backend/services/ai/translate.js

import { TRANSLATION_PROMPT } from '../../../prompts/translation.js';

import { Type } from '@google/genai';
import { tryModels, getPrompt, cleanJson, DEFAULT_SAFETY_SETTINGS } from '@/backend/services/ai/utils';

export async function translate(text, targetLanguage, options, apiKey, isOwnApi = false) {
    const models = ['gemini-3-flash-preview', 'gemini-flash-lite-latest'];
    const isBurmese = targetLanguage.toLowerCase().includes('burm') || targetLanguage.includes('မြန်မာ');
    const finalPrompt = TRANSLATION_PROMPT(targetLanguage, options);

    return await tryModels(apiKey, models, async (ai, model) => {
        const response = await ai.models.generateContent({
            model: model,
            contents: [{ parts: [{ text: `CONTENT: ${text}` }] }],
            config: {
                temperature: 0.7,
                systemInstruction: finalPrompt,
                responseMimeType: "application/json",
                safetySettings: DEFAULT_SAFETY_SETTINGS,
                responseSchema: {
                    type: Type.OBJECT,
                    properties: {
                        translation: { type: Type.STRING },
                        deepMeaning: { type: Type.STRING, nullable: true },
                        suggestions: { type: Type.OBJECT, nullable: true, properties: { videoTitles: { type: Type.ARRAY, items: { type: Type.STRING } }, thumbnailTexts: { type: Type.ARRAY, items: { type: Type.STRING } } } }
                    },
                    required: ['translation']
                }
            }
        });
        return JSON.parse(cleanJson(response.text));
    });
}