feat: App state token is now option(token)

src/App.re

@@ -1,31 +1,39 @@
-type state = {token: string};
+type state = {token: option(string)};
 
 type action =
   | Login(string)
   | Logout;
 
 let reducer = (action, _state) =>
   switch (action) {
-  | Login(jwt) => ReasonReact.Update({token: jwt})
-  | Logout => ReasonReact.Update({token: ""})
+  | Login(jwt) => ReasonReact.Update({token: Js.Option.some(jwt)})
+  | Logout => ReasonReact.Update({token: None})
   };
 
 let component = ReasonReact.reducerComponent("App");
 
 let make = _children => {
   ...component,
   reducer,
-  initialState: () => {token: ""},
+  initialState: () => {token: None},
   render: self =>
     <div className="app">
       (
-        (self.state.token === "") ?
-          <Login updateToken=(token => self.send(Login(token))) />
-          :
+        switch (self.state.token) {
+        | None =>
+          <Login updateToken=(
+            token =>
+              switch (token) {
+              | Some(token) => self.send(Login(token))
+              | None => self.send(Logout)
+              }
+            ) />
+        | Some(_token) =>
           <JobApp
             submitHandler=(_event => self.send(Logout))
             signOutHandler=(_event => self.send(Logout))
           />
+        }
       )
     </div>,
 };

src/Login.re

@@ -34,7 +34,7 @@ let make = (~updateToken, _children) => {
           Services.authenticate(
             ~email=state.email,
             ~password=state.password,
-            ~success=updateToken,
+            ~callback=updateToken,
             ~failure=()=>self.send(DisplayError)
           )
           ();

src/Services.re

@@ -16,7 +16,7 @@ module Decode = {
     };
 };
 
-let authenticate = (~email, ~password, ~success, ~failure, _self) => {
+let authenticate = (~email, ~password, ~callback, ~failure, _self) => {
   let authEndpoint = "https://jobhub-authentication-staging.herokuapp.com/login";
 
   let payload = Js.Dict.empty();
@@ -41,11 +41,12 @@ let authenticate = (~email, ~password, ~success, ~failure, _self) => {
     |> then_(json =>
       json
       |> Decode.authResponse
-      |> resp => success(resp.token)
+      |> resp => callback(Js.Option.some(resp.token))
       |> resolve
     )
     |> catch(err => {
       Js.log(err);
+      callback(None);
       failure();
       resolve();
     })