From 2e68e56e44ef1617b1226d8a2a6727fb0f01f097 Mon Sep 17 00:00:00 2001
From: Bogdan Bodnar <bogdan.bodnar@nic.cz>
Date: Fri, 15 Nov 2019 12:54:12 +0100
Subject: [PATCH 1/3] Add hook for API polling.

---
 src/api/hooks.js | 24 +++++++++++++++++++++++-
 src/index.js     |  7 ++++++-
 2 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/src/api/hooks.js b/src/api/hooks.js
index da236d0..f3f5746 100644
--- a/src/api/hooks.js
+++ b/src/api/hooks.js
@@ -5,7 +5,9 @@
  * See /LICENSE for more information.
  */
 
-import { useCallback, useReducer } from "react";
+import {
+    useCallback, useEffect, useReducer, useState,
+} from "react";
 
 import { ForisURLs } from "forisUrls";
 import {
@@ -90,3 +92,23 @@ const useAPIDelete = createAPIHook("DELETE");
 export {
     useAPIGet, useAPIPost, useAPIPatch, useAPIPut, useAPIDelete,
 };
+
+export function useAPIPolling(endpoint, delay) {
+    const [state, setState] = useState({ state: API_STATE.INIT });
+    const [getState, get] = useAPIGet(endpoint);
+
+    useEffect(() => {
+        if (getState.state === API_STATE.SUCCESS) {
+            setState(getState);
+        }
+    }, [getState]);
+
+    useEffect(() => {
+        if (delay !== null) {
+            const interval = setInterval(get, delay);
+            return () => clearInterval(interval);
+        }
+    }, [delay, get]);
+
+    return [state];
+}
diff --git a/src/index.js b/src/index.js
index 5f755d9..9a51089 100644
--- a/src/index.js
+++ b/src/index.js
@@ -7,7 +7,12 @@
 
 // API
 export {
-    useAPIGet, useAPIPost, useAPIPatch, useAPIPut, useAPIDelete,
+    useAPIGet,
+    useAPIPost,
+    useAPIPatch,
+    useAPIPut,
+    useAPIDelete,
+    useAPIPolling,
 } from "api/hooks";
 export { API_STATE } from "api/utils";
 

From 73e213c46788be024823afa90df88ecc444a028e Mon Sep 17 00:00:00 2001
From: Bogdan Bodnar <bogdan.bodnar@nic.cz>
Date: Fri, 15 Nov 2019 14:00:07 +0100
Subject: [PATCH 2/3] Add default delay.

---
 src/api/hooks.js | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/src/api/hooks.js b/src/api/hooks.js
index f3f5746..e873ef7 100644
--- a/src/api/hooks.js
+++ b/src/api/hooks.js
@@ -5,14 +5,10 @@
  * See /LICENSE for more information.
  */
 
-import {
-    useCallback, useEffect, useReducer, useState,
-} from "react";
+import { useCallback, useEffect, useReducer, useState, } from "react";
 
 import { ForisURLs } from "forisUrls";
-import {
-    API_ACTIONS, API_METHODS, API_STATE, getErrorPayload, HEADERS, TIMEOUT,
-} from "./utils";
+import { API_ACTIONS, API_METHODS, API_STATE, getErrorPayload, HEADERS, TIMEOUT, } from "./utils";
 
 const DATA_METHODS = ["POST", "PATCH", "PUT"];
 
@@ -93,7 +89,7 @@ export {
     useAPIGet, useAPIPost, useAPIPatch, useAPIPut, useAPIDelete,
 };
 
-export function useAPIPolling(endpoint, delay) {
+export function useAPIPolling(endpoint, delay = 1000) { // delay ms
     const [state, setState] = useState({ state: API_STATE.INIT });
     const [getState, get] = useAPIGet(endpoint);
 

From 429814ebb587b76e22072cb3ecab31b3a2d5a0e3 Mon Sep 17 00:00:00 2001
From: Bogdan Bodnar <bogdan.bodnar@nic.cz>
Date: Fri, 15 Nov 2019 14:16:37 +0100
Subject: [PATCH 3/3] Add until param to API polling hook.

---
 src/api/hooks.js | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/src/api/hooks.js b/src/api/hooks.js
index e873ef7..47cc71d 100644
--- a/src/api/hooks.js
+++ b/src/api/hooks.js
@@ -5,10 +5,14 @@
  * See /LICENSE for more information.
  */
 
-import { useCallback, useEffect, useReducer, useState, } from "react";
+import {
+    useCallback, useEffect, useReducer, useState,
+} from "react";
 
 import { ForisURLs } from "forisUrls";
-import { API_ACTIONS, API_METHODS, API_STATE, getErrorPayload, HEADERS, TIMEOUT, } from "./utils";
+import {
+    API_ACTIONS, API_METHODS, API_STATE, getErrorPayload, HEADERS, TIMEOUT,
+} from "./utils";
 
 const DATA_METHODS = ["POST", "PATCH", "PUT"];
 
@@ -89,7 +93,7 @@ export {
     useAPIGet, useAPIPost, useAPIPatch, useAPIPut, useAPIDelete,
 };
 
-export function useAPIPolling(endpoint, delay = 1000) { // delay ms
+export function useAPIPolling(endpoint, delay = 1000, until) { // delay ms
     const [state, setState] = useState({ state: API_STATE.INIT });
     const [getState, get] = useAPIGet(endpoint);
 
@@ -100,11 +104,11 @@ export function useAPIPolling(endpoint, delay = 1000) { // delay ms
     }, [getState]);
 
     useEffect(() => {
-        if (delay !== null) {
+        if (until) {
             const interval = setInterval(get, delay);
             return () => clearInterval(interval);
         }
-    }, [delay, get]);
+    }, [until, delay, get]);
 
     return [state];
 }