암호 키 내보내기 페이지 구현

package.json

@@ -23,6 +23,7 @@
     "@sveltejs/kit": "^2.0.0",
     "@sveltejs/vite-plugin-svelte": "^4.0.0",
     "@types/better-sqlite3": "^7.6.11",
+    "@types/file-saver": "^2.0.7",
     "@types/jsonwebtoken": "^9.0.7",
     "@types/ms": "^0.7.34",
     "@types/node-schedule": "^2.1.7",
@@ -33,6 +34,7 @@
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-svelte": "^2.36.0",
     "eslint-plugin-tailwindcss": "^3.17.5",
+    "file-saver": "^2.0.5",
     "globals": "^15.0.0",
     "prettier": "^3.3.2",
     "prettier-plugin-svelte": "^3.2.6",

pnpm-lock.yaml

@@ -49,6 +49,9 @@ devDependencies:
   '@types/better-sqlite3':
     specifier: ^7.6.11
     version: 7.6.12
+  '@types/file-saver':
+    specifier: ^2.0.7
+    version: 2.0.7
   '@types/jsonwebtoken':
     specifier: ^9.0.7
     version: 9.0.7
@@ -79,6 +82,9 @@ devDependencies:
   eslint-plugin-tailwindcss:
     specifier: ^3.17.5
     version: 3.17.5(tailwindcss@3.4.17)
+  file-saver:
+    specifier: ^2.0.5
+    version: 2.0.5
   globals:
     specifier: ^15.0.0
     version: 15.14.0
@@ -1288,6 +1294,10 @@ packages:
     resolution: {integrity: sha512-AYnb1nQyY49te+VRAVgmzfcgjYS91mY5P0TKUDCLEM+gNnA+3T6rWITXRLYCpahpqSQbN5cE+gHpnPyXjHWxcw==}
     dev: true
 
+  /@types/file-saver@2.0.7:
+    resolution: {integrity: sha512-dNKVfHd/jk0SkR/exKGj2ggkB45MAkzvWCaqLUUgkyjITkGNzH8H+yUwr+BLJUBjZOe9w8X3wgmXhZDRg1ED6A==}
+    dev: true
+
   /@types/json-schema@7.0.15:
     resolution: {integrity: sha512-5+fP8P8MFNC+AyZCDxrB2pkZFPGzqQWUzpSeuuVLvm8VMcorNYavBqoFcxK8bQz4Qsbn4oUEEem4wDLfcysGHA==}
     dev: true
@@ -2269,6 +2279,10 @@ packages:
       flat-cache: 4.0.1
     dev: true
 
+  /file-saver@2.0.5:
+    resolution: {integrity: sha512-P9bmyZ3h/PRG+Nzga+rbdI4OEpNDzAVyy74uVO9ATgzLK6VtAsYybF/+TOCvrc0MO793d6+42lLyZTw7/ArVzA==}
+    dev: true
+
   /file-uri-to-path@1.0.0:
     resolution: {integrity: sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw==}
     dev: false

src/lib/components/BottomSheet.svelte

@@ -0,0 +1,31 @@
+<script lang="ts">
+  import type { Snippet } from "svelte";
+  import { fade, fly } from "svelte/transition";
+
+  interface Props {
+    children: Snippet;
+    isOpen: boolean;
+  }
+
+  let { children, isOpen = $bindable() }: Props = $props();
+</script>
+
+{#if isOpen}
+  <!-- svelte-ignore a11y_click_events_have_key_events -->
+  <!-- svelte-ignore a11y_no_static_element_interactions -->
+  <div
+    onclick={() => {
+      isOpen = false;
+    }}
+    class="fixed inset-0 flex items-end justify-center"
+  >
+    <div class="absolute inset-0 bg-black bg-opacity-50" transition:fade={{ duration: 100 }}></div>
+    <div
+      onclick={(e) => e.stopPropagation()}
+      class="z-10 flex max-h-[70vh] min-h-[30vh] w-full items-stretch rounded-t-2xl bg-white p-4"
+      transition:fly={{ y: 100, duration: 200 }}
+    >
+      {@render children?.()}
+    </div>
+  </div>
+{/if}

src/lib/components/Modal.svelte

@@ -8,24 +8,19 @@
   }
 
   let { children, isOpen = $bindable() }: Props = $props();
-
-  const closeModal = () => {
-    isOpen = false;
-  };
 </script>
 
 {#if isOpen}
   <!-- svelte-ignore a11y_click_events_have_key_events -->
   <!-- svelte-ignore a11y_no_static_element_interactions -->
   <div
-    onclick={closeModal}
+    onclick={() => {
+      isOpen = false;
+    }}
     class="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 px-2"
+    transition:fade={{ duration: 100 }}
   >
-    <div
-      onclick={(e) => e.stopPropagation()}
-      class="max-w-full rounded-2xl bg-white p-4"
-      transition:fade={{ duration: 100 }}
-    >
+    <div onclick={(e) => e.stopPropagation()} class="max-w-full rounded-2xl bg-white p-4">
       {@render children?.()}
     </div>
   </div>

src/lib/components/index.ts

@@ -1 +1,2 @@
+export { default as BottomSheet } from "./BottomSheet.svelte";
 export { default as Modal } from "./Modal.svelte";

src/lib/hooks/gotoStateful.ts

@@ -3,6 +3,7 @@ import { goto } from "$app/navigation";
 type Path = "/key/export";
 
 interface KeyExportState {
+  redirectPath: string;
   pubKeyBase64: string;
   privKeyBase64: string;
 }

src/routes/(fullscreen)/auth/login/+page.svelte

@@ -1,5 +1,4 @@
 <script lang="ts">
-  import { get } from "svelte/store";
   import { goto } from "$app/navigation";
   import { Button, TextButton } from "$lib/components/buttons";
   import { TitleDiv, BottomDiv } from "$lib/components/divs";
@@ -17,7 +16,7 @@
 
     if (await requestLogin(email, password)) {
       await goto(
-        get(keyPairStore)
+        $keyPairStore
           ? data.redirectPath
           : "/key/generate?redirect=" + encodeURIComponent(data.redirectPath),
       );

src/routes/(fullscreen)/key/export/+page.svelte

@@ -1,31 +1,49 @@
 <script lang="ts">
+  import { saveAs } from "file-saver";
+  import { goto } from "$app/navigation";
   import { Button, TextButton } from "$lib/components/buttons";
   import { BottomDiv } from "$lib/components/divs";
+  import { keyPairStore } from "$lib/stores";
+  import BeforeContinueBottomSheet from "./BeforeContinueBottomSheet.svelte";
   import BeforeContinueModal from "./BeforeContinueModal.svelte";
-  import { requestPubKeyRegistration } from "./service";
+  import {
+    createBlobFromKeyPairBase64,
+    requestPubKeyRegistration,
+    storeKeyPairPersistently,
+  } from "./service";
 
   import IconKey from "~icons/material-symbols/key";
 
   let { data } = $props();
 
   let isBeforeContinueModalOpen = $state(false);
+  let isBeforeContinueBottomSheetOpen = $state(false);
 
   const exportKeyPair = () => {
-    // TODO
-    console.log(data.pubKeyBase64);
-    console.log(data.privKeyBase64);
+    const keyPairBlob = createBlobFromKeyPairBase64(data.pubKeyBase64, data.privKeyBase64);
+    saveAs(keyPairBlob, "arkvalut-keypair.pem");
+
+    if (!isBeforeContinueBottomSheetOpen) {
+      setTimeout(() => {
+        isBeforeContinueBottomSheetOpen = true;
+      }, 1000);
+    }
   };
 
-  const continueWithoutExport = async () => {
-    isBeforeContinueModalOpen = false;
-
-    const ok = await requestPubKeyRegistration(data.pubKeyBase64);
-    if (!ok) {
-      // TODO
-      return;
+  const registerPubKey = async () => {
+    if (!$keyPairStore) {
+      throw new Error("Failed to find key pair");
     }
 
-    // TODO
+    isBeforeContinueModalOpen = false;
+    isBeforeContinueBottomSheetOpen = false;
+
+    if (await requestPubKeyRegistration(data.pubKeyBase64)) {
+      await storeKeyPairPersistently($keyPairStore);
+      await goto(data.redirectPath);
+    } else {
+      // TODO
+    }
   };
 </script>
 
@@ -64,7 +82,9 @@
   </div>
 </div>
 
-<BeforeContinueModal
-  bind:isOpen={isBeforeContinueModalOpen}
-  onContinueClick={continueWithoutExport}
+<BeforeContinueModal bind:isOpen={isBeforeContinueModalOpen} onContinueClick={registerPubKey} />
+<BeforeContinueBottomSheet
+  bind:isOpen={isBeforeContinueBottomSheetOpen}
+  onRetryClick={exportKeyPair}
+  onContinueClick={registerPubKey}
 />

src/routes/(fullscreen)/key/export/BeforeContinueBottomSheet.svelte

@@ -0,0 +1,35 @@
+<script lang="ts">
+  import { BottomSheet } from "$lib/components";
+  import { Button } from "$lib/components/buttons";
+  import { BottomDiv } from "$lib/components/divs";
+
+  interface Props {
+    onRetryClick: () => void;
+    onContinueClick: () => void;
+    isOpen: boolean;
+  }
+
+  let { onRetryClick, onContinueClick, isOpen = $bindable() }: Props = $props();
+</script>
+
+<BottomSheet bind:isOpen>
+  <div class="flex flex-col justify-between space-y-4">
+    <div class="space-y-2">
+      <p class="break-keep text-xl font-bold">암호 키 파일을 저장하셨나요?</p>
+      <p class="break-keep">
+        보안상의 이유로 지금 시점 이후로는 암호 키를 파일로 내보낼 수 없어요. 파일이 저장되었는지
+        다시 확인해 주세요.
+      </p>
+    </div>
+    <BottomDiv>
+      <div class="flex w-full gap-2">
+        <div class="w-full">
+          <Button color="gray" onclick={onRetryClick}>다시 저장할래요</Button>
+        </div>
+        <div class="w-full">
+          <Button onclick={onContinueClick}>잘 저장되었어요</Button>
+        </div>
+      </div>
+    </BottomDiv>
+  </div>
+</BottomSheet>

src/routes/(fullscreen)/key/export/BeforeContinueModal.svelte

@@ -23,8 +23,10 @@
         color="gray"
         onclick={() => {
           isOpen = false;
-        }}>아니요</Button
+        }}
       >
+        아니요
+      </Button>
       <Button onclick={onContinueClick}>계속합니다</Button>
     </div>
   </div>

src/routes/(fullscreen)/key/export/service.ts

@@ -1,4 +1,17 @@
 import { callAPI } from "$lib/hooks";
+import { storeKeyPairIntoIndexedDB } from "$lib/indexedDB";
+
+export const createBlobFromKeyPairBase64 = (pubKeyBase64: string, privKeyBase64: string) => {
+  const pubKeyFormatted = pubKeyBase64.match(/.{1,64}/g)?.join("\n");
+  const privKeyFormatted = privKeyBase64.match(/.{1,64}/g)?.join("\n");
+  if (!pubKeyFormatted || !privKeyFormatted) {
+    throw new Error("Failed to format key pair");
+  }
+
+  const pubKeyPem = `-----BEGIN PUBLIC KEY-----\n${pubKeyFormatted}\n-----END PUBLIC KEY-----`;
+  const privKeyPem = `-----BEGIN PRIVATE KEY-----\n${privKeyFormatted}\n-----END PRIVATE KEY-----`;
+  return new Blob([`${pubKeyPem}\n${privKeyPem}\n`], { type: "text/plain" });
+};
 
 export const requestPubKeyRegistration = async (pubKeyBase64: string) => {
   const res = await callAPI("/api/key/register", {
@@ -10,3 +23,7 @@ export const requestPubKeyRegistration = async (pubKeyBase64: string) => {
   });
   return res.ok;
 };
+
+export const storeKeyPairPersistently = async (keyPair: CryptoKeyPair) => {
+  await storeKeyPairIntoIndexedDB(keyPair.publicKey, keyPair.privateKey);
+};

src/routes/(fullscreen)/key/generate/+page.svelte

@@ -1,12 +1,16 @@
 <script lang="ts">
+  import { goto } from "$app/navigation";
   import { Button, TextButton } from "$lib/components/buttons";
   import { TitleDiv, BottomDiv } from "$lib/components/divs";
   import { gotoStateful } from "$lib/hooks";
+  import { keyPairStore } from "$lib/stores";
   import Order from "./Order.svelte";
   import { generateKeyPair } from "./service";
 
   import IconKey from "~icons/material-symbols/key";
 
+  let { data } = $props();
+
   const orders = [
     {
       title: "암호 키는 공개 키와 개인 키로 구성돼요.",
@@ -27,9 +31,21 @@
   ];
 
   const generate = async () => {
-    // TODO
-    await gotoStateful("/key/export", await generateKeyPair());
+    // TODO: Loading indicator
+
+    const keyPair = await generateKeyPair();
+    await gotoStateful("/key/export", {
+      redirectPath: data.redirectPath,
+      pubKeyBase64: keyPair.pubKeyBase64,
+      privKeyBase64: keyPair.privKeyBase64,
+    });
   };
+
+  $effect(() => {
+    if ($keyPairStore) {
+      goto(data.redirectPath);
+    }
+  });
 </script>
 
 <svetle:head>

src/routes/(fullscreen)/key/generate/+page.ts

@@ -0,0 +1,6 @@
+import type { PageLoad } from "./$types";
+
+export const load: PageLoad = async ({ url }) => {
+  const redirectPath = url.searchParams.get("redirect") || "/";
+  return { redirectPath };
+};