Add toCSV function

components/settings.js

@@ -3,12 +3,12 @@ import {
   View,
   Button,
   Text,
-  ScrollView,
-  Picker
+  ScrollView
 } from 'react-native'
 import Share from 'react-native-share'
 import { Base64 } from 'js-base64'
 import styles from '../styles/index'
+import objectPath from 'object-path'
 
 export default class Settings extends Component {
   constructor(props) {
@@ -26,41 +26,68 @@ export default class Settings extends Component {
         <View style={styles.homeButtons}>
           <View style={styles.homeButton}>
             <Button
-              onPress={() => this.setState({pickerVisible: true})}
+              onPress={async () => {
+                const data = makeDataURI()
+                console.log(data)
+                try {
+                  await Share.open({
+                    title: 'My Drip data export',
+                    url: data,
+                    subject: 'My Drip data export',
+                    type: 'text/csv',
+                    showAppsToView: true
+                  })
+                } catch (err) {
+                  // TODO handle error
+                  console.log(err)
+                }
+              }}
               title="Edit symptoms for today">
             </Button>
           </View>
         </View>
-        {this.state.pickerVisible &&
-          <Picker
-            selectedValue='json'
-            style={{ height: 50, width: 200 }}
-            onValueChange={ async format => {
-              const data = makeDataURI(format)
-              console.log(data)
-              try {
-                await Share.open({
-                  title: 'My Drip data export',
-                  url: data,
-                  subject: 'My Drip data export',
-                  type: 'text/csv',
-                  showAppsToView: true
-                })
-              } catch (err) {
-                console.log(err)
-              }
-            }}>
-            <Picker.Item label="JSON" value="json" />
-            <Picker.Item label="CSV" value="csv" />
-          </Picker>
-        }
       </ScrollView>
     )
   }
 }
 
-function makeDataURI(format) {
-  const data = {hello: "world"}
-  const encoded = Base64.encodeURI(JSON.stringify(data))
+function makeDataURI() {
+  //TODO handle empty DB
+  const data = [{
+    date: '2018-06-23',
+    temperature: {
+      value: 36.8,
+      exclude: false
+    }
+  }]
+  const csv = transformToCsv(data)
+  const encoded = Base64.encodeURI(csv)
   return `data:text/csv;base64,${encoded}`
+}
+
+function transformToCsv(json) {
+  const day = json[0]
+  const columnNames = getPrefixedKeys(day)
+  const rows = json
+    .map(day => {
+      return columnNames.map(column => {
+        return objectPath.get(day, column, '')
+      })
+    })
+    .map(row => row.join(','))
+
+  rows.unshift(columnNames.join(','))
+  return rows.join('\n')
+}
+
+function getPrefixedKeys(obj, prefix) {
+  return Object.keys(obj).reduce((acc, key) => {
+    const prefixedKey = prefix ? [prefix, key].join('.') : key
+    if (typeof obj[key] != 'object') {
+      acc.push(prefixedKey)
+      return acc
+    }
+    acc.push(...getPrefixedKeys(obj[key], prefixedKey))
+    return acc
+  }, [])
 }
\ No newline at end of file

package-lock.json

@@ -5744,6 +5744,11 @@
       "integrity": "sha512-FTMyFUm2wBcGHnH2eXmz7tC6IwlqQZ6mVZ+6dm6vZ4IQIHjs6FdNsQBuKGPuUUUY6NfJw2PshC08Tn6LzLDOag==",
       "dev": true
     },
+    "object-path": {
+      "version": "0.11.4",
+      "resolved": "https://registry.npmjs.org/object-path/-/object-path-0.11.4.tgz",
+      "integrity": "sha1-NwrnUvvzfePqcKhhwju6iRVpGUk="
+    },
     "object-visit": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/object-visit/-/object-visit-1.0.1.tgz",

package.json

@@ -20,6 +20,7 @@
     "js-base64": "^2.4.8",
     "js-joda": "^1.8.2",
     "moment": "^2.22.1",
+    "object-path": "^0.11.4",
     "react": "16.4.1",
     "react-native": "^0.56.0",
     "react-native-calendars": "^1.19.3",