<?php
/**
 * Pro admin: settings, conversations and analytics screens.
 *
 * @package AviSupportAssistantPro
 */

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

/**
 * Pro settings tabs.
 *
 * @return array
 */
function avcap_tabs() {
	return array(
		'license' => __( 'Licence', 'avi-support-assistant-pro' ),
		'ai'      => __( 'AI Answers', 'avi-support-assistant-pro' ),
		'voice'   => __( 'Voice', 'avi-support-assistant-pro' ),
		'crm'     => __( 'Zoho CRM & Webhook', 'avi-support-assistant-pro' ),
		'woo'     => __( 'WooCommerce', 'avi-support-assistant-pro' ),
		'hours'   => __( 'Office Hours', 'avi-support-assistant-pro' ),
		'more'    => __( 'Languages & History', 'avi-support-assistant-pro' ),
	);
}

/**
 * Register Pro admin pages.
 */
function avcap_admin_menu() {
	if ( function_exists( 'avca_pro_active' ) && avca_pro_active() ) {
		add_submenu_page( AVCA_MENU_SLUG, __( 'AI & Pro Features', 'avi-support-assistant' ), __( 'AI & Pro Features', 'avi-support-assistant' ), 'manage_options', 'avcap-settings', 'avcap_render_settings_page' );
		add_submenu_page( AVCA_MENU_SLUG, __( 'Conversations', 'avi-support-assistant' ), __( 'Conversations', 'avi-support-assistant' ), 'manage_options', 'avcap-conversations', 'avcap_render_conversations_page' );
		add_submenu_page( AVCA_MENU_SLUG, __( 'Analytics', 'avi-support-assistant' ), __( 'Analytics', 'avi-support-assistant' ), 'manage_options', 'avcap-analytics', 'avcap_render_analytics_page' );
	}
}
add_action( 'admin_menu', 'avcap_admin_menu', 20 );

/**
 * Register the Pro settings.
 */
function avcap_register_settings() {
	register_setting(
		'avcap_settings_group',
		AVCAP_OPTION,
		array(
			'type'              => 'array',
			'sanitize_callback' => 'avcap_sanitize_settings',
			'default'           => avcap_get_defaults(),
		)
	);

	foreach ( avcap_tabs() as $tab => $label ) {
		add_settings_section( 'avcap_section_' . $tab, '', '__return_false', 'avcap-tab-' . $tab );
	}

	$fields = array(
		'license'         => array( 'license', __( 'Licence Status', 'avi-support-assistant-pro' ) ),
		'ai_enabled'      => array( 'ai', __( 'AI Answers', 'avi-support-assistant-pro' ) ),
		'ai_provider'     => array( 'ai', __( 'Provider', 'avi-support-assistant-pro' ) ),
		'ai_keys'         => array( 'ai', __( 'API Keys & Models', 'avi-support-assistant-pro' ) ),
		'ai_instructions' => array( 'ai', __( 'Instructions', 'avi-support-assistant-pro' ) ),
		'ai_knowledge'    => array( 'ai', __( 'Knowledge', 'avi-support-assistant-pro' ) ),
		'ai_temperature'  => array( 'ai', __( 'Creativity', 'avi-support-assistant-pro' ) ),
		'ai_max_tokens'   => array( 'ai', __( 'Max Answer Length', 'avi-support-assistant-pro' ) ),
		'ai_monthly_cap'  => array( 'ai', __( 'Monthly AI Limit', 'avi-support-assistant-pro' ) ),
		'ai_visitor_cap'  => array( 'ai', __( 'Per-Visitor Limit', 'avi-support-assistant-pro' ) ),
		'voice_input'     => array( 'voice', __( 'Voice Input', 'avi-support-assistant-pro' ) ),
		'voice_output'    => array( 'voice', __( 'Spoken Replies', 'avi-support-assistant-pro' ) ),
		'zoho_enabled'    => array( 'crm', __( 'Zoho CRM', 'avi-support-assistant-pro' ) ),
		'zoho_dc'         => array( 'crm', __( 'Data Centre', 'avi-support-assistant-pro' ) ),
		'zoho_client_id'  => array( 'crm', __( 'Client ID', 'avi-support-assistant-pro' ) ),
		'zoho_secret'     => array( 'crm', __( 'Client Secret', 'avi-support-assistant-pro' ) ),
		'zoho_refresh'    => array( 'crm', __( 'Refresh Token', 'avi-support-assistant-pro' ) ),
		'zoho_source'     => array( 'crm', __( 'Lead Source', 'avi-support-assistant-pro' ) ),
		'webhook_url'     => array( 'crm', __( 'Webhook URL', 'avi-support-assistant-pro' ) ),
		'webhook_secret'  => array( 'crm', __( 'Webhook Secret', 'avi-support-assistant-pro' ) ),
		'woo_products'    => array( 'woo', __( 'Product Search', 'avi-support-assistant-pro' ) ),
		'woo_auto'        => array( 'woo', __( 'Automatic Suggestions', 'avi-support-assistant-pro' ) ),
		'woo_orders'      => array( 'woo', __( 'Order Tracking', 'avi-support-assistant-pro' ) ),
		'hours_enabled'   => array( 'hours', __( 'Office Hours', 'avi-support-assistant-pro' ) ),
		'hours'           => array( 'hours', __( 'Opening Times', 'avi-support-assistant-pro' ) ),
		'closed_message'  => array( 'hours', __( 'Closed Message', 'avi-support-assistant-pro' ) ),
		'closed_hide'     => array( 'hours', __( 'When Closed', 'avi-support-assistant-pro' ) ),
		'translate'       => array( 'more', __( 'Multi-Language', 'avi-support-assistant-pro' ) ),
		'history_enabled' => array( 'more', __( 'Chat History', 'avi-support-assistant-pro' ) ),
		'retention_days'  => array( 'more', __( 'Keep History For', 'avi-support-assistant-pro' ) ),
	);

	foreach ( $fields as $key => $field ) {
		add_settings_field(
			'avcap_' . $key,
			$field[1],
			'avcap_render_field',
			'avcap-tab-' . $field[0],
			'avcap_section_' . $field[0],
			array(
				'key'       => $key,
				'label_for' => 'avcap_' . $key,
			)
		);
	}
}
add_action( 'admin_init', 'avcap_register_settings' );

/**
 * Name attribute for a Pro setting.
 *
 * @param string $key Key.
 * @return string
 */
function avcap_name( $key ) {
	return AVCAP_OPTION . '[' . $key . ']';
}

/**
 * Checkbox.
 *
 * @param string $key   Key.
 * @param string $label Label.
 */
function avcap_checkbox( $key, $label ) {
	?>
	<label class="avcap-check" for="<?php echo esc_attr( 'avcap_' . $key ); ?>">
		<input type="checkbox" id="<?php echo esc_attr( 'avcap_' . $key ); ?>" name="<?php echo esc_attr( avcap_name( $key ) ); ?>" value="1" <?php checked( 1, (int) avcap_get( $key ) ); ?> />
		<?php echo esc_html( $label ); ?>
	</label>
	<?php
}

/**
 * Text-like input.
 *
 * @param string $key   Key.
 * @param string $type  Type.
 * @param array  $attrs Attributes.
 */
function avcap_input( $key, $type = 'text', $attrs = array() ) {
	$class = 'number' === $type ? 'small-text' : 'regular-text';
	?>
	<input type="<?php echo esc_attr( $type ); ?>" id="<?php echo esc_attr( 'avcap_' . $key ); ?>" class="<?php echo esc_attr( $class ); ?>" name="<?php echo esc_attr( avcap_name( $key ) ); ?>" value="<?php echo esc_attr( avcap_get( $key ) ); ?>"
		<?php
		foreach ( $attrs as $attr => $value ) {
			echo ' ' . esc_attr( $attr ) . '="' . esc_attr( $value ) . '"';
		}
		?>
	/>
	<?php
}

/**
 * Secret input: never prints the saved value.
 *
 * @param string $key  Key.
 * @param string $id   Element ID.
 * @param string $name Name attribute.
 */
function avcap_secret( $key, $id = '', $name = '' ) {
	$saved = '' !== (string) avcap_get( $key );
	?>
	<input type="password" id="<?php echo esc_attr( $id ? $id : 'avcap_' . $key ); ?>" class="regular-text avcap-secret" name="<?php echo esc_attr( $name ? $name : avcap_name( $key ) ); ?>" value="" autocomplete="new-password" placeholder="<?php echo esc_attr( $saved ? __( 'Saved (leave blank to keep)', 'avi-support-assistant-pro' ) : '' ); ?>" />
	<?php
}

/**
 * Help line.
 *
 * @param string $text Text.
 */
function avcap_help( $text ) {
	echo '<p class="description">' . esc_html( $text ) . '</p>';
}

/**
 * Render a Pro field.
 *
 * @param array $args Args with key.
 */
function avcap_render_field( $args ) {
	$key = $args['key'];
	$s   = avcap_get_settings();

	switch ( $key ) {
		case 'license':
			avcap_render_license_status();
			break;

		case 'ai_enabled':
			avcap_checkbox( $key, __( 'Answer questions with AI when no FAQ matches', 'avi-support-assistant-pro' ) );
			avcap_help( __( 'Order of answers: your FAQs first (free), then AI, then site search and the lead form if AI cannot help.', 'avi-support-assistant-pro' ) );
			break;

		case 'ai_provider':
			?>
			<select id="avcap_ai_provider" name="<?php echo esc_attr( avcap_name( 'ai_provider' ) ); ?>">
				<?php foreach ( avcap_ai_providers() as $provider => $info ) : ?>
					<option value="<?php echo esc_attr( $provider ); ?>" <?php selected( $s['ai_provider'], $provider ); ?>><?php echo esc_html( $info['label'] ); ?></option>
				<?php endforeach; ?>
			</select>
			<?php
			avcap_help( __( 'Your API key is stored on this site only and never sent to visitors\' browsers. The provider bills you directly for usage.', 'avi-support-assistant-pro' ) );
			break;

		case 'ai_keys':
			avcap_render_ai_keys();
			break;

		case 'ai_instructions':
			?>
			<textarea id="avcap_ai_instructions" class="large-text" rows="4" name="<?php echo esc_attr( avcap_name( 'ai_instructions' ) ); ?>"><?php echo esc_textarea( $s['ai_instructions'] ); ?></textarea>
			<?php
			avcap_help( __( 'Tell the AI how to behave: tone, what to talk about, what to avoid.', 'avi-support-assistant-pro' ) );
			break;

		case 'ai_knowledge':
			avcap_checkbox( 'ai_use_faqs', __( 'Use my questions and answers', 'avi-support-assistant-pro' ) );
			echo '<br />';
			avcap_checkbox( 'ai_use_content', __( 'Use matching pages from my site (same content types as site search)', 'avi-support-assistant-pro' ) );
			echo '<br />';
			avcap_checkbox( 'ai_match_lang', __( 'Reply in the visitor\'s language', 'avi-support-assistant-pro' ) );
			echo '<br />';
			avcap_checkbox( 'ai_badge', __( 'Show an "AI answer" label under AI replies', 'avi-support-assistant-pro' ) );
			break;

		case 'ai_temperature':
			avcap_input( $key, 'number', array( 'min' => '0', 'max' => '1', 'step' => '0.1' ) );
			avcap_help( __( '0 = precise and consistent, 1 = more creative. 0.3 suits support chat. Some OpenAI models ignore this.', 'avi-support-assistant-pro' ) );
			break;

		case 'ai_max_tokens':
			avcap_input( $key, 'number', array( 'min' => '50', 'max' => '2000' ) );
			echo ' ' . esc_html__( 'tokens', 'avi-support-assistant-pro' );
			avcap_help( __( 'About 400 tokens ≈ 300 words. Lower values cost less.', 'avi-support-assistant-pro' ) );
			break;

		case 'ai_monthly_cap':
			avcap_input( $key, 'number', array( 'min' => '0' ) );
			echo ' ' . esc_html__( 'AI replies per month', 'avi-support-assistant-pro' );
			/* translators: %s: Number of AI replies used this month. */
			avcap_help( sprintf( __( 'Protects you from unexpected API bills. 0 = no limit. Used this month: %s.', 'avi-support-assistant-pro' ), number_format_i18n( avcap_ai_usage() ) ) );
			$error = get_option( 'avcap_last_ai_error' );
			if ( is_array( $error ) && ! empty( $error['message'] ) ) {
				echo '<p class="avcap-last-error">';
				/* translators: 1: Time ago, 2: Error message. */
				echo esc_html( sprintf( __( 'Last AI error (%1$s ago): %2$s', 'avi-support-assistant-pro' ), human_time_diff( (int) $error['time'] ), $error['message'] ) );
				echo '</p>';
			}
			break;

		case 'ai_visitor_cap':
			avcap_input( $key, 'number', array( 'min' => '1', 'max' => '500' ) );
			echo ' ' . esc_html__( 'AI replies per visitor per hour', 'avi-support-assistant-pro' );
			break;

		case 'voice_input':
			avcap_checkbox( $key, __( 'Show a microphone button so visitors can speak their question', 'avi-support-assistant-pro' ) );
			avcap_help( __( 'Uses the browser\'s built-in speech recognition (Chrome, Edge, Safari). The button is hidden in browsers that do not support it.', 'avi-support-assistant-pro' ) );
			break;

		case 'voice_output':
			$options = array(
				'off'         => __( 'Off', 'avi-support-assistant-pro' ),
				'after_voice' => __( 'Speak replies when the visitor used the microphone', 'avi-support-assistant-pro' ),
				'always'      => __( 'Always speak replies', 'avi-support-assistant-pro' ),
			);
			?>
			<select id="avcap_voice_output" name="<?php echo esc_attr( avcap_name( 'voice_output' ) ); ?>">
				<?php foreach ( $options as $value => $label ) : ?>
					<option value="<?php echo esc_attr( $value ); ?>" <?php selected( $s['voice_output'], $value ); ?>><?php echo esc_html( $label ); ?></option>
				<?php endforeach; ?>
			</select>
			<?php
			avcap_help( __( 'Visitors can mute spoken replies with the speaker button in the chat header. The voice language follows your site language.', 'avi-support-assistant-pro' ) );
			break;

		case 'zoho_enabled':
			avcap_checkbox( $key, __( 'Send every chat lead and callback request to Zoho CRM as a Lead', 'avi-support-assistant-pro' ) );
			avcap_help( __( 'Setup: open api-console.zoho.com (use your data centre domain), add a Self Client, generate a code with scope ZohoCRM.modules.leads.CREATE, exchange it for a refresh token, and paste the values below.', 'avi-support-assistant-pro' ) );
			break;

		case 'zoho_dc':
			?>
			<select id="avcap_zoho_dc" name="<?php echo esc_attr( avcap_name( 'zoho_dc' ) ); ?>">
				<?php foreach ( avcap_zoho_data_centres() as $dc => $label ) : ?>
					<option value="<?php echo esc_attr( $dc ); ?>" <?php selected( $s['zoho_dc'], $dc ); ?>><?php echo esc_html( $label ); ?></option>
				<?php endforeach; ?>
			</select>
			<?php
			break;

		case 'zoho_client_id':
			avcap_input( $key );
			break;

		case 'zoho_secret':
			avcap_secret( $key );
			break;

		case 'zoho_refresh':
			avcap_secret( $key );
			?>
			<p>
				<button type="button" class="button" id="avcap-test-zoho" data-nonce="<?php echo esc_attr( wp_create_nonce( 'avcap_test_zoho' ) ); ?>"><?php esc_html_e( 'Test Zoho Connection', 'avi-support-assistant-pro' ); ?></button>
				<span class="avcap-test-result" aria-live="polite"></span>
			</p>
			<?php
			avcap_help( __( 'Save your settings before testing.', 'avi-support-assistant-pro' ) );
			break;

		case 'zoho_source':
			avcap_input( $key );
			avcap_help( __( 'Value for the Lead Source field. It must exist in your Zoho Lead Source picklist, or leave empty.', 'avi-support-assistant-pro' ) );
			break;

		case 'webhook_url':
			avcap_input( $key, 'url', array( 'placeholder' => 'https://hooks.zapier.com/…' ) );
			avcap_help( __( 'Optional. Each new lead is sent here as JSON (works with Zapier, Make, n8n, HubSpot workflows and custom CRMs).', 'avi-support-assistant-pro' ) );
			break;

		case 'webhook_secret':
			avcap_secret( $key );
			avcap_help( __( 'Optional. When set, requests include an X-Avi-Signature header (HMAC-SHA256 of the body) so your endpoint can verify them.', 'avi-support-assistant-pro' ) );
			break;

		case 'woo_products':
			avcap_checkbox( $key, __( 'Add a "Find a product" button that searches your products', 'avi-support-assistant-pro' ) );
			if ( ! avcap_woo_active() ) {
				avcap_help( __( 'WooCommerce is not active, so these options have no effect.', 'avi-support-assistant-pro' ) );
			}
			break;

		case 'woo_auto':
			avcap_checkbox( $key, __( 'Also suggest matching products when no FAQ matches (before AI)', 'avi-support-assistant-pro' ) );
			break;

		case 'woo_orders':
			avcap_checkbox( $key, __( 'Add a "Track my order" button (order number + billing email)', 'avi-support-assistant-pro' ) );
			break;

		case 'hours_enabled':
			avcap_checkbox( $key, __( 'Show a different welcome message outside opening hours', 'avi-support-assistant-pro' ) );
			/* translators: %s: Site timezone. */
			avcap_help( sprintf( __( 'Uses your site timezone (%s) from Settings → General.', 'avi-support-assistant-pro' ), wp_timezone_string() ) );
			break;

		case 'hours':
			avcap_render_hours();
			break;

		case 'closed_message':
			?>
			<textarea id="avcap_closed_message" class="large-text" rows="3" name="<?php echo esc_attr( avcap_name( 'closed_message' ) ); ?>"><?php echo esc_textarea( $s['closed_message'] ); ?></textarea>
			<?php
			break;

		case 'closed_hide':
			avcap_checkbox( $key, __( 'Hide the Call and WhatsApp buttons while closed', 'avi-support-assistant-pro' ) );
			break;

		case 'translate':
			avcap_checkbox( $key, __( 'Let WPML or Polylang translate the bot texts and questions & answers', 'avi-support-assistant-pro' ) );
			if ( function_exists( 'pll_register_string' ) ) {
				avcap_help( __( 'Polylang detected: translate under Languages → Translations, group "Avi Support Assistant".', 'avi-support-assistant-pro' ) );
			} elseif ( defined( 'ICL_SITEPRESS_VERSION' ) ) {
				avcap_help( __( 'WPML detected: translate under WPML → String Translation, domain "Avi Support Assistant".', 'avi-support-assistant-pro' ) );
			} else {
				avcap_help( __( 'No translation plugin detected. AI answers can still reply in the visitor\'s language.', 'avi-support-assistant-pro' ) );
			}
			break;

		case 'history_enabled':
			avcap_checkbox( $key, __( 'Save chat conversations (anonymous: no names or IP addresses)', 'avi-support-assistant-pro' ) );
			avcap_help( __( 'Only conversations where the visitor sent a message are saved. Mention this in your privacy policy.', 'avi-support-assistant-pro' ) );
			break;

		case 'retention_days':
			avcap_input( $key, 'number', array( 'min' => '1', 'max' => '3650' ) );
			echo ' ' . esc_html__( 'days, then delete automatically', 'avi-support-assistant-pro' );
			break;
	}
}

/**
 * Licence status and key form.
 *
 * The licence form posts to admin-post.php, separately from the settings form, so it
 * is printed after the settings form (see avcap_render_settings_page()).
 */
function avcap_render_license_status() {
	$l = avcap_license();

	if ( defined( 'AVCAP_DEV_LICENSE' ) && AVCAP_DEV_LICENSE ) {
		echo '<p class="avcap-status is-ok"><span class="dashicons dashicons-yes-alt" aria-hidden="true"></span> ' . esc_html__( 'Developer mode – all Pro features are on.', 'avi-support-assistant-pro' ) . '</p>';
		avcap_help( __( 'AVCAP_DEV_LICENSE is set in wp-config.php. Remove it on customer sites.', 'avi-support-assistant-pro' ) );
		return;
	}

	$labels = array(
		'active'   => __( 'Active – all Pro features are on.', 'avi-support-assistant-pro' ),
		'expired'  => __( 'Expired – renew your licence to turn Pro features back on.', 'avi-support-assistant-pro' ),
		'disabled' => __( 'Disabled – please contact support.', 'avi-support-assistant-pro' ),
		'inactive' => __( 'This site was removed from your licence. Activate it again.', 'avi-support-assistant-pro' ),
		'invalid'  => __( 'This licence key is not valid.', 'avi-support-assistant-pro' ),
		'none'     => __( 'Not activated – enter your licence key below.', 'avi-support-assistant-pro' ),
	);
	$status = isset( $labels[ $l['status'] ] ) ? $l['status'] : 'none';
	$ok     = avcap_is_licensed();

	echo '<p class="avcap-status ' . ( $ok ? 'is-ok' : 'is-off' ) . '"><span class="dashicons ' . ( $ok ? 'dashicons-yes-alt' : 'dashicons-warning' ) . '" aria-hidden="true"></span> ' . esc_html( $labels[ $status ] ) . '</p>';

	if ( '' !== $l['key'] ) {
		echo '<p>';
		echo esc_html( __( 'Key:', 'avi-support-assistant-pro' ) . ' ' . substr( $l['key'], 0, 9 ) . '••••-••••-' . substr( $l['key'], -4 ) );
		if ( '' !== $l['plan'] ) {
			echo '<br />' . esc_html( __( 'Plan:', 'avi-support-assistant-pro' ) . ' ' . $l['plan'] . ' · ' . sprintf( /* translators: 1: Sites used, 2: Sites allowed. */ __( '%1$d of %2$d sites', 'avi-support-assistant-pro' ), $l['used'], $l['sites'] ) );
		}
		echo '<br />' . esc_html( __( 'Valid until:', 'avi-support-assistant-pro' ) . ' ' . ( $l['expires'] ? wp_date( get_option( 'date_format' ), $l['expires'] ) : __( 'Lifetime', 'avi-support-assistant-pro' ) ) );
		echo '</p>';

		if ( '' !== $l['renew_url'] && 'active' !== $l['status'] ) {
			echo '<p><a class="button button-primary" href="' . esc_url( $l['renew_url'] ) . '" target="_blank" rel="noopener noreferrer">' . esc_html__( 'Renew licence', 'avi-support-assistant-pro' ) . '</a></p>';
		}
	}

	avcap_help( __( 'Use the licence form below this settings form to activate, refresh or deactivate.', 'avi-support-assistant-pro' ) );
}

/**
 * Licence key form (outside the settings form).
 */
function avcap_render_license_form() {
	if ( defined( 'AVCAP_DEV_LICENSE' ) && AVCAP_DEV_LICENSE ) {
		return;
	}

	$l     = avcap_license();
	$error = get_transient( 'avcap_license_error_' . get_current_user_id() );
	$flag  = isset( $_GET['avcap_license'] ) ? sanitize_key( wp_unslash( $_GET['avcap_license'] ) ) : ''; // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Display-only flag.

	if ( $error ) {
		delete_transient( 'avcap_license_error_' . get_current_user_id() );
	}
	?>
	<div class="avcap-license-box" id="avcap-license-form">
		<h2><?php esc_html_e( 'Licence key', 'avi-support-assistant-pro' ); ?></h2>

		<?php if ( 'error' === $flag && $error ) : ?>
			<div class="notice notice-error inline"><p><?php echo esc_html( $error ); ?></p></div>
		<?php elseif ( 'activate' === $flag ) : ?>
			<div class="notice notice-success inline"><p><?php esc_html_e( 'Licence activated. Pro features are now on.', 'avi-support-assistant-pro' ); ?></p></div>
		<?php elseif ( 'deactivate' === $flag ) : ?>
			<div class="notice notice-success inline"><p><?php esc_html_e( 'Licence deactivated on this site.', 'avi-support-assistant-pro' ); ?></p></div>
		<?php endif; ?>

		<form method="post" action="<?php echo esc_url( admin_url( 'admin-post.php' ) ); ?>">
			<input type="hidden" name="action" value="avcap_license" />
			<?php wp_nonce_field( 'avcap_license' ); ?>
			<?php if ( '' === $l['key'] || in_array( $l['status'], array( 'invalid', 'inactive' ), true ) ) : ?>
				<label class="screen-reader-text" for="avcap-license-key"><?php esc_html_e( 'Licence key', 'avi-support-assistant-pro' ); ?></label>
				<input type="text" id="avcap-license-key" name="license_key" class="regular-text code" placeholder="AVI-XXXX-XXXX-XXXX-XXXX" value="<?php echo esc_attr( $l['key'] ); ?>" autocomplete="off" />
				<button type="submit" name="do" value="activate" class="button button-primary"><?php esc_html_e( 'Activate', 'avi-support-assistant-pro' ); ?></button>
				<p class="description">
					<?php esc_html_e( 'Your key is in the email you received after buying Pro.', 'avi-support-assistant-pro' ); ?>
					<a href="<?php echo esc_url( defined( 'AVCA_PRO_URL' ) ? AVCA_PRO_URL : 'https://apps.avinyainfotech.com/avi-support-assistant-pro/' ); ?>" target="_blank" rel="noopener noreferrer"><?php esc_html_e( 'Buy a licence', 'avi-support-assistant-pro' ); ?></a>
				</p>
			<?php else : ?>
				<button type="submit" name="do" value="refresh" class="button"><?php esc_html_e( 'Refresh status', 'avi-support-assistant-pro' ); ?></button>
				<button type="submit" name="do" value="deactivate" class="button button-link-delete"><?php esc_html_e( 'Deactivate on this site', 'avi-support-assistant-pro' ); ?></button>
				<p class="description"><?php esc_html_e( 'Deactivate before moving Pro to another website, so the licence slot is freed.', 'avi-support-assistant-pro' ); ?></p>
			<?php endif; ?>
		</form>
	</div>
	<?php
}

/**
 * Provider keys and models table.
 */
function avcap_render_ai_keys() {
	$s     = avcap_get_settings();
	$nonce = wp_create_nonce( 'avcap_test_ai' );
	?>
	<table class="widefat striped avcap-keys">
		<thead>
			<tr>
				<th><?php esc_html_e( 'Provider', 'avi-support-assistant-pro' ); ?></th>
				<th><?php esc_html_e( 'API Key', 'avi-support-assistant-pro' ); ?></th>
				<th><?php esc_html_e( 'Model', 'avi-support-assistant-pro' ); ?></th>
				<th><span class="screen-reader-text"><?php esc_html_e( 'Test', 'avi-support-assistant-pro' ); ?></span></th>
			</tr>
		</thead>
		<tbody>
			<?php foreach ( avcap_ai_providers() as $provider => $info ) : ?>
				<tr data-provider="<?php echo esc_attr( $provider ); ?>">
					<td>
						<strong><?php echo esc_html( $info['label'] ); ?></strong><br />
						<a href="<?php echo esc_url( $info['key_url'] ); ?>" target="_blank" rel="noopener noreferrer"><?php esc_html_e( 'Get a key', 'avi-support-assistant-pro' ); ?></a>
						<?php if ( '' !== $s[ 'key_' . $provider ] ) : ?>
							<span class="avcap-saved"><?php esc_html_e( 'Key saved', 'avi-support-assistant-pro' ); ?></span>
						<?php endif; ?>
					</td>
					<td>
						<label class="screen-reader-text" for="<?php echo esc_attr( 'avcap_key_' . $provider ); ?>"><?php echo esc_html( $info['label'] . ' ' . __( 'API key', 'avi-support-assistant-pro' ) ); ?></label>
						<?php avcap_secret( 'key_' . $provider ); ?>
					</td>
					<td>
						<label class="screen-reader-text" for="<?php echo esc_attr( 'avcap_model_' . $provider ); ?>"><?php echo esc_html( $info['label'] . ' ' . __( 'model', 'avi-support-assistant-pro' ) ); ?></label>
						<?php avcap_input( 'model_' . $provider, 'text', array( 'placeholder' => $info['model'] ) ); ?>
					</td>
					<td>
						<button type="button" class="button avcap-test-ai" data-nonce="<?php echo esc_attr( $nonce ); ?>"><?php esc_html_e( 'Test', 'avi-support-assistant-pro' ); ?></button>
						<span class="avcap-test-result" aria-live="polite"></span>
					</td>
				</tr>
			<?php endforeach; ?>
		</tbody>
	</table>
	<?php
	avcap_help( __( 'Saved keys are never shown again. To remove a saved key, type a single - and save. Model names change over time: check your provider\'s model list, paste the exact model ID and use Test to confirm it works.', 'avi-support-assistant-pro' ) );
}

/**
 * Opening hours table.
 */
function avcap_render_hours() {
	global $wp_locale;

	$hours = avcap_get( 'hours' );
	?>
	<table class="avcap-hours" id="avcap_hours">
		<?php for ( $day = 0; $day <= 6; $day++ ) : ?>
			<?php
			$row  = isset( $hours[ $day ] ) ? $hours[ $day ] : array(
				'open' => 0,
				'from' => '09:30',
				'to'   => '18:30',
			);
			$base = AVCAP_OPTION . '[hours][' . $day . ']';
			?>
			<tr>
				<th scope="row"><?php echo esc_html( $wp_locale ? $wp_locale->get_weekday( $day ) : (string) $day ); ?></th>
				<td>
					<label>
						<input type="checkbox" name="<?php echo esc_attr( $base . '[open]' ); ?>" value="1" <?php checked( 1, (int) $row['open'] ); ?> />
						<?php esc_html_e( 'Open', 'avi-support-assistant-pro' ); ?>
					</label>
				</td>
				<td>
					<input type="time" name="<?php echo esc_attr( $base . '[from]' ); ?>" value="<?php echo esc_attr( $row['from'] ); ?>" aria-label="<?php esc_attr_e( 'Opens at', 'avi-support-assistant-pro' ); ?>" />
					–
					<input type="time" name="<?php echo esc_attr( $base . '[to]' ); ?>" value="<?php echo esc_attr( $row['to'] ); ?>" aria-label="<?php esc_attr_e( 'Closes at', 'avi-support-assistant-pro' ); ?>" />
				</td>
			</tr>
		<?php endfor; ?>
	</table>
	<?php
}

/**
 * Render the Pro settings page.
 */
function avcap_render_settings_page() {
	if ( ! current_user_can( 'manage_options' ) ) {
		return;
	}
	?>
	<div class="wrap avca-settings">
		<h1><?php esc_html_e( 'Avi Support Assistant Pro', 'avi-support-assistant-pro' ); ?></h1>
		<?php settings_errors( AVCAP_OPTION ); ?>

		<nav class="nav-tab-wrapper avca-tabs" aria-label="<?php esc_attr_e( 'Pro settings sections', 'avi-support-assistant-pro' ); ?>">
			<?php foreach ( avcap_tabs() as $tab => $label ) : ?>
				<a href="<?php echo esc_attr( '#' . $tab ); ?>" class="nav-tab" data-tab="<?php echo esc_attr( $tab ); ?>"><?php echo esc_html( $label ); ?></a>
			<?php endforeach; ?>
		</nav>

		<form action="options.php" method="post" autocomplete="off">
			<?php settings_fields( 'avcap_settings_group' ); ?>
			<?php foreach ( avcap_tabs() as $tab => $label ) : ?>
				<div class="avca-tab-panel" id="<?php echo esc_attr( 'avcap-tab-' . $tab ); ?>" data-tab="<?php echo esc_attr( $tab ); ?>">
					<h2 class="screen-reader-text"><?php echo esc_html( $label ); ?></h2>
					<?php do_settings_sections( 'avcap-tab-' . $tab ); ?>
				</div>
			<?php endforeach; ?>
			<?php submit_button(); ?>
		</form>

		<?php avcap_render_license_form(); ?>
	</div>
	<?php
}

/**
 * Notice on Pro screens when the licence is not active.
 */
function avcap_license_notice() {
	$screen = get_current_screen();

	if ( ! $screen || false === strpos( $screen->id, 'avcap-' ) || avcap_is_licensed() ) {
		return;
	}
	?>
	<div class="notice notice-warning">
		<p>
			<?php esc_html_e( 'Avi Support Assistant Pro is installed but not activated. Activate your licence to turn on AI answers, voice, CRM sync and the other Pro features.', 'avi-support-assistant-pro' ); ?>
			<a href="<?php echo esc_url( admin_url( 'admin.php?page=avinya_lic_avi-support-assistant' ) ); ?>"><?php esc_html_e( 'Activate', 'avi-support-assistant-pro' ); ?></a>
		</p>
	</div>
	<?php
}
add_action( 'admin_notices', 'avcap_license_notice' );

/**
 * Conversations screen.
 */
function avcap_render_conversations_page() {
	if ( ! current_user_can( 'manage_options' ) ) {
		return;
	}

	// phpcs:disable WordPress.Security.NonceVerification.Recommended -- Read-only navigation parameters.
	$session = isset( $_GET['session'] ) ? sanitize_key( wp_unslash( $_GET['session'] ) ) : '';
	$paged   = isset( $_GET['paged'] ) ? max( 1, absint( $_GET['paged'] ) ) : 1;
	$notice  = isset( $_GET['avcap_notice'] ) ? sanitize_key( wp_unslash( $_GET['avcap_notice'] ) ) : '';
	// phpcs:enable

	$base = admin_url( 'admin.php?page=avcap-conversations' );
	?>
	<div class="wrap avcap-conversations">
		<h1 class="wp-heading-inline"><?php esc_html_e( 'Conversations', 'avi-support-assistant-pro' ); ?></h1>

		<?php if ( 'deleted' === $notice ) : ?>
			<div class="notice notice-success is-dismissible"><p><?php esc_html_e( 'Conversation deleted.', 'avi-support-assistant-pro' ); ?></p></div>
		<?php endif; ?>

		<?php if ( '' !== $session ) : ?>
			<?php $messages = avcap_get_conversation( $session ); ?>
			<p><a href="<?php echo esc_url( $base ); ?>">&larr; <?php esc_html_e( 'All conversations', 'avi-support-assistant-pro' ); ?></a></p>

			<?php if ( empty( $messages ) ) : ?>
				<p><?php esc_html_e( 'This conversation was not found.', 'avi-support-assistant-pro' ); ?></p>
			<?php else : ?>
				<p class="description">
					<?php
					/* translators: %s: Page URL. */
					echo esc_html( sprintf( __( 'Started on: %s', 'avi-support-assistant-pro' ), $messages[0]['page'] ? $messages[0]['page'] : '—' ) );
					?>
				</p>
				<div class="avcap-transcript">
					<?php foreach ( $messages as $m ) : ?>
						<div class="avcap-line is-<?php echo esc_attr( 'user' === $m['role'] ? 'user' : 'bot' ); ?>">
							<div class="avcap-bubble"><?php echo nl2br( esc_html( $m['message'] ) ); ?></div>
							<div class="avcap-meta">
								<?php echo esc_html( get_date_from_gmt( $m['created'], get_option( 'date_format' ) . ' ' . get_option( 'time_format' ) ) ); ?>
								<?php if ( 'user' !== $m['role'] && '' !== $m['source'] ) : ?>
									· <?php echo esc_html( avcap_source_label( $m['source'] ) ); ?>
								<?php endif; ?>
							</div>
						</div>
					<?php endforeach; ?>
				</div>
				<form method="post" action="<?php echo esc_url( admin_url( 'admin-post.php' ) ); ?>">
					<input type="hidden" name="action" value="avcap_delete_conversation" />
					<input type="hidden" name="session" value="<?php echo esc_attr( $session ); ?>" />
					<?php wp_nonce_field( 'avcap_delete_conversation' ); ?>
					<?php submit_button( __( 'Delete Conversation', 'avi-support-assistant-pro' ), 'delete', 'submit', false ); ?>
				</form>
			<?php endif; ?>
		<?php else : ?>
			<?php
			$per_page = 20;
			$rows     = avcap_get_conversations( $paged, $per_page );
			$total    = avcap_count_conversations();
			$pages    = max( 1, (int) ceil( $total / $per_page ) );
			?>
			<form method="post" action="<?php echo esc_url( admin_url( 'admin-post.php' ) ); ?>" class="avcap-export">
				<input type="hidden" name="action" value="avcap_export" />
				<?php wp_nonce_field( 'avcap_export' ); ?>
				<label for="avcap-export-days"><?php esc_html_e( 'Export last', 'avi-support-assistant-pro' ); ?></label>
				<input type="number" id="avcap-export-days" name="days" value="30" min="1" max="3650" class="small-text" />
				<?php esc_html_e( 'days', 'avi-support-assistant-pro' ); ?>
				<?php submit_button( __( 'Download CSV', 'avi-support-assistant-pro' ), 'secondary', 'submit', false ); ?>
			</form>

			<?php if ( ! avcap_get( 'history_enabled' ) ) : ?>
				<div class="notice notice-info inline"><p><?php esc_html_e( 'Chat history is turned off in Pro Settings → Languages & History.', 'avi-support-assistant-pro' ); ?></p></div>
			<?php endif; ?>

			<?php if ( empty( $rows ) ) : ?>
				<p><em><?php esc_html_e( 'No conversations yet.', 'avi-support-assistant-pro' ); ?></em></p>
			<?php else : ?>
				<table class="widefat striped">
					<thead>
						<tr>
							<th><?php esc_html_e( 'First question', 'avi-support-assistant-pro' ); ?></th>
							<th><?php esc_html_e( 'Messages', 'avi-support-assistant-pro' ); ?></th>
							<th><?php esc_html_e( 'Last message', 'avi-support-assistant-pro' ); ?></th>
						</tr>
					</thead>
					<tbody>
						<?php foreach ( $rows as $row ) : ?>
							<tr>
								<td>
									<a href="<?php echo esc_url( add_query_arg( 'session', $row['session'], $base ) ); ?>">
										<?php echo esc_html( wp_trim_words( $row['first_question'] ? $row['first_question'] : __( '(no question)', 'avi-support-assistant-pro' ), 14 ) ); ?>
									</a>
								</td>
								<td><?php echo esc_html( number_format_i18n( (int) $row['messages'] ) ); ?></td>
								<td><?php echo esc_html( get_date_from_gmt( $row['last'], get_option( 'date_format' ) . ' ' . get_option( 'time_format' ) ) ); ?></td>
							</tr>
						<?php endforeach; ?>
					</tbody>
				</table>
				<?php if ( $pages > 1 ) : ?>
					<div class="tablenav"><div class="tablenav-pages">
						<?php
						echo wp_kses_post(
							paginate_links(
								array(
									'base'    => add_query_arg( 'paged', '%#%', $base ),
									'format'  => '',
									'current' => $paged,
									'total'   => $pages,
								)
							)
						);
						?>
					</div></div>
				<?php endif; ?>
			<?php endif; ?>
		<?php endif; ?>
	</div>
	<?php
}

/**
 * Human label for an answer source.
 *
 * @param string $source Source.
 * @return string
 */
function avcap_source_label( $source ) {
	$labels = array(
		'faq'      => __( 'FAQ', 'avi-support-assistant-pro' ),
		'ai'       => __( 'AI', 'avi-support-assistant-pro' ),
		'addon'    => __( 'AI', 'avi-support-assistant-pro' ),
		'products' => __( 'Products', 'avi-support-assistant-pro' ),
		'search'   => __( 'Site search', 'avi-support-assistant-pro' ),
		'fallback' => __( 'No answer', 'avi-support-assistant-pro' ),
		'lead'     => __( 'Lead', 'avi-support-assistant-pro' ),
		'callback' => __( 'Callback', 'avi-support-assistant-pro' ),
		'order'    => __( 'Order status', 'avi-support-assistant-pro' ),
		'welcome'  => __( 'Welcome', 'avi-support-assistant-pro' ),
	);

	return isset( $labels[ $source ] ) ? $labels[ $source ] : $source;
}

/**
 * Analytics screen.
 */
function avcap_render_analytics_page() {
	if ( ! current_user_can( 'manage_options' ) ) {
		return;
	}

	$a        = avcap_get_analytics( 30 );
	$answered = $a['answered'];
	$total    = array_sum( $answered );
	$cap      = (int) avcap_get( 'ai_monthly_cap' );
	$max_day  = max( 1, max( $a['daily'] ) );

	$cards = array(
		__( 'Conversations', 'avi-support-assistant-pro' )     => number_format_i18n( $a['conversations'] ),
		__( 'Visitor questions', 'avi-support-assistant-pro' ) => number_format_i18n( $a['questions'] ),
		__( 'Leads', 'avi-support-assistant-pro' )             => number_format_i18n( $a['leads'] ),
		__( 'Callback requests', 'avi-support-assistant-pro' ) => number_format_i18n( $a['callbacks'] ),
		__( 'AI replies this month', 'avi-support-assistant-pro' ) => number_format_i18n( avcap_ai_usage() ) . ( $cap ? ' / ' . number_format_i18n( $cap ) : '' ),
	);

	$labels = array(
		'faq'      => __( 'Answered from FAQs', 'avi-support-assistant-pro' ),
		'ai'       => __( 'Answered by AI', 'avi-support-assistant-pro' ),
		'products' => __( 'Showed products', 'avi-support-assistant-pro' ),
		'search'   => __( 'Suggested site pages', 'avi-support-assistant-pro' ),
		'fallback' => __( 'No answer', 'avi-support-assistant-pro' ),
	);
	?>
	<div class="wrap avcap-analytics">
		<h1><?php esc_html_e( 'Analytics', 'avi-support-assistant-pro' ); ?></h1>
		<p class="description"><?php esc_html_e( 'Last 30 days. Based on saved chat history.', 'avi-support-assistant-pro' ); ?></p>

		<div class="avcap-cards">
			<?php foreach ( $cards as $label => $value ) : ?>
				<div class="avcap-card">
					<span class="avcap-card-value"><?php echo esc_html( $value ); ?></span>
					<span class="avcap-card-label"><?php echo esc_html( $label ); ?></span>
				</div>
			<?php endforeach; ?>
		</div>

		<div class="avcap-panels">
			<div class="avcap-panel">
				<h2><?php esc_html_e( 'How questions were answered', 'avi-support-assistant-pro' ); ?></h2>
				<?php foreach ( $labels as $key => $label ) : ?>
					<?php $pct = $total ? round( $answered[ $key ] * 100 / $total ) : 0; ?>
					<div class="avcap-bar-row">
						<span class="avcap-bar-label"><?php echo esc_html( $label ); ?></span>
						<span class="avcap-bar"><span class="avcap-bar-fill is-<?php echo esc_attr( $key ); ?>" style="<?php echo esc_attr( 'width:' . $pct . '%' ); ?>"></span></span>
						<span class="avcap-bar-value"><?php echo esc_html( number_format_i18n( $answered[ $key ] ) . ' (' . $pct . '%)' ); ?></span>
					</div>
				<?php endforeach; ?>
			</div>

			<div class="avcap-panel">
				<h2><?php esc_html_e( 'Top visitor questions', 'avi-support-assistant-pro' ); ?></h2>
				<?php if ( empty( $a['top'] ) ) : ?>
					<p><em><?php esc_html_e( 'No questions yet.', 'avi-support-assistant-pro' ); ?></em></p>
				<?php else : ?>
					<ol class="avcap-top">
						<?php foreach ( $a['top'] as $row ) : ?>
							<li><span><?php echo esc_html( wp_trim_words( $row['question'], 14 ) ); ?></span> <strong><?php echo esc_html( number_format_i18n( (int) $row['total'] ) ); ?></strong></li>
						<?php endforeach; ?>
					</ol>
				<?php endif; ?>
			</div>
		</div>

		<div class="avcap-panel">
			<h2><?php esc_html_e( 'Conversations per day', 'avi-support-assistant-pro' ); ?></h2>
			<div class="avcap-daily" role="img" aria-label="<?php esc_attr_e( 'Conversations per day for the last 30 days', 'avi-support-assistant-pro' ); ?>">
				<?php foreach ( $a['daily'] as $day => $count ) : ?>
					<span class="avcap-day" style="<?php echo esc_attr( 'height:' . max( 2, round( $count * 100 / $max_day ) ) . '%' ); ?>" title="<?php echo esc_attr( $day . ': ' . $count ); ?>"></span>
				<?php endforeach; ?>
			</div>
		</div>
	</div>
	<?php
}

/**
 * Admin assets for Pro screens.
 *
 * @param string $hook_suffix Hook suffix.
 */
function avcap_admin_assets( $hook_suffix ) {
	if ( false === strpos( $hook_suffix, 'avcap-' ) ) {
		return;
	}

	wp_enqueue_style( 'avca-admin', AVCA_URL . 'assets/css/admin.css', array(), AVCA_VERSION );
	wp_enqueue_style( 'avcap-admin', AVCAP_URL . 'assets/css/pro-admin.css', array( 'avca-admin' ), AVCAP_VERSION );
	wp_enqueue_script( 'avcap-admin', AVCAP_URL . 'assets/js/pro-admin.js', array(), AVCAP_VERSION, true );
	wp_localize_script(
		'avcap-admin',
		'avcapAdmin',
		array(
			'ajaxUrl' => admin_url( 'admin-ajax.php' ),
			'testing' => __( 'Testing…', 'avi-support-assistant-pro' ),
			'failed'  => __( 'Request failed. Check your connection and try again.', 'avi-support-assistant-pro' ),
		)
	);
}
add_action( 'admin_enqueue_scripts', 'avcap_admin_assets' );