1 files changed, 65 insertions, 0 deletions
diff --git a/ui/app/helpers/higher-order-components/with-method-data/with-method-data.component.js b/ui/app/helpers/higher-order-components/with-method-data/with-method-data.component.js
new file mode 100644
index 000000000..efa9ad0a2
--- /dev/null
+++ b/ui/app/helpers/higher-order-components/with-method-data/with-method-data.component.js
@@ -0,0 +1,65 @@
+import React, { PureComponent } from 'react'
+import PropTypes from 'prop-types'
+import { getMethodData, getFourBytePrefix } from '../../utils/transactions.util'
+
+export default function withMethodData (WrappedComponent) {
+  return class MethodDataWrappedComponent extends PureComponent {
+    static propTypes = {
+      transaction: PropTypes.object,
+      knownMethodData: PropTypes.object,
+      addKnownMethodData: PropTypes.func,
+    }
+
+    static defaultProps = {
+      transaction: {},
+      knownMethodData: {},
+    }
+
+    state = {
+      methodData: {},
+      done: false,
+      error: null,
+    }
+
+    componentDidMount () {
+      this.fetchMethodData()
+    }
+
+    async fetchMethodData () {
+      const { transaction, knownMethodData, addKnownMethodData } = this.props
+      const { txParams: { data = '' } = {} } = transaction
+
+      if (data) {
+        try {
+          let methodData
+          const fourBytePrefix = getFourBytePrefix(data)
+          if (fourBytePrefix in knownMethodData) {
+            methodData = knownMethodData[fourBytePrefix]
+          } else {
+            methodData = await getMethodData(data)
+            if (!Object.entries(methodData).length === 0) {
+              addKnownMethodData(fourBytePrefix, methodData)
+            }
+          }
+
+          this.setState({ methodData, done: true })
+        } catch (error) {
+          this.setState({ done: true, error })
+        }
+      } else {
+        this.setState({ done: true })
+      }
+    }
+
+    render () {
+      const { methodData, done, error } = this.state
+
+      return (
+        <WrappedComponent
+          { ...this.props }
+          methodData={{ data: methodData, done, error }}
+        />
+      )
+    }
+  }
+}