<?php
/**
 * Options handler class
 */

if (!defined('ABSPATH')) {
    exit;
}

class MLS_Options {

    /**
     * Option key for storing all plugin options
     */
    const OPTION_KEY = 'mls_plugin_options';

    /**
     * Default options
     */
    private $defaults = array(
        'api_url' => '',
        'api_token' => '',
        'originating_system' => 'northstar',
        'auto_sync_enabled' => false,
        'sync_interval' => 'hourly',
        'sync_media' => true,
        'last_full_sync' => null,
        'last_incremental_sync' => null,
    );

    /**
     * Get all options
     *
     * @return array
     */
    public function get_all() {
        $options = get_option(self::OPTION_KEY, array());
        return wp_parse_args($options, $this->defaults);
    }

    /**
     * Get a single option
     *
     * @param string $key Option key
     * @param mixed $default Default value if not set
     * @return mixed
     */
    public function get($key, $default = null) {
        $options = $this->get_all();

        if (isset($options[$key])) {
            return $options[$key];
        }

        if (null !== $default) {
            return $default;
        }

        return isset($this->defaults[$key]) ? $this->defaults[$key] : null;
    }

    /**
     * Set a single option
     *
     * @param string $key Option key
     * @param mixed $value Option value
     * @return bool
     */
    public function set($key, $value) {
        $options = $this->get_all();
        $options[$key] = $value;
        return update_option(self::OPTION_KEY, $options);
    }

    /**
     * Set multiple options
     *
     * @param array $values Key-value pairs
     * @return bool
     */
    public function set_multiple($values) {
        $options = $this->get_all();
        foreach ($values as $key => $value) {
            $options[$key] = $value;
        }
        return update_option(self::OPTION_KEY, $options);
    }

    /**
     * Delete a single option
     *
     * @param string $key Option key
     * @return bool
     */
    public function delete($key) {
        $options = $this->get_all();
        if (isset($options[$key])) {
            unset($options[$key]);
            return update_option(self::OPTION_KEY, $options);
        }
        return true;
    }

    /**
     * Delete all options
     *
     * @return bool
     */
    public function delete_all() {
        return delete_option(self::OPTION_KEY);
    }

    /**
     * Get API URL from wp-config or options
     *
     * @return string
     */
    public function get_api_url() {
        // Check wp-config constant first
        if (defined('MLSGRID_API_URL') && MLSGRID_API_URL) {
            return MLSGRID_API_URL;
        }

        return $this->get('api_url', 'https://api.mlsgrid.com/v2');
    }

    /**
     * Get API token from wp-config or options
     *
     * @return string
     */
    public function get_api_token() {
        // Check wp-config constant first
        if (defined('MLSGRID_ACCESS_TOKEN') && MLSGRID_ACCESS_TOKEN) {
            return MLSGRID_ACCESS_TOKEN;
        }

        return $this->get('api_token', '');
    }

    /**
     * Get originating system name
     *
     * @return string
     */
    public function get_originating_system() {
        return $this->get('originating_system', 'northstar');
    }

    /**
     * Check if API is configured
     *
     * @return bool
     */
    public function is_configured() {
        return !empty($this->get_api_url()) && !empty($this->get_api_token());
    }

    /**
     * Check if auto sync is enabled
     *
     * @return bool
     */
    public function is_auto_sync_enabled() {
        return (bool) $this->get('auto_sync_enabled', false);
    }

    /**
     * Get sync interval
     *
     * @return string WordPress cron interval name
     */
    public function get_sync_interval() {
        return $this->get('sync_interval', 'hourly');
    }

    /**
     * Check if media sync is enabled
     *
     * @return bool
     */
    public function is_media_sync_enabled() {
        return (bool) $this->get('sync_media', true);
    }

    /**
     * Update last sync timestamps
     *
     * @param string $type 'full' or 'incremental'
     * @return bool
     */
    public function update_last_sync($type = 'incremental') {
        $key = 'full' === $type ? 'last_full_sync' : 'last_incremental_sync';
        return $this->set($key, current_time('mysql'));
    }

    /**
     * Get last sync time
     *
     * @param string $type 'full' or 'incremental'
     * @return string|null MySQL datetime or null
     */
    public function get_last_sync($type = 'incremental') {
        $key = 'full' === $type ? 'last_full_sync' : 'last_incremental_sync';
        return $this->get($key);
    }
}