From 1b14b697c9f30dff79ec5e740d6273067c00939e Mon Sep 17 00:00:00 2001
From: Vencislav Atanasov <git@6bez10.info>
Date: Wed, 18 Sep 2024 21:24:35 +0300
Subject: [PATCH] Add schedule loader

---
 .env                        |  1 +
 src/App.jsx                 |  7 ++-----
 src/ScheduleLoader.jsx      | 21 +++++++++++++++++++++
 src/hooks/useCfpRequest.js  |  7 +++++++
 src/hooks/useConferences.js | 17 +++++++++++++++++
 src/main.jsx                |  6 +++---
 src/utils.js                | 10 ++++++++++
 7 files changed, 61 insertions(+), 8 deletions(-)
 create mode 100644 .env
 create mode 100644 src/ScheduleLoader.jsx
 create mode 100644 src/hooks/useCfpRequest.js
 create mode 100644 src/hooks/useConferences.js
 create mode 100644 src/utils.js

diff --git a/.env b/.env
new file mode 100644
index 0000000..6a20770
--- /dev/null
+++ b/.env
@@ -0,0 +1 @@
+VITE_CFP_BASE_URL=http://cfp.localhost/api/conferences/
diff --git a/src/App.jsx b/src/App.jsx
index 8c1cd86..90deecb 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -1,11 +1,8 @@
 import './App.css';
+import ScheduleLoader from './ScheduleLoader.jsx';
 
 function App() {
-
-  return (
-    <>
-    </>
-  );
+  return (<ScheduleLoader/>);
 }
 
 export default App;
diff --git a/src/ScheduleLoader.jsx b/src/ScheduleLoader.jsx
new file mode 100644
index 0000000..8737fea
--- /dev/null
+++ b/src/ScheduleLoader.jsx
@@ -0,0 +1,21 @@
+import useConferences from './hooks/useConferences.js';
+
+export default function ScheduleLoader() {
+    const {
+        conferences,
+        error,
+        isLoading,
+    } = useConferences();
+
+    return (<>
+        {isLoading && <p>Please wait...</p>}
+        {error && <p>Error: {error}</p>}
+        {conferences && <>
+            <label>Select a conference</label>
+            <select>
+                {conferences.map(conference => <option key={conference.id}
+                                                       value={conference.id}>{conference.title}</option>)}
+            </select>
+        </>}
+    </>);
+}
diff --git a/src/hooks/useCfpRequest.js b/src/hooks/useCfpRequest.js
new file mode 100644
index 0000000..a2945a8
--- /dev/null
+++ b/src/hooks/useCfpRequest.js
@@ -0,0 +1,7 @@
+import useSWR from 'swr';
+
+const fetcher = (...args) => fetch(...args).then(res => res.json());
+
+export default function useCfpRequest(path = '') {
+    return useSWR(import.meta.env.VITE_CFP_BASE_URL.concat(path), fetcher);
+}
diff --git a/src/hooks/useConferences.js b/src/hooks/useConferences.js
new file mode 100644
index 0000000..676a099
--- /dev/null
+++ b/src/hooks/useConferences.js
@@ -0,0 +1,17 @@
+import useCfpRequest from './useCfpRequest.js';
+import { useMemo } from 'react';
+import { dateSorter } from '../utils.js';
+
+export default function useConferences() {
+    const {
+        data,
+        ...rest
+    } = useCfpRequest();
+
+    const conferences = useMemo(() => Array.isArray(data) ? data.sort(dateSorter('start_date')) : data, [data]);
+
+    return {
+        conferences,
+        ...rest,
+    };
+}
diff --git a/src/main.jsx b/src/main.jsx
index 833c97f..c40899d 100644
--- a/src/main.jsx
+++ b/src/main.jsx
@@ -4,7 +4,7 @@ import App from './App.jsx';
 import './index.css';
 
 createRoot(document.getElementById('root')).render(
-  <StrictMode>
-    <App />
-  </StrictMode>,
+    <StrictMode>
+        <App />
+    </StrictMode>,
 );
diff --git a/src/utils.js b/src/utils.js
new file mode 100644
index 0000000..c384d26
--- /dev/null
+++ b/src/utils.js
@@ -0,0 +1,10 @@
+function sorter(a, b, fieldFn) {
+    const fieldA = fieldFn(a);
+    const fieldB = fieldFn(b);
+
+    return fieldA === fieldB ? 0 : (
+        fieldA < fieldB ? -1 : 1
+    );
+}
+
+export const dateSorter = key => (a, b) => sorter(a, b, item => Date.parse(item[key]));