from flask import Blueprint, render_template, redirect, url_for, flash, request
from flask_login import login_user, logout_user, login_required, current_user
from extensions import db, hash_password, check_password
from models import User, ESPORT_GAMES

auth_bp = Blueprint('auth', __name__, url_prefix='/auth')

@auth_bp.route('/login', methods=['GET', 'POST'])
def login():
    if current_user.is_authenticated:
        return redirect(url_for('main.dashboard'))

    if request.method == 'POST':
        username = request.form.get('username')
        password = request.form.get('password')
        user = User.query.filter_by(username=username).first()

        if user and check_password(user.password_hash, password):
            if not user.is_active_account:
                flash('This account has been deactivated.', 'danger')
                return render_template('pages/login.html')
            login_user(user)
            next_page = request.args.get('next')
            flash(f'Welcome back, {user.full_name}!', 'success')
            return redirect(next_page) if next_page else redirect(url_for('main.dashboard'))
        else:
            flash('Login unsuccessful. Please check username and password.', 'danger')

    return render_template('pages/login.html')

@auth_bp.route('/register', methods=['GET', 'POST'])
def register():
    if current_user.is_authenticated:
        return redirect(url_for('main.dashboard'))

    if request.method == 'POST':
        username = request.form.get('username')
        email = request.form.get('email')
        password = request.form.get('password')
        confirm_password = request.form.get('confirm_password')
        full_name = request.form.get('full_name')
        phone = request.form.get('phone')

        # E-Sports fields
        selected_games = request.form.getlist('games')
        trn_username = request.form.get('trn_username', '').strip()
        discord_username = request.form.get('discord_username', '').strip()
        league_os_profile = request.form.get('league_os_profile', '').strip()

        if password != confirm_password:
            flash('Passwords do not match.', 'danger')
            return render_template('pages/register.html', esport_games=ESPORT_GAMES)

        if User.query.filter_by(username=username).first():
            flash('Username already exists.', 'danger')
            return render_template('pages/register.html', esport_games=ESPORT_GAMES)

        if User.query.filter_by(email=email).first():
            flash('Email already registered.', 'danger')
            return render_template('pages/register.html', esport_games=ESPORT_GAMES)

        hashed_password = hash_password(password)
        user = User(
            username=username,
            password_hash=hashed_password,
            role='player',
            full_name=full_name,
            email=email,
            phone=phone,
            games=','.join(selected_games) if selected_games else None,
            trn_username=trn_username or None,
            discord_username=discord_username or None,
            league_os_profile=league_os_profile or None
        )
        db.session.add(user)
        db.session.commit()

        flash('Your account has been created! You can now log in.', 'success')
        return redirect(url_for('auth.login'))

    return render_template('pages/register.html', esport_games=ESPORT_GAMES)

@auth_bp.route('/logout')
@login_required
def logout():
    logout_user()
    flash('You have been logged out.', 'info')
    return redirect(url_for('auth.login'))