From b1f05fa57c862ce8219e5ca464e794353261f842 Mon Sep 17 00:00:00 2001
From: ks129 <45097959+ks129@users.noreply.github.com>
Date: Sun, 21 Feb 2021 07:35:29 +0200
Subject: Migrate from public state map to Redux

---
 src/App.tsx                            |   4 +-
 src/components/InputTypes/Checkbox.tsx |   7 +-
 src/components/InputTypes/Select.tsx   |  40 +++++++--
 src/components/InputTypes/index.tsx    |  13 +--
 src/components/Question.tsx            | 153 ++++++++++++++++++++-------------
 src/pages/FormPage.tsx                 |  38 +++++---
 src/store/form/actions.ts              |  79 +++++++++++++++++
 src/store/form/reducers.ts             |  29 +++++++
 src/store/form/store.ts                |   4 +
 src/store/form/types.ts                |   5 ++
 10 files changed, 285 insertions(+), 87 deletions(-)
 create mode 100644 src/store/form/actions.ts
 create mode 100644 src/store/form/reducers.ts
 create mode 100644 src/store/form/store.ts
 create mode 100644 src/store/form/types.ts

diff --git a/src/App.tsx b/src/App.tsx
index 523e583..14e5329 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -3,6 +3,7 @@
 import React, { Suspense } from "react";
 import { jsx, css, Global } from "@emotion/react";
 
+import { Provider } from "react-redux";
 import {
     BrowserRouter as Router,
     Route,
@@ -14,6 +15,7 @@ import { PropagateLoader } from "react-spinners";
 import { CSSTransition, TransitionGroup } from "react-transition-group";
 
 import globalStyles from "./globalStyles";
+import { store } from "./store/form/store";
 
 const LandingPage = React.lazy(() => import("./pages/LandingPage"));
 const FormPage = React.lazy(() => import("./pages/FormPage"));
@@ -51,7 +53,7 @@ function App(): JSX.Element {
                                 {routes.map(({path, Component}) => (
                                     <Route exact key={path} path={path}>
                                         <Suspense fallback={<PageLoading/>}>
-                                            <Component/>
+                                            {path == "/form/:id" ? <Provider store={store}><Component/></Provider> : <Component/>}
                                         </Suspense>
                                     </Route>
                                 ))}
diff --git a/src/components/InputTypes/Checkbox.tsx b/src/components/InputTypes/Checkbox.tsx
index 3093caf..b3130c6 100644
--- a/src/components/InputTypes/Checkbox.tsx
+++ b/src/components/InputTypes/Checkbox.tsx
@@ -3,6 +3,8 @@ import { jsx, css } from "@emotion/react";
 import React, { ChangeEvent } from "react";
 import colors from "../../colors";
 import { multiSelectInput, hiddenInput } from "../../commonStyles";
+import {useSelector} from "react-redux";
+import {FormState} from "../../store/form/types";
 
 interface CheckboxProps {
     index: number,
@@ -53,10 +55,13 @@ const activeStyles = css`
 `;
 
 export default function Checkbox(props: CheckboxProps): JSX.Element {
+    const values = useSelector<FormState, FormState["values"]>(
+        state => state.values
+    );
     return (
         <label css={[generalStyles, activeStyles]}>
             <label className="unselected" css={multiSelectInput}>
-                <input type="checkbox" value={props.option} css={hiddenInput} name={`${("000" + props.index).slice(-4)}. ${props.option}`} onChange={props.handler}/>
+                <input type="checkbox" value={props.option} css={hiddenInput} name={`${("000" + props.index).slice(-4)}. ${props.option}`} onChange={props.handler} checked={!!values.get(`${("000" + props.index).slice(-4)}. ${props.option}`)}/>
                 <span className="checkmark"/>
             </label>
             {props.option}<br/>
diff --git a/src/components/InputTypes/Select.tsx b/src/components/InputTypes/Select.tsx
index 2d0187a..c0f5425 100644
--- a/src/components/InputTypes/Select.tsx
+++ b/src/components/InputTypes/Select.tsx
@@ -1,13 +1,26 @@
 /** @jsx jsx */
 import { jsx, css } from "@emotion/react";
 import React from "react";
+import { connect } from "react-redux";
+
 import { hiddenInput, invalidStyles } from "../../commonStyles";
+import { Question } from "../../api/question";
+import { setValue, SetValueAction } from "../../store/form/actions";
+import { FormState } from "../../store/form/types";
 
 interface SelectProps {
     options: Array<string>,
-    state_dict: Map<string, string | boolean | null>,
     valid: boolean,
-    onBlurHandler: () => void
+    onBlurHandler: () => void,
+    question: Question
+}
+
+interface SelectStateProps {
+    values: Map<string, string | Map<string, boolean> | null>
+}
+
+interface SelectDispatchProps {
+    setValue: (question: Question, value: string | Map<string, boolean> | null) => SetValueAction
 }
 
 const containerStyles = css`
@@ -143,7 +156,7 @@ const optionStyles = css`
   }
 `;
 
-class Select extends React.Component<SelectProps> {
+class Select extends React.Component<SelectProps & SelectStateProps & SelectDispatchProps> {
     handler(selected_option: React.RefObject<HTMLDivElement>, event: React.ChangeEvent<HTMLInputElement>): void {
         const option_container = event.target.parentElement;
         if (!option_container || !option_container.parentElement || !selected_option.current) {
@@ -151,7 +164,7 @@ class Select extends React.Component<SelectProps> {
         }
 
         // Update stored value
-        this.props.state_dict.set("value", option_container.textContent);
+        this.props.setValue(this.props.question, option_container.textContent);
 
         // Close the menu
         selected_option.current.focus();
@@ -178,10 +191,10 @@ class Select extends React.Component<SelectProps> {
     }
 
     focusOption(): void {
-        if (!this.props.state_dict.get("value")) {
-            this.props.state_dict.set("value", "temporary");
+        if (!this.props.values.get(this.props.question.id)) {
+            this.props.setValue(this.props.question, "temporary");
             this.props.onBlurHandler();
-            this.props.state_dict.set("value", null);
+            this.props.setValue(this.props.question, null);
         }
     }
 
@@ -211,4 +224,15 @@ class Select extends React.Component<SelectProps> {
     }
 }
 
-export default Select;
+const mapStateToProps = (state: FormState, ownProps: SelectProps): SelectProps & SelectStateProps => {
+    return {
+        ...ownProps,
+        values: state.values
+    };
+};
+
+const mapDispatchToProps = {
+    setValue
+};
+
+export default connect(mapStateToProps, mapDispatchToProps)(Select);
diff --git a/src/components/InputTypes/index.tsx b/src/components/InputTypes/index.tsx
index bc65248..e816c9c 100644
--- a/src/components/InputTypes/index.tsx
+++ b/src/components/InputTypes/index.tsx
@@ -6,10 +6,10 @@ import Select from "./Select";
 import ShortText from "./ShortText";
 import TextArea from "./TextArea";
 
-import React, { ChangeEvent } from "react";
+import React, {ChangeEvent} from "react";
 
-import { QuestionType } from "../../api/question";
-import { QuestionProp } from "../Question";
+import {QuestionType} from "../../api/question";
+import {QuestionDispatchProp, QuestionProp, QuestionStateProp} from "../Question";
 
 const require_options: Array<QuestionType> = [
     QuestionType.Radio,
@@ -19,14 +19,15 @@ const require_options: Array<QuestionType> = [
 ];
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
-export default function create_input({ question, public_state }: QuestionProp, handler: (event: ChangeEvent<HTMLInputElement | HTMLTextAreaElement>) => void, onBlurHandler: () => void, focus_ref: React.RefObject<any>): JSX.Element | JSX.Element[] {
+export default function create_input(props: QuestionProp & QuestionStateProp & QuestionDispatchProp, handler: (event: ChangeEvent<HTMLInputElement | HTMLTextAreaElement>) => void, onBlurHandler: () => void, focus_ref: React.RefObject<any>): JSX.Element | JSX.Element[] {
     let result: JSX.Element | JSX.Element[];
+    const question = props.question;
 
     // eslint-disable-next-line
     // @ts-ignore
     let options: string[] = question.data["options"];
     let valid = true;
-    if (!public_state.get("valid")) {
+    if (!props.valid.get(question.id)) {
         valid = false;
     }
 
@@ -51,7 +52,7 @@ export default function create_input({ question, public_state }: QuestionProp, h
             break;
 
         case QuestionType.Select:
-            result = <Select options={options} state_dict={public_state} valid={valid} onBlurHandler={onBlurHandler}/>;
+            result = <Select options={options} question={question} valid={valid} onBlurHandler={onBlurHandler}/>;
             break;
 
         case QuestionType.ShortText:
diff --git a/src/components/Question.tsx b/src/components/Question.tsx
index 0af745e..74c4a71 100644
--- a/src/components/Question.tsx
+++ b/src/components/Question.tsx
@@ -1,11 +1,14 @@
 /** @jsx jsx */
 import { jsx, css } from "@emotion/react";
 import React, { ChangeEvent } from "react";
+import { connect } from "react-redux";
 
 import { Question, QuestionType } from "../api/question";
 import { selectable } from "../commonStyles";
 import create_input from "./InputTypes";
 import ErrorMessage from "./ErrorMessage";
+import { FormState } from "../store/form/types";
+import { setError, SetErrorAction, setValid, SetValidAction, setValue, SetValueAction } from "../store/form/actions";
 
 const skip_normal_state: Array<QuestionType> = [
     QuestionType.Radio,
@@ -17,14 +20,25 @@ const skip_normal_state: Array<QuestionType> = [
 
 export type QuestionProp = {
     question: Question,
-    public_state: Map<string, string | boolean | null>,
     scroll_ref: React.RefObject<HTMLDivElement>,
     // eslint-disable-next-line @typescript-eslint/no-explicit-any
     focus_ref: React.RefObject<any>
 }
 
-class RenderedQuestion extends React.Component<QuestionProp> {
-    constructor(props: QuestionProp) {
+export type QuestionStateProp = {
+    values: Map<string, string | Map<string, boolean> | null>,
+    errors: Map<string, string>,
+    valid: Map<string, boolean>,
+};
+
+export type QuestionDispatchProp = {
+    setValue: (question: Question, value: string | Map<string, boolean> | null) => SetValueAction,
+    setValid: (question: Question, valid: boolean) => SetValidAction,
+    setError: (question: Question, error: string) => SetErrorAction
+};
+
+export class RenderedQuestion extends React.Component<QuestionProp & QuestionStateProp & QuestionDispatchProp> {
+    constructor(props: QuestionProp & QuestionStateProp & QuestionDispatchProp) {
         super(props);
         if (props.question.type === QuestionType.TextArea) {
             this.handler = this.text_area_handler.bind(this);
@@ -33,47 +47,39 @@ class RenderedQuestion extends React.Component<QuestionProp> {
         }
         this.blurHandler = this.blurHandler.bind(this);
 
-        this.setPublicState("valid", true);
-        this.setPublicState("error", "");
+        props.setValid(props.question, true);
+        props.setError(props.question, "");
 
         if (!skip_normal_state.includes(props.question.type)) {
-            this.setPublicState("value", "");
+            props.setValue(props.question, "");
         }
     }
 
-    setPublicState(target: string, value: string | boolean | null, callback?:() => void): void {
-        this.setState({[target]: value}, callback);
-        this.props.public_state.set(target, value);
-    }
-
     // This is here to allow dynamic selection between the general handler, and the textarea handler.
     handler(_: ChangeEvent<HTMLInputElement | HTMLTextAreaElement>): void {} // eslint-disable-line
 
     blurHandler(): void {
         if (this.props.question.required) {
-            if (!this.props.public_state.get("value")) {
-                this.setPublicState("error", "Field must be filled.");
-                this.setPublicState("valid", false);
+            if (!this.props.values.get(this.props.question.id)) {
+                this.props.setError(this.props.question, "Field must be filled.");
+                this.props.setValid(this.props.question, false);
             } else {
-                this.setPublicState("error", "");
-                this.setPublicState("valid", true);
+                this.props.setError(this.props.question, "");
+                this.props.setValid(this.props.question, true);
             }
         }
     }
 
     normal_handler(event: ChangeEvent<HTMLInputElement>): void {
-        let target: string;
-        let value: string | boolean;
+        let value: string | [string, boolean];
 
         switch (event.target.type) {
             case "checkbox":
-                target = event.target.name;
-                value = event.target.checked;
+                value = [event.target.name, event.target.checked];
                 break;
 
             case "radio":
-            // This handles radios and ranges, as they are both based on the same fundamental input type
-                target = "value";
+                // This handles radios and ranges, as they are both based on the same fundamental input type
                 if (event.target.parentElement) {
                     value = event.target.parentElement.innerText.trimEnd();
                 } else {
@@ -82,11 +88,19 @@ class RenderedQuestion extends React.Component<QuestionProp> {
                 break;
 
             default:
-                target = "value";
                 value = event.target.value;
         }
 
-        this.setPublicState(target, value);
+        if (value instanceof Array) {
+            let values = this.props.values.get(this.props.question.id);
+            if (!(values instanceof Map)) {
+                values = new Map<string, boolean>();
+            }
+            values.set(value[0], value[1]);
+            this.props.setValue(this.props.question, values);
+        } else {
+            this.props.setValue(this.props.question, value);
+        }
 
         // Toggle checkbox class
         if (event.target.type == "checkbox" && event.target.parentElement !== null) {
@@ -97,7 +111,7 @@ class RenderedQuestion extends React.Component<QuestionProp> {
         const options: string | string[] = this.props.question.data["options"];
         switch (event.target.type) {
             case "text":
-                this.setPublicState("valid", true);
+                this.props.setValid(this.props.question, true);
                 break;
 
             case "checkbox":
@@ -107,29 +121,30 @@ class RenderedQuestion extends React.Component<QuestionProp> {
                     options.forEach((val, index) => {
                         keys.push(`${("000" + index).slice(-4)}. ${val}`);
                     });
-                    if (keys.every(v => !this.props.public_state.get(v))) {
-                        this.setPublicState("error", "Field must be filled.");
-                        this.setPublicState("valid", false);
+                    const values = this.props.values.get(this.props.question.id);
+                    if (values instanceof Map && keys.every(v => !values.get(v))) {
+                        this.props.setError(this.props.question, "Field must be filled.");
+                        this.props.setValid(this.props.question, false);
                     } else {
-                        this.setPublicState("error", "");
-                        this.setPublicState("valid", true);
+                        this.props.setError(this.props.question, "");
+                        this.props.setValid(this.props.question, true);
                     }
                 }
                 break;
 
             case "radio":
-                this.setPublicState("valid", true);
-                this.setPublicState("error", "");
+                this.props.setError(this.props.question, "");
+                this.props.setValid(this.props.question, true);
                 break;
         }
     }
 
     text_area_handler(event: ChangeEvent<HTMLTextAreaElement>): void {
         // We will validate again when focusing out.
-        this.setPublicState("valid", true);
-        this.setPublicState("error", "");
+        this.props.setError(this.props.question, "");
+        this.props.setValid(this.props.question, true);
 
-        this.setPublicState("value", event.target.value);
+        this.props.setValue(this.props.question, event.target.value);
     }
 
     validateField(): void {
@@ -142,7 +157,7 @@ class RenderedQuestion extends React.Component<QuestionProp> {
         switch (this.props.question.type) {
             case QuestionType.TextArea:
             case QuestionType.ShortText:
-                if (this.props.public_state.get("value") === "") {
+                if (this.props.values.get(this.props.question.id) === "") {
                     invalid = true;
                 }
                 break;
@@ -150,7 +165,7 @@ class RenderedQuestion extends React.Component<QuestionProp> {
             case QuestionType.Select:
             case QuestionType.Range:
             case QuestionType.Radio:
-                if (!this.props.public_state.get("value")) {
+                if (!this.props.values.get(this.props.question.id)) {
                     invalid = true;
                 }
                 break;
@@ -161,7 +176,8 @@ class RenderedQuestion extends React.Component<QuestionProp> {
                     options.forEach((val, index) => {
                         keys.push(`${("000" + index).slice(-4)}. ${val}`);
                     });
-                    if (keys.every(v => !this.props.public_state.get(v))) {
+                    const values = this.props.values.get(this.props.question.id);
+                    if (values instanceof Map && keys.every(v => !values.get(v))) {
                         invalid = true;
                     }
                 }
@@ -169,36 +185,36 @@ class RenderedQuestion extends React.Component<QuestionProp> {
         }
 
         if (invalid) {
-            this.setPublicState("error", "Field must be filled.");
-            this.setPublicState("valid", false);
+            this.props.setError(this.props.question, "Field must be filled.");
+            this.props.setValid(this.props.question, false);
         } else {
-            this.setPublicState("error", "");
-            this.setPublicState("valid", true);
+            this.props.setError(this.props.question, "");
+            this.props.setValid(this.props.question, true);
         }
     }
 
     componentDidMount(): void {
         // Initialize defaults for complex and nested fields
         const options: string | string[] = this.props.question.data["options"];
+        const values = this.props.values.get(this.props.question.id);
 
-        if (this.props.public_state.size === 0) {
-            switch (this.props.question.type) {
-                case QuestionType.Checkbox:
-                    if (typeof options === "string") {
-                        return;
-                    }
+        switch (this.props.question.type) {
+            case QuestionType.Checkbox:
+                if (typeof options === "string" || !(values instanceof Map)) {
+                    return;
+                }
 
-                    options.forEach((option, index) => {
-                        this.setPublicState(`${("000" + index).slice(-4)}. ${option}`, false);
-                    });
-                    break;
+                options.forEach((option, index) => {
+                    values.set(`${("000" + index).slice(-4)}. ${option}`, false);
+                });
+                this.props.setValue(this.props.question, values);
+                break;
 
-                case QuestionType.Range:
-                case QuestionType.Radio:
-                case QuestionType.Select:
-                    this.setPublicState("value", null);
-                    break;
-            }
+            case QuestionType.Range:
+            case QuestionType.Radio:
+            case QuestionType.Select:
+                this.props.setValue(this.props.question, null);
+                break;
         }
     }
 
@@ -250,10 +266,10 @@ class RenderedQuestion extends React.Component<QuestionProp> {
               }
             `;
             let valid = true;
-            if (!this.props.public_state.get("valid")) {
+            if (!this.props.valid.get(this.props.question.id)) {
                 valid = false;
             }
-            const rawError = this.props.public_state.get("error");
+            const rawError = this.props.errors.get(this.props.question.id);
             let error = "";
             if (typeof rawError === "string") {
                 error = rawError;
@@ -271,4 +287,19 @@ class RenderedQuestion extends React.Component<QuestionProp> {
     }
 }
 
-export default RenderedQuestion;
+const mapStateToProps = (state: FormState, ownProps: QuestionProp): QuestionProp & QuestionStateProp => {
+    return {
+        ...ownProps,
+        values: state.values,
+        errors: state.errors,
+        valid: state.valid
+    };
+};
+
+const mapDispatchToProps = {
+    setValue,
+    setValid,
+    setError
+};
+
+export default connect(mapStateToProps, mapDispatchToProps, null, { forwardRef: true })(RenderedQuestion);
diff --git a/src/pages/FormPage.tsx b/src/pages/FormPage.tsx
index 1e331b9..e9306e3 100644
--- a/src/pages/FormPage.tsx
+++ b/src/pages/FormPage.tsx
@@ -5,9 +5,10 @@ import { Link } from "react-router-dom";
 import React, { SyntheticEvent, useEffect, useState, createRef } from "react";
 import { useParams } from "react-router";
 import { PropagateLoader } from "react-spinners";
+import { useDispatch, useSelector } from "react-redux";
 
 import HeaderBar from "../components/HeaderBar";
-import RenderedQuestion from "../components/Question";
+import ConnectedRenderedQuestion, { RenderedQuestion } from "../components/Question";
 import Loading from "../components/Loading";
 import ScrollToTop from "../components/ScrollToTop";
 
@@ -16,6 +17,8 @@ import colors from "../colors";
 import { unselectable }  from "../commonStyles";
 import { Question, QuestionType } from "../api/question";
 import ApiClient from "../api/client";
+import { FormState } from "../store/form/types";
+import { clean } from "../store/form/actions";
 
 interface PathParams {
     id: string
@@ -157,11 +160,21 @@ const closedHeaderStyles = css`
 function FormPage(): JSX.Element {
     const { id } = useParams<PathParams>();
 
+    const valid = useSelector<FormState, FormState["valid"]>(
+        state => state.valid
+    );
+    const values = useSelector<FormState, FormState["values"]>(
+        state => state.values
+    );
+
+    const dispatch = useDispatch();
+
     const [form, setForm] = useState<Form>();
     const [sending, setSending] = useState<boolean>();
     const [sent, setSent] = useState<boolean>();
 
     useEffect(() => {
+        dispatch(clean());
         getForm(id).then(form => {
             setForm(form);
         });
@@ -203,7 +216,7 @@ function FormPage(): JSX.Element {
         const questionRef = createRef<RenderedQuestion>();
         refMap.set(question.id, questionRef);
         // eslint-disable-next-line @typescript-eslint/no-explicit-any
-        return <RenderedQuestion ref={questionRef} focus_ref={createRef<any>()} scroll_ref={createRef<HTMLDivElement>()} question={question} public_state={new Map()} key={index + Date.now()}/>;
+        return <ConnectedRenderedQuestion ref={questionRef} focus_ref={createRef<any>()} scroll_ref={createRef<HTMLDivElement>()} question={question} key={index + Date.now()}/>;
     });
 
     async function handleSubmit(event: SyntheticEvent) {
@@ -220,8 +233,8 @@ function FormPage(): JSX.Element {
             if (questionRef && questionRef.current) {
                 questionRef.current.validateField();
             }
-            // In case when field is invalid, add this to invalid fields list.
-            if (prop.props.public_state.get("valid") === false) {
+            // In case when field is invalid, add this to invalid fields list
+            if (valid.get(question.id) === false) {
                 invalidFieldIDs.push(i);
             }
         });
@@ -257,22 +270,27 @@ function FormPage(): JSX.Element {
 
                 case QuestionType.Checkbox: {
                     if (typeof options !== "string") {
+                        console.log(values);
+                        const checkbox_values = values.get(question.id);
+                        console.log(checkbox_values);
                         const keys: Map<string, string> = new Map();
                         options.forEach((val: string, index) => {
                             keys.set(val, `${("000" + index).slice(-4)}. ${val}`);
                         });
-                        const pairs: { [key: string]: boolean } = { };
-                        keys.forEach((val, key) => {
-                            pairs[key] = !!prop.props.public_state.get(val);
-                        });
-                        answers[question.id] = pairs;
+                        if (checkbox_values instanceof Map) {
+                            const pairs: { [key: string]: boolean } = { };
+                            keys.forEach((val, key) => {
+                                pairs[key] = !!checkbox_values.get(val);
+                            });
+                            answers[question.id] = pairs;
+                        }
                     }
                     break;
                 }
 
                 case QuestionType.Code:
                 default:
-                    answers[question.id] = prop.props.public_state.get("value");
+                    answers[question.id] = values.get(question.id);
             }
         });
 
diff --git a/src/store/form/actions.ts b/src/store/form/actions.ts
new file mode 100644
index 0000000..8b48a37
--- /dev/null
+++ b/src/store/form/actions.ts
@@ -0,0 +1,79 @@
+import { Question } from "../../api/question";
+
+// All Redux actions that can be triggered
+export enum FormAction {
+    SET_VALUE = "SET_VALUE",
+    SET_ERROR = "SET_ERROR",
+    SET_VALID = "SET_VALID",
+    CLEAN = "CLEAN"
+}
+
+// This is base for all actions
+export interface DefaultFormAction {
+    type: FormAction
+}
+
+// Return values for actions
+export interface SetValueAction extends DefaultFormAction {
+    type: FormAction.SET_VALUE,
+    payload: {
+        question: Question,
+        value: string | Map<string, boolean> | null
+    }
+}
+
+export interface SetErrorAction extends DefaultFormAction {
+    type: FormAction.SET_ERROR,
+    payload: {
+        question: Question,
+        error: string
+    }
+}
+
+export interface SetValidAction extends DefaultFormAction {
+    type: FormAction.SET_VALID,
+    payload: {
+        question: Question,
+        valid: boolean
+    }
+}
+
+export interface CleanAction extends DefaultFormAction {
+    type: FormAction.CLEAN
+}
+
+export type Action = SetValueAction | SetErrorAction | SetValidAction | CleanAction;
+
+export function setValue(question: Question, value: string | Map<string, boolean> | null): SetValueAction {
+    return {
+        type: FormAction.SET_VALUE,
+        payload: {
+            question: question,
+            value: value
+        }
+    };
+}
+
+export function setError(question: Question, error: string): SetErrorAction {
+    return {
+        type: FormAction.SET_ERROR,
+        payload: {
+            question: question,
+            error: error
+        }
+    };
+}
+
+export function setValid(question: Question, valid: boolean): SetValidAction {
+    return {
+        type: FormAction.SET_VALID,
+        payload: {
+            question: question,
+            valid: valid
+        }
+    };
+}
+
+export function clean(): CleanAction {
+    return { type: FormAction.CLEAN };
+}
diff --git a/src/store/form/reducers.ts b/src/store/form/reducers.ts
new file mode 100644
index 0000000..fcbb33a
--- /dev/null
+++ b/src/store/form/reducers.ts
@@ -0,0 +1,29 @@
+import {Action, FormAction} from "./actions";
+import {FormState} from "./types";
+
+export const initialState: FormState = {
+    values: new Map(),
+    errors: new Map(),
+    valid: new Map()
+};
+
+export function formReducer(state = initialState, action: Action): FormState {
+    const new_state = state;
+    switch (action.type) {
+        case FormAction.SET_VALUE:
+            new_state.values.set(action.payload.question.id, action.payload.value);
+            break;
+
+        case FormAction.SET_ERROR:
+            new_state.errors.set(action.payload.question.id, action.payload.error);
+            break;
+
+        case FormAction.SET_VALID:
+            new_state.valid.set(action.payload.question.id, action.payload.valid);
+            break;
+
+        case FormAction.CLEAN:
+            return initialState;
+    }
+    return new_state;
+}
diff --git a/src/store/form/store.ts b/src/store/form/store.ts
new file mode 100644
index 0000000..4311a2f
--- /dev/null
+++ b/src/store/form/store.ts
@@ -0,0 +1,4 @@
+import { createStore } from "redux";
+import { formReducer } from "./reducers";
+
+export const store = createStore(formReducer);
diff --git a/src/store/form/types.ts b/src/store/form/types.ts
new file mode 100644
index 0000000..1d3e594
--- /dev/null
+++ b/src/store/form/types.ts
@@ -0,0 +1,5 @@
+export interface FormState {
+    values: Map<string, string | Map<string, boolean> | null>,
+    errors: Map<string, string>,
+    valid: Map<string, boolean>
+}
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