import copy

from flask import Blueprint, request, redirect, flash
import auth
import config_utils
import sanitize

_PAGE = 'captiveportal'

bp = Blueprint(_PAGE, __name__)


@bp.route('/action/captiveportal/options_save', methods=['POST'])
@auth.require_level('administrator')
def options_save():
    cfg    = config_utils.load_config()
    before = copy.deepcopy(cfg.get('captive_portal', {}))

    try:
        http_port = int(request.form.get('http_port', '8081'))
        if not (1024 <= http_port <= 65535):
            raise ValueError
    except (ValueError, TypeError):
        flash('HTTP port must be between 1024 and 65535.', 'error')
        return redirect(f'/{_PAGE}')

    https_domain = sanitize.description(request.form.get('https_domain', ''))

    after = {**before, 'http_port': http_port, 'https_domain': https_domain}
    cfg.setdefault('captive_portal', {}).update(after)
    changes = config_utils.diff_fields(before, after)
    flash(config_utils.record_group(
        cfg, 'captive_portal', 'setting', 'captive_portal', changes, 'core apply'
    ), 'success')
    return redirect(f'/{_PAGE}')


@bp.route('/action/captiveportal/splash_save', methods=['POST'])
@auth.require_level('administrator')
def splash_save():
    cfg    = config_utils.load_config()
    before = copy.deepcopy(cfg.get('captive_portal', {}))

    splash_text = sanitize.description(request.form.get('splash_text', ''))
    terms = [t.strip() for t in request.form.getlist('terms') if t.strip()]

    after = {**before, 'splash_text': splash_text, 'terms': terms}
    cfg.setdefault('captive_portal', {}).update(after)
    changes = config_utils.diff_fields(before, after)
    flash(config_utils.record_group(
        cfg, 'captive_portal', 'setting', 'captive_portal', changes, 'core apply'
    ), 'success')
    return redirect(f'/{_PAGE}')