import logging

from flask import Flask, Response, render_template, request

from server import metrics

from datetime import datetime
from datetime import timedelta

import json

app = Flask(__name__)

# UI endpoint for dashboard
@app.route("/")
def index():
    return render_template('index.html')

# Api endpoint for fetching list of stores
@app.route("/api/stores")
def stores():
    logging.info("hey")
    stores = open("stores.json", "r")
    resp = Response(
        response=stores.read(),
        status=200,
        mimetype="application/json"
    )
    resp.headers['Access-Control-Allow-Origin'] = '*'
    return resp

# Api endpoint for fetching metrics by store
@app.route("/api/metrics", methods=['GET'])
def metrics_srv():
    logging.info("request: {}".format(request))
    try:
        dms_ids = request.args.get("dms_ids").split(",")

        start_back = int(request.args.get("start_back"))
        start = datetime.now() - timedelta(seconds=start_back)

        end_back = int(request.args.get("end_back", "0"))
        end = datetime.now() - timedelta(seconds=end_back)
        
        aggr = request.args.get("aggr", "cnt,max,min").split(",")
        
        resp = Response(
            response=json.dumps(metrics.get_metrics(
                dms_ids=dms_ids,
                start=start,
                end=end,
                aggr=aggr
            ), indent=4),
            status=200,
            mimetype="application/json"
        )
        resp.headers['Access-Control-Allow-Origin'] = '*'
        return resp
    except Exception as ex:
        logging.error(ex)
        return Response(
            response="hello",
            status=200,
            mimetype="application/json")


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