[fix] fetch wallet token transactions

- previously wallet transaction fetching was quite hazardous
- most of the time the `:wallet/all-tokens` map was nil so no token
was recognized
- the query for transfers was made accross 100000 blocks, now it
only checks that the first time, then from latest block checked minus
12 to follow progress of unconfirmed transactions

Signed-off-by: yenda <eric@status.im>

src/status_im/models/transactions.cljs

@@ -114,11 +114,13 @@
        (error-fn error)
        (add-block-info web3 current-block-number chain-tokens direction result success-fn)))))
 
-(defn- limited-from-block [current-block-number]
+(defn- limited-from-block [current-block-number latest-block-checked]
   {:pre [(integer? current-block-number)]
    ;; needs to be a positive etherium hex
    :post [(string? %) (string/starts-with? % "0x")]}
-  (-> current-block-number (- block-query-limit) (max 0) ethereum/int->hex))
+  (if latest-block-checked
+    (-> latest-block-checked (- confirmations-count-threshold) ethereum/int->hex)
+    (-> current-block-number (- block-query-limit) (max 0) ethereum/int->hex)))
 
 ;; Here we are querying event logs for Transfer events.
 ;;
@@ -130,6 +132,8 @@
 ;; - topics[2] - address of token sender with leading zeroes padding up to 32 bytes
 ;;
 
+(defonce latest-block-checked (atom nil))
+
 (defn- get-token-transfer-logs
   ;; NOTE(goranjovic): here we use direct JSON-RPC calls to get event logs because of web3 event issues with infura
   ;; we still use web3 to get other data, such as block info
@@ -138,7 +142,7 @@
   (let [[from to] (if (= :inbound direction)
                     [nil (add-padding (ethereum/normalized-address address))]
                     [(add-padding (ethereum/normalized-address address)) nil])
-        from-block (limited-from-block current-block-number)
+        from-block (limited-from-block current-block-number @latest-block-checked)
         args {:jsonrpc "2.0"
               :id      2
               :method  constants/web3-get-logs
@@ -146,6 +150,7 @@
                          :fromBlock from-block
                          :topics    [constants/event-transfer-hash from to]}]}
         payload (.stringify js/JSON (clj->js args))]
+    (reset! latest-block-checked current-block-number)
     (status/call-private-rpc payload
                              (response-handler web3 current-block-number chain-tokens direction ethereum/handle-error cb))))
 
@@ -377,12 +382,14 @@
             transaction-map (:transactions wallet)
             transaction-ids (set (keys transaction-map))
             chaos-mode? (get-in account [:settings :chaos-mode?])]
-        (if-not (or (have-unconfirmed-transactions? (vals transaction-map))
+        (if-not (or @latest-block-checked
+                    (have-unconfirmed-transactions? (vals transaction-map))
                     (not-empty (set/difference chat-transaction-ids transaction-ids)))
           (done-fn)
           (transactions-query-helper web3 all-tokens account-address chain done-fn chaos-mode?))))))
 
 (defn- start-sync! [{:keys [:account/account network web3] :as options}]
+  (reset! latest-block-checked nil)
   (let [account-address (:address account)]
     (when @polling-executor
       (async-util/async-periodic-stop! @polling-executor))
@@ -397,11 +404,14 @@
  ::sync-transactions-now
  (fn [db] (sync-now! db)))
 
-(re-frame/reg-fx ::start-sync-transactions
+(re-frame/reg-fx
+ ::start-sync-transactions
  (fn [db] (start-sync! db)))
 
 (fx/defn start-sync [{:keys [db]}]
-  {::start-sync-transactions (select-keys db [:network-status :account/account :app-state :network :web3])})
+  {::start-sync-transactions
+   (select-keys db [:network-status :account/account :wallet/all-tokens
+                    :app-state :network :web3])})
 
 (re-frame/reg-fx
  ::stop-sync-transactions

src/status_im/ui/screens/wallet/events.cljs

@@ -147,7 +147,8 @@
  :update-transactions
  (fn [{:keys [db]} _]
    {::wallet.transactions/sync-transactions-now
-    (select-keys db [:network-status :account/account :app-state :network :web3])}))
+    (select-keys db [:network-status :account/account :wallet/all-tokens
+                     :app-state :network :web3])}))
 
 (handlers/register-handler-fx
  :update-balance-success