/inc/notification.php

<?php  





function dwqa_get_admin_email(){

    $admin_email = get_option( 'dwqa_subscrible_sendto_address' );

    if( ! $admin_email ) {

        $admin_email = get_bloginfo( 'admin_email' );

    }

    return explode(',', $admin_email);

}



function dwqa_new_question_notify( $question_id, $user_id ){

    // receivers

    $admin_email = dwqa_get_admin_email();



    $enabled = get_option( 'dwqa_subscrible_enable_new_question_notification', 1);

    if( !$enabled ) {

        return false;

    }

    $question = get_post( $question_id );

    if( ! $question ) {

        return false;

    }



    $subject = get_option( 'dwqa_subscrible_new_question_email_subject' );

    if( ! $subject ) {

        $subject = __('A new question was posted on {site_name}', 'dwqa');

    }

    $subject = str_replace('{site_name}', get_bloginfo( 'name' ), $subject);

    $subject = str_replace( '{question_title}', $question->post_title, $subject);

    $subject = str_replace( '{question_id}', $question->ID, $subject);

    $subject = str_replace( '{username}', get_the_author_meta( 'display_name', $user_id ), $subject);

    // To send HTML mail, the Content-type header must be set

    $headers  = 'MIME-Version: 1.0' . "\r\n";

    $headers .= 'Content-type: text/html; charset=utf-8' . "\r\n";

    //From email 

    $from_email = get_option( 'dwqa_subscrible_from_address' );

    if( $from_email ) {

        $headers .= "From: " . $from_email . "\r\n";

    }



    //Cc email

    $cc_address = get_option( 'dwqa_subscrible_cc_address' );

    if( $cc_address ) {

        $headers .= "Cc: " . $cc_address . "\r\n";

    }

    //Bcc email

    $bcc_address = get_option( 'dwqa_subscrible_bcc_address' );

    if( $bcc_address ) {

        $headers .= "Bcc: " . $bcc_address . "\r\n";

    }

    

    $message = dwqa_get_mail_template( 'dwqa_subscrible_new_question_email', 'new-question' );

    if( ! $message ) {

        return false;

    }

    // Replacement

    

    $admin = get_user_by( 'email', $admin_email[0] );

    if( $admin ) {

        $message = str_replace( '{admin}', get_the_author_meta( 'display_name', $admin->ID ), $message);

    }

    //sender

    $message = str_replace( '{user_avatar}', get_avatar( $user_id, '60'), $message);

    $message = str_replace( '{user_link}', get_author_posts_url( $user_id ), $message);

    $message = str_replace( '{username}', get_the_author_meta( 'display_name', $user_id ), $message);

    //question

    $message = str_replace( '{question_link}', get_permalink( $question_id ), $message);

    $message = str_replace( '{question_title}', $question->post_title, $message);

    $message = str_replace( '{question_content}', $question->post_content, $message);

    // Site info

    $logo = get_option( 'dwqa_subscrible_email_logo','' );

    $logo = $logo ? '<img src="'.$logo.'" alt="'.get_bloginfo( 'name' ).'" style="max-width: 100%; height: auto;" />' : '';

    $message = str_replace( '{site_logo}', $logo, $message );

    $message = str_replace( '{site_name}', get_bloginfo( 'name' ), $message );

    $message = str_replace( '{site_description}', get_bloginfo( 'description' ), $message );

    $message = str_replace( '{site_url}', site_url(), $message );



    // start send out email

    wp_mail( $admin_email, $subject, $message, $headers );

}

add_action( 'dwqa_add_question', 'dwqa_new_question_notify', 10, 2 );





function dwqa_new_answer_nofity( $answer_id ){

    $enabled = get_option( 'dwqa_subscrible_enable_new_answer_notification', 1);

    if( !$enabled ) {

        return false;

    }



    //Admin email

    $admin_email = get_bloginfo( 'admin_email' );;

    $enable_send_copy = get_option( 'dwqa_subscrible_send_copy_to_admin' );



    $question_id = get_post_meta( $answer_id, '_question', true );

    $question = get_post( $question_id );

    $answer = get_post( $answer_id );

    if( $answer->post_status != 'publish' && $answer->post_status != 'private' ) {

        return false;

    }

    //Send email alert for author of question about this answer

    if( dwqa_is_anonymous($question_id) ) {

        $email = get_post_meta( $question_id, '_dwqa_anonymous_email', true );

        if( ! is_email( $email ) ) {

            return false;

        }

    } else {

        // if user is not the author of question/answer, add user to followers list

        if( $question->post_author != $answer->post_author ) {

            if(  ! dwqa_is_followed( $question_id, $answer->post_author ) ) {

                add_post_meta( $question_id, '_dwqa_followers', $answer->post_author );

            }

        }



        $email = get_the_author_meta( 'user_email', $question->post_author );

    }



    $subject = get_option( 'dwqa_subscrible_new_answer_email_subject' );

    if( ! $subject ) {

        $subject = __('A new answer for "{question_title}" was posted on {site_name}', 'dwqa');

    }

    $subject = str_replace('{site_name}', get_bloginfo( 'name' ), $subject);

    $subject = str_replace( '{question_title}', $question->post_title, $subject);

    $subject = str_replace( '{question_id}', $question->ID, $subject);



    // To send HTML mail, the Content-type header must be set

    $headers  = 'MIME-Version: 1.0' . "\r\n";

    $headers .= 'Content-type: text/html; charset=utf-8' . "\r\n";



    //From email 

    $from_email = get_option( 'dwqa_subscrible_from_address' );

    if( $from_email ) {

        $headers .= "From: " . $from_email . "\r\n";

    }



    $message = dwqa_get_mail_template( 'dwqa_subscrible_new_answer_email', 'new-answer' );

    if( ! $message ) {

        return false;

    }



    //Receiver

    $message = str_replace( '{question_author}', get_the_author_meta( 'display_name', $question->post_author ), $message );

    //Answer

    $answer  = get_post( $answer_id ); 



    if( dwqa_is_anonymous($answer_id) ) {

        $user_id = 0;

        $display_name = __('Anonymous','dwqa');

        $avatar = get_avatar( $user_id, '60');

        $answer_author = __('Anonymous','dwqa');

    } else {

        $user_id = $answer->post_author;

        $display_name = get_the_author_meta( 'display_name', $user_id );

        $avatar = get_avatar( $user_id, '60');

        $answer_author = '<a href="'.get_author_posts_url( $user_id ).'" >'.get_the_author_meta( 'display_name', $user_id ).'</a>';

    }





    $subject = str_replace( '{username}', $display_name, $subject);

    $subject = str_replace( '{answer_author}', $answer_author, $subject);



    $message = str_replace( '{answer_avatar}', $avatar, $message);

    $message = str_replace( '{answer_author}', $answer_author, $message);

    $message = str_replace( '{question_link}', get_permalink( $question->ID ), $message);

    $message = str_replace( '{answer_link}', get_permalink( $question->ID ) . '#answer-' . $answer_id, $message);

    $message = str_replace( '{question_title}', $question->post_title, $message);

    $message = str_replace( '{answer_content}', $answer->post_content, $message);

    // logo replace

    $logo = get_option( 'dwqa_subscrible_email_logo','' );

    $logo = $logo ? '<img src="'.$logo.'" alt="'.get_bloginfo( 'name' ).'" style="max-width: 100%; height: auto;" />' : '';

    $message = str_replace( '{site_logo}', $logo, $message);

    $message = str_replace( '{site_name}', get_bloginfo( 'name' ), $message);

    $message = str_replace( '{site_description}', get_bloginfo( 'description' ), $message );

    $message = str_replace( '{site_url}', site_url(), $message);



    $enable_notify = get_option( 'dwqa_subscrible_enable_new_answer_followers_notification', true );

    

    if( $enable_notify ) {

        $followers = get_post_meta( $question_id, '_dwqa_followers' );





        $answer_email = get_the_author_meta( 'user_email', $answer->post_author );

        if( ! empty($followers) ) {

            $question_link = get_permalink( $question->ID );



            $follow_subject = get_option( 'dwqa_subscrible_new_answer_followers_email_subject' );

            if( ! $follow_subject ) {

                $follow_subject = __('You have a new answer for your followed question','dwqa');

            }

            $follow_subject = str_replace('{site_name}', get_bloginfo( 'name' ), $follow_subject);

            $follow_subject = str_replace( '{question_title}', $question->post_title, $follow_subject);

            $follow_subject = str_replace( '{question_id}', $question->ID, $follow_subject);

            $follow_subject = str_replace( '{username}', $display_name, $follow_subject);

            $follow_subject = str_replace( '{answer_author}', $answer_author, $follow_subject);



            $message_to_follower = dwqa_get_mail_template( 'dwqa_subscrible_new_answer_followers_email', 'new-answer-followers' );



            

            $message_to_follower = str_replace( '{answer_avatar}', $avatar, $message_to_follower);

            $message_to_follower = str_replace( '{answer_author}', $answer_author, $message_to_follower);

            $message_to_follower = str_replace( '{question_link}', get_permalink( $question->ID ), $message_to_follower);

            $message_to_follower = str_replace( '{question_title}', $question->post_title, $message_to_follower);

            $message_to_follower = str_replace( '{answer_content}', $answer->post_content, $message_to_follower);

            $message_to_follower = str_replace( '{site_logo}', $logo, $message_to_follower);

            $message_to_follower = str_replace( '{site_name}', get_bloginfo( 'name' ), $message_to_follower);

            $message_to_follower = str_replace( '{site_description}', get_bloginfo( 'description' ), $message_to_follower );

            $message_to_follower = str_replace( '{site_url}', site_url(), $message_to_follower);



            foreach ( $followers as $follower ) {

                $follower = (int) $follower;

                $user_data = get_userdata( $follower );

                if ($user_data) {

                    $follow_email = $user_data->user_email;

                    $follower_name = $user_data->display_name;

                    if( $follow_email && $follow_email != $email && $follow_email != $answer_email ) {

                        //Send email to follower

                        $message_to_each_follower = str_replace( '{follower}', $follower_name, $message_to_follower );

                        wp_mail( $follow_email, $follow_subject, $message_to_each_follower, $headers );

                        if( $enable_send_copy && $follow_email != $admin_email ) {

                            wp_mail( $admin_email, $follow_subject, $message_to_each_follower, $headers );

                        }

                    }

                }



            }

        }

    } // Send email to followers



    if( $question->post_author != $answer->post_author ) {

        wp_mail( $email, $subject, $message, $headers );

        if( $enable_send_copy && $email != $admin_email ) {

            wp_mail( $admin_email, $subject, $message, $headers );

        }

    }

}

add_action( 'dwqa_add_answer', 'dwqa_new_answer_nofity' );

add_action( 'dwqa_update_answer', 'dwqa_new_answer_nofity' );



function dwqa_new_comment_notify( $comment_id, $comment ){

    $parent = get_post_type( $comment->comment_post_ID );



    //Admin email

    $admin_email = get_bloginfo( 'admin_email' );

    $enable_send_copy = get_option( 'dwqa_subscrible_send_copy_to_admin' );



    if ( 1 == $comment->comment_approved && ( 'dwqa-question' == $parent || 'dwqa-answer' == $parent )  ) { 

        if( $parent == 'dwqa-question' ) {

            $enabled = get_option( 'dwqa_subscrible_enable_new_comment_question_notification', 1);        

        } elseif ( $parent == 'dwqa-answer' ) {

            $enabled = get_option( 'dwqa_subscrible_enable_new_comment_answer_notification', 1);

        }

    

        if( !$enabled ) {

            return false;

        }



        $post_parent = get_post( $comment->comment_post_ID );



        

        if( dwqa_is_anonymous( $comment->comment_post_ID ) ) {

            $post_parent_email = get_post_meta( $comment->comment_post_ID, '_dwqa_anonymous_email', true );

            if( ! is_email( $post_parent_email ) ) {

                return false;

            }

        } else {

            // if user is not the author of question/answer, add user to followers list

            if( $post_parent->post_author != $comment->user_id ) {



                if(  ! dwqa_is_followed( $post_parent->ID, $comment->user_id ) ) {

                    add_post_meta( $post_parent->ID, '_dwqa_followers', $comment->user_id );

                }

            }

            $post_parent_email = get_the_author_meta( 'user_email', $post_parent->post_author );

        }



        // To send HTML mail, the Content-type header must be set

        $headers  = 'MIME-Version: 1.0' . "\r\n";

        $headers .= 'Content-type: text/html; charset=utf-8' . "\r\n";

        //From email 

        $from_email = get_option( 'dwqa_subscrible_from_address' );

        if( $from_email ) {

            $headers .= "From: " . $from_email . "\r\n";

        }

        

        if( $parent == 'dwqa-question' ) {

            $message = dwqa_get_mail_template( 'dwqa_subscrible_new_comment_question_email', 'new-comment-question' );    

            $subject = get_option( 'dwqa_subscrible_new_comment_question_email_subject',__('[{site_name}] You have a new comment for question {question_title}', 'dwqa')  );

            $message = str_replace( '{question_author}', get_the_author_meta( 'display_name', $post_parent->post_author ), $message);

            $question = $post_parent;

        } else {

            $message = dwqa_get_mail_template( 'dwqa_subscrible_new_comment_answer_email', 'new-comment-answer' );

            $subject = get_option( 'dwqa_subscrible_new_comment_answer_email_subject',__('[{site_name}] You have a new comment for answer', 'dwqa')  );

            $message = str_replace( '{answer_author}', get_the_author_meta( 'display_name', $post_parent->post_author ), $message);

            $question_id = get_post_meta( $post_parent->ID, '_question', true );

            $question = get_post( $question_id );

        }

        $subject = str_replace( '{site_name}', get_bloginfo( 'name' ), $subject);

        $subject = str_replace( '{question_title}', $question->post_title, $subject);

        $subject = str_replace( '{question_id}', $question->ID, $subject);

        $subject = str_replace( '{username}',get_the_author_meta( 'display_name', $comment->user_id ), $subject);



        if( ! $message ) {

            return false;

        }

        // logo replace

        $logo = get_option( 'dwqa_subscrible_email_logo','' );

        $logo = $logo ? '<img src="'.$logo.'" alt="'.get_bloginfo( 'name' ).'" style="max-width: 100%; height: auto;" />' : '';

        $subject = str_replace('{comment_author}', get_the_author_meta( 'display_name', $comment->user_id ), $subject );

        $message = str_replace( '{site_logo}', $logo, $message);

        $message = str_replace( '{question_link}', get_permalink( $question->ID ), $message);

        $message = str_replace( '{comment_link}', get_permalink( $question->ID ) . '#comment-' . $comment_id, $message);

        $message = str_replace( '{question_title}', $question->post_title, $message);

        $message = str_replace( '{comment_author_avatar}', get_avatar( $comment->user_id, '60'), $message);

        $message = str_replace( '{comment_author_link}', get_author_posts_url( $comment->user_id ), $message);

        $message = str_replace('{comment_author}', get_the_author_meta( 'display_name', $comment->user_id ), $message );

        $message = str_replace( '{comment_content}', $comment->comment_content, $message);

        $message = str_replace( '{site_name}', get_bloginfo( 'name' ), $message);

        $message = str_replace( '{site_description}', get_bloginfo( 'description' ), $message );

        $message = str_replace( '{site_url}', site_url(), $message);

        if( $parent == 'dwqa-question' ) {

            $enable_notify = get_option( 'dwqa_subscrible_enable_new_comment_question_followers_notify', true );

        } else {

            $enable_notify = get_option( 'dwqa_subscrible_enable_new_comment_answer_followers_notification', true );

        }

        

        if( $enable_notify ) {

            //Follower email task

            $followers = get_post_meta( $post_parent->ID, '_dwqa_followers' );

            $comment_email = get_the_author_meta( 'user_email', $comment->user_id );



            if( $parent == 'dwqa-question' ) {

                $message_to_follower = dwqa_get_mail_template( 'dwqa_subscrible_new_comment_question_followers_email', 'new-comment-question' );    

                $follow_subject = get_option( 'dwqa_subscrible_new_comment_question_followers_email_subject',__('[{site_name}] You have a new comment for question {question_title}', 'dwqa')  );

                $message_to_follower = str_replace( '{question_author}', get_the_author_meta( 'display_name', $post_parent->post_author ), $message_to_follower);

                $question = $post_parent;

            } else {

                $message_to_follower = dwqa_get_mail_template( 'dwqa_subscrible_new_comment_answer_followers_email', 'new-comment-answer' );

                $follow_subject = get_option( 'dwqa_subscrible_new_comment_answer_followers_email_subject',__('[{site_name}] You have a new comment for answer', 'dwqa')  );

                $message_to_follower = str_replace( '{answer_author}', get_the_author_meta( 'display_name', $post_parent->post_author ), $message_to_follower);

            }

            $follow_subject = str_replace( '{site_name}', get_bloginfo( 'name' ), $follow_subject);

            $follow_subject = str_replace( '{question_title}', $question->post_title, $follow_subject);

            $follow_subject = str_replace( '{question_id}', $question->ID, $follow_subject);

            $follow_subject = str_replace( '{username}',get_the_author_meta( 'display_name', $comment->user_id ), $follow_subject);



            $follow_subject = str_replace('{comment_author}', get_the_author_meta( 'display_name', $comment->user_id ), $follow_subject );

            $message_to_follower = str_replace( '{site_logo}', $logo, $message_to_follower);

            $message_to_follower = str_replace( '{question_link}', get_permalink( $question->ID ), $message_to_follower);

            $comment_link = get_permalink( $question->ID ) . '#comment-' . $comment_id;

            $message_to_follower = str_replace( '{comment_link}', $comment_link, $message_to_follower);

            $message_to_follower = str_replace( '{question_title}', $question->post_title, $message_to_follower);

            $message_to_follower = str_replace( '{comment_author_avatar}', get_avatar( $comment->user_id, '60'), $message_to_follower);

            $message_to_follower = str_replace( '{comment_author_link}', get_author_posts_url( $comment->user_id ), $message_to_follower);

            $message_to_follower = str_replace('{comment_author}', get_the_author_meta( 'display_name', $comment->user_id ), $message_to_follower );

            $message_to_follower = str_replace( '{comment_content}', $comment->comment_content, $message_to_follower);

            $message_to_follower = str_replace( '{site_name}', get_bloginfo( 'name' ), $message_to_follower);

            $message_to_follower = str_replace( '{site_description}', get_bloginfo( 'description' ), $message_to_follower );

            $message_to_follower = str_replace( '{site_url}', site_url(), $message_to_follower);



            if( ! empty($followers) ) {

                foreach ( $followers as $follower ) {

                    $follower = (int) $follower;

                    $user_data = get_userdata( $follower );

                    if ($user_data) {

                        $follow_email = $user_data->user_email;

                        $follower_name = $user_data->display_name;



                        if( $follow_email && $follow_email != $post_parent_email && $follow_email != $comment_email ) {



                            $message_to_each_follower = str_replace( '{follower}', $follower_name, $message_to_follower );

                            wp_mail( $follow_email, $follow_subject, $message_to_each_follower, $headers );

                            if( $enable_send_copy && $follow_email != $admin_email ) {

                                wp_mail( $admin_email, $follow_subject, $message_to_each_follower, $headers );

                            }

                        }

                    }

                }

            }

        }





        if( $post_parent->post_author != $comment->user_id ) {

            wp_mail( $post_parent_email, $subject, $message, $headers );

            if( $enable_send_copy && $admin_email != $post_parent_email ) {

                wp_mail( $admin_email, $subject, $message, $headers );

            }

        }



    }

}

add_action( 'wp_insert_comment', 'dwqa_new_comment_notify',10,2 );



?>