userSaga init

package.json

@@ -19,9 +19,8 @@
     "react-router": "^3.2.1",
     "react-router-redux": "^4.0.8",
     "redux": "^3.7.2",
-    "redux-auth-wrapper": "1.1.0",
     "redux-saga": "0.16.0",
-    "web3":"^1.0.0-beta.34"
+    "web3": "^1.0.0-beta.34"
   },
   "scripts": {
     "start": "react-scripts start",

src/containers/UsernameFormContainer.js

@@ -45,7 +45,6 @@ class UsernameFormContainer extends Component {
 
             }
         }
-        console.dir(initialState);
         this.state = initialState;
     }
 

src/drizzleOptions.js

@@ -11,8 +11,12 @@ const drizzleOptions = {
         Forum
     ],
     events: {
-        Forum: ['UserSignedUp']
+        Forum: ['UserSignedUp', 'UsernameUpdated']
-    }
+    },
+    polls: {
+        accounts: 3000,
+        blocks: 3000
+    },
 };
 
 export default drizzleOptions

src/layouts/home/Home.js

@@ -1,5 +1,5 @@
 import React, { Component } from 'react'
-import { AccountData, ContractData } from 'drizzle-react-components'
+import { ContractData } from 'drizzle-react-components'
 import UsernameFormContainer from '../../containers/UsernameFormContainer'
 
 class Home extends Component {
@@ -13,7 +13,6 @@ class Home extends Component {
           </div>
           <div className="pure-u-1-1">
             <h2>Account</h2>
-            <AccountData accountIndex="0" units="ether" precision="3" />
             <p><strong>Username</strong>: <ContractData contract="Forum" method="getUsername" methodArgs={[this.props.accounts[0]]}/></p>
             <UsernameFormContainer/>
             <br/><br/>

src/reducer.js

@@ -1,9 +1,11 @@
 import { combineReducers } from 'redux'
 import { routerReducer } from 'react-router-redux'
 import { drizzleReducers } from 'drizzle'
+import userReducer from "./userReducer";
 
 const reducer = combineReducers({
     routing: routerReducer,
+    user: userReducer,
     ...drizzleReducers
 });
 

src/rootSaga.js

@@ -1,8 +1,10 @@
 import { all, fork } from 'redux-saga/effects'
 import { drizzleSagas } from 'drizzle'
+import userSaga from "./userSaga";
 
 export default function* root() {
+    let sagas = [...drizzleSagas,userSaga];
     yield all(
-    drizzleSagas.map(saga => fork(saga))
+        sagas.map(saga => fork(saga))
     )
 }

src/userReducer.js

@@ -0,0 +1,26 @@
+const initialState = {
+    username: "Guest",
+    address: "0x0",
+    hasSignedUp: false
+};
+
+const userReducer = (state = initialState, action) => {
+    switch (action.type) {
+        case 'USER_HAS_SIGNED_UP':
+            return {
+                username: action.username,
+                address: action.address,
+                hasSignedUp: true
+            };
+        case 'USER_IS_GUEST':
+            return {
+                username: "Guest",
+                address: action.address,
+                hasSignedUp: false
+            };
+        default:
+            return state
+    }
+};
+
+export default userReducer

src/userSaga.js

@@ -0,0 +1,74 @@
+import { call, put, select, takeLatest, takeEvery } from 'redux-saga/effects'
+
+const accounts = (state) => state.accounts;
+let account;
+
+let initFlag = false;
+
+let forumContract;
+let contractGrabbed = false;
+
+
+function* initUser() {
+    if(!initFlag)
+    {
+        while(true)
+            if(contractGrabbed)
+            {
+                yield call(getUserData);
+                initFlag=true;
+                break;
+            }
+    }
+}
+
+function grabContract({contract}) {
+    if(!contractGrabbed)
+    {
+        forumContract = contract;
+        contractGrabbed=true;
+    }
+}
+
+function* updateUserData() {
+    if(initFlag)
+        yield call(getUserData);
+}
+
+
+function* getUserData() {
+    account = (yield select(accounts))[0];
+    forumContract.methods["hasUserSignedUp"].cacheCall(...[account]);
+    const txObject = yield call(forumContract.methods["hasUserSignedUp"], ...[account]);
+    try {
+        const callResult = yield call(txObject.call, {address:account});
+        if(callResult)
+        {
+            const username = yield call(forumContract.methods["getUsername"], ...[account]);
+            const dispatchArgs = {
+                address: account,
+                username: username
+            };
+            yield put({type: 'USER_HAS_SIGNED_UP', ...dispatchArgs});   //TODO: only dispatch if needed
+        }
+        else{
+            const dispatchArgs = {
+                address: account,
+            };
+            yield put({type: 'USER_IS_GUEST', ...dispatchArgs});    //TODO: only dispatch if needed
+        }
+    }
+    catch (error) {
+        console.error(error);
+        yield put({type: 'USER_FETCHING_ERROR', ...[]})
+    }
+}
+
+
+function* userSaga() {
+    yield takeLatest('LISTEN_FOR_EVENT', grabContract);
+    yield takeLatest("DRIZZLE_INITIALIZED", initUser);
+    yield takeEvery("ACCOUNTS_FETCHED", updateUserData);
+}
+
+export default userSaga;