rewrite website

src/components/admin/table/SortableTh.svelte

@@ -0,0 +1,48 @@
+<script lang="ts">
+  import { getContext, type Snippet } from 'svelte';
+  import type { Writable } from 'svelte/store';
+  import Icon from '@iconify/svelte';
+
+  // types
+  interface Props {
+    key?: string;
+
+    children?: Snippet;
+  }
+
+  interface SortableHeaderContext {
+    headerKey: Writable<string>;
+    onSort: (key: string, order: 'asc' | 'desc') => void;
+  }
+
+  // inputs
+  const { key, children, ...restProps }: Props & Record<string, any> = $props();
+
+  let { headerKey, onSort }: SortableHeaderContext = getContext('sortableHeader');
+
+  let asc = $state(false);
+
+  // callbacks
+  function onButtonClick() {
+    if (key == undefined) return;
+
+    $headerKey = key;
+    asc = !asc;
+    onSort(key, asc ? 'asc' : 'desc');
+  }
+</script>
+
+<th {...restProps}>
+  {#if key}
+    <button class="flex items-center gap-1" onclick={() => onButtonClick()}>
+      <span>{@render children?.()}</span>
+      {#if $headerKey === key && asc}
+        <Icon icon="heroicons:chevron-up-16-solid" />
+      {:else}
+        <Icon icon="heroicons:chevron-down-16-solid" />
+      {/if}
+    </button>
+  {:else}
+    {@render children?.()}
+  {/if}
+</th>