OrbitDB improvements

contracts/Forum.sol

@@ -80,17 +80,27 @@ contract Forum {
         return users[userAddress].orbitdb.postsDB;
     }
 
-    function getOrbitPublicKey() public view returns (string) {
-        require (hasUserSignedUp(msg.sender), "User hasn't signed up.");
-        return users[msg.sender].orbitdb.publicKey;
+    function getOrbitPublicKey(address userAddress) public view returns (string) {
+        require (hasUserSignedUp(userAddress), "User hasn't signed up.");
+        return users[userAddress].orbitdb.publicKey;
     }
 
     //TODO: encrypt using Metamask in the future
-    function getOrbitPrivateKey() public view returns (string) {
-        require (hasUserSignedUp(msg.sender), "User hasn't signed up.");
-        return users[msg.sender].orbitdb.privateKey;
+    function getOrbitPrivateKey(address userAddress) public view returns (string) {
+        require (hasUserSignedUp(userAddress), "User hasn't signed up.");
+        return users[userAddress].orbitdb.privateKey;
     }
 
+    function getOrbitDBInfo(address userAddress) public view returns (string, string, string, string, string) {
+        require (hasUserSignedUp(userAddress), "User hasn't signed up.");
+        return (
+                users[userAddress].orbitdb.id,
+                users[userAddress].orbitdb.topicsDB,
+                users[userAddress].orbitdb.postsDB,
+                users[userAddress].orbitdb.publicKey,
+                users[userAddress].orbitdb.privateKey
+        );
+    }
 
 
     //----------------------------------------POSTING----------------------------------------

package.json

@@ -11,8 +11,9 @@
     "drizzle-react": "^1.1.1",
     "drizzle-react-components": "^1.1.0",
     "eth-block-tracker-es5": "^2.3.2",
-    "ipfs":"^0.28.2",
-    "orbit-db":"^0.19.7",
+    "ipfs": "^0.28.2",
+    "orbit-db": "^0.19.7",
+    "orbit-db-keystore": "^0.1.0",
     "prop-types": "^15.6.1",
     "react": "^16.3.2",
     "react-dom": "^16.3.2",

src/containers/LoadingContainer.js

@@ -42,7 +42,7 @@ class LoadingContainer extends Component {
             )
         }
 
-        if (!this.props.orbitDB.initialized)
+        if (!this.props.orbitDB.ipfsInitialized)
         {
             return(
                 <main className="container loading-screen">

src/contractReducer.js

@@ -0,0 +1,16 @@
+const initialState = {
+    grabbed: false
+};
+
+const contractReducer = (state = initialState, action) => {
+    switch (action.type) {
+        case 'CONTRACT_GRABBED':
+            return {
+                grabbed: true,
+            };
+        default:
+            return state
+    }
+};
+
+export default contractReducer

src/contractSaga.js

@@ -0,0 +1,19 @@
+import { put, takeLatest } from 'redux-saga/effects'
+
+let contractGrabbed=false;
+let grabbedContract;
+
+function* grabContract({contract}) {
+    if(!contractGrabbed)
+    {
+        contractGrabbed=true;
+        grabbedContract = contract;
+        yield put({type: 'CONTRACT_GRABBED', ...[]});
+    }
+}
+
+function* contractSaga() {
+    yield takeLatest('LISTEN_FOR_EVENT', grabContract);
+}
+
+export  { contractSaga, grabbedContract };

src/layouts/home/HomeContainer.js

@@ -14,6 +14,8 @@ class Home extends Component {
                     <div className="pure-u-1-1">
                         <h2>Account</h2>
                         <p><strong>Username</strong>: {this.props.user.username}</p>
+                        <p><strong>Account</strong>: {this.props.user.address}</p>
+                        <p><strong>OrbitDB</strong>: {this.props.orbitDB.id}</p>
                         <UsernameFormContainer/>
                         <br/><br/>
                     </div>
@@ -29,6 +31,7 @@ const mapStateToProps = state => {
     accounts: state.accounts,
     Forum: state.contracts.Forum,
     user: state.user,
+    orbitDB: state.orbitDB,
     drizzleStatus: state.drizzleStatus
   }
 };

src/reducer.js

@@ -2,12 +2,14 @@ import { combineReducers } from 'redux'
 import { routerReducer } from 'react-router-redux'
 import { drizzleReducers } from 'drizzle'
 import userReducer from "./userReducer";
+import contractReducer from "./contractReducer";
 import orbitReducer from "./util/orbitReducer";
 
 const reducer = combineReducers({
     routing: routerReducer,
     user: userReducer,
     orbitDB: orbitReducer,
+    forumContract: contractReducer,
     ...drizzleReducers
 });
 

src/rootSaga.js

@@ -1,9 +1,11 @@
 import { all, fork } from 'redux-saga/effects'
 import { drizzleSagas } from 'drizzle'
+import { contractSaga } from "./contractSaga";
 import userSaga from "./userSaga";
+import orbitSaga from "./util/orbitSaga";
 
 export default function* root() {
-    let sagas = [...drizzleSagas,userSaga];
+    let sagas = [...drizzleSagas,userSaga,orbitSaga,contractSaga];
     yield all(
         sagas.map(saga => fork(saga))
     )

src/userSaga.js

@@ -1,19 +1,18 @@
 import { call, put, select, takeLatest, takeEvery } from 'redux-saga/effects'
+import {grabbedContract as contract} from "./contractSaga";
 
+const contractWasGrabbed = (state) => state.forumContract.grabbed;
 const accounts = (state) => state.accounts;
 let account;
 
 let initFlag = false;
 
-let forumContract;
-let contractGrabbed = false;
-
 
 function* initUser() {
     if(!initFlag)
     {
         while(true)
-            if(contractGrabbed)
+            if(yield select(contractWasGrabbed))
             {
                 yield call(getUserData);
                 initFlag=true;
@@ -22,13 +21,6 @@ function* initUser() {
     }
 }
 
-function grabContract({contract}) {
-    if(!contractGrabbed)
-    {
-        forumContract = contract;
-        contractGrabbed=true;
-    }
-}
 
 function* updateUserData() {
     if(initFlag)
@@ -37,14 +29,18 @@ function* updateUserData() {
 
 
 function* getUserData() {
-    account = (yield select(accounts))[0];
-    forumContract.methods["hasUserSignedUp"].cacheCall(...[account]);
-    const txObj1 = yield call(forumContract.methods["hasUserSignedUp"], ...[account]);
+    const currentAccount = (yield select(accounts))[0];
+    if(currentAccount!==account)
+    {
+        account = currentAccount;
+        yield put({type: 'ACCOUNT_CHANGED', ...[]});
+    }
+    const txObj1 = yield call(contract.methods["hasUserSignedUp"], ...[account]);
     try {
         const callResult = yield call(txObj1.call, {address:account});
         if(callResult)
         {
-            const txObj2 = yield call(forumContract.methods["getUsername"], ...[account]);
+            const txObj2 = yield call(contract.methods["getUsername"], ...[account]);
             const username = yield call(txObj2.call, {address:account});
             const dispatchArgs = {
                 address: account,
@@ -67,7 +63,6 @@ function* getUserData() {
 
 
 function* userSaga() {
-    yield takeLatest('LISTEN_FOR_EVENT', grabContract);
     yield takeLatest("DRIZZLE_INITIALIZED", initUser);
     yield takeEvery("ACCOUNTS_FETCHED", updateUserData);
 }

src/util/orbit.js

@@ -1,6 +1,7 @@
 import IPFS from 'ipfs';
 import OrbitDB from 'orbit-db';
-
+import Keystore  from 'orbit-db-keystore';
+import path from 'path';
 import store from './../store';
 
 // OrbitDB uses Pubsub which is an experimental feature
@@ -17,7 +18,7 @@ const ipfsOptions = {
 const ipfs = new IPFS(ipfsOptions);
 
 ipfs.on('ready', async () => {
-    store.dispatch({type: "IPFS_READY"});
+    store.dispatch({type: "IPFS_INITIALIZED"});
 });
 
 
@@ -25,9 +26,25 @@ async function createDatabases() {
     const orbitdb = new OrbitDB(ipfs);
     const topicsDB = await orbitdb.keyvalue('topics');
     const postsDB = await orbitdb.keyvalue('posts');
-    console.log("OrbitDBs created successfully!");
+    store.dispatch({type: "DATABASES_CREATED", id: orbitdb.id});
     return {id: orbitdb.id, topicsDB: topicsDB.address.root, postsDB: postsDB.address.root,
         publicKey: orbitdb.key.getPublic('hex'), privateKey:orbitdb.key.getPrivate('hex')};
 }
 
-export { createDatabases }
+async function loadDatabases(id,topicsDB, postsDB,publicKey,privateKey) {   //TODO: does this work? does IPFS need reinitializng?
+    let directory = "./orbitdb";
+    let keystore = Keystore.create(path.join(directory, id, '/keystore'));
+    keystore._storage.setItem(id, JSON.stringify({
+        publicKey: publicKey,
+        privateKey: privateKey
+    }));
+    const orbitdb = new OrbitDB(ipfs,directory,{peerId:id, keystore:keystore});
+    await orbitdb.keyvalue('/orbitdb/' + topicsDB +'/topics');
+    await orbitdb.keyvalue('/orbitdb/' + postsDB +'/posts');
+    //todo: loadedDBs.load() (?)
+    store.dispatch({type: "DATABASES_LOADED", id: orbitdb.id});
+}
+
+
+
+export { createDatabases, loadDatabases }

src/util/orbitReducer.js

@@ -1,17 +1,33 @@
 const initialState = {
-    initialized: false,
-    databasesReady: false
+    ipfsInitialized: false,
+    ready: false,
+    id: null
 };
 
 const orbitReducer = (state = initialState, action) => {
     switch (action.type) {
-        case 'IPFS_READY':
+        case 'IPFS_INITIALIZED':
             return {
-                initialized: true
+                ...state,
+                ipfsInitialized: true
             };
         case 'DATABASES_CREATED':
             return {
-                databasesReady: true
+                ...state,
+                ready: true,
+                id: action.id
+            };
+        case 'DATABASES_LOADED':
+            return {
+                ...state,
+                ready: true,
+                id: action.id
+            };
+        case 'DATABASES_NOT_READY':
+            return {
+                ...state,
+                ready: false,
+                id: null
             };
         default:
             return state

src/util/orbitSaga.js

@@ -0,0 +1,42 @@
+import { loadDatabases } from './../util/orbit'
+import { call, put, select, takeLatest } from 'redux-saga/effects'
+import {grabbedContract as contract} from "../contractSaga";
+
+const accounts = (state) => state.accounts;
+
+let latestAccount;
+
+function* getOrbitDBInfo() {
+    yield put({type: 'ORRBIT_GETTING_INFO', ...[]});
+    const account = (yield select(accounts))[0];
+    if(account!==latestAccount)
+    {
+        console.log("Deleting local storage..");
+        localStorage.clear();
+        const txObj1 = yield call(contract.methods["hasUserSignedUp"], ...[account]);
+        try {
+            const callResult = yield call(txObj1.call, {address:account});
+            if(callResult) {
+                const txObj2 = yield call(contract.methods["getOrbitDBInfo"], ...[account]);
+                const info = yield call(txObj2.call, {address: account});
+                //TODO: update localStorage OrbitDB stuff
+                yield call(loadDatabases, info[0], info[1], info[2],info[3], info[4]);
+            }
+            else
+                yield put({type: 'DATABASES_NOT_READY', ...[]});
+
+            latestAccount=account;
+        }
+        catch (error) {
+            console.error(error);
+            yield put({type: 'ORBIT_SAGA_ERROR', ...[]});
+        }
+
+    }
+}
+
+function* orbitSaga() {
+    yield takeLatest("ACCOUNT_CHANGED", getOrbitDBInfo);
+}
+
+export default orbitSaga;