import React, { useState } from "react"
import { useMutation } from "@tanstack/react-query"
import { Button } from "@workspace/ui/components/button"
import { Input } from "@workspace/ui/components/input"
import { EyeIcon, EyeOffIcon } from "@workspace/ui/components/icon"
import { cn } from "@workspace/ui/lib/utils"
import { ThemeToggleButton } from "@workspace/blocks/blocks/appearance"
import { Logo } from "@/components/logo"

export function LoginPage() {
  return (
    <div className="isolate h-svh min-h-148 w-svw lg:min-h-164.5">
      <header className="relative z-10 h-0">
        <div className="flex h-14 items-center justify-between px-6">
          <div className="size-6 opacity-0 lg:opacity-100">
            <Logo />
          </div>
          <div>
            <ThemeToggleButton />
          </div>
        </div>
      </header>
      <main className="relative isolate flex size-full before:pointer-events-none before:absolute before:inset-0 before:-z-1 before:bg-[url(https://pub-c5e31b5cdafb419fb247a8ac2e78df7a.r2.dev/public/assets/background/background-3-blur.webp)] before:bg-cover before:bg-center before:bg-no-repeat before:opacity-20">
        <div className="pointer-events-none hidden w-120 flex-col justify-center gap-16 bg-linear-to-r from-secondary/10 to-muted/20 p-6 pt-18 select-none lg:flex">
          <div className="text-center">
            <h2 className="text-3xl font-bold tracking-tight text-foreground">
              欢迎回来 👋🏻
            </h2>
            <p className="mt-4 text-muted-foreground">
              让商品、订单与运营管理更简单高效。
            </p>
          </div>
          <img
            src="https://pub-c5e31b5cdafb419fb247a8ac2e78df7a.r2.dev/public/assets/illustrations/illustration-dashboard.webp"
            alt=""
            className="aspect-4/3 w-full object-cover object-center"
          />
          <Features />
        </div>
        <div className="flex flex-1 flex-col items-start gap-7 bg-sidebar/80 px-6 py-20 lg:justify-center lg:px-8">
          <div className="mx-auto mb-10 w-full max-w-md lg:hidden">
            <Logo className="size-12" />
          </div>
          <LoginForm />
          <div className="lg:h-24" />
        </div>
      </main>
    </div>
  )
}

const features = [
  {
    label: "Jwt",
    img: "https://pub-c5e31b5cdafb419fb247a8ac2e78df7a.r2.dev/public/assets/icons/platforms/ic-jwt.svg",
  },
  {
    label: "Firebase",
    img: "https://pub-c5e31b5cdafb419fb247a8ac2e78df7a.r2.dev/public/assets/icons/platforms/ic-firebase.svg",
  },
  {
    label: "Amplify",
    img: "https://pub-c5e31b5cdafb419fb247a8ac2e78df7a.r2.dev/public/assets/icons/platforms/ic-amplify.svg",
  },
  {
    label: "Auth0",
    img: "https://pub-c5e31b5cdafb419fb247a8ac2e78df7a.r2.dev/public/assets/icons/platforms/ic-auth0.svg",
  },
  {
    label: "Supabase",
    img: "https://pub-c5e31b5cdafb419fb247a8ac2e78df7a.r2.dev/public/assets/icons/platforms/ic-supabase.svg",
  },
]

function Features() {
  const [index, setIndex] = React.useState(0)

  React.useEffect(() => {
    const timerId = setInterval(() => {
      setIndex((currentIndex) => (currentIndex + 1) % features.length)
    }, 1000)

    return () => {
      clearInterval(timerId)
    }
  }, [])

  return (
    <ul className="flex items-center justify-center gap-4">
      {features.map((f, i) => (
        <li
          key={f.label}
          className={cn(
            "transition-[filter] duration-1000 ease-linear",
            i === index ? "grayscale-0" : "grayscale-100"
          )}
        >
          <img className="size-8" alt={f.label} src={f.img} />
        </li>
      ))}
    </ul>
  )
}

function LoginForm() {
  // const navigate = useNavigate()
  const [username, setUsername] = useState("")
  const [password, setPassword] = useState("")

  const mutation = useMutation({
    // mutationFn: () => {
    //   return api.post<AdminAuthResponse>("/api/v1/admin/auth/login", {
    //     username,
    //     password,
    //   })
    // },
    // onSuccess: () => {
    //   login()
    //   Toast("登录成功", "success")
    //   navigate("/", { replace: true })
    // },
    // onError: (err: Error) => toast(err.message || "登录失败", "error"),
  })

  return (
    <div className="mx-auto w-full max-w-md">
      <h5 className="mb-3 text-2xl font-bold tracking-tight text-foreground">
        账号登录
      </h5>
      <p className="lg:text-md text-sm text-muted-foreground">
        <span className="text-muted-foreground">
          请输入您的帐户信息以开始管理您的系统
        </span>
      </p>
      <form
        className="mt-8 space-y-8"
        onSubmit={(e) => {
          e.preventDefault()
          mutation.mutate()
        }}
      >
        <Field
          label="用户名"
          inputId="username"
          Component={UsernameInput}
          value={username}
          setValue={setUsername}
        />
        <Field
          label="密码"
          inputId="password"
          Component={PasswordInput}
          value={password}
          setValue={setPassword}
        />
        <Button
          type="submit"
          className="mt-2 h-12 w-full rounded-lg"
          disabled={mutation.isPending}
        >
          {mutation.isPending ? "登录中..." : "登录"}
        </Button>
      </form>
    </div>
  )
}

type FieldInputProps = {
  inputId: string
  className?: string
  value: string
  setValue: React.Dispatch<React.SetStateAction<string>>
}

type FieldInputComponent = React.ComponentType<FieldInputProps>

function Field({
  label,
  Component,
  ...props
}: Omit<FieldInputProps, "className"> & {
  label: string
  Component: FieldInputComponent
}) {
  return (
    <fieldset className="relative flex h-12 items-center rounded-lg border-2 border-border p-0 focus-within:border-accent focus-within:[&_label]:opacity-100">
      <legend className="ml-2 flex h-0 px-0">
        <label
          className="h-fit -translate-y-1/2 px-1 text-sm opacity-50"
          htmlFor={props.inputId}
        >
          {label}
        </label>
      </legend>
      <Component
        className="h-full rounded-none border-none bg-transparent outline-none autofill:bg-transparent focus-visible:border-none focus-visible:ring-0 [&:-webkit-autofill]:[-webkit-background-clip:text] [&:-webkit-autofill]:[-webkit-text-fill-color:var(--foreground)] [&:-webkit-autofill]:[transition:background-color_9999s_ease-out]"
        {...props}
      />
    </fieldset>
  )
}

function UsernameInput({
  inputId,
  className,
  value,
  setValue,
}: FieldInputProps) {
  return (
    <Input
      id={inputId}
      value={value}
      className={className}
      onChange={(e) => setValue(e.target.value)}
      placeholder="请输入用户名"
      required
    />
  )
}

function PasswordInput({
  inputId,
  className,
  value,
  setValue,
}: FieldInputProps) {
  const [isVisible, setVisile] = React.useState(false)

  return (
    <>
      <Input
        id={inputId}
        type={isVisible ? "text" : "password"}
        value={value}
        className={cn("relative z-1 pe-24", className)}
        onChange={(e) => setValue(e.target.value)}
        placeholder="请输入登录密码"
        required
      />
      <div className="absolute top-0 right-0 z-2 flex h-11 w-11 items-center justify-center">
        <Button
          type="button"
          variant="ghost"
          size="icon"
          onClick={(e) => {
            e.stopPropagation()
            e.preventDefault()
            setVisile((v) => !v)
          }}
          className="rounded-sm"
        >
          {isVisible ? <EyeIcon /> : <EyeOffIcon />}
        </Button>
      </div>
    </>
  )
}