<?php
/**
 * Preset for settings.
 *
 * @since 4.7
 */

if ( ! defined( 'ABSPATH' ) ) {
	die( '-1' );
}

/**
 * Collection of static methods for work with settings presets
 *
 * @since 4.8
 */
class Vc_Settings_Preset {

	/**
	 * Get default preset id for specific shortcode
	 *
	 * @since 4.7
	 *
	 * @param string $shortcode_name
	 *
	 * @return mixed int|null
	 */
	public static function getDefaultSettingsPresetId( $shortcode_name = null ) {
		if ( ! $shortcode_name ) {
			return null;
		}

		$args = [
			'post_type' => 'vc_settings_preset',
			'post_mime_type' => self::constructShortcodeMimeType( $shortcode_name ),
			'posts_per_page' => - 1,
			'meta_key' => '_vc_default',
			'meta_value' => true,
		];

		$posts = get_posts( $args );

		if ( $posts ) {
			$default_id = $posts[0]->ID;
		} else {
			// check for vendor presets.
			$default_id = vc_vendor_preset()->getDefaultId( $shortcode_name );
		}

		return $default_id;
	}

	/**
	 * Set existing preset as default
	 *
	 * If this is vendor preset, clone it and set new one as default
	 *
	 * @param int $id If falsy, no default will be set.
	 * @param string $shortcode_name
	 *
	 * @return boolean
	 *
	 * @since 4.7
	 */
	public static function setAsDefaultSettingsPreset( $id, $shortcode_name ) {
		$post_id = self::getDefaultSettingsPresetId( $shortcode_name );
		if ( $post_id ) {
			delete_post_meta( $post_id, '_vc_default' );
		}

		if ( $id ) {
			if ( is_numeric( $id ) ) {
				// user preset.
				update_post_meta( $id, '_vc_default', true );
			} else {
				// vendor preset.
				$preset = vc_vendor_preset()->get( $id );

				if ( ! $preset || $shortcode_name !== $preset['shortcode'] ) {
					return false;
				}

				self::saveSettingsPreset( $preset['shortcode'], $preset['title'], wp_json_encode( $preset['params'] ), true );
			}
		}

		return true;
	}

	/**
	 * Get mime type for specific shortcode
	 *
	 * @since 4.7
	 *
	 * @param string $shortcode_name
	 *
	 * @return string
	 */
	public static function constructShortcodeMimeType( $shortcode_name ) {
		return 'vc-settings-preset/' . str_replace( '_', '-', $shortcode_name );
	}

	/**
	 * Get shortcode name from post's mime type
	 *
	 * @since 4.7
	 *
	 * @param string $post_mime_type
	 *
	 * @return string
	 */
	public static function extractShortcodeMimeType( $post_mime_type ) {
		$chunks = explode( '/', $post_mime_type );

		if ( 2 !== count( $chunks ) ) {
			return '';
		}

		return str_replace( '-', '_', $chunks[1] );
	}

	/**
	 * Get all presets
	 *
	 * @since 5.2
	 *
	 * @return array E.g. array(preset_id => value, preset_id => value, ...)
	 */
	public static function listAllPresets() {
		$list = [];

		$args = [
			'post_type' => 'vc_settings_preset',
			'posts_per_page' => - 1,
		];

		// user presets.
		$posts = get_posts( $args );
		foreach ( $posts as $post ) {
			$shortcode_name = self::extractShortcodeMimeType( $post->post_mime_type );
			$list[ $post->ID ] = (array) json_decode( $post->post_content );
		}

		// vendor presets.
		$presets = self::listDefaultVendorSettingsPresets();
		foreach ( $presets as $shortcode => $params ) {
			if ( ! isset( $list[ $shortcode ] ) ) {
				$list[ $shortcode ] = $params;
			}
		}

		return $list;
	}

	/**
	 * Get all default presets
	 *
	 * @since 4.7
	 *
	 * @return array E.g. array(shortcode_name => value, shortcode_name => value, ...)
	 */
	public static function listDefaultSettingsPresets() {
		$list = [];

		$args = [
			'post_type' => 'vc_settings_preset',
			'posts_per_page' => - 1,
			'meta_key' => '_vc_default',
			'meta_value' => true,
		];

		// user presets.
		$posts = get_posts( $args );
		foreach ( $posts as $post ) {
			$shortcode_name = self::extractShortcodeMimeType( $post->post_mime_type );
			$list[ $shortcode_name ] = (array) json_decode( $post->post_content );
		}

		// vendor presets.
		$presets = self::listDefaultVendorSettingsPresets();
		foreach ( $presets as $shortcode => $params ) {
			if ( ! isset( $list[ $shortcode ] ) ) {
				$list[ $shortcode ] = $params;
			}
		}

		return $list;
	}

	/**
	 * Get all default vendor presets
	 *
	 * @since 4.8
	 *
	 * @return array E.g. array(shortcode_name => value, shortcode_name => value, ...)
	 */
	public static function listDefaultVendorSettingsPresets() {
		$list = [];

		$presets = vc_vendor_preset()->getDefaults();
		foreach ( $presets as $id => $preset ) {
			$list[ $preset['shortcode'] ] = $preset['params'];
		}

		return $list;
	}

	/**
	 * Save shortcode preset
	 *
	 * @since 4.7
	 *
	 * @param string $shortcode_name
	 * @param string $title
	 * @param string $content
	 * @param boolean $is_default
	 *
	 * @return mixed int|false Post ID
	 */
	public static function saveSettingsPreset( $shortcode_name, $title, $content, $is_default = false ) {
		$post_id = wp_insert_post( [
			'post_title' => $title,
			'post_content' => $content,
			'post_status' => 'publish',
			'post_type' => 'vc_settings_preset',
			'post_mime_type' => self::constructShortcodeMimeType( $shortcode_name ),
		], false );

		if ( $post_id && $is_default ) {
			self::setAsDefaultSettingsPreset( $post_id, $shortcode_name );
		}

		return $post_id;
	}

	/**
	 * Get list of all presets for specific shortcode
	 *
	 * @since 4.7
	 *
	 * @param string $shortcode_name
	 *
	 * @return array E.g. array(id1 => title1, id2 => title2, ...)
	 */
	public static function listSettingsPresets( $shortcode_name = null ) {
		$list = [];

		if ( ! $shortcode_name ) {
			return $list;
		}

		$args = [
			'post_type' => 'vc_settings_preset',
			'orderby' => [ 'post_date' => 'DESC' ],
			'posts_per_page' => - 1,
			'post_mime_type' => self::constructShortcodeMimeType( $shortcode_name ),
		];

		$posts = get_posts( $args );
		foreach ( $posts as $post ) {
			$list[ $post->ID ] = $post->post_title;
		}

		return $list;
	}

	/**
	 * Get list of all vendor presets for specific shortcode
	 *
	 * @since 4.8
	 *
	 * @param string $shortcode_name
	 *
	 * @return array E.g. array(id1 => title1, id2 => title2, ...)
	 */
	public static function listVendorSettingsPresets( $shortcode_name = null ) {
		$list = [];

		if ( ! $shortcode_name ) {
			return $list;
		}

		$presets = vc_vendor_preset()->getAll( $shortcode_name );

		foreach ( $presets as $id => $preset ) {
			$list[ $id ] = $preset['title'];
		}

		return $list;
	}

	/**
	 * Get specific shortcode preset
	 *
	 * @since 4.7
	 *
	 * @param mixed $id Can be int (user preset) or string (vendor preset).
	 * @param array|bool $initial If true, return array instead of string.
	 *
	 * @return mixed string?array Post content
	 */
	public static function getSettingsPreset( $id, $initial = false ) {
		if ( is_numeric( $id ) ) {
			// user preset.

			$post = get_post( $id );

			if ( ! $post ) {
				return false;
			}

			$params = $initial ? (array) json_decode( $post->post_content ) : $post->post_content;
		} else {
			// vendor preset.

			$preset = vc_vendor_preset()->get( $id );

			if ( ! $preset ) {
				return false;
			}

			$params = $preset['params'];
		}

		return $params;
	}

	/**
	 * Delete shortcode preset
	 *
	 * @since 4.7
	 *
	 * @param int $post_id Post must be of type 'vc_settings_preset'.
	 *
	 * @return bool
	 */
	public static function deleteSettingsPreset( $post_id ) {
		$post = get_post( $post_id );

		if ( ! $post || 'vc_settings_preset' !== $post->post_type ) {
			return false;
		}

		return (bool) wp_delete_post( $post_id, true );
	}

	/**
	 * Return rendered popup menu
	 *
	 * @since 4.7
	 *
	 * @param string $shortcode_name
	 *
	 * @return string
	 */
	public static function getRenderedSettingsPresetPopup( $shortcode_name ) {
		$list_vendor_presets = self::listVendorSettingsPresets( $shortcode_name );
		$list_presets = self::listSettingsPresets( $shortcode_name );

		$default_id = self::getDefaultSettingsPresetId( $shortcode_name );

		if ( ! $default_id ) {
			$default_id = vc_vendor_preset()->getDefaultId( $shortcode_name );
		}

		ob_start();
		vc_include_template( apply_filters( 'vc_render_settings_preset_popup', 'editors/partials/settings_presets_popup.tpl.php' ), [
			'list_presets' => [
				$list_presets,
				$list_vendor_presets,
			],
			'default_id' => $default_id,
			'shortcode_name' => $shortcode_name,
		] );

		$html = ob_get_clean();

		return $html;
	}

	/**
	 * Add presets for specific shortcodes
	 *
	 * @param array $shortcodes
	 *
	 * @return array
	 * @throws \Exception
	 */
	public static function addVcPresetsToShortcodes( $shortcodes ) {
		if ( vc_user_access()->part( 'presets' )->can()->get() ) {
			$shortcodes_and_presets = [];

			foreach ( $shortcodes as $shortcode ) {
				$presets = self::listSettingsPresets( $shortcode['base'] );
				$shortcodes_and_presets[ $shortcode['base'] ] = $shortcode;
				if ( ! empty( $presets ) ) {
					foreach ( $presets as $preset_id => $preset ) {
						$shortcodes_and_presets[ $preset_id ] = [
							'name' => $preset,
							'base' => $shortcode['base'],
							'description' => $shortcode['description'],
							'presetId' => $preset_id,
							'_category_ids' => [ '_my_elements_' ],
						];

						if ( isset( $shortcode['icon'] ) ) {
							$shortcodes_and_presets[ $preset_id ]['icon'] = $shortcode['icon'];
						}
					}
				}
			}

			return $shortcodes_and_presets;
		}

		return $shortcodes;
	}

	/**
	 * Add preset category
	 *
	 * @param array $category
	 *
	 * @return array
	 */
	public static function addPresetCategory( $category ) {
		$preset_category = (array) '_my_elements_';
		$category = array_merge( $preset_category, $category );

		return $category;
	}
}
