// speechgen.ts
// Copyright (C) 2025 DTP Technologies, LLC
// All Rights Reserved

import assert from "node:assert";
import fs from "node:fs";

import { DtpProcess } from "./lib/dtplib.js";

import { SpeechVoice } from "./app/models/lib/speech-personality.js";
import OpenAiService, { IGeneratedFile } from "app/services/openai.js";

class SpeechGenerator extends DtpProcess {

  static get name ( ) { return "SpeechGenerator"; }
  static get slug ( ) { return "speechgen"; }

  constructor ( ) {
    super(SpeechGenerator);
  }

  async generate (model: string, voice: SpeechVoice, input: string) : Promise<IGeneratedFile> {
    try {
      console.log("requesting audio resource");
      const openAiService = this.getService<OpenAiService>("openAi");
      return openAiService.generateSpeech(input, model, voice);
    } catch (error) {
      throw new Error("failed to generate speech audio file", { cause: error });
    }
  }

  async reportStats ( ) : Promise<void> {
    this.log.info("this process does not report statistics");
  }
}

(async ( ) => {

  try {
    console.log("Speech Generator: A command line tool to generate audio");
    const generator = new SpeechGenerator();
    await generator.start();

    const model = process.argv[2];
    assert(model, "Must specify model (tts-1, tts-1-hd)");

    const voice = process.argv[3] as SpeechVoice;
    assert(voice, "Must specify voice");

    const inputFile = process.argv[4];
    assert(inputFile, "Must specify input filename");

    const inputText = await fs.promises.readFile(inputFile, "utf-8");
    console.log("generating audio");
    const response = await generator.generate(model, voice, inputText);
    generator.log.info("speech audio file generated", response);
  } catch (error) {
    console.error("audiogen has failed", error);
  }

})();

/*
 * NOTEPAD
 *
 * import env from "./config/env.js";
 * import MinioService from "app/services/minio.js";
 *
 * const minioService = this.getService<MinioService>("minio");
 * const bucket = env.minio.buckets.audios;
 * const key = `${response._id.toString()}.wav`;
 * const info = await minioService.uploadFile({ bucket, key, filePath: response.file });
 */