Rules for Condition Groups

apps/admin/src/plugins/formBuilder.ts

@@ -13,6 +13,7 @@ import editorFieldNumber from "@webiny/app-form-builder/admin/plugins/editor/for
 import editorFieldRadioButtons from "@webiny/app-form-builder/admin/plugins/editor/formFields/radioButtons";
 import editorFieldCheckboxes from "@webiny/app-form-builder/admin/plugins/editor/formFields/checkboxes";
 import editorFieldDateTime from "@webiny/app-form-builder/admin/plugins/editor/formFields/dateTime";
+import editorFieldConditionGroup from "@webiny/app-form-builder/admin/plugins/editor/formFields/conditionGroup";
 import editorFieldFirstName from "@webiny/app-form-builder/admin/plugins/editor/formFields/contact/firstName";
 import editorFieldLastName from "@webiny/app-form-builder/admin/plugins/editor/formFields/contact/lastName";
 import editorFieldEmail from "@webiny/app-form-builder/admin/plugins/editor/formFields/contact/email";
@@ -84,6 +85,7 @@ export default [
     editorFieldRadioButtons,
     editorFieldCheckboxes,
     editorFieldDateTime,
+    editorFieldConditionGroup,
     editorFieldFirstName,
     editorFieldLastName,
     editorFieldEmail,

apps/theme/layouts/forms/DefaultFormLayout.tsx

@@ -1,4 +1,4 @@
-import React, { useState } from "react";
+import React, { useState, useEffect } from "react";
 import { Form } from "@webiny/form";
 import { FormLayoutComponent } from "@webiny/app-form-builder/types";
 import styled from "@emotion/styled";
@@ -48,6 +48,8 @@ const DefaultFormLayout: FormLayoutComponent = ({
     submit,
     goToNextStep,
     goToPreviousStep,
+    validateStepConditions,
+    setFormState,
     isLastStep,
     isFirstStep,
     isMultiStepForm,
@@ -65,6 +67,12 @@ const DefaultFormLayout: FormLayoutComponent = ({
     // Is the form successfully submitted?
     const [formSuccess, setFormSuccess] = useState(false);
 
+    const [defData, setDefData] = useState(getDefaultValues());
+
+    useEffect(() => {
+        setDefData(getDefaultValues());
+    }, [formData.fields]);
+
     // All form fields - an array of rows where each row is an array that contain fields.
     const fields = getFields(currentStepIndex);
 
@@ -89,7 +97,14 @@ const DefaultFormLayout: FormLayoutComponent = ({
     return (
         /* "onSubmit" callback gets triggered once all the fields are valid. */
         /* We also pass the default values for all fields via the getDefaultValues callback. */
-        <Form onSubmit={submitForm} data={getDefaultValues()}>
+        <Form
+            onSubmit={submitForm}
+            data={defData}
+            onChange={data => {
+                validateStepConditions(data, currentStepIndex);
+                setFormState(data);
+            }}
+        >
             {({ submit }) => (
                 <Wrapper>
                     {isMultiStepForm && <StepTitle>{currentStep?.title}</StepTitle>}

apps/theme/layouts/forms/DefaultFormLayout/Field.tsx

@@ -33,6 +33,8 @@ export const Field = (props: FieldProps) => {
             return <HiddenField {...props} />;
         case "datetime":
             return <DateTimeField {...props} />;
+        case "condition-group":
+            return null;
         default:
             return <span>Cannot render field.</span>;
     }

packages/api-form-builder/src/plugins/crud/forms.crud.ts

@@ -355,7 +355,8 @@ export const createFormsCrud = (params: CreateFormsCrudParams): FormsCRUD => {
                 steps: [
                     {
                         title: "Step 1",
-                        layout: []
+                        layout: [],
+                        rules: []
                     }
                 ],
                 settings: await new models.FormSettingsModel().toJSON(),

packages/api-form-builder/src/plugins/crud/forms.models.ts

@@ -46,7 +46,8 @@ export const FormStepsModel = withFields({
         value: {},
         instanceOf: withFields({
             title: string(),
-            layout: object({ value: [] })
+            layout: object({ value: [] }),
+            rules: object({ value: [] })
         })()
     })
 })();

packages/api-form-builder/src/plugins/graphql/form.ts

@@ -57,6 +57,23 @@ const plugin: GraphQLSchemaPlugin<FormBuilderContext> = {
             input FbFormStepInput {
                 title: String
                 layout: [[String]]
+                rules: [FbFormRuleInput]
+            }
+
+            input FbFormRuleInput {
+                title: String
+                action: String
+                chain: String
+                id: String
+                conditions: [FbFormConditionInput]
+                isValid: Boolean
+            }
+
+            input FbFormConditionInput {
+                id: String
+                fieldName: String
+                filterType: String
+                filterValue: String
             }
 
             input FbFieldOptionsInput {
@@ -79,6 +96,23 @@ const plugin: GraphQLSchemaPlugin<FormBuilderContext> = {
             type FbFormStepType {
                 title: String
                 layout: [[String]]
+                rules: [FbFormRuleType]
+            }
+
+            type FbFormRuleType {
+                title: String
+                action: String
+                chain: String
+                id: String
+                conditions: [FbFormConditionType]
+                isValid: Boolean
+            }
+
+            type FbFormConditionType {
+                id: String
+                fieldName: String
+                filterType: String
+                filterValue: String
             }
 
             type FbFormFieldType {

packages/api-form-builder/src/types.ts

@@ -19,8 +19,25 @@ interface FbSubmissionMeta {
 interface FbFormStep {
     title: string;
     layout: string[][];
+    rules: FbFormRule[];
 }
 
+export type FbFormRule = {
+    action: string;
+    chain: string;
+    id: string;
+    title: string;
+    conditions: FbFormCondition[];
+    isValid: boolean;
+};
+
+export type FbFormCondition = {
+    id: string;
+    fieldName: string;
+    filterType: string;
+    filterValue: string;
+};
+
 interface FbFormFieldValidator {
     name: string;
     message: any;

packages/app-form-builder/src/admin/components/FormEditor/Context/functions/deleteField.ts

@@ -3,9 +3,10 @@ import { FbFormModelField, FbFormModel, FbFormModelFieldsLayout, FbFormStep } fr
 interface Params {
     field: FbFormModelField;
     data: FbFormModel;
-    targetStepId: string;
+    containerType?: "step" | "conditionGroup";
+    containerId: string;
 }
-export default ({ field, data, targetStepId }: Params): FbFormModel => {
+export default ({ field, data, containerType, containerId }: Params): FbFormModel => {
     // Remove the field from fields list...
     const fieldIndex = data.fields.findIndex(item => item._id === field._id);
     data.fields.splice(fieldIndex, 1);
@@ -18,10 +19,13 @@ export default ({ field, data, targetStepId }: Params): FbFormModel => {
 
     // ...and rebuild the layout object.
     const layout: FbFormModelFieldsLayout = [];
-    const targetStepLayout = data.steps.find(s => s.id === targetStepId) as FbFormStep;
+    const destinationContainerLayout =
+        containerType === "conditionGroup"
+            ? (data.fields.find(f => f._id === containerId)?.settings as FbFormStep)
+            : (data.steps.find(step => step.id === containerId) as FbFormStep);
     let currentRowIndex = 0;
 
-    targetStepLayout.layout.forEach(row => {
+    destinationContainerLayout.layout.forEach(row => {
         row.forEach(fieldId => {
             const field = data.fields.find(item => item._id === fieldId);
             if (!field) {
@@ -36,6 +40,6 @@ export default ({ field, data, targetStepId }: Params): FbFormModel => {
         layout[currentRowIndex] && layout[currentRowIndex].length && currentRowIndex++;
     });
 
-    targetStepLayout.layout = layout;
+    destinationContainerLayout.layout = layout;
     return data;
 };

packages/app-form-builder/src/admin/components/FormEditor/Context/functions/getContainerLayout.ts

@@ -0,0 +1,31 @@
+import { FbFormModel, FbFormStep, DropDestination, DropSource } from "~/types";
+
+interface ContainerLayoutParams {
+    data: FbFormModel;
+    destination: DropDestination;
+    source: DropSource;
+}
+/*
+    This is a helper function that gets layout from the container based on its type.
+    * If "source" or "destination" is Condition Group then it would take layout from the settings of the Condition Group field.
+    * If "source" or "destination" is Step that it would take layout from the step itself.
+*/
+export default (params: ContainerLayoutParams) => {
+    const { data, destination, source } = params;
+
+    const sourceContainer =
+        source.containerType === "conditionGroup"
+            ? (data.fields.find(field => field._id === source.containerId)?.settings as FbFormStep)
+            : (data.steps.find(step => step.id === source.containerId) as FbFormStep);
+
+    const destinationContainer =
+        destination.containerType === "conditionGroup"
+            ? (data.fields.find(field => field._id === destination.containerId)
+                  ?.settings as FbFormStep)
+            : (data.steps.find(step => step.id === destination.containerId) as FbFormStep);
+
+    return {
+        sourceContainer,
+        destinationContainer
+    };
+};

packages/app-form-builder/src/admin/components/FormEditor/Context/functions/handleDeleteConditionGroup.ts

@@ -0,0 +1,55 @@
+import { FbFormModelField, FbFormStep, FbFormModel } from "~/types";
+
+import { deleteField } from "./index";
+
+interface DeleteConditionGroupParams {
+    data: FbFormModel;
+    formStep: FbFormStep;
+    stepFields: FbFormModelField[];
+    conditionGroup: FbFormModelField;
+    conditionGroupFields: FbFormModelField[];
+}
+/*
+    When we delete condition group we also need to delete fields inside of it,
+    because those fields belong directly (they are being stored in the setting of the condition group) to the condition group and not the step.
+*/
+export default (params: DeleteConditionGroupParams) => {
+    const { data, formStep, stepFields, conditionGroup, conditionGroupFields } = params;
+
+    const deleteConditionGroup = () => {
+        const layout = stepFields.map(field => {
+            if (field._id === conditionGroup._id) {
+                deleteField({
+                    field,
+                    data,
+                    containerType: "step",
+                    containerId: formStep.id
+                });
+                return;
+            } else {
+                return field;
+            }
+        });
+
+        return layout;
+    };
+
+    const deleteConditionGroupFields = () => {
+        const layout = conditionGroupFields.map(field => {
+            if (!conditionGroup._id) {
+                return;
+            }
+            deleteField({
+                field,
+                data,
+                containerType: "conditionGroup",
+                containerId: conditionGroup._id
+            });
+        });
+
+        return layout;
+    };
+    deleteConditionGroupFields();
+
+    deleteConditionGroup();
+};

packages/app-form-builder/src/admin/components/FormEditor/Context/functions/handleMoveField.ts

@@ -14,17 +14,18 @@ export default ({ data, field, target, source, destination }: HandleMoveField) =
     if (source.containerId === destination.containerId) {
         // This condition should cover:
         // 1. When we move field in scope of one Step;
-        // 2. When we move field in scope of one Condition Group (Condition Group yet to be implemented).
+        // 2. When we move field in scope of one Condition Group.
         moveField({
             field,
             data,
             target,
-            destination
+            destination,
+            source
         });
     } else {
         // This condition should cover:
         // 1. When we move field in scope of two different Steps;
-        // 2. When we move field in scope of two different Condition Groups (Condition Group yet to be implemented).
+        // 2. When we move field in scope of two different Condition Groups.
         moveFieldBetween({
             data,
             field,

packages/app-form-builder/src/admin/components/FormEditor/Context/functions/handleMoveField/getFieldPosition.ts

@@ -1,17 +1,17 @@
-import { FbFormModelField, FieldIdType, FieldLayoutPositionType, FbFormStep } from "~/types";
+import { FbFormModelField, FieldIdType, FieldLayoutPositionType } from "~/types";
 
 interface GetFieldPositionResult extends Omit<FieldLayoutPositionType, "index"> {
     index: number;
 }
 interface GetFieldPositionParams {
     field: FbFormModelField | FieldIdType;
-    data: FbFormStep;
+    layout: string[][];
 }
 
-export default ({ field, data }: GetFieldPositionParams): GetFieldPositionResult | null => {
+export default ({ field, layout }: GetFieldPositionParams): GetFieldPositionResult | null => {
     const id = typeof field === "string" ? field : field._id;
-    for (let rowIndex = 0; rowIndex < data.layout.length; rowIndex++) {
-        const row = data.layout[rowIndex];
+    for (let rowIndex = 0; rowIndex < layout.length; rowIndex++) {
+        const row = layout[rowIndex];
         for (let fieldIndex = 0; fieldIndex < row.length; fieldIndex++) {
             if (row[fieldIndex] !== id) {
                 continue;