feat: store last session seen for faster loading

src/contracts/abstractions/Arbitrator.js

@@ -57,9 +57,7 @@ class Arbitrator extends AbstractContract {
       )
 
       // FIXME do we want to store session?
-      // this._StoreProvider.updateUserProfile(account, {
-      //   session: currentSession
-      // })
+      this._StoreProvider.updateUserSession(account, currentSession)
     }
 
     return this.getDisputesForUserFromStore(account)

src/utils/StoreProviderWrapper.js

@@ -207,6 +207,29 @@ class StoreProviderWrapper {
     )
   }
 
+  /**
+   * Update users last processed session.
+   * @param {string} userAddress - User's address.
+   * @param {string} session - The current session that the user has processed
+   * @returns {object} - HTTP response.
+   */
+  updateUserSession = async (userAddress, session) => {
+    const getBodyFn = () =>
+      new Promise(resolve =>
+        resolve(
+          JSON.stringify({
+            session
+          })
+        )
+      )
+
+    return this.queueWriteRequest(
+      getBodyFn,
+      'POST',
+      `${this._storeUri}/${userAddress}/session`
+    )
+  }
+
   /**
    * Update the stored data on a contract for a user. Note that you cannot overwrite contract data.
    * @param {string} userAddress - The user's address.

tests/unit/contracts/abstractions/Arbitrator.test.js

@@ -117,6 +117,7 @@ describe('Arbitrator', () => {
       const mockSetUpUserProfile = jest.fn()
       const mockGetDisputesForJuror = jest.fn()
       const mockUpdateDisputeProfile = jest.fn()
+      const mockUpdateSession = jest.fn()
       const mockDispute = {
         arbitratorAddress: arbitratorAddress,
         disputeId: '1',
@@ -131,7 +132,8 @@ describe('Arbitrator', () => {
             session: 1
           })
         ),
-        updateDisputeProfile: mockUpdateDisputeProfile
+        updateDisputeProfile: mockUpdateDisputeProfile,
+        updateUserSession: mockUpdateSession
       }
 
       arbitratorInstance.setStoreProviderInstance(mockStoreProvider)
@@ -170,6 +172,7 @@ describe('Arbitrator', () => {
         appealDraws: mockDispute.appealDraws,
         blockNumber: 1
       })
+      expect(mockUpdateSession.mock.calls.length).toBe(1)
     })
   })
 })