import { http } from '@/api/http'
import type { ResourceNode } from '@/types/resource'

export interface LoginSuccess {
  accessToken: string
  refreshToken: string
  expiresIn: number
  mustChangePassword: boolean
}

export interface LoginNeedTenant {
  needSelectTenant: true
  tenants: { tenantCode: string; tenantName: string }[]
}

export type LoginResult = LoginSuccess | LoginNeedTenant

/** 登录：缺省 tenantCode 时按用户名自动探测；多租户返回 needSelectTenant。 */
export function login(username: string, password: string, tenantCode?: string): Promise<LoginResult> {
  return http.post<LoginResult>('/auth/login', { username, password, ...(tenantCode ? { tenantCode } : {}) })
}

/** 当前用户菜单树。 */
export function fetchMenus(): Promise<ResourceNode[]> {
  return http.get<ResourceNode[]>('/auth/menus')
}

/** 当前用户权限码与超管标志（供按钮/路由级权限控制）。 */
export function fetchPermissions(): Promise<{ super: boolean; permissions: string[] }> {
  return http.get<{ super: boolean; permissions: string[] }>('/auth/permissions')
}

/** 注册账号。 */
export function register(data: {
  tenantCode: string
  username: string
  password: string
  email?: string
  phone?: string
}): Promise<{ id: string; username: string }> {
  return http.post<{ id: string; username: string }>('/auth/register', data)
}

/** 修改本人密码。 */
export function changePassword(oldPassword: string, newPassword: string): Promise<unknown> {
  return http.patch('/auth/me/password', { oldPassword, newPassword })
}

export interface TenantBrand {
  name: string
  brandName: string | null
  logoUrl: string | null
  themeColor: string | null
  copyright: string | null
}

/** 当前租户品牌。 */
export function fetchBrand(signal?: AbortSignal): Promise<TenantBrand> {
  return http.get<TenantBrand>('/auth/brand', { signal })
}

export interface SwitchTenantResult {
  accessToken: string
  refreshToken: string
  expiresIn: number
  tenantCode: string
  tenantName: string
}

/** 平台超管切换租户。 */
export function switchTenant(tenantCode: string): Promise<SwitchTenantResult> {
  return http.post<SwitchTenantResult>('/auth/switch-tenant', { tenantCode })
}