From 7ca60179866bd0bb3cabc7e55c6a3ed88f7ccdce Mon Sep 17 00:00:00 2001
From: Alex Liebowitz <alex@alexliebowitz.com>
Date: Wed, 7 Dec 2016 16:29:04 -0500
Subject: [PATCH 1/3] Add lbry.getPeersForBlobHash()

---
 js/lbry.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/js/lbry.js b/js/lbry.js
index dffb903be..4be044fb0 100644
--- a/js/lbry.js
+++ b/js/lbry.js
@@ -183,6 +183,10 @@ lbry.getCostEstimate = function(name, callback) {
   lbry.call('get_est_cost', { name: name }, callback);
 }
 
+lbry.getPeersForBlobHash = function(blobHash, callback) {
+  lbry.call('get_peers_for_hash', { blob_hash: blobHash }, callback)
+}
+
 lbry.getFileStatus = function(name, callback) {
   lbry.call('get_lbry_file', { 'name': name }, callback);
 }

From 100dac0629e0d306235b171d6e229293eedc11b5 Mon Sep 17 00:00:00 2001
From: Alex Liebowitz <alex@alexliebowitz.com>
Date: Wed, 7 Dec 2016 16:31:44 -0500
Subject: [PATCH 2/3] My Files: monitor file availability using
 lbry.getPeersForBlobHash()

Also reduce the checking rate to once every 5 minutes to avoid
slamming your peers with availability checks
---
 js/page/my_files.js | 27 ++++++++++-----------------
 1 file changed, 10 insertions(+), 17 deletions(-)

diff --git a/js/page/my_files.js b/js/page/my_files.js
index d5e5aea5d..91b8ae3af 100644
--- a/js/page/my_files.js
+++ b/js/page/my_files.js
@@ -232,24 +232,17 @@ var MyFilesPage = React.createClass({
         filesInfo = [];
       }
 
-      if (!(this._fileInfoCheckNum % 5)) {
+      let newFilesAvailable;
+      if (!(this._fileInfoCheckNum % 300)) {
         // Time to update file availability status
 
+        newFilesAvailable = {};
+        let filePeersCheckCount = 0;
         for (let fileInfo of filesInfo) {
-          let name = fileInfo.lbry_uri;
-
-          if (name === null) {
-            continue;
-          }
-
-          lighthouse.search(name, (results) => {
-            var result = results[0];
-
-            var available = result.name == name && result.available;
-
-            if (typeof this.state.filesAvailable[name] === 'undefined' || available != this.state.filesAvailable[name]) {
-              var newFilesAvailable = Object.assign({}, this.state.filesAvailable);
-              newFilesAvailable[name] = available;
+          lbry.getPeersForBlobHash(fileInfo.sd_hash, (peers) => {
+            filePeersCheckCount++;
+            newFilesAvailable[fileInfo.sd_hash] = peers.length >= 0;
+            if (filePeersCheckCount >= filesInfo.length) {
               this.setState({
                 filesAvailable: newFilesAvailable,
               });
@@ -284,7 +277,7 @@ var MyFilesPage = React.createClass({
 
       for (let fileInfo of this.state.filesInfo) {
         let {completed, written_bytes, total_bytes, lbry_uri, file_name, download_path,
-          stopped, metadata} = fileInfo;
+          stopped, metadata, sd_hash} = fileInfo;
 
         var isMine = this._filesOwnership[lbry_uri];
 
@@ -314,7 +307,7 @@ var MyFilesPage = React.createClass({
         content.push(<MyFilesRow key={lbry_uri} lbryUri={lbry_uri} title={title || ('lbry://' + lbry_uri)} completed={completed} stopped={stopped}
                                  ratioLoaded={ratioLoaded} imgUrl={thumbnail} path={download_path}
                                  showWatchButton={showWatchButton} pending={pending}
-                                 available={this.state.filesAvailable[lbry_uri]} isMine={isMine} />);
+                                 available={this.state.filesAvailable[sd_hash]} isMine={isMine} />);
       }
     }
     return (

From 177fa2cfa294d448df1e5acc8fb0efac01da8fb3 Mon Sep 17 00:00:00 2001
From: Alex Liebowitz <alex@alexliebowitz.com>
Date: Tue, 13 Dec 2016 13:11:01 -0500
Subject: [PATCH 3/3] Move file availability check interval to class member

---
 js/page/my_files.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/js/page/my_files.js b/js/page/my_files.js
index 91b8ae3af..19cb5d152 100644
--- a/js/page/my_files.js
+++ b/js/page/my_files.js
@@ -166,6 +166,7 @@ var MyFilesRow = React.createClass({
 
 var MyFilesPage = React.createClass({
   _fileTimeout: null,
+  _fileInfoCheckRate: 300,
   _fileInfoCheckNum: 0,
   _filesOwnership: {},
 
@@ -233,7 +234,7 @@ var MyFilesPage = React.createClass({
       }
 
       let newFilesAvailable;
-      if (!(this._fileInfoCheckNum % 300)) {
+      if (!(this._fileInfoCheckNum % this._fileInfoCheckRate)) {
         // Time to update file availability status
 
         newFilesAvailable = {};