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from fastapi import FastAPI, HTTPException | |
from transformers import pipeline | |
import langdetect | |
import logging | |
import os | |
import opencc # Untuk konversi Mandarin Tradisional ke Sederhana | |
os.environ["HF_HOME"] = "/app/cache" | |
os.environ["TRANSFORMERS_CACHE"] = "/app/cache" | |
app = FastAPI() | |
logging.basicConfig(level=logging.INFO) | |
logger = logging.getLogger(__name__) | |
MODEL_MAP = { | |
"id": "Helsinki-NLP/opus-mt-id-en", # Indonesia ke Inggris | |
"th": "Helsinki-NLP/opus-mt-th-en", # Thailand ke Inggris | |
"fr": "Helsinki-NLP/opus-mt-fr-en", # Prancis ke Inggris | |
"es": "Helsinki-NLP/opus-mt-es-en", # Spanyol ke Inggris | |
"ja": "Helsinki-NLP/opus-mt-ja-en", # Jepang ke Inggris | |
"zh-CN": "Helsinki-NLP/opus-mt-zh-en", # Mandarin Sederhana ke Inggris | |
"zh-TW": "Helsinki-NLP/opus-mt-zh-en", # Mandarin Tradisional ke Inggris | |
"vi": "Helsinki-NLP/opus-mt-vi-en", # Vietnam ke Inggris | |
} | |
translators = {} | |
try: | |
for lang, model_name in MODEL_MAP.items(): | |
logger.info(f"Loading model for {lang}...") | |
translators[lang] = pipeline("translation", model=model_name) | |
logger.info(f"Model for {lang} loaded successfully") | |
except Exception as e: | |
logger.error(f"Model initialization failed: {str(e)}") | |
raise Exception(f"Model initialization failed: {str(e)}") | |
# Inisialisasi konverter OpenCC untuk Tradisional ke Sederhana | |
converter = opencc.OpenCC('t2s') # t2s = Traditional to Simplified | |
def is_traditional_chinese(text: str) -> bool: | |
"""Cek apakah teks menggunakan karakter Mandarin Tradisional.""" | |
# Contoh sederhana: deteksi beberapa karakter Tradisional | |
traditional_chars = set('繁體字') # Bisa diperluas dengan daftar karakter yang lebih lengkap | |
return any(char in traditional_chars for char in text) | |
def detect_language(text: str) -> str: | |
"""Deteksi bahasa dari teks menggunakan langdetect.""" | |
try: | |
lang = langdetect.detect(text) | |
# Jika terdeteksi sebagai Mandarin (zh), cek apakah Tradisional atau Sederhana | |
if lang == "zh": | |
return "zh-TW" if is_traditional_chinese(text) else "zh-CN" | |
return lang if lang in MODEL_MAP else "en" # Default ke Inggris jika tidak didukung | |
except Exception as e: | |
logger.warning(f"Language detection failed: {str(e)}, defaulting to English") | |
return "en" | |
async def translate(text: str): | |
if not text: | |
raise HTTPException(status_code=400, detail="Text input is required") | |
try: | |
# Deteksi bahasa | |
source_lang = detect_language(text) | |
logger.info(f"Detected source language: {source_lang}") | |
# Jika sudah Inggris, kembalikan teks asli | |
if source_lang == "en": | |
return {"translated_text": text} | |
# Jika Mandarin Tradisional, konversi ke Sederhana | |
input_text = text | |
if source_lang == "zh-TW": | |
input_text = converter.convert(text) | |
logger.info("Converted Traditional Chinese to Simplified Chinese") | |
# Terjemahkan ke Inggris | |
translator = translators.get(source_lang) | |
if not translator: | |
raise HTTPException(status_code=400, detail=f"Translation not supported for language: {source_lang}") | |
result = translator(input_text) | |
return {"translated_text": result[0]["translation_text"]} | |
except Exception as e: | |
logger.error(f"Processing failed: {str(e)}") | |
raise HTTPException(status_code=500, detail=f"Processing failed: {str(e)}") |