<?php

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

class AIEO_DMM_Form_Insights extends AIEO_DMM_Module_Base {

	public function get_id()       { return 'form_insights'; }
	public function get_icon()     { return 'clipboard-list'; }
	public function get_label()    { return __( 'Form Insights', 'ai-eshop-optimizer' ); }
	public function get_group()    { return 'attribution'; }
	
	
	public function get_section()  { return 'sources'; }
	public function get_priority() { return 30; }

	public function register_hooks() {
		add_action( 'wp_ajax_aieo_form_respondents', array( $this, 'ajax_respondents' ) );
		add_action( 'admin_post_aieo_form_respondents_csv', array( $this, 'export_csv' ) );
	}

	
	private function guard() {
		if ( ! current_user_can( 'manage_woocommerce' ) ) {
			return false;
		}
		return class_exists( 'AIEO_Form_Insights' ) && AIEO_Form_Insights::available();
	}

	
	public function ajax_respondents() {
		AIEO_DMM::verify_ajax_request();
		if ( ! $this->guard() ) {
			wp_send_json_error( array( 'message' => __( 'Not available.', 'ai-eshop-optimizer' ) ), 403 );
		}
		$res = AIEO_Form_Insights::respondents(
			isset( $_POST['form_id'] ) ? (int) $_POST['form_id'] : 0,
			isset( $_POST['field_id'] ) ? sanitize_text_field( wp_unslash( $_POST['field_id'] ) ) : '',
			isset( $_POST['value'] ) ? sanitize_text_field( wp_unslash( $_POST['value'] ) ) : '',
			50,
			isset( $_POST['offset'] ) ? max( 0, (int) $_POST['offset'] ) : 0
		);
		if ( is_wp_error( $res ) ) {
			wp_send_json_error( array( 'message' => $res->get_error_message() ) );
		}
		
		
		
		unset( $res['emails'] );
		wp_send_json_success( $res );
	}

	
	public function export_csv() {
		if ( ! $this->guard() ) {
			wp_die( esc_html__( 'Not available.', 'ai-eshop-optimizer' ) );
		}
		check_admin_referer( 'aieo_form_respondents_csv' );
		$form_id  = isset( $_GET['form_id'] ) ? (int) $_GET['form_id'] : 0;
		$field_id = isset( $_GET['field_id'] ) ? sanitize_text_field( wp_unslash( $_GET['field_id'] ) ) : '';
		$value    = isset( $_GET['value'] ) ? sanitize_text_field( wp_unslash( $_GET['value'] ) ) : '';

		$res = AIEO_Form_Insights::respondents( $form_id, $field_id, $value, 5000, 0 );
		if ( is_wp_error( $res ) ) {
			wp_die( esc_html( $res->get_error_message() ) );
		}

		nocache_headers();
		header( 'Content-Type: text/csv; charset=utf-8' );
		header( 'Content-Disposition: attachment; filename="' . sanitize_file_name( 'respondents-' . $form_id . '-' . $value ) . '.csv"' );
		$out = fopen( 'php://output', 'w' );
		
		fwrite( $out, chr( 0xEF ) . chr( 0xBB ) . chr( 0xBF ) );
		fputcsv( $out, array( 'entry_id', 'date', 'name', 'email' ) );
		foreach ( (array) $res['rows'] as $r ) {
			fputcsv( $out, array( $r['entry_id'], $r['date'], $r['name'], $r['email'] ) );
		}
		fclose( $out );
		exit;
	}

	
	public function enqueue_admin_assets() {
		$css = 'assets/css/aieo-form-insights-admin.css';
		wp_enqueue_style( 'aieo-form-insights-admin', plugins_url( $css, AIEO_FILE ), array(), file_exists( AIEO_DIR . $css ) ? (string) filemtime( AIEO_DIR . $css ) : '1' );
	}

	public function render_subtab() {
		$available = class_exists( 'AIEO_Form_Insights' ) && AIEO_Form_Insights::available();
		$forms     = $available ? AIEO_Form_Insights::forms() : array();

		
		
		
		$form_id = 0;
		$goals   = class_exists( 'AIEO_DMM' ) ? AIEO_DMM::instance()->get_module( 'conversion_goals' ) : null;
		if ( $available && $goals && method_exists( $goals, 'preferred_insight_form_public' ) ) {
			$form_id = (int) $goals->preferred_insight_form_public( $forms );
		} elseif ( $available && ! empty( $forms ) ) {
			$first   = reset( $forms );
			$form_id = isset( $first['id'] ) ? (int) $first['id'] : 0;
		}

		$report = null;
		$error  = '';
		if ( $form_id > 0 ) {
			$r = AIEO_Form_Insights::distributions( $form_id );
			if ( is_wp_error( $r ) ) {
				$error = $r->get_error_message();
			} else {
				$report = $r;
			}
		}

		
		$url     = add_query_arg(
			array( 'page' => AIEO_DMM::MENU_SLUG, 'dmm_tab' => 'conversion_goals' ),
			admin_url( 'admin.php' )
		);
		$pointer = wp_kses_post( sprintf(
			
			__( 'Choosing which forms count as a conversion is a setting — it lives under %1$sSet Up &rarr; Conversion goals%2$s.', 'ai-eshop-optimizer' ),
			'<a href="' . esc_url( $url ) . '">',
			'</a>'
		) );

		$this->render_template( 'form-insights.php', array(
			'insight_available' => $available,
			'insight_forms'     => $forms,
			'insight_form_id'   => $form_id,
			'insight_report'    => $report,
			'insight_error'     => $error,
			'nonce'             => wp_create_nonce( AIEO_DMM::NONCE_ACTION ),
			'ajax'              => admin_url( 'admin-ajax.php' ),
			'pointer'           => $pointer,
		) );
	}
}