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<?php
/**
 * Settings page functions.
 *
 * @package Facebook_Messenger_Customer_Chat
 *
 * Copyright (C) 2017-present, Facebook, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

add_action( 'admin_enqueue_scripts', 'fbmcc_add_styles' );
add_action( 'admin_enqueue_scripts', 'fbmcc_localize_ajax' );
add_action( 'admin_menu', 'fbmcc_admin_menu' );
add_action( 'wp_ajax_fbmcc_update_options', 'fbmcc_update_options' );

/**
 * Get the capability require to change plugin settings.
 *
 * @return string Required capability.
 */
function fbmcc_get_options_capability() {
	/**
	 * Filters the capability required to manage plugin settings.
	 *
	 * @since 2.3
	 *
	 * @param bool $capability The capability required to manage plugin settings..
	 */
	$capability = apply_filters( 'fbmcc_options_capability', 'manage_options' );

return $capability;
}

/**
 * Add admin menu page.
 *
 * @return void
 */
function fbmcc_admin_menu() {
	$capability = fbmcc_get_options_capability();

add_options_page(
		esc_html__( 'Plugin settings', 'facebook-messenger-customer-chat' ),
		esc_html__( 'Facebook Chat', 'facebook-messenger-customer-chat' ),
		$capability,
		'facebook-messenger-customer-chat',
		'fbmcc_integration_settings'
	);
}

/**
 * Sanitize page types field.
 *
 * @param array $data Data to sanitize.
 *
 * @return array Page types.
 */
function fbmcc_sanitize_page_types( $data ) {
	$defaults = array(
		'all'            => '0',
		'category_index' => '0',
		'front_page'     => '0',
		'pages'          => array(),
		'pages_all'      => '0',
		'posts'          => '0',
		'product_pages'  => '0',
		'tag_index'      => '0',
	);

if ( ! is_array( $data ) ) {
		return $defaults;
	}

$page_types = array();

foreach ( $data as $key => $value ) {
		if ( ! array_key_exists( $key, $defaults ) ) {
			continue;
		}

if ( 'pages' === $key ) {
			$page_types[ $key ] = array_map( 'sanitize_text_field', (array) $value );
		} else {
			$page_types[ $key ] = '1' === $value ? '1' : '0';
		}
	}

$page_types = wp_parse_args( $page_types, $defaults );

return $page_types;
}

/**
 * Update plugin settings.
 *
 * @return void
 */
function fbmcc_update_options() {
	$capability = fbmcc_get_options_capability();

if ( current_user_can( $capability ) ) {
		check_ajax_referer( 'update_fbmcc_code' );

if ( isset( $_POST['pageTypes'] ) ) {
			update_option( 'fbmcc_page_types', fbmcc_sanitize_page_types( $_POST['pageTypes'] ) );
		}

if ( isset( $_POST['pageID'] ) ) {
			update_option( 'fbmcc_pageID', absint( $_POST['pageID'] ) );
		}

if ( isset( $_POST['locale'] ) ) {
			update_option( 'fbmcc_locale', sanitize_text_field( $_POST['locale'] ) );
		}

update_option( 'fbmcc_install_ts', time() );
	}

wp_die();
}

/**
 * Enqueue admin styles.
 *
 * @return void
 */
function fbmcc_add_styles() {
	wp_enqueue_style(
		'fbmcc-admin',
		plugins_url( '/settings.css', __FILE__ ),
		array(),
		FBMCC_VERSION,
		'all'
	);
}

/**
 * Enqueue admin JavaScript.
 *
 * @param string $hook_suffix The current admin page.
 *
 * @return void
 */
function fbmcc_localize_ajax( $hook_suffix ) {
	if ( 'settings_page_facebook-messenger-customer-chat' !== $hook_suffix && 'plugins.php' !== $hook_suffix ) {
		return;
	}

$capability = fbmcc_get_options_capability();

if ( ! current_user_can( $capability ) ) {
		return;
	}

wp_register_script(
		'fbmcc-admin',
		plugins_url( '/script.js', __FILE__ ),
		array(),
		FBMCC_VERSION,
		false
	);

wp_localize_script(
		'fbmcc-admin',
		'ajax_object',
		array(
			'ajaxurl' => admin_url( 'admin-ajax.php' ),
			'nonce'   => wp_create_nonce( 'update_fbmcc_code' ),
		)
	);

wp_enqueue_script( 'fbmcc-admin' );
}

/**
 * Display settings page.
 *
 * @return void
 */
function fbmcc_integration_settings() {
	$pages_arr  = get_pages();
	$page_id    = get_option( 'fbmcc_pageID' );
	$page_types = get_option( 'fbmcc_page_types' );
	?>

<?php
					if ( $page_id ) {
						$inbox_url = add_query_arg(
							'asset_id',
							$page_id,
							'https://business.facebook.com/latest/inbox/automated_responses'
						);

printf(
							'<p><a href="%1$s" class="fbmcc-availabilityLink" target="_blank">%2$s</a></p>',
							esc_url( $inbox_url ),
							esc_html__( 'Edit Availability and Automated Responses', 'facebook-messenger-customer-chat' )
						);
					}
					?>
				</div>
			</div>
		</div>

<ul>
					<li>
						<table>
							<tr>
								<td>
									<?php esc_html_e( 'Deploy Chat plugin on:', 'facebook-messenger-customer-chat' ); ?>
								</td>
								<td>
									<select id="fbmcc-deploymentSelector" class="fbmcc-displaySetting">
										<?php
										printf(
											'<option value="1" %1$s>%2$s</option>',
											selected( ! $page_types || '1' === $page_types['all'], true, false ),
											esc_html__( 'All WordPress pages', 'facebook-messenger-customer-chat' )
										);

printf(
											'<option value="0" %1$s>%2$s</option>',
											selected( $page_types && '0' === $page_types['all'], true, false ),
											esc_html__( 'Custom WordPress pages', 'facebook-messenger-customer-chat' )
										);
										?>
									</select>
								</td>
							</tr>
							<tr>
								<td></td>
								<td>
									<div class="fbmcc-deploymentMenu <?php echo ( ! $page_types || '1' === $page_types['all'] ) ? 'hidden' : ''; ?>">
										<ul>
											<li>
												<input
													type="checkbox"
													id="cbShowFrontPage"
													class="fbmcc-displaySetting"
													<?php checked( isset( $page_types['front_page'] ) && '1' === $page_types['front_page'] ); ?>
												/>
												<label for="cbShowFrontPage">
													<?php esc_html_e( 'Homepage', 'facebook-messenger-customer-chat' ); ?>
												</label>
											</li>

<li>
												<input
													aria-label="<?php esc_attr_e( 'Posts', 'facebook-messenger-customer-chat' ); ?>"
													type="checkbox"
													id="cbShowPosts"
													class="fbmcc-displaySetting fbmcc-menuParentItem"
													<?php checked( isset( $page_types['posts'] ) && '1' === $page_types['posts'] ); ?>
												/>
												<a
													href="javascript:;"
													id="fbmcc-postsSubmenuLink"
													class="fbmcc-menuParentLink"
													title="<?php esc_attr_e( 'Click for granular options', 'facebook-messenger-customer-chat' ); ?>"
												>
													<?php esc_html_e( 'Posts', 'facebook-messenger-customer-chat' ); ?>
													<img src="<?php echo esc_url( plugins_url( '/images/chevron-right.png', __FILE__ ) ); ?>" class="fbmcc-chevron" alt="&gt;" />
												</a>

<li>
												<input
													aria-label="<?php esc_attr_e( 'Pages', 'facebook-messenger-customer-chat' ); ?>"
													type="checkbox"
													id="cbShowPages"
													class="fbmcc-displaySetting fbmcc-menuParentItem"
													<?php
													checked(
														( isset( $page_types['all'] ) && '1' === $page_types['all'] ) ||
														( isset( $page_types['pages_all'] ) && '1' === $page_types['pages_all'] )
													);
													?>
												/>
												<?php if ( ! empty( $pages_arr ) ) : ?>
													<a
														href="javascript:;"
														id="fbmcc-pagesSubmenuLink"
														class="fbmcc-menuParentLink"
														title="<?php esc_attr_e( 'Click for granular options', 'facebook-messenger-customer-chat' ); ?>"
													>
												<?php endif; ?>

<?php esc_html_e( 'Pages', 'facebook-messenger-customer-chat' ); ?>

<?php if ( ! empty( $pages_arr ) ) : ?>
														<img src="<?php echo esc_url( plugins_url( '/images/chevron-right.png', __FILE__ ) ); ?>" class="fbmcc-chevron" alt="&gt;" />
													</a>
												<?php endif; ?>

<ul class="fbmcc-submenu hidden">
													<?php foreach ( $pages_arr as $page ) : ?>
														<li>
															<?php
															$checked = ! $page_types ||
																( isset( $page_types['all'] ) && '1' === $page_types['all'] ) ||
																( isset( $page_types['pages_all'] ) && '1' === $page_types['pages_all'] ) ||
																( isset( $page_types['pages'] ) && in_array( (string) $page->ID, $page_types['pages'], true ) );

printf(
																'<input
																	type="checkbox"
																	id="pageid_%1$s"
																	class="fbmcc-displaySetting fbmcc-submenuOption fbmcc-activePageOption"
																	%2$s
																/>
																<label for="pageid_%1$s">
																	%3$s
																</label>',
																esc_attr( $page->ID ),
																checked( $checked, true, false ),
																esc_html( $page->post_title )
															);
															?>
														</li>
													<?php endforeach; ?>
												</ul>
											</li>

<?php if ( is_plugin_active( 'woocommerce/woocommerce.php' ) ) : ?>
												<li>
													<input
														type="checkbox"
														id="cbShowProductPages"
														class="fbmcc-displaySetting"
														<?php checked( isset( $page_types['product_pages'] ) && '1' === $page_types['product_pages'] ); ?>
													/>
													<label for="cbShowProductPages">
														<?php echo esc_html__( 'WooCommerce Product pages', 'facebook-messenger-customer-chat' ); ?>
													</label>
												</li>
											<?php endif; ?>
										</ul>
									</div>

<li>
						<a href="https://wordpress.org/support/plugin/facebook-messenger-customer-chat/">
							<?php esc_html_e( 'If the troubleshooting steps in the guide do not solve your problem, please post in the plugin support forum.', 'facebook-messenger-customer-chat' ); ?>
						</a>
					</li>
				</ul>
			</div>
		</div>
	</div>
	<?php
}