from flask import Blueprint, render_template, request, redirect, url_for, session, flash
from app.models.models import Token, Settings
from app import db
import random
import string
from datetime import datetime

bp = Blueprint('auth', __name__)

CONTRIBUTOR_TYPES = [
    {'value': 'government', 'label': 'Government Officer', 'description': 'Public sector representatives'},
    {'value': 'community', 'label': 'Community Member', 'description': 'Local residents and community leaders'},
    {'value': 'industry', 'label': 'Industry Representative', 'description': 'Business and industry stakeholders'},
    {'value': 'ngo', 'label': 'NGO/Non-Profit', 'description': 'Civil society organizations'},
    {'value': 'academic', 'label': 'Academic/Researcher', 'description': 'Universities and research institutions'},
    {'value': 'other', 'label': 'Other Stakeholder', 'description': 'Other interested parties'}
]

def generate_token(contributor_type):
    prefix = contributor_type[:3].upper()
    random_part = ''.join(random.choices(string.ascii_uppercase + string.digits, k=6))
    timestamp_part = str(int(datetime.now().timestamp()))[-4:]
    return f"{prefix}-{random_part}{timestamp_part}"

@bp.route('/')
def index():
    return redirect(url_for('auth.login'))

@bp.route('/login', methods=['GET', 'POST'])
def login():
    if request.method == 'POST':
        token_str = request.form.get('token')
        token = Token.query.filter_by(token=token_str).first()

        if token:
            session['token'] = token.token
            session['type'] = token.type

            if token.type == 'admin':
                return redirect(url_for('admin.overview'))
            else:
                return redirect(url_for('submissions.submit'))
        else:
            flash('Invalid token', 'error')

    return render_template('login.html')

@bp.route('/generate', methods=['GET', 'POST'])
def generate():
    token_generation_enabled = Settings.get_setting('token_generation_enabled', 'true') == 'true'

    if request.method == 'POST':
        if not token_generation_enabled:
            flash('Token generation is currently disabled', 'error')
            return redirect(url_for('auth.generate'))

        contributor_type = request.form.get('type')
        user_name = request.form.get('name', '').strip()

        if not contributor_type or contributor_type not in [t['value'] for t in CONTRIBUTOR_TYPES]:
            flash('Please select a valid role', 'error')
            return redirect(url_for('auth.generate'))

        # Generate token
        from datetime import datetime
        token_str = generate_token(contributor_type)
        name = user_name if user_name else f"{contributor_type.capitalize()} User"

        new_token = Token(
            token=token_str,
            type=contributor_type,
            name=name
        )

        db.session.add(new_token)
        db.session.commit()

        return render_template('generate.html',
                             contributor_types=CONTRIBUTOR_TYPES,
                             token_generation_enabled=token_generation_enabled,
                             generated_token=token_str)

    return render_template('generate.html',
                         contributor_types=CONTRIBUTOR_TYPES,
                         token_generation_enabled=token_generation_enabled)

@bp.route('/logout')
def logout():
    session.clear()
    return redirect(url_for('auth.login'))