import * as React from 'react'
import { cva, type VariantProps } from 'class-variance-authority'
import { CheckIcon, XCircle, ChevronDown, XIcon, WandSparkles } from 'lucide-react'

import { cn } from '@/lib/utils'
import { Separator } from '@/components/ui/separator'
import { Button } from '@/components/ui/button'
import { Badge } from '@/components/ui/badge'
import { Popover, PopoverContent, PopoverTrigger } from '@/components/ui/popover'
import {
  Command,
  CommandEmpty,
  CommandGroup,
  CommandInput,
  CommandItem,
  CommandList,
  CommandSeparator,
} from '@/components/ui/command'

const multiSelectVariants = cva(
  'm-1 transition ease-in-out delay-150 hover:-translate-y-1 hover:scale-110 duration-300',
  {
    variants: {
      variant: {
        default: 'border-foreground/10 text-foreground bg-card hover:bg-card/80',
        secondary: 'border-foreground/10 bg-secondary text-secondary-foreground hover:bg-secondary/80',
        destructive: 'border-transparent bg-destructive text-destructive-foreground hover:bg-destructive/80',
        inverted: 'inverted',
      },
    },
    defaultVariants: {
      variant: 'default',
    },
  }
)

interface MultiSelectProps
  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
    VariantProps<typeof multiSelectVariants> {
  options: {
    label: string
    value: string
    icon?: React.ComponentType<{ className?: string }>
  }[]
  onValueChange: (value: string[]) => void
  defaultValue: string[]
  placeholder?: string
  animation?: number
  maxCount?: number
  asChild?: boolean
  className?: string
}

export const MultiSelect = React.forwardRef<HTMLButtonElement, MultiSelectProps>(
  (
    {
      options,
      onValueChange,
      variant,
      defaultValue = [],
      placeholder = 'Select options',
      animation = 0,
      maxCount = 3,
      asChild = false,
      className,
      ...props
    },
    ref
  ) => {
    const [selectedValues, setSelectedValues] = React.useState<string[]>(defaultValue)
    const [isPopoverOpen, setIsPopoverOpen] = React.useState(false)
    const [isAnimating, setIsAnimating] = React.useState(false)

    React.useEffect(() => {
      if (JSON.stringify(selectedValues) !== JSON.stringify(defaultValue)) {
        setSelectedValues(defaultValue)
      }
    }, [defaultValue, selectedValues])

    const handleInputKeyDown = (event: React.KeyboardEvent<HTMLInputElement>) => {
      if (event.key === 'Enter') {
        setIsPopoverOpen(true)
      } else if (event.key === 'Backspace' && !event.currentTarget.value) {
        const newSelectedValues = [...selectedValues]
        newSelectedValues.pop()
        setSelectedValues(newSelectedValues)
        onValueChange(newSelectedValues)
      }
    }

    const toggleOption = (value: string) => {
      const newSelectedValues = selectedValues.includes(value)
        ? selectedValues.filter((v) => v !== value)
        : [...selectedValues, value]
      setSelectedValues(newSelectedValues)
      onValueChange(newSelectedValues)
    }

    const handleClear = () => {
      setSelectedValues([])
      onValueChange([])
    }

    const handleTogglePopover = () => {
      setIsPopoverOpen((prev) => !prev)
    }

    const clearExtraOptions = () => {
      const newSelectedValues = selectedValues.slice(0, maxCount)
      setSelectedValues(newSelectedValues)
      onValueChange(newSelectedValues)
    }

    const toggleAll = () => {
      if (selectedValues.length === options.length) {
        handleClear()
      } else {
        const allValues = options.map((option) => option.value)
        setSelectedValues(allValues)
        onValueChange(allValues)
      }
    }

    return (
      <Popover open={isPopoverOpen} onOpenChange={setIsPopoverOpen}>
        <PopoverTrigger asChild>
          <Button
            ref={ref}
            {...props}
            onClick={handleTogglePopover}
            className={cn(
              'flex w-full p-1 rounded-md border min-h-10 h-auto items-center justify-between bg-inherit hover:bg-inherit',
              className
            )}
          >
            {selectedValues.length > 0 ? (
              <div className="flex justify-between items-center w-full">
                <div className="flex flex-wrap items-center">
                  {selectedValues.slice(0, maxCount).map((value) => {
                    const option = options.find((o) => o.value === value)
                    const IconComponent = option?.icon
                    return (
                      <Badge
                        key={value}
                        className={cn(isAnimating ? 'animate-bounce' : '', multiSelectVariants({ variant, className }))}
                        style={{ animationDuration: `${animation}s` }}
                      >
                        {IconComponent && <IconComponent className="h-4 w-4 mr-2" />}
                        {option?.label}
                        <XCircle
                          className="ml-2 h-4 w-4 cursor-pointer"
                          onClick={(event) => {
                            event.stopPropagation()
                            toggleOption(value)
                          }}
                        />
                      </Badge>
                    )
                  })}
                  {selectedValues.length > maxCount && (
                    <Badge
                      className={cn(
                        'bg-transparent text-foreground border-foreground/1 hover:bg-transparent',
                        isAnimating ? 'animate-bounce' : '',
                        multiSelectVariants({ variant, className })
                      )}
                      style={{ animationDuration: `${animation}s` }}
                    >
                      {`+ ${selectedValues.length - maxCount} more`}
                      <XCircle
                        className="ml-2 h-4 w-4 cursor-pointer"
                        onClick={(event) => {
                          event.stopPropagation()
                          clearExtraOptions()
                        }}
                      />
                    </Badge>
                  )}
                </div>
                <div className="flex items-center justify-between">
                  <XIcon
                    className="h-4 mx-2 cursor-pointer text-muted-foreground"
                    onClick={(event) => {
                      event.stopPropagation()
                      handleClear()
                    }}
                  />
                  <Separator orientation="vertical" className="flex min-h-6 h-full" />
                  <ChevronDown className="h-4 mx-2 cursor-pointer text-muted-foreground" />
                </div>
              </div>
            ) : (
              <div className="flex items-center justify-between w-full mx-auto">
                <span className="text-sm text-muted-foreground mx-3">{placeholder}</span>
                <ChevronDown className="h-4 cursor-pointer text-muted-foreground mx-2" />
              </div>
            )}
          </Button>
        </PopoverTrigger>
        <PopoverContent className="w-auto p-0" align="start" onEscapeKeyDown={() => setIsPopoverOpen(false)}>
          <Command>
            <CommandInput placeholder="Search..." onKeyDown={handleInputKeyDown} />
            <CommandList>
              <CommandEmpty>No results found.</CommandEmpty>
              <CommandGroup>
                <CommandItem key="all" onSelect={toggleAll} className="cursor-pointer">
                  <div
                    className={cn(
                      'mr-2 flex h-4 w-4 items-center justify-center rounded-sm border border-primary',
                      selectedValues.length === options.length
                        ? 'bg-primary text-primary-foreground'
                        : 'opacity-50 [&_svg]:invisible'
                    )}
                  >
                    <CheckIcon className="h-4 w-4" />
                  </div>
                  <span>(Select All)</span>
                </CommandItem>
                {options.map((option) => {
                  const isSelected = selectedValues.includes(option.value)
                  return (
                    <CommandItem
                      key={option.value}
                      onSelect={() => toggleOption(option.value)}
                      className="cursor-pointer"
                    >
                      <div
                        className={cn(
                          'mr-2 flex h-4 w-4 items-center justify-center rounded-sm border border-primary',
                          isSelected ? 'bg-primary text-primary-foreground' : 'opacity-50 [&_svg]:invisible'
                        )}
                      >
                        <CheckIcon className="h-4 w-4" />
                      </div>
                      {option.icon && <option.icon className="mr-2 h-4 w-4 text-muted-foreground" />}
                      <span>{option.label}</span>
                    </CommandItem>
                  )
                })}
              </CommandGroup>
              <CommandSeparator />
              <CommandGroup>
                <div className="flex items-center justify-between">
                  {selectedValues.length > 0 && (
                    <>
                      <CommandItem onSelect={handleClear} className="flex-1 justify-center cursor-pointer">
                        Clear
                      </CommandItem>
                      <Separator orientation="vertical" className="flex min-h-6 h-full" />
                    </>
                  )}
                  <CommandSeparator />
                  <CommandItem
                    onSelect={() => setIsPopoverOpen(false)}
                    className="flex-1 justify-center cursor-pointer"
                  >
                    Close
                  </CommandItem>
                </div>
              </CommandGroup>
            </CommandList>
          </Command>
        </PopoverContent>
        {animation > 0 && selectedValues.length > 0 && (
          <WandSparkles
            className={cn(
              'cursor-pointer my-2 text-foreground bg-background w-3 h-3',
              isAnimating ? '' : 'text-muted-foreground'
            )}
            onClick={() => setIsAnimating(!isAnimating)}
          />
        )}
      </Popover>
    )
  }
)

MultiSelect.displayName = 'MultiSelect'