// ============================================================
// 登录页面
// ============================================================

import { useState } from 'react'
import { useNavigate, useSearchParams } from 'react-router-dom'
import { LoginForm, ProFormText } from '@ant-design/pro-components'
import { LockOutlined, UserOutlined, SafetyOutlined } from '@ant-design/icons'
import { message } from 'antd'
import { authService } from '@/services/auth'
import { useAuthStore } from '@/stores/authStore'
import type { LoginRequest } from '@/types'

export default function Login() {
  const navigate = useNavigate()
  const [searchParams] = useSearchParams()
  const loginStore = useAuthStore((s) => s.login)
  const [needTotp, setNeedTotp] = useState(false)
  const [loading, setLoading] = useState(false)

  const handleSubmit = async (values: Record<string, string>) => {
    setLoading(true)
    try {
      const data: LoginRequest = {
        username: values.username?.trim() || '',
        password: values.password || '',
        totp_code: values.totp_code?.trim() || undefined,
      }

      const res = await authService.login(data)
      loginStore(res.account)

      message.success('登录成功')
      const from = searchParams.get('from') || '/'
      navigate(from, { replace: true })
    } catch (err: unknown) {
      const error = err as { message?: string; status?: number }
      const msg = error.message || ''
      if (msg.includes('TOTP') || msg.includes('totp') || msg.includes('2FA') || msg.includes('验证码') || error.status === 403) {
        setNeedTotp(true)
        message.warning(msg || '请输入两步验证码')
      } else {
        message.error(msg || '登录失败，请检查用户名和密码')
      }
    } finally {
      setLoading(false)
    }
  }

  return (
    <div className="min-h-screen flex">
      {/* Left Brand Panel — hidden on mobile */}
      <div className="hidden md:flex flex-1 flex-col items-center justify-center relative overflow-hidden"
        style={{ background: 'linear-gradient(135deg, #0c0a09 0%, #1c1917 40%, #292524 100%)' }}
      >
        {/* Decorative gradient orb */}
        <div
          className="absolute w-[400px] h-[400px] rounded-full opacity-20 blur-3xl"
          style={{ background: 'linear-gradient(135deg, #863bff, #47bfff)', top: '20%', left: '10%' }}
        />
        <div
          className="absolute w-[300px] h-[300px] rounded-full opacity-10 blur-3xl"
          style={{ background: 'linear-gradient(135deg, #47bfff, #863bff)', bottom: '10%', right: '15%' }}
        />

        {/* Brand content */}
        <div className="relative z-10 text-center px-8">
          <div
            className="inline-flex items-center justify-center w-16 h-16 rounded-2xl mb-6"
            style={{ background: 'linear-gradient(135deg, #863bff, #47bfff)' }}
          >
            <span className="text-white text-2xl font-bold">Z</span>
          </div>
          <h1 className="text-4xl font-bold text-white mb-3 tracking-tight">ZCLAW</h1>
          <p className="text-white/50 text-base mb-8">AI Agent 管理平台</p>
          <div className="w-16 h-px mx-auto mb-8" style={{ background: 'linear-gradient(90deg, transparent, #863bff, #47bfff, transparent)' }} />
          <p className="text-white/30 text-sm max-w-sm mx-auto leading-relaxed">
            统一管理 AI 服务商、模型配置、API 密钥、用量监控与系统配置
          </p>
        </div>
      </div>

      {/* Right Login Form */}
      <div className="flex-1 md:flex-none md:w-[480px] flex items-center justify-center p-8 bg-white dark:bg-neutral-950">
        <div className="w-full max-w-[360px]">
          {/* Mobile logo (visible only on mobile) */}
          <div className="md:hidden flex items-center gap-3 mb-10">
            <div
              className="flex items-center justify-center w-10 h-10 rounded-xl"
              style={{ background: 'linear-gradient(135deg, #863bff, #47bfff)' }}
            >
              <span className="text-white font-bold">Z</span>
            </div>
            <span className="text-xl font-bold text-neutral-900 dark:text-white">ZCLAW</span>
          </div>

          <h2 className="text-2xl font-semibold text-neutral-900 dark:text-white mb-1">
            登录
          </h2>
          <p className="text-sm text-neutral-500 dark:text-neutral-400 mb-8">
            输入您的账号信息以继续
          </p>

          <LoginForm
            onFinish={handleSubmit}
            submitter={{
              searchConfig: { submitText: '登录' },
              submitButtonProps: {
                loading,
                block: true,
                style: {
                  height: 44,
                  borderRadius: 8,
                  fontWeight: 500,
                  fontSize: 15,
                  background: 'linear-gradient(135deg, #863bff, #47bfff)',
                  border: 'none',
                },
              },
            }}
          >
            <ProFormText
              name="username"
              fieldProps={{
                size: 'large',
                prefix: <UserOutlined />,
                autoComplete: 'username',
              }}
              placeholder="请输入用户名"
              rules={[{ required: true, message: '请输入用户名' }]}
            />
            <ProFormText.Password
              name="password"
              fieldProps={{
                size: 'large',
                prefix: <LockOutlined />,
                autoComplete: 'current-password',
              }}
              placeholder="请输入密码"
              rules={[{ required: true, message: '请输入密码' }]}
            />
            {needTotp && (
              <ProFormText
                name="totp_code"
                fieldProps={{
                  size: 'large',
                  prefix: <SafetyOutlined />,
                  maxLength: 6,
                  autoComplete: 'one-time-code',
                }}
                placeholder="请输入 6 位验证码"
                rules={[{ required: true, message: '请输入验证码' }]}
              />
            )}
          </LoginForm>
        </div>
      </div>
    </div>
  )
}