
  }
}

export type LoginItem = {
  login: {
    username: string;
    password: string;
  };
};

export type SecureNote = {
  notes: string;
};