[+] Accounts and login

src/components/status/Dialog.svelte

@@ -9,12 +9,13 @@
       text: string,
       onclick: () => void
     }[]
-    open: boolean
+    open: boolean,
+    noClose?: boolean
   } = $props()
 
-  let buttons = $derived(p.buttons ?? [{
+  let buttons = $derived([...(p.buttons ?? []), ...(p.noClose ? [] : [{
     text: '关闭', onclick: () => open = false
-  }])
+  }])])
 </script>
 
 {#if open}

src/components/status/ErrorDialog.svelte

@@ -11,7 +11,7 @@
 <Dialog title="错误" bind:open buttons={[{
   text: "刷新重试",
   onclick: () => location.reload()
-}]}>
+}]} noClose>
   <div class="text-red-500">
     {p.error}
   </div>

src/lib/client.ts

@@ -9,7 +9,7 @@ export async function post(endpoint: string, data: any) {
             'Content-Type': 'application/json'
         }
     }).then(async res => {
-        if (res.status >= 400) throw new Error(`错误 ${res.status}：${await res.text()}`)
+        if (res.status >= 400) throw new Error(`${res.status}: ${await res.json().then(json => json['message'])}`)
         return res.json()
     }).catch(e => {
         console.error(e)
@@ -25,5 +25,10 @@ export const API = {
     netease: {
         startImport: async (link: string) => await post('/api/import/netease/start', { link }),
         checkProgress: async (id: string) => await post('/api/import/netease/progress', { id })
+    },
+
+    user: {
+        createSyncCode: async () => await post('/api/user/sync-code', {}),
+        loginWithSyncCode: async (code: string) => await post('/api/auth/login', { code })
     }
 }

src/lib/server/user.ts

@@ -52,4 +52,34 @@ export async function createSyncCode(session: string): Promise<string> {
 export async function updateUserData(user: UserDocument, data: Partial<UserData>): Promise<void> {
   const newData = { ...(user.data || {}), ...data }
   await users.updateOne({ _id: user._id }, { $set: { data: newData } })
+}
+
+/**
+ * Login with sync code.
+ * @param code Sync code
+ * @param newUA User Agent of the new device
+ * @returns New session token
+ */
+export async function loginWithSyncCode(code: string, newUA: string): Promise<string> {
+  const user = await users.findOne({ syncCode: code })
+  if (!user) throw error(401, 'Invalid sync code')
+
+  // Check expiration (7 days)
+  if (user.syncCodeCreated && (Date.now() - user.syncCodeCreated.getTime() > 7 * 24 * 60 * 60 * 1000)) {
+    await users.updateOne({ _id: user._id }, { $unset: { syncCode: "", syncCodeCreated: "" } })
+    throw error(401, 'Sync code expired')
+  }
+
+  const ses = `${crypto.randomUUID()}-${Date.now().toString(36)}`
+
+  // Add new session and clear sync code (one-time use)
+  await users.updateOne(
+    { _id: user._id },
+    {
+      $push: { sessions: ses },
+      $unset: { syncCode: "", syncCodeCreated: "" }
+    }
+  )
+
+  return ses
 }

src/routes/+page.svelte

@@ -5,6 +5,7 @@
   import type { PageProps } from "./$types";
   import Button from "../components/Button.svelte";
     import { Layer } from "m3-svelte";
+    import { goto } from "$app/navigation";
 
   let { data }: PageProps = $props()
 
@@ -15,7 +16,7 @@
 </script>
 
 
-<AppBar account={() => alert('Account clicked')} right={[
+<AppBar account={() => goto('/user')} right={[
   {icon: "i-material-symbols:settings-rounded", onclick: () => alert('Settings clicked')}
 ]} />
 

src/routes/api/auth/login/+server.ts

@@ -0,0 +1,21 @@
+import { error, json } from '@sveltejs/kit'
+import { loginWithSyncCode } from '$lib/server/user'
+import type { RequestHandler } from './$types'
+
+export const POST: RequestHandler = async ({ request, cookies }) => {
+  const { code } = await request.json()
+  if (!code) throw error(400, 'Missing sync code')
+
+  const ua = request.headers.get('user-agent') || 'unknown'
+  const session = await loginWithSyncCode(code, ua)
+  
+  // Set session cookie
+  cookies.set('session', session, {
+      path: '/',
+      httpOnly: true,
+      sameSite: 'strict',
+      maxAge: 60 * 60 * 24 * 365 // 1 year
+  })
+
+  return json({ success: true })
+}

src/routes/api/user/sync-code/+server.ts

@@ -0,0 +1,11 @@
+import { error, json } from '@sveltejs/kit'
+import { createSyncCode } from '$lib/server/user'
+import type { RequestHandler } from './$types'
+
+export const POST: RequestHandler = async ({ cookies }) => {
+  const session = cookies.get('session')
+  if (!session) throw error(401, 'Unauthorized')
+
+  const code = await createSyncCode(session)
+  return json({ code })
+}

src/routes/user/+page.svelte

@@ -1,17 +1,43 @@
 <script lang="ts">
-    import { TextFieldOutlined } from "m3-svelte";
-  import AppBar from "../../components/appbar/AppBar.svelte";
-  import Button from "../../components/Button.svelte";
-  import Dialog from "../../components/status/Dialog.svelte";
+  import { TextFieldOutlined } from "m3-svelte"
+  import AppBar from "../../components/appbar/AppBar.svelte"
+  import Button from "../../components/Button.svelte"
+  import Dialog from "../../components/status/Dialog.svelte"
+  import { API } from "$lib/client"
+  import ErrorDialog from "../../components/status/ErrorDialog.svelte"
 
-  let open = $state(false)
+  let showCodeOpen = $state(false)
+  let loginSuccessOpen = $state(false)
   let loginMode = $state(false)
   let loginCode = $state('')
+  let generatedCode = $state('')
+  let error = $state('')
+
+  const generateCode = async () => await API.user.createSyncCode()
+    .then(res => {
+      generatedCode = res.code
+      showCodeOpen = true
+    }).catch(e => error = e.message)
+
+  const doLogin = async () => await API.user.loginWithSyncCode(loginCode)
+    .then(() => loginSuccessOpen = true).catch(e => error = e.message)
 </script>
 
-<Dialog title="生成引继码" bind:open>引继码生成成功！生成的引继码是：01234-56789-ABCDE-F0123
+<ErrorDialog error={error}/>
+
+<Dialog title="登录成功" bind:open={loginSuccessOpen} buttons={[{
+  text: '跳转', onclick: () => location.href = '/'
+}]}>
+  登录成功！
+</Dialog>
+
+<Dialog title="生成引继码" bind:open={showCodeOpen} buttons={[{
+  text: '复制', onclick: () => navigator.clipboard.writeText(generatedCode)
+}]}>
+  引继码生成成功！生成的引继码是：{generatedCode}
   <br><br>
-这个引继码将会在使用之后、或者未使用的 7 天后会失效</Dialog>
+  这个引继码将会在使用之后、或者未使用的 7 天后会失效
+</Dialog>
 
 <AppBar title="账号管理"/>
 
@@ -30,15 +56,13 @@
   </div>
 {/if}
 
-<div class="vbox gap-16px flex-1 min-h-0">
-    
-</div>
+<div class="vbox gap-16px flex-1 min-h-0"></div>
 
 <div class="hbox p-16px gap-16px">
   {#if !loginMode}
-    <Button big secondary icon="i-material-symbols:add" disabled={open} onclick={() => open = true}>生成引继码</Button>
-    <Button big secondary icon="i-material-symbols:login" disabled={open} onclick={() => loginMode = true}>用引继码登录</Button>
+    <Button big secondary icon="i-material-symbols:add" disabled={showCodeOpen} onclick={generateCode}>生成引继码</Button>
+    <Button big secondary icon="i-material-symbols:login" disabled={showCodeOpen} onclick={() => loginMode = true}>用引继码登录</Button>
   {:else}
-    <Button big secondary icon="i-material-symbols:login" disabled={open} onclick={() => alert("TODO")}>登录</Button>
+    <Button big secondary icon="i-material-symbols:login" disabled={showCodeOpen} onclick={doLogin}>登录</Button>
   {/if}
 </div>