from datetime import datetime

import socketio
from flask import Flask, render_template

sio = socketio.Server()
app = Flask(__name__)
app.wsgi_app = socketio.WSGIApp(sio, app.wsgi_app)

# We request users to send the run number to prevent accidentially getting old requests from a previous run
# This maybe will give to much errors from people forgetting to change their number
# Remove it?

# TODO
# Save and read from a file to persist over reboots
# Save progress through time during 1 run
# Save result of different runs

db = {"current_run": 0, "run_start_timer": None, "run_data": {}}


@app.route("/")
def index():
    return render_template('index.html')


@app.route("/start_run/<run_index>")
def start_run(run_index):
    db["current_run"] = run_index
    starttime = datetime.now()
    if run_index in db["run_data"]:
        return "This run is already ran, take another number."
    db["run_data"][run_index] = {"starttime": starttime, "data": {}}
    # TODO send start request to the first person in the chain. Probably a zeus part already written as example
    sio.emit('start_run', run_index)
    return f'Run {run_index} started at {starttime}'


@app.route("/link/start/<run>/<index>")
def link_start(run, index):
    if db["current_run"] != run:
        return "Wrong run number, you are probably behind.", 404
    else:
        run_data = db["run_data"][run]["data"]
        if index in run_data:
            return "you already started in this run. Ignoring this request."
        else:
            run_data[index] = {"start": datetime.now()}
            sio.emit('link_start', index)
            return "Success."


@app.route("/link/handoff/<run>/<index>")
def link_handoff(run, index):
    if db["current_run"] != run:
        return "Wrong run number, you are probably behind.", 404
    else:
        link_data = db["run_data"][run]["data"][index]
        if link_data["handoff"]:
            return "you already handed off control during this run. Ignoring this request"
        else:
            link_data["handoff"] = datetime.now()
            return "Success."


if __name__ == '__main__':
    app.run(host="0.0.0.0", debug=True)