import fs from 'fs';
import path from 'path';
import dotenv from 'dotenv';
import { logger } from './logger';

dotenv.config();

const LLM_BASE_URL = process.env.LLM_BASE_URL;

async function describeImage(imagePath: string, prompt: string): Promise<any> {
    if (!LLM_BASE_URL) {
        throw new Error('LLM_BASE_URL is not defined in the .env file');
    }

    const imageBuffer = fs.readFileSync(imagePath);
    const base64Image = imageBuffer.toString('base64');

    for (let i = 0; i < 10; i++) {
        let llmResponse = "";

        try {
            const requestUrl = new URL('v1/chat/completions', LLM_BASE_URL);
            const response = await fetch(requestUrl, {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                },
                body: JSON.stringify({
                    model: 'local-model',
                    messages: [
                        {
                            role: 'user',
                            content: [
                                { type: 'image_url', image_url: { url: `data:image/jpeg;base64,${base64Image}` } },
                                { type: 'text', text: prompt },
                            ],
                        },
                    ],
                    temperature: 0.7,
                }),
            });

            const data = await response.json();
            if (data.choices && data.choices.length > 0) {
                const content = data.choices[0].message.content;
                llmResponse = content;
                const jsonMatch = content.match(/\{[\s\S]*\}/);
                if (jsonMatch) {
                    return JSON.parse(jsonMatch[0]);
                }
            } else {
                logger.error('Unexpected API response:', data);
            }
        } catch (error) {
            logger.error(`Attempt ${i + 1} failed:`, error);
            if (error instanceof TypeError && error.message.includes('fetch failed')) {
                logger.error('Could not connect to the LM Studio server. Please ensure the server is running and accessible at the specified LLM_BASE_URL.');
            }
            logger.debug(`LLM response: ${llmResponse}`)
        }
    }

    throw new Error('Failed to describe image after 10 attempts');
}

export { describeImage };