<?php

if (!defined( 'ABSPATH' )) exit('restricted access');

if (!class_exists('WPAnyIpsumSettings')) {

	class WPAnyIpsumSettings {

		private $settings_page = 'anyipsum-settings';
		private $settings_key_general = 'anyipsum-settings-general';
		private $settings_key_filler = 'anyipsum-settings-custom-filler';
		private $settings_key_api = 'anyipsum-settings-api';
		private $settings_key_oembed = 'anyipsum-settings-oembed';
		private $settings_key_help = 'anyipsum-settings-help';
		private $plugin_settings_tabs = array();


		public function plugins_loaded() {
			// admin menus
			add_action('admin_init', array($this, 'admin_init'));
			add_action('admin_menu', array($this, 'admin_menu'));

			add_filter( 'anyipsum-setting-is-enabled', array($this, 'setting_is_enabled'), 10, 3);
			add_filter( 'anyipsum-setting-get', array($this, 'setting_get'), 10, 3);

		}


		public function activation_hook() {

			// create default settings
			add_option( $this->settings_key_general, array(
				'name' => 'Bacon',
				'start-with' => 'Bacon ipsum dolor amet',
				'querystring-all-custom' => 'all-custom',
				'querystring-custom-and-filler' => 'custom-and-filler',
				'button-text' => 'Give Me Bacon',
				'all-custom-text' => 'All Meat',
				'custom-and-filler-text' => 'Meat and Filler',
			), '', $autoload = 'no' );

			add_option( $this->settings_key_api, array(
				'api-enabled' => '0',
				'api-endpoint' => 'ipsum-api',
			), '', $autoload = 'no' );

			add_option( $this->settings_key_api, array(
				'oembed-enabled' => '0',
				'oembed-endpoint' => 'ipsum-oembed',
			), '', $autoload = 'no' );

			$custom = '';
			$filler = '';

			if (class_exists('WPAnyIpsumGenerator')) {
				$WPAnyIpsumGenerator = new WPAnyIpsumGenerator();
				$custom = implode( "\n", $WPAnyIpsumGenerator->default_custom() );
				$filler = implode( "\n", $WPAnyIpsumGenerator->default_filler() );
			}

			add_option( $this->settings_key_filler, array('custom-words' => $custom, 'filler-words' => $filler), '', $autoload = 'no' );

		}


		public function deactivation_hook() {
			// placeholder in case we need deactivation code
		}


		function admin_init() {
			$this->register_general_settings();
			$this->register_filler_settings();
			$this->register_api_settings();
			$this->register_oembed_settings();
			$this->register_help_tab();
		}


		function register_general_settings() {
			$key = $this->settings_key_general;
			$this->plugin_settings_tabs[$key] = __('General', 'any-ipsum');

			register_setting( $key, $key );

			$section = 'general';

			add_settings_section( $section, '', array( $this, 'section_header' ), $key );

			add_settings_field( 'name', __('Your Ipsum Name', 'any-ipsum'), array( $this, 'settings_input' ), $key, $section,
				array('key' => $key, 'name' => 'name', 'size' => 20, 'maxlength' => 50, 'after' => 'Example: Bacon, Hipster, Cupcake, etc'));

			add_settings_field( 'all-custom-text', __('All Custom Text', 'any-ipsum'), array( $this, 'settings_input' ), $key, $section,
				array('key' => $key, 'name' => 'all-custom-text', 'size' => 20, 'maxlength' => 50, 'after' => 'Example: All Meat, Hipster neat'));

			add_settings_field( 'custom-and-filler-text', __('Custom and Filler Text', 'any-ipsum'), array( $this, 'settings_input' ), $key, $section,
				array('key' => $key, 'name' => 'custom-and-filler-text', 'size' => 20, 'maxlength' => 50, 'after' => 'Example: Meat and Filler, Hipster with a shot of Latin'));

			add_settings_field( 'start-with', __('Start With Text', 'any-ipsum'), array( $this, 'settings_input' ), $key, $section,
				array('key' => $key, 'name' => 'start-with', 'size' => 50, 'maxlength' => 50, 'after' => 'Example: Bacon ipsum dolor sit amet'));

			add_settings_field( 'button-text', __('Button Text', 'any-ipsum'), array( $this, 'settings_input' ), $key, $section,
				array('key' => $key, 'name' => 'button-text', 'size' => 50, 'maxlength' => 50, 'after' => 'Example: Give me bacon, Beer me!, etc.'));

			add_settings_field( 'querystring-all-custom', __('Querystring for All Custom', 'any-ipsum'), array( $this, 'settings_input' ), $key, $section,
				array('key' => $key, 'name' => 'querystring-all-custom', 'size' => 50, 'maxlength' => 50, 'after' => 'In case you want something different (like all-meat, hipster-centric, etc.)'));

			add_settings_field( 'querystring-custom-and-filler', __('Querystring for Custom and Filler', 'any-ipsum'), array( $this, 'settings_input' ), $key, $section,
				array('key' => $key, 'name' => 'querystring-custom-and-filler', 'size' => 50, 'maxlength' => 50, 'after' => 'In case you want something different (like meat-and-filler, hipster-latin, etc.)'));
		}


		function register_filler_settings() {
			$key = $this->settings_key_filler;
			$this->plugin_settings_tabs[$key] = __('Custom and Filler', 'any-ipsum');

			register_setting( $key, $key );

			$section = 'custom-and-filler';

			add_settings_section( $section, '', array( $this, 'section_header' ), $key );

			add_settings_field( 'custom-words', __('Custom Words', 'any-ipsum'), array( $this, 'settings_textarea' ), $key, $section,
				array('key' => $key, 'name' => 'custom-words', 'rows' => 10, 'cols' => 40, 'after' => 'One word/phrase per line'));

			add_settings_field( 'filler-words', __('Filler Words', 'any-ipsum'), array( $this, 'settings_textarea' ), $key, $section,
				array('key' => $key, 'name' => 'filler-words', 'rows' => 10, 'cols' => 40, 'after' => 'One word/phrase per line'));

		}


		function register_api_settings() {
			$key = $this->settings_key_api;
			$this->plugin_settings_tabs[$key] = __('API', 'any-ipsum');

			register_setting( $key, $key );

			$section = 'api';

			add_settings_section( $section, '', array( $this, 'section_header' ), $key );

			add_settings_field( 'api-enabled', __('Enabled', 'any-ipsum'), array( $this, 'settings_yes_no' ), $key, $section,
				array('key' => $key, 'name' => 'api-enabled'));

			$permalink_structure = get_option( 'permalink_structure' );
			$permalink_warning = empty($permalink_structure) ? ' (please anable any non-default Permalink structure)' : '';

			add_settings_field( 'api-endpoint', __('Endpoint Page Name', 'any-ipsum'), array( $this, 'settings_input' ), $key, $section,
				array('key' => $key, 'name' => 'api-endpoint', 'size' => 20, 'maxlength' => 50, 'after' => 'Example: api, ipsum-api, etc' . $permalink_warning));

		}


		function register_oembed_settings() {
			$key = $this->settings_key_oembed;
			$this->plugin_settings_tabs[$key] = __('oEmbed', 'any-ipsum');

			register_setting( $key, $key );

			$section = 'oembed';

			add_settings_section( $section, '', array( $this, 'section_header' ), $key );

			add_settings_field( 'oembed-enabled', __('Enabled', 'any-ipsum'), array( $this, 'settings_yes_no' ), $key, $section,
				array('key' => $key, 'name' => 'oembed-enabled'));

			$permalink_structure = get_option( 'permalink_structure' );
			$permalink_warning = empty($permalink_structure) ? ' (please anable any non-default Permalink structure)' : '';

			add_settings_field( 'oembed-endpoint', __('oEmbed Page Name', 'any-ipsum'), array( $this, 'settings_input' ), $key, $section,
				array('key' => $key, 'name' => 'oembed-endpoint', 'size' => 20, 'maxlength' => 50, 'after' => 'Example: oembed, ipsum-oembed' . $permalink_warning));

		}


		function register_help_tab() {
			$key = $this->settings_key_help;
			$this->plugin_settings_tabs[$key] =  __('Help', 'any-ipsum');

			register_setting( $key, $key );

			$section = 'help';

			add_settings_section( $section, '', array( $this, 'section_header' ), $key );

		}


		function setting_is_enabled($enabled, $key, $setting) {
			return '1' === $this->setting_get('0', $key, $setting);
		}


		function setting_get($value, $key, $setting) {

			$args = wp_parse_args( get_option($key),
				array(
					$setting => $value,
				)
			);

			return $args[$setting];
		}


		function settings_input($args) {

			$args = wp_parse_args( $args,
				array(
					'name' => '',
					'key' => '',
					'maxlength' => 50,
					'size' => 30,
					'after' => '',
				)
			);


			$name = $args['name'];
			$key = $args['key'];
			$size = $args['size'];
			$maxlength = $args['maxlength'];

			$option = get_option($key);
			$value = isset($option[$name]) ? esc_attr($option[$name]) : '';

			echo "<div><input id='{$name}' name='{$key}[{$name}]'  type='text' value='" . $value . "' size='{$size}' maxlength='{$maxlength}' /></div>";
			if (!empty($args['after']))
				echo '<div>' . __($args['after'], 'any-ipsum') . '</div>';

		}


		function settings_textarea($args) {

			$args = wp_parse_args( $args,
				array(
					'name' => '',
					'key' => '',
					'rows' => 10,
					'cols' => 40,
					'after' => '',
				)
			);


			$name = $args['name'];
			$key = $args['key'];
			$rows = $args['rows'];
			$cols = $args['cols'];

			$option = get_option($key);
			$value = isset($option[$name]) ? esc_attr($option[$name]) : '';

			echo "<div><textarea id='{$name}' name='{$key}[{$name}]' rows='{$rows}' cols='{$cols}'>" . $value . "</textarea></div>";
			if (!empty($args['after']))
				echo '<div>' . $args['after'] . '</div>';

		}


		function settings_yes_no($args) {

			$args = wp_parse_args( $args,
				array(
					'name' => '',
					'key' => '',
					'after' => '',
				)
			);

			$name = $args['name'];
			$key = $args['key'];

			$option = get_option($key);
			$value = isset($option[$name]) ? esc_attr($option[$name]) : '';

			if (empty($value))
				$value = '0';

			echo '<div>';
			echo "<label><input id='{$name}_1' name='{$key}[{$name}]'  type='radio' value='1' " . ('1' === $value ? " checked=\"checked\"" : "") . "/>" . __('Yes', 'any-ipsum') . "</label> ";
			echo "<label><input id='{$name}_0' name='{$key}[{$name}]'  type='radio' value='0' " . ('0' === $value ? " checked=\"checked\"" : "") . "/>" . __('No', 'any-ipsum') . "</label> ";
			echo '</div>';

			if (!empty($args['after']))
				echo '<div>' . __($args['after'], 'any-ipsum') . '</div>';
		}


		function admin_menu() {
			add_options_page( __('Any Ipsum Settings', 'any-ipsum'), __('Any Ipsum', 'any-ipsum'), 'manage_options', $this->settings_page, array($this, 'options_page' ), 30);
		}


		function options_page() {

			$tab = !empty( $_GET['tab'] ) ? $_GET['tab'] : $this->settings_key_general;
			?>
			<div class="wrap">
				<?php $this->plugin_options_tabs(); ?>
				<form method="post" action="options.php" class="options-form">
					<?php settings_fields( $tab ); ?>
					<?php do_settings_sections( $tab ); ?>
					<?php
						if ($this->settings_key_help !== $tab)
							submit_button(__('Save Settings', 'any-ipsum'), 'primary', 'submit', true);
					?>
				</form>
			</div>
			<?php
		}


		function plugin_options_tabs() {
			$current_tab = !empty( $_GET['tab'] ) ? $_GET['tab'] : $this->settings_key_general;
			echo '<h2>' . __('Any Ipsum Settings', 'any-ipsum') . '</h2><h2 class="nav-tab-wrapper">';
			foreach ( $this->plugin_settings_tabs as $tab_key => $tab_caption ) {
				$active = $current_tab == $tab_key ? 'nav-tab-active' : '';
				echo '<a class="nav-tab ' . $active . '" href="?page=' . $this->settings_page . '&tab=' . $tab_key . '">' . $tab_caption . '</a>';
			}
			echo '</h2>';
		}


		function section_header($args) {

			switch ($args['id']) {
				case 'help';
					include_once 'admin-help.php';
					break;
				case 'api':
					$output = __('Allows for a JSON API to your custom ipsum.', 'any-ipsum');
					$endpoint = $this->setting_get( '', $this->settings_key_api, 'api-endpoint' );
					if (!empty($endpoint)) {
						$output .= '<br/>' . __('Example', 'any-ipsum') . ': ';
						$url = home_url( $endpoint ) . '?type=' . esc_attr( apply_filters( 'anyipsum-setting-get', '', 'anyipsum-settings-general', 'querystring-all-custom' ) ) . '&amp;paras=3&amp;start-with-lorem=1';
						$output .= '<a target="_blank" href="' . $url . '">' . $url . '</a>';
					}
					break;
			}

			if (!empty($output))
				echo '<p class="settings-section-header">' . $output . '</p>';

		}


	}

}