feat(lr): 懒人听书平台接入——App 通道搜索、web 章节列表、账密登录取流

sdk/lr/auth.ts

@@ -0,0 +1,51 @@
+// 懒人听书登录（web 通道 m.lrts.me/ajax/logon）
+// 参考社区下载器（yoval/lrts 等）：POST form {account, pwd: base64(password)}，
+// 成功响应 json.phone 非空，Set-Cookie 种下会话；取流接口必须携带该会话
+// （免费章节匿名也返回"收费章节未购买"，2026-10-02 实测）。
+import { httpFetch } from '../request.ts'
+import { getCredentials, setCredentials } from '../auth/store.ts'
+
+const UA_MI = 'Mozilla/5.0 (Linux; U; Android 4.1.1; zh-cn; MI2 Build/JRO03L) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 XiaoMi/MiuiBrowser/1.0'
+const LOGON_URL = 'https://m.lrts.me/ajax/logon'
+
+/** 账号密码登录（成功保存会话 Cookie） */
+export const login = async({ account, password }: { account: string, password: string }) => {
+  const form = `account=${encodeURIComponent(account)}&pwd=${Buffer.from(String(password), 'utf8').toString('base64')}`
+  const { statusCode, body, headers } = await httpFetch(LOGON_URL, {
+    method: 'post',
+    headers: {
+      'User-Agent': UA_MI,
+      Referer: 'https://m.lrts.me/',
+      'Content-Type': 'application/x-www-form-urlencoded',
+    },
+    body: form,
+    timeout: 15000,
+  }).promise as any
+  const b = body ?? {}
+  if (statusCode != 200 || !b.phone) {
+    const err = new Error(b.msg || '登录失败（账号或密码错误）')
+    ;(err as any).status = 401
+    throw err
+  }
+  const setCookies = (headers as any)?.['set-cookie'] ?? []
+  const cookie = (Array.isArray(setCookies) ? setCookies : [setCookies])
+    .map((c: string) => String(c).split(';')[0].trim())
+    .filter(Boolean)
+    .join('; ')
+  if (!cookie) throw new Error('登录成功但未返回会话 Cookie')
+  setCredentials('lr', { cookie, phone: String(b.phone) })
+  return { logged: true, phone: String(b.phone) }
+}
+
+/** 登录会话 Cookie（未登录返回空串） */
+export const getLrCookie = (): string => (getCredentials('lr') as any)?.cookie || ''
+
+/** 登录状态 */
+export const status = () => {
+  const cred = getCredentials('lr') as { cookie?: string, phone?: string, updatedAt?: string } | null
+  return cred?.cookie
+    ? { logged: true, phone: cred.phone, updatedAt: cred.updatedAt }
+    : { logged: false }
+}
+
+export default { login, getLrCookie, status }