<?php

/**
 * @param array $form
 * @param array $form_state
 *
 * @return array
 */
function mkbh_unique_node_admin_form($form = [], $form_state = [])
{
    $form = [];
    $views = views_get_all_views();
    $settigs = variable_get('mkbh_unique_node_views', []);
    if (!empty($views)) {
        foreach ($views as $view) {
            if ($view->disabled == 1) {
                continue;
            }
            $form["views_settings_" . $view->name] = [
                '#type' => 'fieldset',
                '#title' => $view->human_name . " ({$view->name})",
                '#tree' => TRUE,
            ];
            foreach ($view->display as $display) {
                $form["views_settings_" . $view->name][$display->id] = [
                    '#type' => 'checkbox',
                    '#title' => $display->display_title . " ({$display->id})",

                ];
                if (!empty($settigs[$view->name][$display->id])) {
                    $form["views_settings_" . $view->name][$display->id]['#default_value'] = TRUE;
                }
            }
        }
    }
    $form['submit'] = [
        '#type' => 'submit',
        '#value' => t("Save"),
    ];
    return $form;
}

/**
 * @param array $form
 * @param array $form_state
 */
function mkbh_unique_node_admin_form_submit($form = [], $form_state = [])
{
    $settings = [];
    $settings_prefix = 'views_settings_';
    foreach ($form_state['values'] as $key => $value) {
        if (strpos($key, $settings_prefix) !== FALSE) {
            foreach ($value as $display => $status) {
                if ($status == 1) {
                    $settings[str_replace($settings_prefix, '', $key)][$display] = $status;
                }
            }
        }
    }
    variable_set('mkbh_unique_node_views', $settings);
}