from flask import request, Flask # requires flask! please download before running :)
from flask import render_template
from dotenv import load_dotenv
import os
global pilen
global pilength
app = Flask(__name__)
load_dotenv()
name = os.getenv("NAME")
email = os.getenv("EMAIL")
multi = int(os.getenv("MULTI"))
atEmail = email.replace("@", " at ")
safeEmail = atEmail.replace(".", " dot ")
@app.route('/api/getpi')
def getpi():
    if request.method == 'GET':
        try:
            f = open("picalc/pi.txt", "r")
            return f.read()
        except:
            return "picalc/pi.txt wasn't found! Contact " + name + " at " + email + " if this persists."
    else:
        return "Invaild method! /getpi is designed for GET requests, not " + request.method
    
@app.route('/api/postpi', methods=['POST', 'GET'])
def postpi():
    f = open("picalc/pi.txt", "r")
    checkCorrectly = 3.14 * multi
    if request.form['pi']:
        if f.read() == "No clients have connected yet. Become one of the first!":
            if request.form['pi'].startswith(str(checkCorrectly)) == True:
                with open("picalc/pi.txt", "w") as f:
                    f.write(request.form['pi'])
            else:
                return "Invalid string!"
        else:
            if request.form['pi'].startswith(f.read()) == True:
                with open("picalc/pi.txt", "w") as f:
                    f.write(request.form['pi'])
            else:
                return "Invalid string!"
    else:
        return "Request not found!"

@app.route('/')
def lander():
    try:
        f = open("picalc/pi.txt", "r")
        piresult = f.read()
        if piresult == "No clients have connected yet. Become one of the first!":
            piresult = "No clients have connected. Become one of the first!"
        else:
            try:
                pilength = len(str(piresult))
                print(pilength)
                pilen = "Current Pi length is " + str(pilength) + " digits!"
            except:
                pilen = "Current Pi length couldn't be calculated!"
            piresult = "Current Pi count is " + piresult
    except:
        piresult = "picalc/pi.txt wasn't found on this server! It will be created now to fix this issue."
        try:
            with open("picalc/pi.txt", "w") as f:
                f.write("No clients have connected yet. Become one of the first!")
        except:
            piresult = f"Couldn't create pi.txt! Please contact {name} at {safeEmail} to fix this!"
    if request.method == 'GET':
        ver = open("ver.txt", "r")
        version = ver.read()
        return render_template('index.html', pi=piresult, name=name, email=safeEmail, version=version, pilen="Current Pi length is " + str(pilength), multi=str(multi))
    else:
        return "Please use GET to access this page."

@app.route('/api/getlen')
def getlen():
    f = open("picalc/pi.txt", "r")
    piresult = f.read()
    if not piresult == "No clients have connected yet. Become one of the first!":
        pilength = len(str(piresult))
        return str(pilength)
    else:
        return "Length cannot be calculated due to Pi not being calculated yet."
    
@app.route('/api/getver')
def getver():
    try:
        f = open("ver.txt", "r")
        version = f.read()
        return version
    except:
        return "ver.txt not found on server"

@app.route('/api/getname')
def getname():
    return name

@app.route('/api/getemail')
def getemail():
    return safeEmail

@app.route('/api/getmultiplier')
def getMultiply():
    return str(multi)
    
@app.errorhandler(404)
def page_not_found(error):
    return render_template('404.html'), 404