Parse JSON from imported CSV

components/settings.js

@@ -10,6 +10,7 @@ import Share from 'react-native-share'
 import getDataAsCsvDataUri from '../lib/export-to-csv'
 import { DocumentPicker, DocumentPickerUtil } from 'react-native-document-picker'
 import rnfs from 'react-native-fs'
+import csvtojson from 'csvtojson'
 import styles from '../styles/index'
 import { settings as labels } from './labels'
 
@@ -48,8 +49,47 @@ export default class Settings extends Component {
               title={labels.buttonLabel}>
             </Button>
           </View>
+          <View style={styles.homeButton}>
+            <Button
+              onPress={ importData }
+              title="Import data">
+            </Button>
+          </View>
         </View>
       </ScrollView>
     )
   }
+}
+
+async function importData() {
+  let fileInfo
+  try {
+    fileInfo = await new Promise((resolve, reject) => {
+      DocumentPicker.show({
+        filetype: [DocumentPickerUtil.allFiles()],
+      }, (err, res) => {
+        if (err) return reject(err)
+        resolve(res)
+      })
+    })
+  } catch (err) {
+    Alert.alert('There was a problem opening the file picker')
+  }
+
+  let fileContent
+  try {
+    fileContent = await rnfs.readFile(fileInfo.uri, 'utf8')
+  } catch (err) {
+    Alert.alert('Could not open file')
+    console.log(err)
+  }
+
+  let json
+  try {
+    json = await csvtojson().fromString(fileContent)
+  } catch(err) {
+    Alert.alert('Could not parse CSV file')
+  }
+
+  console.log(json)
 }

package-lock.json

@@ -2071,6 +2071,11 @@
         "inherits": "2.0.1"
       }
     },
+    "bluebird": {
+      "version": "3.5.1",
+      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.1.tgz",
+      "integrity": "sha512-MKiLiV+I1AA596t9w1sQJ8jkiSr5+ZKi0WKrYGUn6d1Fx+Ij4tIj+m2WMQSGczs5jZVxV339chE8iwk6F64wjA=="
+    },
     "boom": {
       "version": "2.10.1",
       "resolved": "https://registry.npmjs.org/boom/-/boom-2.10.1.tgz",
@@ -2568,6 +2573,26 @@
         "boom": "2.10.1"
       }
     },
+    "csvtojson": {
+      "version": "2.0.8",
+      "resolved": "https://registry.npmjs.org/csvtojson/-/csvtojson-2.0.8.tgz",
+      "integrity": "sha512-DC6YFtsJiA7t/Yz+KjzT6GXuKtU/5gRbbl7HJqvDVVir+dxdw2/1EgwfgJdnsvUT7lOnON5DvGftKuYWX1nMOQ==",
+      "requires": {
+        "bluebird": "^3.5.1",
+        "lodash": "^4.17.3",
+        "strip-bom": "^2.0.0"
+      },
+      "dependencies": {
+        "strip-bom": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/strip-bom/-/strip-bom-2.0.0.tgz",
+          "integrity": "sha1-YhmoVhZSBJHzV4i9vxRHqZx+aw4=",
+          "requires": {
+            "is-utf8": "^0.2.0"
+          }
+        }
+      }
+    },
     "dashdash": {
       "version": "1.14.1",
       "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
@@ -4680,6 +4705,11 @@
       "resolved": "https://registry.npmjs.org/is-typedarray/-/is-typedarray-1.0.0.tgz",
       "integrity": "sha1-5HnICFjfDBsR3dppQPlgEfzaSpo="
     },
+    "is-utf8": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/is-utf8/-/is-utf8-0.2.1.tgz",
+      "integrity": "sha1-Sw2hRCEE0bM2NA6AeX6GXPOffXI="
+    },
     "is-windows": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/is-windows/-/is-windows-1.0.2.tgz",

package.json

@@ -16,6 +16,7 @@
   },
   "dependencies": {
     "assert": "^1.4.1",
+    "csvtojson": "^2.0.8",
     "date-range": "0.0.2",
     "js-base64": "^2.4.8",
     "js-joda": "^1.8.2",