app.py

from fastapi import FastAPI, Request
from fastapi.responses import FileResponse
import torch
import numpy as np
import scipy.io.wavfile
from transformers import VitsModel, AutoTokenizer
import re

app = FastAPI()

# Load model and tokenizer
model = VitsModel.from_pretrained("Somali-tts/somali_tts_model")
tokenizer = AutoTokenizer.from_pretrained("saleolow/somali-mms-tts")
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
model.to(device)
model.eval()

number_words = {
    0: "eber", 1: "koow", 2: "labo", 3: "seddex", 4: "afar", 5: "shan",
    6: "lix", 7: "todobo", 8: "sideed", 9: "sagaal", 10: "toban",
    11: "toban iyo koow", 12: "toban iyo labo", 13: "toban iyo seddex",
    14: "toban iyo afar", 15: "toban iyo shan", 16: "toban iyo lix",
    17: "toban iyo todobo", 18: "toban iyo sideed", 19: "toban iyo sagaal",
    20: "labaatan", 30: "sodon", 40: "afartan", 50: "konton",
    60: "lixdan", 70: "todobaatan", 80: "sideetan", 90: "sagaashan",
    100: "boqol", 1000: "kun"
}

def number_to_words(number):
    number = int(number)
    if number < 20:
        return number_words[number]
    elif number < 100:
        tens, unit = divmod(number, 10)
        return number_words[tens * 10] + (" iyo " + number_words[unit] if unit else "")
    elif number < 1000:
        hundreds, remainder = divmod(number, 100)
        part = (number_words[hundreds] + " boqol") if hundreds > 1 else "boqol"
        if remainder:
            part += " iyo " + number_to_words(remainder)
        return part
    elif number < 1000000:
        thousands, remainder = divmod(number, 1000)
        words = [number_to_words(thousands) + " kun" if thousands != 1 else "kun"]
        if remainder:
            words.append("iyo " + number_to_words(remainder))
        return " ".join(words)
    else:
        return str(number)

def normalize_text(text):
    numbers = re.findall(r'\d+', text)
    for num in numbers:
        text = text.replace(num, number_to_words(num))
    text = text.replace("KH", "qa").replace("Z", "S")
    text = text.replace("SH", "SHa'a").replace("DH", "Dha'a")
    text = text.replace("ZamZam", "SamSam")
    return text

@app.post("/tts")
async def tts(request: Request):
    data = await request.json()
    text = normalize_text(data["text"])
    inputs = tokenizer(text, return_tensors="pt").to(device)
    with torch.no_grad():
        waveform = model(**inputs).waveform.squeeze().cpu().numpy()
    filename = "output.wav"
    scipy.io.wavfile.write(filename, rate=model.config.sampling_rate, data=(waveform * 32767).astype(np.int16))
    return FileResponse(filename, media_type="audio/wav")