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Diffstat (limited to 'backend/app.py')
| -rw-r--r-- | backend/app.py | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/backend/app.py b/backend/app.py deleted file mode 100644 index 5e3fa7c..0000000 --- a/backend/app.py +++ /dev/null @@ -1,154 +0,0 @@ -""" -Flask app for serving the static files -""" -from flask import Flask, send_file, jsonify -from flask_cors import CORS -from sql.pg_handler import PostgresHandler -import fileutil as fs -import datetime -import pandas -from sklearn.linear_model import Ridge -import numpy as np -import os -from dotenv import load_dotenv - -load_dotenv() - -app = Flask(__name__) -CORS(app) - -# Optional setting to use any of the custom options below -START_DATE = "2023-04-01" # 2023 April 1st - -# Do not include datapoints before the START_DATE for any /api/subscribers/ endpoint -# For when you only want to serve actual data you collected at those specific endpoints -ALL_EXCLUDE_MANUAL_DATA = False - -# Do not include datapoints before the START_DATE for any /api/subscribers/<channel_id> endpoint -# For when you only want to serve actual data you collected at those specific endpoints -INDIVIDUAL_EXCLUDE_MANUAL_DATA = True - -def create_database_connection(): - """ - Creates a database connection using the environment variables - :param: auth_append: str = "" - If you want to use a different set of variables for persisitance of sessions - """ - hostname = os.environ.get("POSTGRES_HOST") - user = os.environ.get("POSTGRES_USER") - password = os.environ.get("POSTGRES_PASSWORD") - database = os.environ.get("POSTGRES_DATABASE") - return PostgresHandler(host_name=hostname, username=user, password=password, database=database, port=5432) - -@app.route("/") -def index(): - try: - return send_file("index.html") - except Exception as e: - return jsonify({"error": str(e)}) - -@app.route("/api/subscribers") -def api_subscribers(): - server = create_database_connection() - query = 'SELECT sd.*, h.* FROM subscriber_data sd INNER JOIN "24h_historical" h ON sd.channel_id = h.channel_id ORDER BY sd.subscriber_count DESC' - data = server.execute_query(query) - channel_data_list = [{"channel_name": row[3], "profile_pic": row[2], "subscribers": row[4], "sub_org": row[5], "video_count": row[6], "day_diff": int(row[4] - int(row[10]))} for row in data] - subscriber_data = {"timestamp": datetime.datetime.now(), "channel_data": channel_data_list} - return jsonify(subscriber_data) - -@app.route("/api/subscribers/<channel_name>") -def api_subscribers_channel(channel_name): - server = create_database_connection() - query = "SELECT * FROM subscriber_data_historical WHERE name = %s AND timestamp > %s ORDER BY TO_CHAR(timestamp, 'YYYY-MM-DD')" - data = server.execute_query(query, (channel_name, START_DATE)) - labels = [] - data_points = [] - seen_dates = set() - for row in data: - date_string = row[5].strftime("%Y-%m-%d") - if date_string in seen_dates: - continue - labels.append(date_string) - data_points.append(row[4]) - seen_dates.add(date_string) - return jsonify({"labels": labels, "datasets": data_points}) - -@app.route("/api/subscribers/<channel_name>/7d") -def api_subscribers_channel_7d(channel_name): - server = create_database_connection() - query = "SELECT * FROM subscriber_data_historical WHERE name = %s ORDER BY TO_CHAR(timestamp, 'YYYY-MM-DD')" - data = server.execute_query(query, (channel_name,)) - labels = [] - data_points = [] - seen_dates = set() - for row in data: - date_string = row[5].strftime("%Y-%m-%d") - if date_string in seen_dates: - continue - labels.append(date_string) - data_points.append(row[4]) - seen_dates.add(date_string) - return jsonify({"labels": labels[-7:], "datasets": data_points[-7:]}) - -@app.route("/api/channel/<channel_name>") -def get_channel_information(channel_name): - def find_next_milestone(subscriber_count): - if subscriber_count < 100000: - return ((subscriber_count // 10000) + 1) * 10000 - elif subscriber_count < 1000000: - return ((subscriber_count // 100000) + 1) * 100000 - else: - return ((subscriber_count // 1000000) + 1) * 1000000 - server = create_database_connection() - query = "SELECT * FROM subscriber_data WHERE name = %s" - data = server.execute_query(query, (channel_name,)) - channel_data = {"channel_id": data[0][1], "channel_name": data[0][3], "profile_pic": data[0][2], "subscribers": data[0][4], "sub_org": data[0][5], "video_count": data[0][6]} - historical_data = server.execute_query("SELECT * FROM subscriber_data_historical WHERE name = %s", (channel_name,)) - current_subscriber_count = data[0][4] - subscriber_points = [] - date_strings = [] - seen_dates = set() - for row in historical_data: - date_string = row[5].strftime("%Y-%m-%d") - if date_string in seen_dates: - continue - subscriber_points.append(row[4]) - date_strings.append(date_string) - seen_dates.add(date_string) - data = {"subscribers": subscriber_points, "dates": date_strings} - df = pandas.DataFrame(data=data) - df['dates'] = pandas.to_datetime(df['dates']) - df.set_index('dates', inplace=True) - df.sort_index(inplace=True) - three_months_ago = datetime.datetime.now() - datetime.timedelta(days=90) - df = df[df.index > three_months_ago] - try: - model = Ridge(alpha=100) - X = np.array(range(len(df))).reshape(-1, 1) - y = df['subscribers'] - model.fit(X, y) - next_milestone = find_next_milestone(current_subscriber_count) - days_until_next_milestone = (next_milestone - model.intercept_) / model.coef_ - days_until_next_milestone_scalar = int(days_until_next_milestone[0]) - next_milestone_date = (df.index[0] + pandas.Timedelta(days=days_until_next_milestone_scalar)).date() - time_until_next_milestone = (next_milestone_date - datetime.datetime.now().date()).days - if time_until_next_milestone < 0: - raise OverflowError - channel_data["next_milestone_date"] = str(next_milestone_date) - channel_data["days_until_next_milestone"] = str(time_until_next_milestone) - channel_data["next_milestone"] = str(next_milestone) - except OverflowError: - channel_data["next_milestone_date"] = "N/A" - channel_data["days_until_next_milestone"] = "N/A" - channel_data["next_milestone"] = "N/A" - return jsonify(channel_data) -@app.route("/api/announcement") -def api_announcement(): - announcement_data = {"message": "None", "show_message": False} - return jsonify(announcement_data) - -@app.errorhandler(404) -def not_found(error): - return jsonify(error=str(error)), 404 - -if __name__ == "__main__": - app.run(debug=True) |