class-evf-emails.php — Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI 2.0.3

everest-forms / includes / class-evf-emails.php

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class-evf-emails.php

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1	<?php
2	/**
3	* This class handles all (notification) emails sent by Everest Forms.
4	*
5	* Heavily influenced by the great AffiliateWP plugin by Pippin Williamson.
6	* https://github.com/AffiliateWP/AffiliateWP/blob/master/includes/emails/class-affwp-emails.php
7	*
8	* @package EverestForms\Classes\Emails
9	* @version 1.2.0
10	* @since 1.0.0
11	*/
12
13	defined( 'ABSPATH' ) \|\| exit;
14
15	/**
16	* Email class.
17	*/
18	class EVF_Emails {
19
20	/**
21	* Holds the from address.
22	*
23	* @var string
24	*/
25	private $from_address;
26
27	/**
28	* Holds the from name.
29	*
30	* @var string
31	*/
32	private $from_name;
33
34	/**
35	* Holds the reply-to address.
36	*
37	* @var string
38	*/
39	private $reply_to = false;
40
41	/**
42	* Holds the carbon copy addresses.
43	*
44	* @var string
45	*/
46	private $cc = false;
47
48	/**
49	* Holds the blind carbon copy addresses.
50	*
51	* @var string
52	*/
53	private $bcc = false;
54
55	/**
56	* Holds the email content type.
57	*
58	* @var string
59	*/
60	private $content_type;
61
62	/**
63	* Holds the email headers.
64	*
65	* @var string
66	*/
67	private $headers;
68
69	/**
70	* Holds the email attachments.
71	*
72	* @var string
73	*/
74	public $attachments = '';
75
76	/**
77	* Whether to send email in HTML.
78	*
79	* @var bool
80	*/
81	private $html = true;
82
83	/**
84	* The email template to use.
85	*
86	* @var string
87	*/
88	private $template;
89
90	/**
91	* Form data.
92	*
93	* @var array
94	*/
95	public $form_data = array();
96
97	/**
98	* Fields, formatted, and sanitized.
99	*
100	* @var array
101	*/
102	public $fields = array();
103
104	/**
105	* Entry ID.
106	*
107	* @var int
108	*/
109	public $entry_id = '';
110
111	/**
112	* Constructor.
113	*/
114	public function __construct() {
115	if ( 'none' === $this->get_template() ) {
116	$this->html = false;
117	}
118
119	// Hooks.
120	add_action( 'everest_forms_email_send_before', array( $this, 'send_before' ) );
121	add_action( 'everest_forms_email_send_after', array( $this, 'send_after' ) );
122	}
123
124	/**
125	* Set a property.
126	*
127	* @param string $key Object property key.
128	* @param mixed $value Object property value.
129	*/
130	public function __set( $key, $value ) {
131	$this->$key = $value;
132	}
133
134	/**
135	* Get the email from name.
136	*
137	* @return string The email from name.
138	*/
139	public function get_from_name() {
140	if ( ! empty( $this->from_name ) ) {
141	$this->from_name = $this->process_tag( $this->from_name );
142	} else {
143	$this->from_name = get_bloginfo( 'name' );
144	}
145
146	return apply_filters( 'everest_forms_email_from_name', wp_specialchars_decode( $this->from_name ), $this );
147	}
148
149	/**
150	* Get the email from address.
151	*
152	* @return string The email from address.
153	*/
154	public function get_from_address() {
155	if ( ! empty( $this->from_address ) ) {
156	$this->from_address = $this->process_tag( $this->from_address );
157	} else {
158	$this->from_address = get_option( 'admin_email' );
159	}
160
161	return apply_filters( 'everest_forms_email_from_address', $this->from_address, $this );
162	}
163
164	/**
165	* Get the email reply-to.
166	*
167	* @return string The email reply-to address.
168	*/
169	public function get_reply_to() {
170	if ( ! empty( $this->reply_to ) ) {
171	$this->reply_to = $this->process_tag( $this->reply_to );
172
173	if ( ! is_email( $this->reply_to ) ) {
174	$this->reply_to = false;
175	}
176	}
177
178	return apply_filters( 'everest_forms_email_reply_to', $this->reply_to, $this );
179	}
180
181	/**
182	* Get the email carbon copy addresses.
183	*
184	* @return string The email carbon copy addresses.
185	*/
186	public function get_cc() {
187	if ( ! empty( $this->cc ) ) {
188	$this->cc = $this->process_tag( $this->cc );
189	$addresses = array_map( 'trim', explode( ',', $this->cc ) );
190
191	foreach ( $addresses as $key => $address ) {
192	if ( ! is_email( $address ) ) {
193	unset( $addresses[ $key ] );
194	}
195	}
196
197	$this->cc = implode( ',', $addresses );
198	}
199
200	return apply_filters( 'everest_forms_email_cc', $this->cc, $this );
201	}
202
203	/**
204	* Get the email blind carbon copy addresses.
205	*
206	* @return string The email blind carbon copy addresses.
207	*/
208	public function get_bcc() {
209	if ( ! empty( $this->bcc ) ) {
210	$this->bcc = $this->process_tag( $this->bcc );
211	$addresses = array_map( 'trim', explode( ',', $this->bcc ) );
212
213	foreach ( $addresses as $key => $address ) {
214	if ( ! is_email( $address ) ) {
215	unset( $addresses[ $key ] );
216	}
217	}
218
219	$this->bcc = implode( ',', $addresses );
220	}
221
222	return apply_filters( 'everest_forms_email_bcc', $this->bcc, $this );
223	}
224
225	/**
226	* Get the email content type.
227	*
228	* @return string The email content type.
229	*/
230	public function get_content_type() {
231	if ( ! $this->content_type && $this->html ) {
232	$this->content_type = apply_filters( 'everest_forms_email_default_content_type', 'text/html', $this );
233	} elseif ( ! $this->html ) {
234	$this->content_type = 'text/plain';
235	}
236
237	return apply_filters( 'everest_forms_email_content_type', $this->content_type, $this );
238	}
239
240	/**
241	* Get the email headers.
242	*
243	* @return string The email headers.
244	*/
245	public function get_headers() {
246	if ( ! $this->headers ) {
247	$this->headers = "From: {$this->get_from_name()} <{$this->get_from_address()}>\r\n";
248	if ( $this->get_reply_to() ) {
249	$this->headers .= "Reply-To: {$this->get_reply_to()}\r\n";
250	}
251	if ( $this->get_cc() ) {
252	$this->headers .= "Cc: {$this->get_cc()}\r\n";
253	}
254	if ( $this->get_bcc() ) {
255	$this->headers .= "Bcc: {$this->get_bcc()}\r\n";
256	}
257	$this->headers .= "Content-Type: {$this->get_content_type()}; charset=utf-8\r\n";
258	}
259
260	return apply_filters( 'everest_forms_email_headers', $this->headers, $this );
261	}
262
263	/**
264	* Build the email.
265	*
266	* @param string $message The email message.
267	* @return string
268	*/
269	public function build_email( $message ) {
270	if ( false === $this->html ) {
271	$message = $this->process_tag( $message, false, true );
272	$message = str_replace( '{all_fields}', $this->everest_forms_html_field_value( false ), $message );
273
274	return apply_filters( 'everest_forms_email_message', $message, $this );
275	}
276
277	ob_start();
278
279	evf_get_template( 'emails/header-' . $this->get_template() . '.php' );
280
281	// Hooks into the email header.
282	do_action( 'everest_forms_email_header', $this );
283
284	evf_get_template( 'emails/body-' . $this->get_template() . '.php' );
285
286	// Hooks into the email body.
287	do_action( 'everest_forms_email_body', $this );
288
289	evf_get_template( 'emails/footer-' . $this->get_template() . '.php' );
290
291	// Hooks into the email footer.
292	do_action( 'everest_forms_email_footer', $this );
293
294	$message = $this->process_tag( $message, false );
295	$message = nl2br( $message );
296
297	$body = ob_get_clean();
298	$message = str_replace( '{email}', $message, $body );
299	$message = str_replace( '{all_fields}', $this->everest_forms_html_field_value( true ), $message );
300	$message = make_clickable( $message );
301
302	return apply_filters( 'everest_forms_email_message', $message, $this );
303	}
304
305	/**
306	* Send the email.
307	*
308	* @param string $to The To address.
309	* @param string $subject The subject line of the email.
310	* @param string $message The body of the email.
311	* @param array $attachments Attachments to the email.
312	* @param string $connection_id Connection ID of the email.
313	*
314	* @return bool
315	*/
316	public function send( $to, $subject, $message, $attachments = '', $connection_id = '' ) {
317	if ( ! did_action( 'init' ) && ! did_action( 'admin_init' ) ) {
318	evf_doing_it_wrong( __FUNCTION__, __( 'You cannot send emails with EVF_Emails until init/admin_init has been reached', 'everest-forms' ), null );
319	return false;
320	}
321
322	// Don't send anything if emails have been disabled.
323	if ( $this->is_email_disabled() ) {
324	return false;
325	}
326
327	// Don't send if email address is invalid.
328	if ( ! is_email( $to ) ) {
329	return false;
330	}
331
332	// Hooks before email is sent.
333	do_action( 'everest_forms_email_send_before', $this );
334
335	$message = apply_filters( 'everest_forms_entry_email__message', str_replace( '{entry_id}', absint( $this->entry_id ), $message ), $this );
336
337	// Email Template Enabled or not checked.
338	$email_template_included = ! empty( $this->form_data['settings']['email'][ $connection_id ]['choose_template'] ) ? true : false;
339
340	if ( $email_template_included && true === $this->html ) {
341	$message = apply_filters( 'everest_forms_email_template_message', $message, $this, $connection_id );
342	} else {
343	$message = $this->build_email( $message );
344	}
345	$this->attachments = apply_filters( 'everest_forms_email_attachments', $this->attachments, $this );
346	$subject = evf_decode_string( $this->process_tag( $subject ) );
347
348	// Let's do this.
349	$sent = wp_mail( $to, $subject, $message, $this->get_headers(), $this->attachments );
350
351	// Hooks after the email is sent.
352	do_action( 'everest_forms_email_send_after', $this );
353
354	return $sent;
355	}
356
357	/**
358	* Add filters/actions before the email is sent.
359	*/
360	public function send_before() {
361	add_filter( 'wp_mail_from', array( $this, 'get_from_address' ) );
362	add_filter( 'wp_mail_from_name', array( $this, 'get_from_name' ) );
363	add_filter( 'wp_mail_content_type', array( $this, 'get_content_type' ) );
364	}
365
366	/**
367	* Remove filters/actions after the email is sent.
368	*/
369	public function send_after() {
370	remove_filter( 'wp_mail_from', array( $this, 'get_from_address' ) );
371	remove_filter( 'wp_mail_from_name', array( $this, 'get_from_name' ) );
372	remove_filter( 'wp_mail_content_type', array( $this, 'get_content_type' ) );
373	}
374
375	/**
376	* Converts text formatted HTML. This is primarily for turning line breaks
377	* into <p> and <br/> tags.
378	*
379	* @param string $message Text to convert.
380	* @return string
381	*/
382	public function text_to_html( $message ) {
383	if ( 'text/html' === $this->content_type \|\| true === $this->html ) {
384	$message = wpautop( $message );
385	}
386
387	return $message;
388	}
389
390	/**
391	* Processes a smart tag.
392	*
393	* @param string $string String that may contain tags.
394	* @param bool $sanitize Toggle to maybe sanitize.
395	* @param bool $linebreaks Toggle to process linebreaks.
396	*
397	* @return string
398	*/
399	public function process_tag( $string = '', $sanitize = true, $linebreaks = false ) {
400	$tag = apply_filters( 'everest_forms_process_smart_tags', $string, $this->form_data, $this->fields, $this->entry_id );
401	$tag = evf_decode_string( $tag );
402
403	if ( $sanitize ) {
404	if ( $linebreaks ) {
405	$tag = evf_sanitize_textarea_field( $tag );
406	} else {
407	$tag = sanitize_text_field( $tag );
408	}
409	}
410
411	return $tag;
412	}
413
414	/**
415	* Process the all fields smart tag if present.
416	*
417	* @param bool $html Toggle to use HTML or plaintext.
418	* @return string
419	*/
420	public function everest_forms_html_field_value( $html = true ) {
421	if ( empty( $this->fields ) ) {
422	return '';
423	}
424
425	// Make sure we have an entry id.
426	if ( ! empty( $this->entry_id ) ) {
427	$this->form_data['entry_id'] = (int) $this->entry_id;
428	}
429
430	$message = '';
431
432	if ( $html ) {
433	/*
434	* HTML emails.
435	*/
436	ob_start();
437
438	// Hooks into the email field.
439	do_action( 'everest_forms_email_field', $this );
440
441	evf_get_template( 'emails/field-' . $this->get_template() . '.php' );
442
443	$field_template = ob_get_clean();
444	$empty_message = '<em>' . __( '(empty)', 'everest-forms' ) . '</em>';
445
446	$field_iterator = 1;
447	foreach ( $this->fields as $meta_id => $field ) {
448	if (
449	! apply_filters( 'everest_forms_email_display_empty_fields', false ) &&
450	( empty( $field['value'] ) && '0' !== $field['value'] )
451	) {
452	continue;
453	}
454
455	// If empty value is provided for select field, don't send email.
456	if ( 'select' === $field['type'] && empty( $field['value'][0] ) ) {
457	continue;
458	}
459
460	if ( ( 'radio' === $field['type'] && empty( $field['value']['label'] ) ) \|\| ( 'payment-multiple' === $field['type'] && empty( $field['value']['label'] ) ) ) {
461	continue;
462	}
463
464	if ( ( 'checkbox' === $field['type'] && empty( $field['value']['label'][0] ) ) \|\| ( 'payment-checkbox' === $field['type'] && empty( $field['value']['label'] ) ) ) {
465	continue;
466	}
467
468	// If there's the export data filter, utilize that and re-loop promptly.
469	if ( has_filter( "everest_forms_field_exporter_{$field['type']}" ) ) {
470	$formatted_string = apply_filters( "everest_forms_field_exporter_{$field['type']}", $field, 'email-html', 2 );
471	$formatted_string['value'] = false === $formatted_string['value'] ? $empty_message : $formatted_string['value'];
472
473	$field_item = $field_template;
474	if ( 1 === $field_iterator ) {
475	$field_item = str_replace( 'border-top:1px solid #dddddd;', '', $field_item );
476	}
477
478	// Inject the label and value into the email template.
479	$field_item = str_replace( '{field_name}', $formatted_string['label'], $field_item );
480	$field_item = str_replace( '{field_value}', $formatted_string['value'], $field_item );
481
482	$message .= wpautop( $field_item );
483
484	// For BW compatibility reasons.
485	++$field_iterator;
486	continue;
487	}
488
489	$field_val = empty( $field['value'] ) && '0' !== $field['value'] ? $empty_message : $field['value'];
490	$field_name = isset( $field_val['name'] ) ? $field_val['name'] : $field['name'];
491	$field_label = ! empty( $field_val['label'] ) ? $field_val['label'] : $field_val;
492	$field_type = $field['type'];
493
494	// If empty label is provided for choice field, don't store their data nor send email.
495	if ( in_array( $field_type, array( 'radio', 'payment-multiple' ), true ) ) {
496	if ( isset( $field_val['label'] ) && '' === $field_val['label'] ) {
497	continue;
498	}
499	} elseif ( in_array( $field_type, array( 'checkbox', 'payment-checkbox' ), true ) ) {
500	if ( isset( $field_val['label'] ) && ( empty( $field_val['label'] ) \|\| '' === current( $field_val['label'] ) ) ) {
501	continue;
502	}
503	}
504
505	if ( isset( $field['value'], $field['value_raw'] ) && is_string( $field['value'] ) && in_array( $field_type, array( 'image-upload', 'file-upload' ), true ) ) {
506	$field['value'] = $field;
507	}
508
509	if ( isset( $field_val['type'] ) && in_array( $field['type'], array( 'image-upload', 'file-upload', 'rating' ), true ) ) {
510	if ( 'rating' === $field_val['type'] ) {
511	$value = ! empty( $field_val['value'] ) ? $field_val['value'] : 0;
512	$number_of_stars = ! empty( $field_val['number_of_rating'] ) ? $field_val['number_of_rating'] : 5;
513	$field_val = $value . '/' . $number_of_stars;
514	} else {
515	$field_val = empty( $field_val['file_url'] ) ? $empty_message : $field_val;
516	}
517	}
518
519	if ( 'rating' !== $field_type ) {
520	if ( is_array( $field_label ) ) {
521	$field_html = array();
522	foreach ( $field_label as $meta_val ) {
523	$field_html[] = esc_html( $meta_val );
524	}
525	$field_val = implode( ', ', $field_html );
526	} else {
527	$field_val = esc_html( $field_label );
528	}
529	}
530
531	if ( empty( $field_name ) ) {
532	$field_name = sprintf(
533	/* translators: %d - field ID. */
534	esc_html__( 'Field ID #%d', 'everest-forms' ),
535	absint( $field['id'] )
536	);
537	}
538
539	$field_item = $field_template;
540	if ( 1 === $field_iterator ) {
541	$field_item = str_replace( 'border-top:1px solid #dddddd;', '', $field_item );
542	}
543
544	$field_item = str_replace( '{field_name}', $field_name, $field_item );
545	$field_value = apply_filters( 'everest_forms_html_field_value', evf_decode_string( $field_val ), $field['value'], $this->form_data, 'email-html', $field );
546	$field_item = str_replace( '{field_value}', $field_value, $field_item );
547
548	$message .= wpautop( $field_item );
549	++$field_iterator;
550	}
551	} else {
552	/*
553	* Plain Text emails.
554	*/
555	foreach ( $this->fields as $field ) {
556	if ( ! apply_filters( 'everest_forms_email_display_empty_fields', false ) && ( empty( $field['value'] ) && '0' !== $field['value'] ) ) {
557	continue;
558	}
559
560	$field_val = empty( $field['value'] ) && '0' !== $field['value'] ? esc_html__( '(empty)', 'everest-forms' ) : $field['value'];
561	$field_name = isset( $field['name'] ) ? $field['name'] : '';
562
563	if ( is_array( $field_val ) ) {
564	$field_html = array();
565
566	foreach ( $field_val as $meta_val ) {
567	$field_html[] = $meta_val;
568	}
569
570	if ( ! empty( $field_html ) && is_array( $field_html ) ) {
571	$field_val = implode( ', ', $field_html );
572	} else {
573	$field_val = '';
574	}
575	}
576
577	if ( empty( $field_name ) ) {
578	$field_name = sprintf(
579	/* translators: %d - field ID. */
580	esc_html__( 'Field ID #%d', 'everest-forms' ),
581	absint( $field['id'] )
582	);
583	}
584
585	$message .= '--- ' . evf_decode_string( $field_name ) . " ---\r\n\r\n";
586	$field_value = evf_decode_string( $field_val ) . "\r\n\r\n";
587	$message .= apply_filters( 'everest_forms_plaintext_field_value', $field_value, $field['value'], $this->form_data, 'email-plain' );
588	}
589	}
590
591	if ( empty( $message ) ) {
592	$empty_message = esc_html__( 'An empty form was submitted.', 'everest-forms' );
593	$message = $html ? wpautop( $empty_message ) : $empty_message;
594	}
595
596	return $message;
597	}
598
599	/**
600	* Email kill switch if needed.
601	*
602	* @return bool
603	*/
604	public function is_email_disabled() {
605	return (bool) apply_filters( 'everest_forms_disable_all_emails', false, $this );
606	}
607
608	/**
609	* Get the enabled email template.
610	*
611	* @todo Email template.
612	*
613	* @return string When filtering return 'none' to switch to text/plain email.
614	*/
615	public function get_template() {
616	if ( ! $this->template ) {
617	$this->template = get_option( 'everest_forms_email_template', 'default' );
618	}
619
620	return apply_filters( 'everest_forms_email_template', $this->template );
621	}
622	}
623