Button

package button

import (
	"github.com/axzilla/templui/internal/utils"
	"strings"
)

type Variant string
type Size string
type Type string

const (
	VariantDefault     Variant = "default"
	VariantDestructive Variant = "destructive"
	VariantOutline     Variant = "outline"
	VariantSecondary   Variant = "secondary"
	VariantGhost       Variant = "ghost"
	VariantLink        Variant = "link"
)

const (
	TypeButton Type = "button"
	TypeReset  Type = "reset"
	TypeSubmit Type = "submit"
)

const (
	SizeIcon Size = "icon"
)

type Props struct {
	ID           string
	Class        string
	Attributes   templ.Attributes
	Variant      Variant
	Size         Size
	FullWidth    bool
	Href         string
	Target       string
	Disabled     bool
	Type         Type
	HxGet        string
	HxPost       string
	HxPut        string
	HxDelete     string
	HxTrigger    string
	HxTarget     string
	HxSwap       string
	HxReplaceUrl string
}

templ Button(props ...Props) {
	{{ var p Props }}
	if len(props) > 0 {
		{{ p = props[0] }}
	}
	if p.Type == "" {
		{{ p.Type = TypeButton }}
	}
	if p.Href != "" && !p.Disabled {
		<a
			if p.ID != "" {
				id={ p.ID }
			}
			href={ templ.SafeURL(p.Href) }
			if p.Target != "" {
				target={ p.Target }
			}
			class={
				utils.TwMerge(
					"inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium ring-offset-background transition-colors",
					"focus-visible:outline-hidden focus-visible:ring-2 focus:ring-ring focus-visible:ring-offset-2",
					"cursor-pointer",
					p.variantClasses(),
					p.sizeClasses(),
					p.modifierClasses(),
					p.Class,
				),
			}
			{ p.Attributes... }
		>
			{ children... }
		</a>
	} else {
		<button
			if p.ID != "" {
				id={ p.ID }
			}
			class={
				utils.TwMerge(
					"inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium ring-offset-background transition-colors",
					"focus-visible:outline-hidden focus-visible:ring-2 focus:ring-ring focus-visible:ring-offset-2",
					"disabled:opacity-50 disabled:cursor-not-allowed",
					"cursor-pointer",
					p.variantClasses(),
					p.sizeClasses(),
					p.modifierClasses(),
					p.Class,
				),
			}
			if p.Type != "" {
				type={ string(p.Type) }
			}
			disabled?={ p.Disabled }
			if p.HxGet != "" {
				hx-get={ p.HxGet }
			}
			if p.HxPost != "" {
				hx-post={ p.HxPost }
			}
			if p.HxPut != "" {
				hx-put={ p.HxPut }
			}
			if p.HxDelete != "" {
				hx-delete={ p.HxDelete }
			}
			if p.HxTrigger != "" {
				hx-trigger={ p.HxTrigger }
			}
			if p.HxTarget != "" {
				hx-target={ p.HxTarget }
			}
			if p.HxSwap != "" {
				hx-swap={ p.HxSwap }
			}
			if p.HxReplaceUrl != "" {
				hx-replace-url={ p.HxReplaceUrl }
			}
			{ p.Attributes... }
		>
			{ children... }
		</button>
	}
}

func (b Props) variantClasses() string {
	switch b.Variant {
	case VariantDestructive:
		return "bg-destructive text-destructive-foreground hover:bg-destructive/90"
	case VariantOutline:
		return "border border-input bg-background hover:bg-accent hover:text-accent-foreground"
	case VariantSecondary:
		return "bg-secondary text-secondary-foreground hover:bg-secondary/80"
	case VariantGhost:
		return "hover:bg-accent hover:text-accent-foreground"
	case VariantLink:
		return "text-primary underline-offset-4 hover:underline"
	default:
		return "bg-primary text-primary-foreground hover:bg-primary/90"
	}
}

func (b Props) sizeClasses() string {
	switch b.Size {
	case SizeIcon:
		return "h-10 w-10"
	default:
		return "h-10 px-4 py-2 rounded-md"
	}
}

func (b Props) modifierClasses() string {
	classes := []string{}
	if b.FullWidth {
		classes = append(classes, "w-full")
	}
	return strings.Join(classes, " ")
}