import json
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import random
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from flask import abort, Flask, jsonify
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from flask_cors import CORS
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from markupsafe import escape
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app = Flask(__name__)
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CORS(app)
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NUM_OF_NEWS = 3
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def sortByTimestamp(element):
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return element['timestamp']
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@app.errorhandler(404)
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def topicNotFound(error):
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return "Unable to find the specific topic", 404
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@app.route('/news/<string:topic>')
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def getNewsForTopic(topic):
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try:
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# Loading the file which has the topic news
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with open('./data/%s.json' % escape(topic)) as topicFile:
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news = json.load(topicFile)
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# Picking only a few elements from the list of news
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randomSelection = random.sample(news['data'], NUM_OF_NEWS)
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# Sorting the resulting list by the timestamp
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randomSelection.sort(key=sortByTimestamp)
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return jsonify(randomSelection)
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# If we can not find a file for the topic, we throw a 404 error
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except IOError:
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abort(404)
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