app.py

from flask import Flask, request, jsonify  
from elasticsearch import Elasticsearch
from flask_cors import CORS
import os
import json

app = Flask(__name__)
CORS(app)

# es = Elasticsearch(
#     cloud_id = os.environ.get('ELASTIC_CLOUD_ID'),
#     http_auth = (os.environ.get('ELASTIC_USERNAME'), os.environ.get("ELASTIC_PASSWORD"))
# )
es = Elasticsearch([{'host': 'localhost', 'port': 9200, 'timeout': 200}])

# Index Route
@app.route("/")
def home():
    title = request.args.get('title')
    print(title)
    search_param = {
        'size': '100',
        'query': {
            'match': {
                'title': title
            }
        }
    }
    data = es.search(index="papers", body=search_param)
    # print(data)
    return jsonify({ 'data': data })

# Search Route
@app.route("/search", methods = ['POST'])
def search():
    if request.method == 'POST':
        query = request.form['search']
        value = request.form['value']
        search_param = {
            'query': {
                'match': {
                    query: value
                }
            }
        }
        data = es.search(index="papers", body=search_param)
        print(data)
        return jsonify({'data': data})

@app.route("/title", methods = ['POST'])
def title_search():
    if request.method == 'POST':
        query = request.form['search']
        search_param = {
            'query': {
                'match': {
                    'title': query
                }
            }
        }
        data = es.search(index="papers", body=search_param)
        print(data)
        return jsonify({'data': data})

if __name__ == "__main__":
    app.run(debug=False)