import { cookies } from 'next/headers'

const ADMIN_PASSWORD = 'HelloWorld'
const ADMIN_SESSION_COOKIE = 'admin_session'

// Check if admin is authenticated
export async function isAdminAuthenticated(): Promise<boolean> {
  try {
    const cookieStore = await cookies()
    const session = cookieStore.get(ADMIN_SESSION_COOKIE)?.value
    return session === 'authenticated'
  } catch (error) {
    return false
  }
}

// Verify admin password
export function verifyAdminPassword(password: string): boolean {
  return password === ADMIN_PASSWORD
}

// Set admin session
export async function setAdminSession(): Promise<void> {
  const cookieStore = await cookies()
  cookieStore.set(ADMIN_SESSION_COOKIE, 'authenticated', {
    httpOnly: true,
    secure: process.env.NODE_ENV === 'production',
    sameSite: 'lax',
    maxAge: 60 * 60 * 24, // 24 hours
  })
}

// Clear admin session
export async function clearAdminSession(): Promise<void> {
  const cookieStore = await cookies()
  cookieStore.delete(ADMIN_SESSION_COOKIE)
}

// Get admin session from request (for API routes)
export function getAdminSessionFromRequest(request: Request): boolean {
  try {
    const cookieHeader = request.headers.get('cookie')
    if (!cookieHeader) {
      return false
    }

    const cookies = cookieHeader.split(';').reduce((acc, cookie) => {
      const [key, value] = cookie.trim().split('=')
      acc[key] = value
      return acc
    }, {} as Record<string, string>)

    return cookies[ADMIN_SESSION_COOKIE] === 'authenticated'
  } catch (error) {
    return false
  }
}