import { zodResolver } from "@hookform/resolvers/zod"
import { useState } from "react"
import { Controller, useForm } from "react-hook-form"
import { toast } from "sonner"
import { z } from "zod"
import { submitRealName } from "@/api/agreement"
import { QrCodeImage } from "@/components/qrCodeImage"
import { Button } from "@/components/ui/button"
import {
  Dialog,
  DialogContent,
  DialogFooter,
  DialogHeader,
  DialogTitle,
} from "@/components/ui/dialog"
import { FieldError } from "@/components/ui/field"
import { Input } from "@/components/ui/input"
import { Label } from "@/components/ui/label"

const realNameSchema = z.object({
  name: z.string().trim().min(1, "请输入真实姓名"),
  idCode: z
    .string()
    .trim()
    .regex(/^\d{15}$|^\d{18}$|^\d{17}(\d|X|x)$/, "身份证号码不合法"),
})

type RealNameValues = z.infer<typeof realNameSchema>

export default function RealNameDialog({
  open,
  onOpenChange,
  onVerified,
  mandatory = false,
}: {
  open: boolean
  onOpenChange: (open: boolean) => void
  onVerified: () => void
  /** 强制模式：不可关闭，直到完成实名认证（由外层 Gate 在认证成功后卸载） */
  mandatory?: boolean
}) {
  const [stage, setStage] = useState<"form" | "scan">("form")
  const [qrUrl, setQrUrl] = useState("")
  const [submitting, setSubmitting] = useState(false)

  const form = useForm<RealNameValues>({
    resolver: zodResolver(realNameSchema),
    defaultValues: { name: "", idCode: "" },
  })

  const handleOpenChange = (next: boolean) => {
    if (!next && mandatory) return
    onOpenChange(next)
    if (!next) {
      form.reset({ name: "", idCode: "" })
      setStage("form")
      setQrUrl("")
    }
  }

  const handleFinish = () => {
    onVerified()
    if (!mandatory) onOpenChange(false)
  }

  const onSubmit = async (data: RealNameValues) => {
    setSubmitting(true)
    const res = await submitRealName({
      idCode: data.idCode,
      name: data.name,
    })
    setSubmitting(false)

    if (!res.success) {
      toast.error(res.message)
      return
    }

    const { code, url } = res.data
    if (code === 20000) {
      toast.success("已经认证成功")
      handleFinish()
      return
    }
    if (code === 30000) {
      toast.error("该身份已经进行认证，无法再次进行认证，请联系在线客服处理")
      return
    }
    if (code === -10000) {
      toast.error("接口问题，请联系客服")
      return
    }
    if (code === 10000 && url) {
      setQrUrl(url)
      setStage("scan")
      return
    }
    toast.error("请正确填写姓名和身份证号码")
  }

  return (
    <Dialog open={open} onOpenChange={handleOpenChange}>
      <DialogContent
        className="max-h-[85dvh] overflow-y-auto sm:max-w-lg"
        showCloseButton={!mandatory}
        onEscapeKeyDown={mandatory ? e => e.preventDefault() : undefined}
        onPointerDownOutside={mandatory ? e => e.preventDefault() : undefined}
      >
        {stage === "form" ? (
          <>
            <DialogHeader>
              <DialogTitle className="text-xl font-semibold text-blue-600">
                尊敬的用户，您还未进行实名认证！
              </DialogTitle>
            </DialogHeader>

            <div className="max-h-56 overflow-y-auto space-y-2 rounded-lg bg-gray-50 p-4 text-xs leading-5 text-gray-600">
              <p>
                《中华人民共和国网络安全法》第二十四条规定：
                <br />
                网络运营者为用户办理网络接入、域名注册服务，办理固定电话、移动电话等入网手续，或者为用户提供信息发布、即时通讯等服务，在与用户签订协议或者确认提供服务时，应当要求用户提供真实身份信息。用户不提供真实身份信息的，网络运营者不得为其提供相关服务。
              </p>
              <p className="text-red-500">
                1、为了你的帐号安全请勿使用他人手机号或身份信息
              </p>
              <p>
                2、聚IP承诺：用户的个人隐私数据仅与国家公安一所信息库比对，本公司不调用及储存用户的实人认证数据，仅接收公安一所方面的实人认证结果！
              </p>
              <p>3、若您扫脸认证不成功，请联系客服</p>
            </div>

            <form
              className="space-y-4"
              onSubmit={form.handleSubmit(onSubmit)}
              noValidate
            >
              <div className="space-y-1.5">
                <Label className="text-sm text-gray-600">真实姓名</Label>
                <Controller
                  name="name"
                  control={form.control}
                  render={({ field, fieldState }) => (
                    <>
                      <Input
                        {...field}
                        placeholder="请输入真实姓名"
                        className="h-11 bg-gray-50 border-gray-200"
                      />
                      <FieldError>{fieldState.error?.message}</FieldError>
                    </>
                  )}
                />
              </div>

              <div className="space-y-1.5">
                <Label className="text-sm text-gray-600">身份证号</Label>
                <Controller
                  name="idCode"
                  control={form.control}
                  render={({ field, fieldState }) => (
                    <>
                      <Input
                        {...field}
                        placeholder="请输入身份证号码"
                        className="h-11 bg-gray-50 border-gray-200"
                      />
                      <FieldError>{fieldState.error?.message}</FieldError>
                    </>
                  )}
                />
              </div>

              <DialogFooter className="gap-3">
                {!mandatory && (
                  <Button
                    type="button"
                    variant="outline"
                    onClick={() => handleOpenChange(false)}
                  >
                    取消
                  </Button>
                )}
                <Button
                  type="submit"
                  disabled={submitting}
                  className="bg-linear-to-r from-blue-500 to-cyan-400 text-white hover:opacity-90"
                >
                  {submitting ? "认证中..." : "确认"}
                </Button>
              </DialogFooter>
            </form>
          </>
        ) : (
          <>
            <DialogHeader>
              <DialogTitle className="text-xl font-semibold text-blue-600">
                请打开微信扫码进行认证
              </DialogTitle>
            </DialogHeader>

            <p className="text-center text-sm text-gray-600">
              若扫脸后仍未认证成功，请联系客服
            </p>

            <div className="flex justify-center py-2">
              <div className="rounded-lg border border-gray-200 p-2">
                <QrCodeImage text={qrUrl} size={240} />
              </div>
            </div>

            <DialogFooter className="gap-3">
              {!mandatory && (
                <Button
                  variant="outline"
                  onClick={() => handleOpenChange(false)}
                >
                  取消
                </Button>
              )}
              <Button
                onClick={handleFinish}
                className="bg-linear-to-r from-blue-500 to-cyan-400 text-white hover:opacity-90"
              >
                实名扫脸结束后请点击
              </Button>
            </DialogFooter>
          </>
        )}
      </DialogContent>
    </Dialog>
  )
}