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const express = require('express');
const bodyParser = require('body-parser');
const { fetchEventSource } = require('./modules/FetchEventSource');

const app = express();
const router = express.Router();

router.post('/request', (request, response) => {
    const url = 'https://ailab.synap.co.kr/sdk/ocr';
    const apiKey = 'OCR_API_KEY';
    const bodyDataoptions = Object.assign({}, request.body, {
        url: 'https://ailab.synap.co.kr/sdk/ocr',
		formData: {
			api_key: OCR_API_KEY,
			image: fs.createReadStream(imgPath),
			page_index: page,
			...OCROption
		}
    });
	
	request.post(options).on('response', response => {
        const statusCode = _.get(response, 'statusCode');
        const statusMessage = _.get(response, 'statusMessage');
        if (statusCode === 200) {
            console.log('OCR 성공');
            let body = [];
            response.on('error', (err) => {
                throw err;
            }).on('data', (chunk) => {
                body.push(chunk);
            }).on('end', () => {
                // 전송 완료
                const data = JSON.parse(Buffer.concat(body).toString());
                // 클라이언트에게 응답
                return res.status(statusCode).json(data);
            });
        } else {
            console.log('OCR 실패', statusCode);
            const error = new Error(statusMessage);
            error.status = statusCode;
            // 클라이언트에게 오류 응답
            return res.status(statusCode).json({ error: statusMessage });
        }
    });
});

app.use(bodyParser.json());
app.use('/', router);
app.listen(8080);