delete individual blob files for completed file downloads to save space (#234)

app/src/component/AppNavigator.js

@@ -27,6 +27,7 @@ import {
   TextInput,
   ToastAndroid
 } from 'react-native';
+import { doDeleteCompleteBlobs } from '../redux/actions/file';
 import { SETTINGS, doHideNotification, doNotify, selectNotification } from 'lbry-redux';
 import {
   doUserEmailVerify,
@@ -227,6 +228,7 @@ class AppWithNavigationState extends React.Component {
   }
 
   _handleAppStateChange = (nextAppState) => {
+    const { dispatch } = this.props;
     // Check if the app was suspended
     if (AppState.currentState && AppState.currentState.match(/inactive|background/)) {
       AsyncStorage.getItem('firstLaunchTime').then(start => {
@@ -237,6 +239,11 @@ class AppWithNavigationState extends React.Component {
         }
       });
     }
+
+    if (AppState.currentState && AppState.currentState.match(/active/)) {
+      // Cleanup blobs for completed files upon app resume to save space
+      dispatch(doDeleteCompleteBlobs());
+    }
   }
 
   _handleUrl = (evt) => {

app/src/constants.js

@@ -4,6 +4,7 @@ const Constants = {
 
   SETTING_ALPHA_UNDERSTANDS_RISKS: "alphaUnderstandRisks",
 
+  ACTION_DELETE_COMPLETED_BLOBS: "DELETE_COMPLETED_BLOBS",
   ACTION_FIRST_RUN_PAGE_CHANGED: "FIRST_RUN_PAGE_CHANGED",
 };
 

app/src/page/splash/index.js

@@ -8,6 +8,7 @@ import {
   selectUser,
   selectEmailToVerify
 } from 'lbryinc';
+import { doDeleteCompleteBlobs } from '../../redux/actions/file';
 import SplashScreen from './view';
 
 const select = state => ({
@@ -17,6 +18,7 @@ const select = state => ({
 
 const perform = dispatch => ({
     authenticate: (appVersion, deviceId) => dispatch(doAuthenticate(appVersion, deviceId)),
+    deleteCompleteBlobs: () => dispatch(doDeleteCompleteBlobs()),
     balanceSubscribe: () => dispatch(doBalanceSubscribe()),
     notify: data => dispatch(doNotify(data)),
     setEmailToVerify: email => dispatch(doUserEmailToVerify(email)),

app/src/page/splash/view.js

@@ -117,10 +117,13 @@ class SplashScreen extends React.PureComponent {
   }
 
   _updateStatusCallback(status) {
+    const { deleteCompleteBlobs } = this.props;
     const startupStatus = status.startup_status;
     // At the minimum, wallet should be started and blocks_behind equal to 0 before calling resolve
     const hasStarted = startupStatus.wallet && status.wallet.blocks_behind <= 0;
     if (hasStarted) {
+      deleteCompleteBlobs();
+
       // Wait until we are able to resolve a name before declaring
       // that we are done.
       // TODO: This is a hack, and the logic should live in the daemon

app/src/redux/actions/file.js

@@ -10,6 +10,7 @@ import {
     selectDownloadingByOutpoint,
 } from 'lbry-redux';
 import { Alert, NativeModules } from 'react-native';
+import Constants from '../../constants';
 
 const DOWNLOAD_POLL_INTERVAL = 250;
 
@@ -41,13 +42,17 @@ export function doUpdateLoadStatus(uri, outpoint) {
           NativeModules.LbryDownloadManager.updateDownload(uri, fileInfo.file_name, 100, writtenBytes, totalBytes);
         }
 
+        // Once a download has been completed, delete the individual blob files to save space
+        Lbry.blob_list({ sd_hash: fileInfo.sd_hash }).then(hashes => {
+          hashes.forEach(hash => {
+            Lbry.blob_delete({ blob_hash: hash });
+          });
+        });
+
         /*const notif = new window.Notification('LBRY Download Complete', {
           body: fileInfo.metadata.stream.metadata.title,
           silent: false,
-        });
-        notif.onclick = () => {
-          ipcRenderer.send('focusWindow', 'main');
-        };*/
+        });*/
       } else {
         // ready to play
         const { total_bytes: totalBytes, written_bytes: writtenBytes } = fileInfo;
@@ -301,3 +306,24 @@ export function doDeleteFile(outpoint, deleteFromComputer, abandonClaim) {
     //setProgressBar(totalProgress);
   };
 }
+
+export function doDeleteCompleteBlobs() {
+  return dispatch => {
+    dispatch({
+      type: Constants.ACTION_DELETE_COMPLETED_BLOBS,
+      data: {},
+    });
+
+    Lbry.file_list().then(files => {
+      files.forEach(fileInfo => {
+        if (fileInfo.completed) {
+          Lbry.blob_list({ sd_hash: fileInfo.sd_hash }).then(hashes => {
+            hashes.forEach(hash => {
+              Lbry.blob_delete({ blob_hash: hash });
+            });
+          });
+        }
+      });
+    });
+  };
+}