"use client"

import { zodResolver } from "@hookform/resolvers/zod"
import { useEffect, useState } from "react"
import { Controller, useForm } from "react-hook-form"
import { toast } from "sonner"
import { z } from "zod"
import { getAllAdmin } from "@/actions/admin"
import { updateCust } from "@/actions/cust"
import { getAllProductDiscount } from "@/actions/product_discount"
import { Button } from "@/components/ui/button"
import {
  Dialog,
  DialogContent,
  DialogHeader,
  DialogTitle,
} from "@/components/ui/dialog"
import {
  Field,
  FieldError,
  FieldGroup,
  FieldLabel,
} from "@/components/ui/field"
import { Input } from "@/components/ui/input"
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "@/components/ui/select"
import type { Admin } from "@/models/admin"
import type { Cust } from "@/models/cust"
import type { ProductDiscount } from "@/models/product_discount"

// 表单验证规则
const editUserSchema = z
  .object({
    id: z.number(),
    username: z.string().optional(),
    email: z.string().email("邮箱格式不正确").optional().or(z.literal("")),
    password: z.string().optional(),
    confirmPassword: z.string().optional(),
    admin_id: z.string().optional(),
    discount_id: z.string().optional(),
    status: z.string().optional(),
    contact_qq: z.string().optional(),
    contact_wechat: z.string().optional(),
  })
  .superRefine((data, ctx) => {
    if (data.password && data.password.length < 6) {
      ctx.addIssue({
        code: z.ZodIssueCode.custom,
        message: "密码至少6位",
        path: ["password"],
      })
    }
    if (data.password && data.password !== data.confirmPassword) {
      ctx.addIssue({
        code: z.ZodIssueCode.custom,
        message: "两次输入的密码不一致",
        path: ["confirmPassword"],
      })
    }
  })

export type EditUserFormValues = z.infer<typeof editUserSchema>

interface EditUserDialogProps {
  open: boolean
  onOpenChange: (open: boolean) => void
  currentUser: Cust | null
  onSuccess: () => void
}

export function UpdateDialog({
  open,
  onOpenChange,
  currentUser,
  onSuccess,
}: EditUserDialogProps) {
  const [admins, setAdmins] = useState<Admin[]>([])
  const [discounts, setDiscounts] = useState<ProductDiscount[]>([])
  const [isSubmitting, setIsSubmitting] = useState(false)

  // 表单
  const { control, handleSubmit, reset } = useForm<EditUserFormValues>({
    resolver: zodResolver(editUserSchema),
    defaultValues: {
      id: 0,
      username: "",
      email: "",
      password: "",
      confirmPassword: "",
      admin_id: "",
      discount_id: "",
      status: "",
      contact_qq: "",
      contact_wechat: "",
    },
  })

  useEffect(() => {
    const loadOptions = async () => {
      try {
        const [adminRes, discountRes] = await Promise.all([
          getAllAdmin(),
          getAllProductDiscount(),
        ])

        if (adminRes.success) {
          setAdmins(adminRes.data)
        } else {
          toast.error(adminRes.message || "获取管理员失败")
          setAdmins([])
        }

        if (discountRes.success) {
          setDiscounts(discountRes.data)
        } else {
          toast.error(discountRes.message || "获取折扣方案失败")
          setDiscounts([])
        }
      } catch (error) {
        const message = error instanceof Error ? error.message : "加载数据失败"
        toast.error(message)
      }
    }

    if (open) {
      loadOptions()
    }
  }, [open])

  useEffect(() => {
    if (currentUser) {
      reset({
        id: currentUser.id,
        username: currentUser.username,
        email: currentUser.email || "",
        password: "",
        confirmPassword: "",
        admin_id: currentUser.admin_id ? String(currentUser.admin_id) : "",
        discount_id: currentUser.discount_id
          ? String(currentUser.discount_id)
          : "",
        status:
          currentUser.status !== undefined ? String(currentUser.status) : "",
        contact_qq: currentUser.contact_qq || "",
        contact_wechat: currentUser.contact_wechat || "",
      })
    }
  }, [currentUser, reset])

  const onSubmit = async (data: EditUserFormValues) => {
    setIsSubmitting(true)
    try {
      const updateData: {
        id: number
        username?: string
        email?: string
        password?: string
        admin_id?: number
        discount_id?: number
        status?: number
        contact_qq?: string
        contact_wechat?: string
      } = { id: data.id }

      if (data.username && data.username.trim() !== "") {
        updateData.username = data.username.trim()
      }
      if (data.email && data.email.trim() !== "") {
        updateData.email = data.email.trim()
      }
      if (data.password && data.password.trim() !== "") {
        updateData.password = data.password
      }
      if (data.admin_id && data.admin_id !== "") {
        updateData.admin_id = Number(data.admin_id)
      }
      if (data.discount_id && data.discount_id !== "") {
        updateData.discount_id = Number(data.discount_id)
      }
      if (data.status && data.status !== "") {
        updateData.status = Number(data.status)
      }
      if (data.contact_qq !== undefined) {
        updateData.contact_qq = data.contact_qq
      }
      if (data.contact_wechat !== undefined) {
        updateData.contact_wechat = data.contact_wechat
      }
      const result = await updateCust(updateData)
      if (result?.success) {
        toast.success("修改成功")
        onOpenChange(false)
        onSuccess()
      } else {
        toast.error(result?.message || "修改失败")
      }
    } catch (error) {
      console.error("修改用户失败:", error)
      const message =
        error instanceof Error ? error.message : "修改失败，请稍后重试"
      toast.error(`修改失败：${message}`)
    } finally {
      setIsSubmitting(false)
    }
  }

  const handleOpenChange = (open: boolean) => {
    if (!open) {
      reset()
    }
    onOpenChange(open)
  }

  return (
    <Dialog open={open} onOpenChange={handleOpenChange}>
      <DialogContent className="max-w-2xl max-h-[90vh] overflow-y-auto">
        <DialogHeader>
          <DialogTitle>修改用户</DialogTitle>
        </DialogHeader>

        <form onSubmit={handleSubmit(onSubmit)} className="space-y-4 py-2">
          <div className="grid grid-cols-2 gap-4">
            <Controller
              name="username"
              control={control}
              render={({ field, fieldState }) => (
                <Field data-invalid={fieldState.invalid}>
                  <FieldLabel>用户名</FieldLabel>
                  <Input {...field} placeholder="请输入用户名" />
                  <FieldError>{fieldState.error?.message}</FieldError>
                </Field>
              )}
            />

            <Controller
              name="email"
              control={control}
              render={({ field, fieldState }) => (
                <Field data-invalid={fieldState.invalid}>
                  <FieldLabel>邮箱</FieldLabel>
                  <Input {...field} placeholder="请输入邮箱" />
                  <FieldError>{fieldState.error?.message}</FieldError>
                </Field>
              )}
            />

            <Controller
              name="password"
              control={control}
              render={({ field, fieldState }) => (
                <Field data-invalid={fieldState.invalid}>
                  <FieldLabel>用户密码</FieldLabel>
                  <Input
                    {...field}
                    type="password"
                    placeholder="选填,修改请输入新密码（至少6位）"
                  />
                  <FieldError>{fieldState.error?.message}</FieldError>
                </Field>
              )}
            />

            <Controller
              name="confirmPassword"
              control={control}
              render={({ field, fieldState }) => (
                <Field data-invalid={fieldState.invalid}>
                  <FieldLabel>确认密码</FieldLabel>
                  <Input
                    {...field}
                    type="password"
                    placeholder="请再次输入密码"
                  />
                  <FieldError>{fieldState.error?.message}</FieldError>
                </Field>
              )}
            />

            <Controller
              name="status"
              control={control}
              render={({ field }) => (
                <Field>
                  <FieldLabel>账号状态</FieldLabel>
                  <Select value={field.value} onValueChange={field.onChange}>
                    <SelectTrigger>
                      <SelectValue placeholder="请选择账号状态" />
                    </SelectTrigger>
                    <SelectContent>
                      <SelectItem value="1">正常</SelectItem>
                      <SelectItem value="0">禁用</SelectItem>
                    </SelectContent>
                  </Select>
                </Field>
              )}
            />

            <Controller
              name="admin_id"
              control={control}
              render={({ field }) => (
                <Field>
                  <FieldLabel>客户经理</FieldLabel>
                  <Select value={field.value} onValueChange={field.onChange}>
                    <SelectTrigger>
                      <SelectValue placeholder="请选择客户经理" />
                    </SelectTrigger>
                    <SelectContent>
                      {admins.map(admin => (
                        <SelectItem key={admin.id} value={admin.id.toString()}>
                          {admin.name}
                        </SelectItem>
                      ))}
                    </SelectContent>
                  </Select>
                </Field>
              )}
            />

            <Controller
              name="discount_id"
              control={control}
              render={({ field }) => (
                <Field>
                  <FieldLabel>折扣方案</FieldLabel>
                  <Select value={field.value} onValueChange={field.onChange}>
                    <SelectTrigger>
                      <SelectValue placeholder="请选择折扣方案" />
                    </SelectTrigger>
                    <SelectContent>
                      {discounts.map(discount => (
                        <SelectItem
                          key={discount.id}
                          value={discount.id.toString()}
                        >
                          {discount.name}（{discount.discount}%）
                        </SelectItem>
                      ))}
                    </SelectContent>
                  </Select>
                </Field>
              )}
            />

            <Controller
              name="contact_qq"
              control={control}
              render={({ field }) => (
                <Field>
                  <FieldLabel>QQ</FieldLabel>
                  <Input {...field} placeholder="QQ号" />
                </Field>
              )}
            />

            <Controller
              name="contact_wechat"
              control={control}
              render={({ field }) => (
                <Field>
                  <FieldLabel>微信</FieldLabel>
                  <Input {...field} placeholder="微信号" />
                </Field>
              )}
            />
          </div>

          <FieldGroup className="flex-row justify-end gap-2 pt-2">
            <Button
              type="button"
              variant="outline"
              onClick={() => handleOpenChange(false)}
              disabled={isSubmitting}
            >
              取消
            </Button>
            <Button type="submit" disabled={isSubmitting}>
              {isSubmitting ? "提交中..." : "确认修改"}
            </Button>
          </FieldGroup>
        </form>
      </DialogContent>
    </Dialog>
  )
}