Validate the editorial checklist condition.

/**
 * Validate the editorial checklist condition.
 *
 * @param array $validation_result The validation result array passed by the filter.
 * @param array $workflow_action_params The workflow action parameters array passed by the filter.
 *
 * @return array The validation result array with the error message and type.
 */
function owf_ediotrial_checklist_validate_condition( $validation_result, $workflow_action_params ) {

    if ( get_option( 'oasiswf_checklist_action' ) === 'by_pass_the_checklist' ) {
        return $validation_result;
    }

    $post_id = intval( $workflow_action_params["post_id"] );

    $step_id = "";
    if ( isset( $workflow_action_params["step_id"] ) ) {
        $step_id = intval( $workflow_action_params["step_id"] );
    }

    $step_decision = '';
    if ( isset( $workflow_action_params["step_decision"] ) ) {
        $step_decision = sanitize_text_field( $workflow_action_params["step_decision"] );
    }

    // if the history_id is not null, it indicates that the post is in some workflow.
    // So, the step_id from the $workflow_action_params is essentially the next step_id and NOT current step_id
    // Use history to get the current step_id
    $ow_history_service = new OW_History_Service();
    $history_id         = $workflow_action_params['history_id'];
    if ( ! empty( $history_id ) ) {
        // get the current step_id from the history
        $history_details = $ow_history_service->get_action_history_by_id( $history_id );
        $step_id         = $history_details->step_id;
    }

    $associated_condition_group_id = $this->get_condition_group_for_step( $post_id, $step_id );

    if ( empty( $associated_condition_group_id ) ) {
        return $validation_result;
    }

    // don't evaluate the conditions if the user signed off as "rejected" or "unable to complete"
    // return an empty validation message
    if ( ! empty( $step_decision ) && $step_decision == "unable" ) {
        return $validation_result;
    }

    // Get workflow action post parameters by post id
    $post_parameters = $this->get_post_parameters( $post_id );

    $checklist_parameters = array_merge( $workflow_action_params, $post_parameters );

    // validate the context condition as you want to validate use $post_id for post id and $associated_condition_group_id for checklist group id 
    // after validation or running your condition make sure to set the error message in the validation result
    // and set the error type as "error" or "warning" like below

    $context_messages = "your custom error message";

    // Make sure to merge the error message with the existing error message in the validation result
    $validation_result['error_message'] = array_merge( $validation_result['error_message'], $context_messages );

    $validation_result['error_type'] = "error";

    // Check if checklist action is warning
    if ( get_option( 'oasiswf_checklist_action' ) === 'show_as_warning' &&
            count( $validation_result['error_message'] ) > 0 ) {
        $validation_result['error_type'] = "warning";
    }

    return $validation_result;
}
add_filter( 'owf_api_submit_to_workflow_pre', 'owf_ediotrial_checklist_validate_condition', 10, 2 );
add_filter( 'owf_api_sign_off_workflow_pre', 'owf_ediotrial_checklist_validate_condition', 10, 2 );