<?php
namespace AIZLabs\ChatAgent;

class Dashboard {
    public function __construct() {
        add_action('wp_ajax_aizl_get_dashboard_metrics', array($this, 'get_dashboard_metrics'));
        add_action('wp_ajax_aizl_get_dashboard_timeseries', array($this, 'get_dashboard_timeseries'));
        add_action('wp_ajax_aizl_get_conversation_history', array($this, 'get_conversation_history'));
    }

    public function get_dashboard_metrics() {
        if (!check_ajax_referer('aizl_dashboard', 'nonce', false)) {
            wp_send_json_error('Invalid nonce.');
            return;
        }

        if (!current_user_can('manage_options')) {
            wp_send_json_error('Unauthorized', 403);
        }
        $timezone = isset($_POST['timezone']) ? sanitize_text_field(wp_unslash($_POST['timezone'])) : 'UTC';
        $from = isset($_POST['from']) ? sanitize_text_field(wp_unslash($_POST['from'])) : null;
        $to = isset($_POST['to']) ? sanitize_text_field(wp_unslash($_POST['to'])) : null;
        $db = new DBHandler();
        $data = [
            'total_agents' => $db->get_total_agents(),
            'published_agents' => $db->get_published_agents(),
            'unique_users' => $db->get_unique_users($timezone, $from, $to),
            'total_interactions' => $db->get_total_interactions($timezone, $from, $to),
        ];
        wp_send_json_success($data);
    }

    public function get_dashboard_timeseries() {
        if (!check_ajax_referer('aizl_dashboard', 'nonce', false)) {
            wp_send_json_error('Invalid nonce.');
            return;
        }

        if (!current_user_can('manage_options')) {
            wp_send_json_error('Unauthorized', 403);
        }
        $timezone = isset($_POST['timezone']) ? sanitize_text_field(wp_unslash($_POST['timezone'])) : 'UTC';
        $from = isset($_POST['from']) ? sanitize_text_field(wp_unslash($_POST['from'])) : null;
        $to = isset($_POST['to']) ? sanitize_text_field(wp_unslash($_POST['to'])) : null;
        $bucket = isset($_POST['bucket']) ? sanitize_text_field(wp_unslash($_POST['bucket'])) : 'day';
        $db = new DBHandler();
        $result = $db->get_timeseries_data($timezone, $from, $to, $bucket);
        wp_send_json_success($result);
    }

    public function get_agents_dashboard() {
        if (!check_ajax_referer('aizl_dashboard', 'nonce', false)) {
            wp_send_json_error('Invalid nonce.');
            return;
        }

        if (!current_user_can('manage_options')) {
            wp_send_json_error('Unauthorized', 403);
        }
        $aizl_search = isset($_POST['search']) ? sanitize_text_field(wp_unslash($_POST['search'])) : '';
        $aizl_sort = isset($_POST['sort']) ? sanitize_text_field(wp_unslash($_POST['sort'])) : 'name';
        $aizl_order = isset($_POST['order']) ? sanitize_text_field(wp_unslash($_POST['order'])) : 'ASC';
        $aizl_page = isset($_POST['page']) ? intval($_POST['page']) : 1;
        $aizl_per_page = isset($_POST['per_page']) ? intval($_POST['per_page']) : 10;
        $aizl_db = new DBHandler();
        $aizl_result = $aizl_db->get_agents_dashboard($aizl_search, $aizl_sort, $aizl_order, $aizl_page, $aizl_per_page);
        wp_send_json_success($aizl_result);
    }

    public function get_conversation_history() {
        if (!check_ajax_referer('aizl_dashboard', 'nonce', false)) {
            wp_send_json_error('Invalid nonce.');
            return;
        }

        if (!current_user_can('manage_options')) {
            wp_send_json_error('Unauthorized', 403);
        }
        $agent_id = isset($_POST['agent_id']) ? intval($_POST['agent_id']) : 0;
        if (!$agent_id) {
            wp_send_json_error('Missing agent_id', 400);
        }

        $timezone = isset($_POST['timezone']) ? sanitize_text_field(wp_unslash($_POST['timezone'])) : 'UTC';
        $from = isset($_POST['from']) ? sanitize_text_field(wp_unslash($_POST['from'])) : null;
        $to = isset($_POST['to']) ? sanitize_text_field(wp_unslash($_POST['to'])) : null;
        $db = new DBHandler();
        $result = $db->get_conversations($agent_id, $timezone, $from, $to);
        wp_send_json_success($result);
    }


}