<?php

namespace AIbender\ArticleVault\Settings;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

use AIbender\ArticleVault\Core\Constants;
use AIbender\ArticleVault\Core\ModuleInterface;

class SettingsManager implements ModuleInterface {

	public function register(): void {

		$this->register_settings();

	}

	public function register_settings(): void {

		register_setting(
			Constants::OPTION_GROUP,
			Constants::OPTION_PREFIX . 'articlevault_enabled',
			array(
				'type'              => 'boolean',
				'default'           => true,
				'sanitize_callback' => array( $this, 'sanitize_checkbox' ),
			)
		);

		register_setting(
			Constants::OPTION_GROUP,
			Constants::OPTION_PREFIX . 'articlevault_article_price',
			array(
				'type'              => 'string',
				'default'           => Constants::DEFAULT_PRICE,
				'sanitize_callback' => array( $this, 'sanitize_price' ),
			)
		);

		register_setting(
			Constants::OPTION_GROUP,
			Constants::OPTION_PREFIX . 'stripe_mode',
			array(
				'type'              => 'string',
				'default'           => Constants::DEFAULT_STRIPE_MODE,
				'sanitize_callback' => array( $this, 'sanitize_stripe_mode' ),
			)
		);

		register_setting(
			Constants::OPTION_GROUP,
			Constants::OPTION_PREFIX . 'stripe_test_publishable_key',
			array(
				'type'              => 'string',
				'sanitize_callback' => 'sanitize_text_field',
			)
		);

		register_setting(
			Constants::OPTION_GROUP,
			Constants::OPTION_PREFIX . 'stripe_test_secret_key',
			array(
				'type'              => 'string',
				'sanitize_callback' => 'sanitize_text_field',
			)
		);

		register_setting(
			Constants::OPTION_GROUP,
			Constants::OPTION_PREFIX . 'stripe_live_publishable_key',
			array(
				'type'              => 'string',
				'sanitize_callback' => 'sanitize_text_field',
			)
		);

		register_setting(
			Constants::OPTION_GROUP,
			Constants::OPTION_PREFIX . 'stripe_live_secret_key',
			array(
				'type'              => 'string',
				'sanitize_callback' => 'sanitize_text_field',
			)
		);

		register_setting(
			Constants::OPTION_GROUP,
			Constants::OPTION_PREFIX . 'stripe_webhook_secret',
			array(
				'type'              => 'string',
				'sanitize_callback' => 'sanitize_text_field',
			)
		);

		add_settings_section(
			'articlevault_general',
			'General Settings',
			array( $this, 'render_general_section' ),
			Constants::SETTINGS_PAGE_SLUG
		);

		add_settings_field(
			Constants::OPTION_PREFIX . 'articlevault_enabled',
			'Enable ArticleVault',
			array( $this, 'render_enabled_field' ),
			Constants::SETTINGS_PAGE_SLUG,
			'articlevault_general'
		);

		add_settings_field(
			Constants::OPTION_PREFIX . 'articlevault_article_price',
			'Default Article Price (USD)',
			array( $this, 'render_price_field' ),
			Constants::SETTINGS_PAGE_SLUG,
			'articlevault_general'
		);

		add_settings_section(
			'articlevault_stripe',
			'Stripe Settings',
			array( $this, 'render_stripe_section' ),
			Constants::SETTINGS_PAGE_SLUG
		);

		add_settings_field(
			Constants::OPTION_PREFIX . 'stripe_mode',
			'Stripe Mode',
			array( $this, 'render_stripe_mode_field' ),
			Constants::SETTINGS_PAGE_SLUG,
			'articlevault_stripe'
		);

		add_settings_field(
			Constants::OPTION_PREFIX . 'stripe_test_publishable_key',
			'Test Publishable Key',
			array( $this, 'render_test_publishable_key_field' ),
			Constants::SETTINGS_PAGE_SLUG,
			'articlevault_stripe'
		);

		add_settings_field(
			Constants::OPTION_PREFIX . 'stripe_test_secret_key',
			'Test Secret Key',
			array( $this, 'render_test_secret_key_field' ),
			Constants::SETTINGS_PAGE_SLUG,
			'articlevault_stripe'
		);

		add_settings_field(
			Constants::OPTION_PREFIX . 'stripe_live_publishable_key',
			'Live Publishable Key',
			array( $this, 'render_live_publishable_key_field' ),
			Constants::SETTINGS_PAGE_SLUG,
			'articlevault_stripe'
		);

		add_settings_field(
			Constants::OPTION_PREFIX . 'stripe_live_secret_key',
			'Live Secret Key',
			array( $this, 'render_live_secret_key_field' ),
			Constants::SETTINGS_PAGE_SLUG,
			'articlevault_stripe'
		);

		add_settings_field(
			Constants::OPTION_PREFIX . 'stripe_webhook_secret',
			'Webhook Signing Secret',
			array( $this, 'render_webhook_secret_field' ),
			Constants::SETTINGS_PAGE_SLUG,
			'articlevault_stripe'
		);

	}

	public function is_enabled(): bool {

		return (bool) get_option(
			Constants::OPTION_PREFIX . 'articlevault_enabled',
			true
		);

	}

	public function get_default_price(): string {

		return get_option(
			Constants::OPTION_PREFIX . 'articlevault_article_price',
			Constants::DEFAULT_PRICE
		);

	}

	public function get_stripe_mode(): string {

		return get_option(
			Constants::OPTION_PREFIX . 'stripe_mode',
			Constants::DEFAULT_STRIPE_MODE
		);

	}

	public function get_stripe_publishable_key(): string {

		$mode = $this->get_stripe_mode();

		return get_option(
			Constants::OPTION_PREFIX . 'stripe_' . $mode . '_publishable_key',
			''
		);

	}

	public function get_stripe_secret_key(): string {

		$mode = $this->get_stripe_mode();

		return get_option(
			Constants::OPTION_PREFIX . 'stripe_' . $mode . '_secret_key',
			''
		);

	}

	public function get_stripe_webhook_secret(): string {

		return get_option(
			Constants::OPTION_PREFIX . 'stripe_webhook_secret',
			''
		);

	}

	public function render_general_section(): void {

		echo '<p>Configure the core settings for ArticleVault Pro.</p>';

	}

	public function render_stripe_section(): void {

		echo '<p>Connect Stripe Checkout to process premium article purchases.</p>';

	}

	public function render_enabled_field(): void {

		$value = $this->is_enabled();

		?>

		<input
			type="checkbox"
			name="<?php echo esc_attr( Constants::OPTION_PREFIX . 'articlevault_enabled' ); ?>"
			value="1"
			<?php checked( $value, true ); ?>
		>

		<label>Enable ArticleVault</label>

		<?php

	}

	public function render_price_field(): void {

		$value = $this->get_default_price();

		?>

		<input
			type="number"
			step="0.01"
			min="0"
			name="<?php echo esc_attr( Constants::OPTION_PREFIX . 'articlevault_article_price' ); ?>"
			value="<?php echo esc_attr( $value ); ?>"
			class="small-text"
		>

		<?php

	}

	public function render_stripe_mode_field(): void {

		$value = $this->get_stripe_mode();

		?>

		<select name="<?php echo esc_attr( Constants::OPTION_PREFIX . 'stripe_mode' ); ?>">
			<option value="test" <?php selected( $value, 'test' ); ?>>Test Mode</option>
			<option value="live" <?php selected( $value, 'live' ); ?>>Live Mode</option>
		</select>

		<?php

	}

	public function render_test_publishable_key_field(): void {

		$this->render_text_input( 'stripe_test_publishable_key' );

	}

	public function render_test_secret_key_field(): void {

		$this->render_password_input( 'stripe_test_secret_key' );

	}

	public function render_live_publishable_key_field(): void {

		$this->render_text_input( 'stripe_live_publishable_key' );

	}

	public function render_live_secret_key_field(): void {

		$this->render_password_input( 'stripe_live_secret_key' );

	}

	public function render_webhook_secret_field(): void {

		$this->render_password_input( 'stripe_webhook_secret' );

		echo '<p class="description">Stripe webhook endpoint: <code>' . esc_html( home_url( '/?articlevault_stripe_webhook=1' ) ) . '</code></p>';

	}

	private function render_text_input( string $option_key ): void {

		$name  = Constants::OPTION_PREFIX . $option_key;
		$value = get_option( $name, '' );

		?>

		<input
			type="text"
			name="<?php echo esc_attr( $name ); ?>"
			value="<?php echo esc_attr( $value ); ?>"
			class="regular-text"
		>

		<?php

	}

	private function render_password_input( string $option_key ): void {

		$name  = Constants::OPTION_PREFIX . $option_key;
		$value = get_option( $name, '' );

		?>

		<input
			type="password"
			name="<?php echo esc_attr( $name ); ?>"
			value="<?php echo esc_attr( $value ); ?>"
			class="regular-text"
			autocomplete="off"
		>

		<?php

	}

	public function sanitize_checkbox( $value ): bool {

		return (bool) $value;

	}

	public function sanitize_price( $value ): string {

		return number_format(
			max( 0, (float) $value ),
			2,
			'.',
			''
		);

	}

	public function sanitize_stripe_mode( string $value ): string {

		return in_array( $value, array( 'test', 'live' ), true ) ? $value : Constants::DEFAULT_STRIPE_MODE;

	}

}