AnsPress_Process_Form::process_answer_form()

	public function process_answer_form() {
		$question_id = (int) ap_sanitize_unslash( 'form_question_id', 'r' );

		// Do security check, if fails then return.
		if ( ! ap_user_can_answer( $question_id ) || ! ap_verify_nonce( 'nonce_answer_' . $question_id ) ) {
			ap_ajax_json( array(
				'success'  => false,
				'snackbar' => [ 'message' => __( 'Sorry, you cannot asnwer on this question', 'anspress-question-answer' ) ],
			) );
		}

		global $ap_errors, $validate;
		$question = ap_get_post( $question_id );

		$editing_post_id = ap_isset_post_value( 'edit_post_id', false );

		/**
		 * FILTER: ap_answer_fields_validation
		 * Filter can be used to modify answer form fields.
		 *
		 * @var void
		 * @since 2.0.1
		 */
		$args = apply_filters( 'ap_answer_fields_validation', ap_get_answer_form_fields( $question->ID, $editing_post_id ) );

		$validate = new AnsPress_Validation( $args );

		/**
		 * ACTION
		 * ap_process_ask_form
		 *
		 * @since 4.0.0
		 */
		do_action( 'ap_process_answer_form', $validate );

		// Bail if there is error in validating form.
		ap_form_validation_error_response( $validate );

		$fields = $validate->get_sanitized_fields();
		$this->fields = $fields;

		if ( ! empty( $fields['edit_post_id'] ) ) {
			$this->edit_answer( $question );
			return;
		}

		// Check if duplicate.
		if ( false !== ap_find_duplicate_post( $fields['description'], 'answer', $question->ID ) ) {
			ap_ajax_json( array(
				'success'  => false,
				'form'     => ap_sanitize_unslash( 'ap_form_action' ),
				'snackbar' => [ 'message' => __( 'This seems to be a duplicate answer. An answer with same content already exists.', 'anspress-question-answer' ) ],
			) );
		}

		$filter = apply_filters( 'ap_before_inserting_answer', false, $fields['description'] );
		if ( true === $filter || is_array( $filter ) ) {
			if ( is_array( $filter ) ) {
				$this->result = $filter;
			}
			return;
		}

		$user_id = get_current_user_id();

		$answer_array = array(
			'post_author'		=> $user_id,
			'post_content' 		=> $fields['description'],
			'attach_uploads' 	=> true,
		);

		$answer_array['post_status'] = ap_new_edit_post_status( $user_id, 'answer', false );

		if ( isset( $this->fields['is_private'] ) && $this->fields['is_private'] ) {
			$answer_array['is_private'] = true;
		}

		// Check if anonymous post and have name.
		if ( ! is_user_logged_in() && ap_opt( 'allow_anonymous' ) && ! empty( $fields['anonymous_name'] ) ) {
			$answer_array['anonymous_name'] = $fields['anonymous_name'];
		}

		$answer_id = ap_save_answer( $question->ID, $answer_array );

		if ( $answer_id ) {
			ap_clear_unattached_media();
			ap_answer_post_ajax_response( $question->ID, $answer_id );
		}

	}