파일 다운로드 임시 구현

src/routes/(fullscreen)/file/[id]/+page.svelte

@@ -0,0 +1,42 @@
+<script lang="ts">
+  import FileSaver from "file-saver";
+  import { TopBar } from "$lib/components";
+  import { masterKeyStore } from "$lib/stores";
+  import { decryptFileMetadata, requestFileDownload } from "./service";
+
+  let { data } = $props();
+
+  let metadata = $state<Awaited<ReturnType<typeof decryptFileMetadata>> | undefined>();
+
+  $effect(() => {
+    if ($masterKeyStore) {
+      decryptFileMetadata(data.metadata, $masterKeyStore.get(data.metadata.mekVersion)!.key).then(
+        async (_metadata) => {
+          metadata = _metadata;
+
+          const file = await requestFileDownload(
+            data.id,
+            data.metadata.contentIv,
+            _metadata.dataKey,
+          );
+
+          // TODO: Preview
+
+          const blob = new Blob([file]);
+
+          FileSaver.saveAs(blob, metadata.name);
+        },
+      );
+    }
+  });
+</script>
+
+<svelte:head>
+  <title>파일</title>
+</svelte:head>
+
+{#if metadata}
+  <TopBar title={metadata.name} />
+{:else}
+  <TopBar />
+{/if}