src/app/actions.ts

'use server';

import { z } from 'zod';

const API_BASE_URL = 'https://sameerbanchhor-chhattisgarhi-tts-api.hf.space';

const formSchema = z.object({
  text: z.string().min(1, 'Please enter some text to convert.').max(500, 'Text cannot exceed 500 characters.'),
});

export type TtsState = {
  success: boolean;
  audioUrl?: string;
  error?: string;
  key?: number; // Used to force re-rendering of the audio player
};

export async function convertTextToSpeech(prevState: TtsState, formData: FormData): Promise<TtsState> {
  const validatedFields = formSchema.safeParse({
    text: formData.get('text'),
  });

  if (!validatedFields.success) {
    return { success: false, error: validatedFields.error.flatten().fieldErrors.text?.[0] };
  }

  const { text } = validatedFields.data;

  try {
    const generateResponse = await fetch(`${API_BASE_URL}/generate-audio`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ text }),
    });

    if (!generateResponse.ok) {
        const errorData = await generateResponse.json().catch(() => ({ message: generateResponse.statusText }));
        throw new Error(`Failed to generate audio: ${errorData.message || 'Unknown error'}`);
    }

    const generateData = await generateResponse.json();

    if (generateData.status !== 'success' || !generateData.audio_url) {
        throw new Error(generateData.message || 'API did not return a valid audio URL.');
    }

    const audioUrl = `${API_BASE_URL}${generateData.audio_url}`;
    
    return { success: true, audioUrl: audioUrl, key: Date.now() };
  } catch (error) {
    console.error('TTS Conversion Error:', error);
    if (error instanceof Error) {
        return { success: false, error: error.message };
    }
    return { success: false, error: 'An unknown error occurred during conversion.' };
  }
}