Resolve "Discuss and implement proper API methods."

src/api/hooks.js

@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2019 CZ.NIC z.s.p.o. (http://www.nic.cz/)
+ *
+ * This is free software, licensed under the GNU General Public License v3.
+ * See /LICENSE for more information.
+ */
+
+import { useReducer, useCallback } from "react";
+
+import { ForisURLs } from "forisUrls";
+import {
+    API_STATE, API_ACTIONS, API_METHODS, TIMEOUT, HEADERS, getErrorMessage,
+} from "./utils";
+
+const DATA_METHODS = ["POST", "PATCH", "PUT"];
+
+function createAPIHook(method) {
+    return (url, contentType) => {
+        const [state, dispatch] = useReducer(APIReducer, {
+            state: API_STATE.INIT,
+            data: null,
+        });
+
+        const sendRequest = useCallback(async (data) => {
+            const headers = { ...HEADERS };
+            if (contentType) {
+                headers["Content-Type"] = contentType;
+            }
+
+            dispatch({ type: API_ACTIONS.INIT });
+            try {
+                const request = API_METHODS[method];
+                const config = { timeout: TIMEOUT, headers };
+                let result;
+                if (DATA_METHODS.includes(method)) {
+                    result = await request(url, data, config);
+                } else {
+                    result = await request(url, config);
+                }
+                dispatch({ type: API_ACTIONS.SUCCESS, payload: result.data });
+            } catch (error) {
+                dispatch({
+                    type: API_ACTIONS.FAILURE,
+                    payload: getErrorMessage(error),
+                    status: error.response.status,
+                });
+            }
+        }, [url, contentType]);
+        return [state, sendRequest];
+    };
+}
+
+function APIReducer(state, action) {
+    switch (action.type) {
+    case API_ACTIONS.INIT:
+        return {
+            ...state,
+            state: API_STATE.SENDING,
+        };
+    case API_ACTIONS.SUCCESS:
+        return {
+            state: API_STATE.SUCCESS,
+            data: action.payload,
+        };
+    case API_ACTIONS.FAILURE:
+        if (action.status === 403) {
+            window.location.assign(ForisURLs.login);
+        }
+        return {
+            state: API_STATE.ERROR,
+            data: action.payload,
+        };
+    default:
+        throw new Error();
+    }
+}
+
+const useAPIGet = createAPIHook("GET");
+const useAPIPost = createAPIHook("POST");
+const useAPIPatch = createAPIHook("PATCH");
+const useAPIPut = createAPIHook("PUT");
+const useAPIDelete = createAPIHook("DELETE");
+
+export {
+    useAPIGet, useAPIPost, useAPIPatch, useAPIPut, useAPIDelete,
+};