web3 interaction

src/components/atoms/PostActions.jsx

@@ -48,10 +48,12 @@ export default class PostActions extends PureComponent {
           </p>
         </article>
 
-        <ModalThanks
+        {this.state.showModal && (
-          isOpen={this.state.showModal}
+          <ModalThanks
-          handleCloseModal={this.toggleModal}
+            isOpen={this.state.showModal}
-        />
+            handleCloseModal={this.toggleModal}
+          />
+        )}
       </aside>
     )
   }

src/components/atoms/Web3Donation.jsx

@@ -0,0 +1,180 @@
+import React, { PureComponent } from 'react'
+import PropTypes from 'prop-types'
+import Web3 from 'web3'
+import styles from './Web3Donation.module.scss'
+
+const ONE_SECOND = 1000
+const ONE_MINUTE = ONE_SECOND * 60
+
+export default class Web3Donation extends PureComponent {
+  state = {
+    web3Connected: false,
+    networkError: null,
+    networkId: null,
+    accounts: [],
+    selectedAccount: null,
+    receipt: '',
+    loading: false,
+    error: null
+  }
+
+  static propTypes = {
+    address: PropTypes.string
+  }
+
+  web3 = new Web3(Web3.givenProvider || 'ws://localhost:8546')
+  interval = null
+  networkInterval = null
+
+  componentDidMount() {
+    const { web3 } = this
+
+    if (web3 && web3.eth) {
+      this.setState({ web3Connected: true })
+
+      this.fetchAccounts()
+      this.fetchNetwork()
+      this.initPoll()
+      this.initNetworkPoll()
+    }
+  }
+
+  componentWillUnmount() {
+    clearInterval(this.interval)
+    clearInterval(this.networkInterval)
+    this.setState({ web3Connected: false })
+  }
+
+  initPoll() {
+    if (!this.interval) {
+      this.interval = setInterval(this.fetchAccounts, ONE_SECOND)
+    }
+  }
+
+  initNetworkPoll() {
+    if (!this.networkInterval) {
+      this.networkInterval = setInterval(this.fetchNetwork, ONE_MINUTE)
+    }
+  }
+
+  fetchNetwork = () => {
+    const { web3 } = this
+
+    web3 &&
+      web3.eth &&
+      web3.eth.net.getId((err, netId) => {
+        if (err) {
+          this.setState({
+            networkError: err
+          })
+        } else {
+          if (netId != this.state.networkId) {
+            this.setState({
+              networkError: null,
+              networkId: netId
+            })
+          }
+        }
+      })
+  }
+
+  fetchAccounts = () => {
+    const { web3 } = this
+
+    web3 &&
+      web3.eth &&
+      web3.eth.getAccounts((err, accounts) => {
+        if (err) {
+          this.setState({
+            accountsError: err
+          })
+        } else {
+          this.setState({
+            accounts,
+            selectedAccount: accounts[0]
+          })
+        }
+      })
+  }
+
+  handleWeb3Button = () => {
+    const { web3 } = this
+
+    this.setState({ loading: true })
+
+    web3.eth
+      .sendTransaction({
+        from: this.state.selectedAccount,
+        to: this.props.address,
+        value: '10000000000000000'
+      })
+      .then(receipt => {
+        this.setState({ receipt, loading: false })
+      })
+      .catch(error => {
+        this.setState({ error, loading: false })
+      })
+  }
+
+  render() {
+    if (this.state.web3Connected) {
+      return (
+        <div className={styles.web3}>
+          <h4>web3</h4>
+          <p>Send a donation with your MetaMask or Mist account.</p>
+
+          {this.state.web3Connected && (
+            <div>
+              {this.state.loading ? (
+                'Hang on...'
+              ) : (
+                <button
+                  className="btn btn-primary"
+                  onClick={this.handleWeb3Button}
+                  disabled={
+                    !(this.state.networkId === 1) || !this.state.selectedAccount
+                  }
+                >
+                  Make it rain 0.01 Ξ
+                </button>
+              )}
+
+              {this.state.accounts.length === 0 && (
+                <div className={styles.alert}>
+                  Web3 detected, but no account. Are you logged into your
+                  MetaMask account?
+                </div>
+              )}
+
+              {this.state.networkId !== 1 && (
+                <div className={styles.alert}>
+                  Please connect to Main network
+                </div>
+              )}
+
+              {this.state.error && (
+                <div className={styles.alert}>{this.state.error.message}</div>
+              )}
+
+              {this.state.receipt.status && (
+                <div className={styles.success}>
+                  You are awesome, thanks!
+                  <br />
+                  <a
+                    href={`https://etherscan.io/tx/${
+                      this.state.receipt.transactionHash
+                    }`}
+                  >
+                    See your transaction on etherscan.io.
+                  </a>
+                </div>
+              )}
+            </div>
+          )}
+        </div>
+      )
+    } else {
+      return null
+    }
+  }
+}

src/components/atoms/Web3Donation.module.scss

@@ -0,0 +1,39 @@
+@import 'variables';
+@import 'mixins';
+
+.web3 {
+    @include divider;
+
+    width: 100%;
+    text-align: center;
+    margin-top: $spacer / 2;
+    margin-bottom: $spacer;
+    padding-bottom: $spacer * 1.5;
+
+    button {
+        margin: auto;
+    }
+
+    h4 {
+        font-size: $font-size-large;
+        margin-top: 0;
+        margin-bottom: $spacer / 4;
+        color: $brand-grey;
+        text-align: center;
+    }
+
+    p {
+        color: $brand-grey-light;
+    }
+}
+
+.alert {
+    margin-top: $spacer / 2;
+    font-size: $font-size-small;
+    color: darken($alert-error, 60%);
+}
+
+.success {
+    composes: alert;
+    color: darken($alert-success, 60%);
+}

src/components/molecules/ModalThanks.jsx

@@ -2,8 +2,7 @@ import React, { PureComponent } from 'react'
 import { StaticQuery, graphql } from 'gatsby'
 import { QRCode } from 'react-qr-svg'
 import Clipboard from 'react-clipboard.js'
-import Web3 from 'web3'
+import Web3Donation from '../atoms/Web3Donation'
-
 import Modal from '../atoms/Modal'
 import { ReactComponent as IconClipboard } from '../../images/clipboard.svg'
 import styles from './ModalThanks.module.scss'
@@ -22,67 +21,6 @@ const query = graphql`
 `
 
 class ModalThanks extends PureComponent {
-  state = {
-    minimal: false,
-    web3Connected: false,
-    balance: '',
-    network: '',
-    accounts: [],
-    receipt: ''
-  }
-
-  web3 = new Web3(Web3.givenProvider || 'ws://localhost:8546')
-
-  componentDidMount() {
-    this.getWeb3Account()
-  }
-
-  getWeb3Account() {
-    if (this.web3 && this.web3.eth.net.isListening()) {
-      this.setState({ web3Connected: true })
-
-      this.web3.eth.net.getId((err, netId) => {
-        switch (netId) {
-          case '1':
-            this.setState({ network: 'Main' })
-            break
-          case '2':
-            this.setState({ network: 'Morden' })
-            break
-          case '3':
-            this.setState({ network: 'Ropsten' })
-            break
-          case '4':
-            this.setState({ network: 'Rinkeby' })
-            break
-          case '42':
-            this.setState({ network: 'Kovan' })
-            break
-          default:
-            this.setState({ network: 'unknown' })
-        }
-      })
-
-      this.web3.eth.getAccounts((error, accounts) => {
-        this.setState({ accounts })
-        this.web3.eth.getBalance(accounts[0]).then(balance => {
-          this.setState({ balance })
-        })
-      })
-    }
-  }
-
-  handleWeb3Button = () => {
-    this.web3.eth
-      .sendTransaction({
-        from: this.state.accounts[0],
-        to: '0x339dbC44d39bf1961E385ed0Ae88FC6069b87Ea1',
-        value: '1000000000000000'
-      })
-      .then(receipt => this.setState({ receipt }))
-      .catch(err => console.error(err))
-  }
-
   render() {
     return (
       <StaticQuery
@@ -97,19 +35,7 @@ class ModalThanks extends PureComponent {
               title="Say thanks"
             >
               <div className={styles.modalThanks}>
-                {this.state.web3Connected && (
+                <Web3Donation address={author.ether} />
-                  <div>
-                    <button
-                      className="btn btn-primary"
-                      onClick={this.handleWeb3Button}
-                    >
-                      Make it rain
-                    </button>
-                    {this.state.receipt.status && (
-                      <div>{this.state.receipt.transactionHash}</div>
-                    )}
-                  </div>
-                )}
 
                 {Object.keys(author).map((address, i) => (
                   <div key={i} className={styles.coin}>
@@ -118,7 +44,7 @@ class ModalThanks extends PureComponent {
                       bgColor="transparent"
                       fgColor="#6b7f88"
                       level="Q"
-                      style={{ width: 150 }}
+                      style={{ width: 120 }}
                       value={author[address]}
                     />
                     <pre>

src/components/molecules/ModalThanks.module.scss

@@ -5,10 +5,6 @@
         display: flex;
         justify-content: space-between;
         flex-wrap: wrap;
-
-        > div:first-child {
-            width: 100%;
-        }
     }
 }
 

src/components/organisms/Footer.jsx

@@ -74,10 +74,12 @@ export default class Footer extends PureComponent {
                     </button>
                   </p>
 
-                  <ModalThanks
+                  {this.state.showModal && (
-                    isOpen={this.state.showModal}
+                    <ModalThanks
-                    handleCloseModal={this.toggleModal}
+                      isOpen={this.state.showModal}
-                  />
+                      handleCloseModal={this.toggleModal}
+                    />
+                  )}
                 </section>
               </Container>
             </footer>