Add ability to have claim searches auto-fetch up to 3 pages. (#504)

* Add ability to have claim searches auto-fetch up to 3 pages.

* make total_items and total_pages optional

* use auto pagination strategy when determining live claim

* Bump page size back to 50

flow-typed/Lbry.js

@@ -101,8 +101,8 @@ declare type ClaimSearchResponse = {
   items: Array<Claim>,
   page: number,
   page_size: number,
-  total_items: number,
-  total_pages: number,
+  total_items?: number,
+  total_pages?: number,
 };
 
 declare type ClaimListResponse = {

ui/redux/actions/claims.js

@@ -615,11 +615,16 @@ export function doClaimSearch(
     order_by?: Array<string>,
     release_time?: string,
     has_source?: boolean,
-    has_no_souce?: boolean,
+    has_no_source?: boolean,
   } = {
     no_totals: true,
     page_size: 10,
     page: 1,
+  },
+  settings: {
+    useAutoPagination?: boolean,
+  } = {
+    useAutoPagination: false,
   }
 ) {
   const query = createNormalizedClaimSearchKey(options);
@@ -659,7 +664,39 @@ export function doClaimSearch(
       return false;
     };
 
-    return await Lbry.claim_search(options).then(success, failure);
+    const autoPaginate = () => {
+      let allClaims = [];
+
+      const next = async (data: ClaimSearchResponse) => {
+        allClaims = allClaims.concat(data.items);
+
+        const moreData = data.items.length === options.page_size;
+
+        options.page++;
+
+        if (options.page > 3 || !moreData) {
+          // Flow doesn't understand that page_size is an optional property with a guaranteed default value.
+          // $FlowFixMe
+          return success({
+            items: allClaims,
+            page: options.page,
+            page_size: options.page_size,
+          });
+        }
+
+        try {
+          const data = await Lbry.claim_search(options);
+          return next(data);
+        } catch (err) {
+          failure(err);
+        }
+      };
+
+      return next;
+    };
+
+    const successCallback = settings.useAutoPagination ? autoPaginate() : success;
+    return await Lbry.claim_search(options).then(successCallback, failure);
   };
 }
 

ui/redux/actions/livestream.js

@@ -74,31 +74,41 @@ const filterUpcomingLiveStreamClaims = (upcomingClaims) => {
 };
 
 const fetchUpcomingLivestreamClaims = (channelIds: Array<string>) => {
-  return doClaimSearch({
-    page: 1,
-    page_size: 50,
-    has_no_source: true,
-    channel_ids: channelIds,
-    claim_type: ['stream'],
-    order_by: ['^release_time'],
-    release_time: `>${moment().subtract(5, 'minutes').unix()}`,
-    limit_claims_per_channel: 1,
-    no_totals: true,
-  });
+  return doClaimSearch(
+    {
+      page: 1,
+      page_size: 50,
+      has_no_source: true,
+      channel_ids: channelIds,
+      claim_type: ['stream'],
+      order_by: ['^release_time'],
+      release_time: `>${moment().subtract(5, 'minutes').unix()}`,
+      limit_claims_per_channel: 1,
+      no_totals: true,
+    },
+    {
+      useAutoPagination: true,
+    }
+  );
 };
 
 const fetchMostRecentLivestreamClaims = (channelIds: Array<string>, orderBy: Array<string> = ['release_time']) => {
-  return doClaimSearch({
-    page: 1,
-    page_size: 50,
-    has_no_source: true,
-    channel_ids: channelIds,
-    claim_type: ['stream'],
-    order_by: orderBy,
-    release_time: `<${moment().unix()}`,
-    limit_claims_per_channel: 2,
-    no_totals: true,
-  });
+  return doClaimSearch(
+    {
+      page: 1,
+      page_size: 50,
+      has_no_source: true,
+      channel_ids: channelIds,
+      claim_type: ['stream'],
+      order_by: orderBy,
+      release_time: `<${moment().unix()}`,
+      limit_claims_per_channel: 2,
+      no_totals: true,
+    },
+    {
+      useAutoPagination: true,
+    }
+  );
 };
 
 const distanceFromStreamStart = (claimA: any, claimB: any, channelStartedStreaming) => {