fix(swap): optimize endpoints calls

Signed-off-by: Brian Sztamfater <brian@status.im>

src/status_im/contexts/wallet/swap/events.cljs

@@ -105,6 +105,10 @@
  (fn [{:keys [db]} [max-slippage]]
    {:db (assoc-in db [:wallet :ui :swap :max-slippage] (number/parse-float max-slippage))}))
 
+(rf/reg-event-fx :wallet.swap/set-loading-swap-proposal
+ (fn [{:keys [db]}]
+   {:db (assoc-in db [:wallet :ui :swap :loading-swap-proposal?] true)}))
+
 (rf/reg-event-fx :wallet/start-get-swap-proposal
  (fn [{:keys [db]} [{:keys [amount-in amount-out clean-approval-transaction?]}]]
    (let [wallet-address          (get-in db [:wallet :current-viewing-account-address])
@@ -155,7 +159,6 @@
                                       :last-request-uuid request-uuid
                                       :amount            amount
                                       :amount-hex        amount-in-hex
-                                      :loading-swap-proposal? true
                                       :initial-response? true)
                                      clean-approval-transaction?
                                      (dissoc :approval-transaction-id :approved-amount :swap-proposal)))
@@ -237,13 +240,16 @@
           [:centralized-metrics/track :metric/swap-proposal-failed {:error (:code error-response)}]]]}))
 
 (rf/reg-event-fx :wallet/stop-get-swap-proposal
- (fn []
-   {:json-rpc/call [{:method   "wallet_stopSuggestedRoutesAsyncCalculation"
+ (fn [{:keys [db]}]
+   (let [last-request-uuid (get-in db [:wallet :ui :swap :last-request-uuid])]
+     (when last-request-uuid
+       {:db            (update-in db [:wallet :ui :swap] dissoc :last-request-uuid)
+        :json-rpc/call [{:method   "wallet_stopSuggestedRoutesAsyncCalculation"
                          :params   []
                          :on-error (fn [error]
                                      (log/error "failed to stop fetching swap proposals"
                                                 {:event :wallet/stop-get-swap-proposal
-                                             :error error}))}]}))
+                                                 :error error}))}]}))))
 
 (rf/reg-event-fx
  :wallet/clean-swap-proposal

src/status_im/contexts/wallet/swap/setup_swap/view.cljs

@@ -26,6 +26,7 @@
     [utils.string :as utils.string]))
 
 (def ^:private default-text-for-unfocused-input "0.00")
+(def ^:private swap-proposal-debounce-time-ms 1000)
 
 (defn- on-close
   [start-point]
@@ -36,13 +37,20 @@
                  :clean-approval-transaction? true}])
   (events-helper/navigate-back))
 
-(defn- fetch-swap-proposal
-  [{:keys [amount valid-input? clean-approval-transaction?]}]
-  (if valid-input?
+(defn- start-get-swap-proposal
+  [amount clean-approval-transaction?]
+  (rf/dispatch [:wallet/stop-get-swap-proposal])
+  (rf/dispatch [:wallet.swap/set-loading-swap-proposal])
   (debounce/debounce-and-dispatch [:wallet/start-get-swap-proposal
                                    {:amount-in                   amount
                                     :clean-approval-transaction? clean-approval-transaction?}]
-                                    100)
+                                  swap-proposal-debounce-time-ms))
+
+(defn- fetch-swap-proposal
+  [{:keys [amount valid-input? clean-approval-transaction?]}]
+  (debounce/clear-all)
+  (if valid-input?
+    (start-get-swap-proposal amount clean-approval-transaction?)
     (rf/dispatch [:wallet/clean-swap-proposal
                   {:clean-amounts?              true
                    :clean-approval-transaction? clean-approval-transaction?}])))

src/status_im/subs/wallet/swap.cljs

@@ -47,6 +47,11 @@
  :<- [:wallet/swap]
  :-> :error-response)
 
+(rf/reg-sub
+ :wallet/swap-last-request-uuid
+ :<- [:wallet/swap]
+ :-> :last-request-uuid)
+
 (rf/reg-sub
  :wallet/swap-error-response-code
  :<- [:wallet/swap-error-response]