from flask import Flask, g, jsonify, request, json, Response, send_from_directory, abort
from flask_cors import CORS
import orjson, os

import datetime
import time

app = Flask(__name__)
CORS(app)

FILES_DIRECTORY = '../data/'
today = datetime.datetime.today()

@app.before_request
def start_timer():
    g.start = time.time()

@app.after_request
def log(response):
    now = time.time()
    duration = round(now - g.start, 4)
    dt = datetime.datetime.fromtimestamp(now).strftime('%Y-%m-%d %H:%M:%S')

    log_entry = {
        'timestamp': dt,
        'duration': duration,
        'method': request.method,
        'url': request.url,
        'status': response.status_code,
        'remote_addr': request.access_route[-1],
        'user_agent': request.user_agent.string,
    }

    log_line = ','.join(f'{key}={value}' for key, value in log_entry.items())

    with open('api_logs.txt', 'a') as f:
        f.write(log_line + '\n')

    return response

@app.route('/bitcoin_business_growth_by_country', methods=['GET'])
def business_growth():
    # Parse args from request
    latest_date = request.args.get('latest_date')
    country_names = request.args.get('countries') # change this line
    cumulative_period_type = request.args.get('cumulative_period_type')

    # Open json locally
    with open('../data/final__bitcoin_business_growth_by_country.json', 'rb') as f:
        data = orjson.loads(f.read())

    # Filter based on args
    if latest_date:
        latest_date_bool = latest_date == 'true'
        filtered_data = [item for item in data if item['latest_date'] == latest_date_bool]
    else:
        filtered_data = data
    
    if country_names:
        countries = [name.strip() for name in country_names.split(",")]
        filtered_data = [item for item in filtered_data if item['country_name'] in countries]
    
    if cumulative_period_type == "1 day":
        delta = today - datetime.timedelta(days=2)
        filtered_data = [item for item in filtered_data if item['cumulative_period_type'] == cumulative_period_type and delta <= datetime.datetime.strptime(item['date'], '%Y-%m-%d')]
    elif cumulative_period_type == "7 day":
        delta = today - datetime.timedelta(days=8)
        filtered_data = [item for item in filtered_data if item['cumulative_period_type'] == cumulative_period_type and delta <= datetime.datetime.strptime(item['date'], '%Y-%m-%d')]
    elif cumulative_period_type == "28 day":
        delta = today - datetime.timedelta(days=29)
        filtered_data = [item for item in filtered_data if item['cumulative_period_type'] == cumulative_period_type and delta <= datetime.datetime.strptime(item['date'], '%Y-%m-%d')]
    elif cumulative_period_type == "365 day":
        delta = today - datetime.timedelta(days=366)
        filtered_data = [item for item in filtered_data if item['cumulative_period_type'] == cumulative_period_type and delta <= datetime.datetime.strptime(item['date'], '%Y-%m-%d')]
    
    # Sort by date
    sorted_data = sorted(filtered_data, key=lambda x: x['date'], reverse=False)
    
    # Return json
    return Response(json.dumps(sorted_data), mimetype='application/json')

@app.route('/get_json/<filename>', methods=['GET'])
def get_json(filename):

    period = request.args.get('period')

    file_path = os.path.join(FILES_DIRECTORY, filename)
    if not os.path.isfile(file_path):
        abort(404)

    with open(file_path, 'r') as f:
        data = orjson.loads(f.read())

    if period == "last 7 days":
        delta = today - datetime.timedelta(days=7)
        filtered_data = [item for item in data if delta <= datetime.datetime.strptime(item['date'], '%Y-%m-%d') <= today]
        sorted_data = sorted(filtered_data, key=lambda x: x['date'])
    elif period == "last 28 days":
        delta = today - datetime.timedelta(days=28)
        filtered_data = [item for item in data if delta <= datetime.datetime.strptime(item['date'], '%Y-%m-%d') <= today]
        sorted_data = sorted(filtered_data, key=lambda x: x['date'])
    elif period == "last 365 days":
        delta = today - datetime.timedelta(days=365)
        filtered_data = [item for item in data if delta <= datetime.datetime.strptime(item['date'], '%Y-%m-%d') <= today]
        sorted_data = sorted(filtered_data, key=lambda x: x['date'])
    elif period == "last 2 years":
        delta = today - datetime.timedelta(days=730)
        filtered_data = [item for item in data if delta <= datetime.datetime.strptime(item['date'], '%Y-%m-%d') <= today]
        sorted_data = sorted(filtered_data, key=lambda x: x['date'])
    else:
        sorted_data = sorted(data, key=lambda x: x['date'])

    return jsonify(sorted_data)

@app.route('/download/<filename>', methods=['GET'])
def download_file(filename):
    try:
        return send_from_directory(FILES_DIRECTORY, filename, as_attachment=True)
    except FileNotFoundError:
        abort(404)

if __name__ == '__main__':
    app.run()