import os
from flask import Flask, request, redirect, url_for, render_template, jsonify, send_from_directory
from werkzeug.utils import secure_filename
import logging
from main import ReportWriter
from flask_sqlalchemy import SQLAlchemy
from werkzeug.security import generate_password_hash, check_password_hash
from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField, SubmitField
from wtforms.validators import DataRequired, Email, EqualTo, ValidationError
from flask import render_template, redirect, url_for, flash
from .forms import RegistrationForm, LoginForm
from .models import db, User

UPLOAD_FOLDER = '/home/ubuntu/dev/files'
log_directory = "/home/ubuntu/dev/logs"
if not os.path.exists(log_directory):
    os.makedirs(log_directory)

logging.basicConfig(filename=os.path.join(log_directory, 'dev.log'), level=logging.DEBUG)
app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER

db = SQLAlchemy()

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(64), unique=True, nullable=False)
    email = db.Column(db.String(120), unique=True, nullable=False)
    password_hash = db.Column(db.String(128), nullable=False)

    def set_password(self, password):
        self.password_hash = generate_password_hash(password)

    def check_password(self, password):
        return check_password_hash(self.password_hash, password)

class RegistrationForm(FlaskForm):
    username = StringField('Username', validators=[DataRequired()])
    email = StringField('Email', validators=[DataRequired(), Email()])
    password = PasswordField('Password', validators=[DataRequired()])
    confirm_password = PasswordField('Confirm Password', validators=[DataRequired(), EqualTo('password')])
    submit = SubmitField('Sign Up')

    def validate_username(self, username):
        user = User.query.filter_by(username=username.data).first()
        if user:
            raise ValidationError('That username is taken. Please choose a different one.')

    def validate_email(self, email):
        user = User.query.filter_by(email=email.data).first()
        if user:
            raise ValidationError('That email is taken. Please choose a different one.')

class LoginForm(FlaskForm):
    email = StringField('Email', validators=[DataRequired(), Email()])
    password = PasswordField('Password', validators=[DataRequired()])
    submit = SubmitField('Log In')


@app.route('/signup', methods=['GET', 'POST'])
def signup():
    form = RegistrationForm()
    if form.validate_on_submit():
        user = User(username=form.username.data, email=form.email.data)
        user.set_password(form.password.data)
        db.session.add(user)
        db.session.commit()
        flash('Congratulations, you are now a registered user!')
        return redirect(url_for('login'))
    return render_template('signup.html', title='Sign Up', form=form)

@app.route('/login', methods=['GET', 'POST'])
def login():
    form = LoginForm()
    if form.validate_on_submit():
        user = User.query.filter_by(email=form.email.data).first()
        if user is None or not user.check_password(form.password.data):
            flash('Invalid email or password')
            return redirect(url_for('login'))
        # Log in user
        # Redirect to the appropriate page
    return render_template('login.html', title='Log In', form=form)


@app.route('/', methods=['GET', 'POST'])
def upload_file():
    return render_template('index.html')

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