use flow

src/renderer/.flowconfig

@@ -12,6 +12,9 @@ flow-typed
 suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe
 suppress_comment=\\(.\\|\n\\)*\\$FlowIssue
 module.name_mapper='^constants\(.*\)$' -> '<PROJECT_ROOT>/js/constants\1'
+module.name_mapper='^util\(.*\)$' -> '<PROJECT_ROOT>/js/util\1'
 module.name_mapper='^redux\(.*\)$' -> '<PROJECT_ROOT>/js/redux\1'
+module.name_mapper='^types\(.*\)$' -> '<PROJECT_ROOT>/js/types\1'
+module.name_mapper='^component\(.*\)$' -> '<PROJECT_ROOT>/js/component\1'
 
 [strict]

src/renderer/flow-typed/bluebird.js

@@ -0,0 +1,3 @@
+declare module 'bluebird' {
+  declare module.exports: any;
+}

src/renderer/flow-typed/classnames.js

@@ -0,0 +1,3 @@
+declare module 'classnames' {
+  declare module.exports: any;
+}

src/renderer/flow-typed/formik.js

@@ -0,0 +1,3 @@
+declare module 'formik' {
+  declare module.exports: any;
+}

src/renderer/flow-typed/i18n.js

@@ -0,0 +1 @@
+declare function __(a: string): string;

src/renderer/flow-typed/qrcode.react.js

@@ -0,0 +1,3 @@
+declare module 'qrcode.react' {
+  declare module.exports: any;
+}

src/renderer/flow-typed/shapeshift.io.js

@@ -0,0 +1,3 @@
+declare module 'shapeshift.io' {
+  declare module.exports: any;
+}

src/renderer/js/component/shapeShift/internal/active-shift.jsx

@@ -1,12 +1,27 @@
-import React, { PureComponent } from "react";
+// @flow
+import * as React from "react";
 import QRCode from "qrcode.react";
 import * as statuses from "constants/shape_shift";
 import Address from "component/address";
 import Link from "component/link";
+import type { Dispatch } from "redux/actions/shape_shift";
 
-export default class ActiveShapeShift extends PureComponent {
+type Props = {
+  shiftState: ?string,
+  shiftCoinType: ?string,
+  shiftDepositAddress: ?string,
+  shiftReturnAddress: ?string,
+  shiftOrderId: ?string,
+  originCoinDepositMax: ?number,
+  clearShapeShift: Dispatch,
+  doShowSnackBar: Dispatch,
+  getActiveShift: Dispatch,
+};
+
+class ActiveShapeShift extends React.PureComponent<Props> {
   constructor() {
     super();
+    // $FlowFixMe
     this.continousFetch = undefined;
   }
 
@@ -14,12 +29,13 @@ export default class ActiveShapeShift extends PureComponent {
     const { getActiveShift, shiftDepositAddress } = this.props;
 
     getActiveShift(shiftDepositAddress);
+    // $FlowFixMe
     this.continousFetch = setInterval(() => {
       getActiveShift(shiftDepositAddress);
     }, 10000);
   }
 
-  componentWillUpdate(nextProps) {
+  componentWillUpdate(nextProps: Props) {
     const { shiftState } = nextProps;
     if (shiftState === statuses.COMPLETE) {
       this.clearContinuousFetch();
@@ -31,7 +47,9 @@ export default class ActiveShapeShift extends PureComponent {
   }
 
   clearContinuousFetch() {
+    /// $FlowFixMe
     clearInterval(this.continousFetch);
+    // $FlowFixMe
     this.continousFetch = null;
   }
 
@@ -42,7 +60,7 @@ export default class ActiveShapeShift extends PureComponent {
       shiftReturnAddress,
       shiftOrderId,
       shiftState,
-      shiftDepositLimit,
+      originCoinDepositMax,
       clearShapeShift,
       doShowSnackBar,
     } = this.props;
@@ -54,7 +72,7 @@ export default class ActiveShapeShift extends PureComponent {
             <p>
               Send up to{" "}
               <span className="credit-amount--bold">
-                {shiftDepositLimit}{" "}
+                {originCoinDepositMax}{" "}
                 <span className="credit-amount--colored">{shiftCoinType}</span>
               </span>{" "}
               to the address below.
@@ -102,13 +120,15 @@ export default class ActiveShapeShift extends PureComponent {
                 : __("Cancel")
             }
           />
-          <span className="shapeshift__link">
-            <Link
-              button="text"
-              label={__("View the status on Shapeshift.io")}
-              href={`https://shapeshift.io/#/status/${shiftOrderId}`}
-            />
-          </span>
+          {shiftOrderId && (
+            <span className="shapeshift__link">
+              <Link
+                button="text"
+                label={__("View the status on Shapeshift.io")}
+                href={`https://shapeshift.io/#/status/${shiftOrderId}`}
+              />
+            </span>
+          )}
           {shiftState === statuses.NO_DEPOSITS &&
             shiftReturnAddress && (
               <div className="shapeshift__actions-help">
@@ -123,3 +143,5 @@ export default class ActiveShapeShift extends PureComponent {
     );
   }
 }
+
+export default ActiveShapeShift;

src/renderer/js/component/shapeShift/internal/form.jsx

@@ -2,25 +2,48 @@ import React from "react";
 import Link from "component/link";
 import { getExampleAddress } from "util/shape_shift";
 import { Submit, FormRow } from "component/form";
+import type { ShapeShiftFormValues, Dispatch } from "redux/actions/shape_shift";
 
-export default ({
-  values,
-  errors,
-  touched,
-  handleChange,
-  handleBlur,
-  handleSubmit,
-  resetForm,
-  isSubmitting,
-  shiftSupportedCoins,
-  originCoin,
-  updating,
-  getCoinStats,
-  receiveAddress,
-  originCoinDepositMax,
-  originCoinDepositMin,
-  originCoinDepositFee,
-}) => {
+type ShapeShiftFormErrors = {
+  returnAddress?: string,
+};
+
+type Props = {
+  values: ShapeShiftFormValues,
+  errors: ShapeShiftFormErrors,
+  touched: boolean,
+  handleChange: Event => any,
+  handleBlur: Event => any,
+  handleSubmit: Event => any,
+  isSubmitting: boolean,
+  shiftSupportedCoins: Array<string>,
+  originCoin: string,
+  updating: boolean,
+  getCoinStats: Dispatch,
+  receiveAddress: string,
+  originCoinDepositFee: number,
+  originCoinDepositMin: string,
+  originCoinDepositMax: number,
+};
+
+export default (props: Props) => {
+  const {
+    values,
+    errors,
+    touched,
+    handleChange,
+    handleBlur,
+    handleSubmit,
+    isSubmitting,
+    shiftSupportedCoins,
+    originCoin,
+    updating,
+    getCoinStats,
+    receiveAddress,
+    originCoinDepositMax,
+    originCoinDepositMin,
+    originCoinDepositFee,
+  } = props;
   return (
     <form onSubmit={handleSubmit}>
       <div className="form-field">

src/renderer/js/component/shapeShift/view.jsx

@@ -1,4 +1,5 @@
-import React from "react";
+// @flow
+import * as React from "react";
 import { shell } from "electron";
 import { Formik } from "formik";
 import classnames from "classnames";
@@ -8,9 +9,23 @@ import Link from "component/link";
 import Spinner from "component/common/spinner";
 import { BusyMessage } from "component/common";
 import ShapeShiftForm from "./internal/form";
-import ActiveShift from "./internal/active-shift";
+import ActiveShapeShift from "./internal/active-shift";
 
-class ShapeShift extends React.PureComponent {
+import type { ShapeShiftState } from "redux/reducers/shape_shift";
+import type { Dispatch, ShapeShiftFormValues } from "redux/actions/shape_shift";
+
+type Props = {
+  shapeShift: ShapeShiftState,
+  getCoinStats: Dispatch,
+  createShapeShift: Dispatch,
+  clearShapeShift: Dispatch,
+  getActiveShift: Dispatch,
+  doShowSnackBar: Dispatch,
+  shapeShiftInit: Dispatch,
+  receiveAddress: string,
+};
+
+class ShapeShift extends React.PureComponent<Props> {
   componentDidMount() {
     const {
       shapeShiftInit,
@@ -49,11 +64,15 @@ class ShapeShift extends React.PureComponent {
       shiftReturnAddress,
       shiftCoinType,
       shiftOrderId,
-      cancelShapeShift,
       shiftState,
-      origin,
     } = shapeShift;
 
+    const initialFormValues: ShapeShiftFormValues = {
+      receiveAddress,
+      originCoin: "BTC",
+      returnAddress: "",
+    };
+
     return (
       // add the "shapeshift__intital-wrapper class so we can avoid content jumping once everything loads"
       // it just gives the section a min-height equal to the height of the content when the form is rendered
@@ -85,11 +104,7 @@ class ShapeShift extends React.PureComponent {
               <Formik
                 onSubmit={createShapeShift}
                 validate={validateShapeShiftForm}
-                initialValues={{
-                  receiveAddress,
-                  originCoin: "BTC",
-                  returnAddress: "",
-                }}
+                initialValues={initialFormValues}
                 render={formProps => (
                   <ShapeShiftForm
                     {...formProps}
@@ -106,12 +121,12 @@ class ShapeShift extends React.PureComponent {
               />
             )}
           {hasActiveShift && (
-            <ActiveShift
+            <ActiveShapeShift
               getActiveShift={getActiveShift}
               shiftCoinType={shiftCoinType}
               shiftReturnAddress={shiftReturnAddress}
               shiftDepositAddress={shiftDepositAddress}
-              shiftDepositLimit={originCoinDepositMax}
+              originCoinDepositMax={originCoinDepositMax}
               shiftOrderId={shiftOrderId}
               shiftState={shiftState}
               clearShapeShift={clearShapeShift}

src/renderer/js/redux/actions/shape_shift.js

@@ -1,11 +1,56 @@
-import { createAction } from "util/redux-utils";
+// @flow
 import Promise from "bluebird";
 import * as types from "constants/action_types";
 import { coinRegexPatterns } from "util/shape_shift";
+import type {
+  GetSupportedCoinsSuccess,
+  GetCoinStatsStart,
+  GetCoinStatsSuccess,
+  GetCoinStatsFail,
+  PrepareShapeShiftSuccess,
+  PrepareShapeShiftFail,
+  GetActiveShiftSuccess,
+  GetActiveShiftFail,
+} from "redux/reducers/shape_shift";
+import type { FormikActions } from "types/common";
 
+// use promise chains instead of callbacks for shapeshift api
 const shapeShift = Promise.promisifyAll(require("shapeshift.io"));
 
-export const shapeShiftInit = () => dispatch => {
+// All ShapeShift actions
+// Action types defined in the reducer will contain some payload
+export type Action =
+  | { type: types.GET_SUPPORTED_COINS_START }
+  | { type: types.GET_SUPPORTED_COINS_FAIL }
+  | GetSupportedCoinsSuccess
+  | GetCoinStatsStart
+  | { type: types.GET_COIN_STATS_START }
+  | GetCoinStatsFail
+  | GetCoinStatsSuccess
+  | { type: types.PREPARE_SHAPE_SHIFT_START }
+  | PrepareShapeShiftFail
+  | PrepareShapeShiftSuccess
+  | { type: types.GET_ACTIVE_SHIFT_START }
+  | GetActiveShiftFail
+  | GetActiveShiftSuccess;
+
+// Basic thunk types
+// It would be nice to import these from types/common
+// Not sure how that would work since they rely on the Action type
+type PromiseAction = Promise<Action>;
+type ThunkAction = (dispatch: Dispatch) => any;
+export type Dispatch = (
+  action: Action | ThunkAction | PromiseAction | Array<Action>
+) => any;
+
+// ShapeShift form values
+export type ShapeShiftFormValues = {
+  originCoin: string,
+  returnAddress: ?string,
+  receiveAddress: string,
+};
+
+export const shapeShiftInit = () => (dispatch: Dispatch): ThunkAction => {
   dispatch({ type: types.GET_SUPPORTED_COINS_START });
 
   return shapeShift
@@ -34,8 +79,9 @@ export const shapeShiftInit = () => dispatch => {
     );
 };
 
-export const getCoinStats = coin => dispatch => {
-  // TODO: get ShapeShift fee
+export const getCoinStats = (coin: string) => (
+  dispatch: Dispatch
+): ThunkAction => {
   const pair = `${coin.toLowerCase()}_lbc`;
 
   dispatch({ type: types.GET_COIN_STATS_START, data: coin });
@@ -48,7 +94,10 @@ export const getCoinStats = coin => dispatch => {
     .catch(err => dispatch({ type: types.GET_COIN_STATS_FAIL, data: err }));
 };
 
-export const createShapeShift = (values, actions) => dispatch => {
+export const createShapeShift = (
+  values: ShapeShiftFormValues,
+  actions: FormikActions
+) => (dispatch: Dispatch): ThunkAction => {
   const {
     originCoin,
     returnAddress,
@@ -68,12 +117,14 @@ export const createShapeShift = (values, actions) => dispatch => {
     )
     .catch(err => {
       dispatch({ type: types.PREPARE_SHAPE_SHIFT_FAIL, data: err });
-      // for formik
+      // for formik to stop the submit
       actions.setSubmitting(false);
     });
 };
 
-export const getActiveShift = depositAddress => dispatch => {
+export const getActiveShift = (depositAddress: string) => (
+  dispatch: Dispatch
+): ThunkAction => {
   dispatch({ type: types.GET_ACTIVE_SHIFT_START });
 
   return shapeShift
@@ -82,5 +133,5 @@ export const getActiveShift = depositAddress => dispatch => {
     .catch(err => dispatch({ type: types.GET_ACTIVE_SHIFT_FAIL, data: err }));
 };
 
-export const clearShapeShift = () => dispatch =>
+export const clearShapeShift = () => (dispatch: Dispatch): Action =>
   dispatch({ type: types.CLEAR_SHAPE_SHIFT });

src/renderer/js/redux/reducers/shape_shift.js

@@ -1,14 +1,88 @@
+// @flow
 import { handleActions } from "util/redux-utils";
-import * as types from "constants/action_types";
+import * as actions from "constants/action_types";
 import * as statuses from "constants/shape_shift";
 
-const defaultState = {
+export type ShapeShiftState = {
+  loading: boolean,
+  updating: boolean,
+  shiftSupportedCoins: Array<string>,
+  hasActiveShift: boolean,
+  originCoin: ?string,
+  error: ?string,
+  shiftDepositAddress: ?string,
+  shiftReturnAddress: ?string,
+  shiftCoinType: ?string,
+  shiftOrderId: ?string,
+  shiftState: ?string,
+  originCoinDepositMax: ?number,
+  // originCoinDepositMin is a string because we need to convert it from scientifc notation
+  // it will usually be something like 0.00000001 coins
+  // using Number(x) or parseInt(x) will either change it back to scientific notation or round to zero
+  originCoinDepositMin: ?string,
+  originCoinDepositFee: ?number,
+};
+
+// All ShapeShift actions that will have some payload
+export type GetSupportedCoinsSuccess = {
+  type: actions.GET_SUPPORTED_COINS_SUCCESS,
+  data: Array<string>,
+};
+export type GetCoinStatsStart = {
+  type: actions.GET_SUPPORTED_COINS_SUCCESS,
+  data: string,
+};
+export type GetCoinStatsSuccess = {
+  type: actions.GET_COIN_STATS_SUCCESS,
+  data: ShapeShiftMarketInfo,
+};
+export type GetCoinStatsFail = {
+  type: actions.GET_COIN_STATS_FAIL,
+  data: string,
+};
+export type PrepareShapeShiftSuccess = {
+  type: actions.PREPARE_SHAPE_SHIFT_SUCCESS,
+  data: ActiveShiftInfo,
+};
+export type PrepareShapeShiftFail = {
+  type: actions.PREPARE_SHAPE_SHIFT_FAIL,
+  data: ShapeShiftErrorResponse,
+};
+export type GetActiveShiftSuccess = {
+  type: actions.GET_ACTIVE_SHIFT_SUCCESS,
+  data: string,
+};
+export type GetActiveShiftFail = {
+  type: actions.GET_ACTIVE_SHIFT_FAIL,
+  data: ShapeShiftErrorResponse,
+};
+
+// ShapeShift sub-types
+// Defined for actions that contain an object in the payload
+type ShapeShiftMarketInfo = {
+  limit: number,
+  minimum: number,
+  minerFee: number,
+};
+
+type ActiveShiftInfo = {
+  deposit: string,
+  depositType: string,
+  returnAddress: string,
+  orderId: string,
+};
+
+type ShapeShiftErrorResponse = {
+  message: string,
+};
+
+const defaultState: ShapeShiftState = {
   loading: true,
   updating: false,
-  error: undefined,
   shiftSupportedCoins: [],
-  originCoin: undefined,
   hasActiveShift: false,
+  originCoin: undefined,
+  error: undefined,
   shiftDepositAddress: undefined, // shapeshift address to send your coins to
   shiftReturnAddress: undefined,
   shiftCoinType: undefined,
@@ -21,61 +95,108 @@ const defaultState = {
 
 export default handleActions(
   {
-    [types.GET_SUPPORTED_COINS_START]: () => ({
+    [actions.GET_SUPPORTED_COINS_START]: (
+      state: ShapeShiftState
+    ): ShapeShiftState => ({
+      ...state,
       loading: true,
       error: undefined,
     }),
-    [types.GET_SUPPORTED_COINS_SUCCESS]: (
-      state,
-      { data: shiftSupportedCoins }
-    ) => ({
-      error: undefined,
-      shiftSupportedCoins,
-    }),
-    [types.GET_SUPPORTED_COINS_FAIL]: () => ({
+    [actions.GET_SUPPORTED_COINS_SUCCESS]: (
+      state: ShapeShiftState,
+      action: GetSupportedCoinsSuccess
+    ): ShapeShiftState => {
+      const shiftSupportedCoins = action.data;
+      return {
+        ...state,
+        error: undefined,
+        shiftSupportedCoins,
+      };
+    },
+    [actions.GET_SUPPORTED_COINS_FAIL]: (
+      state: ShapeShiftState
+    ): ShapeShiftState => ({
+      ...state,
       loading: false,
-      error: true,
+      error: "Error getting available coins",
     }),
 
-    [types.GET_COIN_STATS_START]: (state, { data: coin }) => ({
-      updating: true,
-      originCoin: coin,
-    }),
-    [types.GET_COIN_STATS_SUCCESS]: (state, { data: marketInfo }) => ({
-      loading: false,
-      updating: false,
-      originCoinDepositMax: marketInfo.limit,
-      // this will come in scientific notation
-      // toFixed shows the real number, then regex to remove trailing zeros
-      originCoinDepositMin: marketInfo.minimum
-        .toFixed(10)
-        .replace(/\.?0+$/, ""),
-      originCoinDepositFee: marketInfo.minerFee,
-    }),
-    [types.GET_COIN_STATS_FAIL]: (state, { data: error }) => ({
-      loading: false,
-      error,
-    }),
+    [actions.GET_COIN_STATS_START]: (
+      state: ShapeShiftState,
+      action: GetCoinStatsStart
+    ): ShapeShiftState => {
+      const coin = action.data;
+      return {
+        ...state,
+        updating: true,
+        originCoin: coin,
+      };
+    },
+    [actions.GET_COIN_STATS_SUCCESS]: (
+      state: ShapeShiftState,
+      action: GetCoinStatsSuccess
+    ): ShapeShiftState => {
+      const marketInfo: ShapeShiftMarketInfo = action.data;
 
-    [types.PREPARE_SHAPE_SHIFT_START]: () => ({
+      return {
+        ...state,
+        loading: false,
+        updating: false,
+        originCoinDepositMax: marketInfo.limit,
+        // this will come in scientific notation
+        // toFixed shows the real number, then regex to remove trailing zeros
+        originCoinDepositMin: marketInfo.minimum
+          .toFixed(10)
+          .replace(/\.?0+$/, ""),
+        originCoinDepositFee: marketInfo.minerFee,
+      };
+    },
+    [actions.GET_COIN_STATS_FAIL]: (
+      state: ShapeShiftState,
+      action: GetCoinStatsFail
+    ): ShapeShiftState => {
+      const error = action.data;
+      return {
+        ...state,
+        loading: false,
+        error,
+      };
+    },
+
+    [actions.PREPARE_SHAPE_SHIFT_START]: (
+      state: ShapeShiftState
+    ): ShapeShiftState => ({
+      ...state,
       error: undefined,
     }),
-    [types.PREPARE_SHAPE_SHIFT_SUCCESS]: (
-      state,
-      { data: { deposit, depositType, returnAddress, orderId } }
-    ) => ({
-      hasActiveShift: true,
-      shiftDepositAddress: deposit,
-      shiftCoinType: depositType,
-      shiftReturnAddress: returnAddress,
-      shiftOrderId: orderId,
-      shiftState: statuses.NO_DEPOSITS,
-    }),
-    [types.PREPARE_SHAPE_SHIFT_FAIL]: (state, { data: error }) => ({
-      error: error.message,
-    }),
+    [actions.PREPARE_SHAPE_SHIFT_SUCCESS]: (
+      state: ShapeShiftState,
+      action: PrepareShapeShiftSuccess
+    ) => {
+      const activeShiftInfo: ActiveShiftInfo = action.data;
+      return {
+        ...state,
+        hasActiveShift: true,
+        shiftDepositAddress: activeShiftInfo.deposit,
+        shiftCoinType: activeShiftInfo.depositType,
+        shiftReturnAddress: activeShiftInfo.returnAddress,
+        shiftOrderId: activeShiftInfo.orderId,
+        shiftState: statuses.NO_DEPOSITS,
+      };
+    },
+    [actions.PREPARE_SHAPE_SHIFT_FAIL]: (
+      state: ShapeShiftState,
+      action: PrepareShapeShiftFail
+    ) => {
+      const error: ShapeShiftErrorResponse = action.data;
+      return {
+        ...state,
+        error: error.message,
+      };
+    },
 
-    [types.CLEAR_SHAPE_SHIFT]: () => ({
+    [actions.CLEAR_SHAPE_SHIFT]: (state: ShapeShiftState): ShapeShiftState => ({
+      ...state,
       loading: false,
       updating: false,
       hasActiveShift: false,
@@ -83,21 +204,38 @@ export default handleActions(
       shiftReturnAddress: undefined,
       shiftCoinType: undefined,
       shiftOrderId: undefined,
-      originCoin: "BTC",
+      originCoin: state.shiftSupportedCoins[0],
     }),
 
-    [types.GET_ACTIVE_SHIFT_START]: () => ({
+    [actions.GET_ACTIVE_SHIFT_START]: (
+      state: ShapeShiftState
+    ): ShapeShiftState => ({
+      ...state,
       error: undefined,
       updating: true,
     }),
-    [types.GET_ACTIVE_SHIFT_SUCCESS]: (state, { data: status }) => ({
-      updating: false,
-      shiftState: status,
-    }),
-    [types.GET_ACTIVE_SHIFT_FAIL]: (state, { data: error }) => ({
-      updating: false,
-      error: error.message,
-    }),
+    [actions.GET_ACTIVE_SHIFT_SUCCESS]: (
+      state: ShapeShiftState,
+      action: GetActiveShiftSuccess
+    ): ShapeShiftState => {
+      const status = action.data;
+      return {
+        ...state,
+        updating: false,
+        shiftState: status,
+      };
+    },
+    [actions.GET_ACTIVE_SHIFT_FAIL]: (
+      state: ShapeShiftState,
+      action: GetActiveShiftFail
+    ): ShapeShiftState => {
+      const error: ShapeShiftErrorResponse = action.data;
+      return {
+        ...state,
+        updating: false,
+        error: error.message,
+      };
+    },
   },
   defaultState
 );

src/renderer/js/types/common.js

@@ -0,0 +1,3 @@
+export type FormikActions = {
+  setSubmitting: boolean => mixed,
+};

src/renderer/js/util/redux-utils.js

@@ -1,6 +1,7 @@
 // util for creating reducers
 // based off of redux-actions
 // https://redux-actions.js.org/docs/api/handleAction.html#handleactions
+
 export const handleActions = (actionMap, defaultState) => {
   return (state = defaultState, action) => {
     const handler = actionMap[action.type];