import atexit
import datetime

import pandas as pd
import uvicorn
from apscheduler.schedulers.background import BackgroundScheduler
from fastapi import FastAPI

import utils
from classes import Metagraph, Productivity, Throughput

# Global variables (saves time on loading data)
state_vars = None
reload_timestamp = datetime.datetime.now().strftime('%D %T')

data_all = None
data_30d = None
data_24h = None

app = FastAPI()

def load_data():
    """
    Reload the state variables
    """
    global data_all, data_30d ,data_24h, reload_timestamp
    
    utils.fetch_new_runs()
    
    data_all = utils.preload_data()
    
    data_30d = data_all[(pd.Timestamp.now() -  data_all['updated_at'].apply(lambda x: pd.Timestamp(x)) < pd.Timedelta('30 days'))]
    
    data_24h = data_all[(pd.Timestamp.now() -  data_all['updated_at'].apply(lambda x: pd.Timestamp(x)) < pd.Timedelta('1 days'))]
    reload_timestamp = datetime.datetime.now().strftime('%D %T')

    print(f'Reloaded data at {reload_timestamp}')


def start_scheduler():
    scheduler = BackgroundScheduler()
    scheduler.add_job(func=load_data, trigger="interval", seconds=60*30)
    scheduler.start()

    # Shut down the scheduler when exiting the app
    atexit.register(lambda: scheduler.shutdown())


@app.get("/")
def home():
    return "Welcome to the Bittensor Protein Folding Leaderboard API!"


@app.get("/updated")
def updated():
    return reload_timestamp


@app.get("/productivity", response_model=Productivity)
def productivity_metrics():
    """
    Get the productivity metrics
    """

    result = utils.get_productivity(df_all=data_all, df_24h=data_24h, df_30d=data_30d)


    return result
@app.get("/metagraph", response_model=Metagraph)
def get_metagraph():
    """
    Get the metagraph
    """
    
    df_m = utils.get_metagraph()
    df_miners = df_m.sort_values('I', ascending=False).reset_index()
    incentives = df_miners['I'].astype(float).values
    emissions = df_miners['E'].astype(float).values
    identities = df_miners['identity']
    hotkeys = df_miners['hotkey']
    coldkeys = df_miners['coldkey']
    trusts = df_miners['trust'].astype(float).values
    results = {'incentives': incentives,
               'emissions': emissions,
               'identities': identities,
               'hotkeys': hotkeys,
               'coldkeys': coldkeys,
               'trusts': trusts}
    return results

@app.get("/throughput", response_model=Throughput)
def throughput_metrics():
    """
    Get the throughput metrics
    """
    
    return utils.get_data_transferred(data_all, data_24h)



if __name__ == '__main__':

    load_data()

    start_scheduler()

    uvicorn.run(app, host='0.0.0.0', port=5001)
    

    # to test locally
    # curl -X GET http://0.0.0.0:5001/data