package mujica

import (
	"github.com/egoist/mygo/ui"

	"mujicaui/internal"
	"mujicaui/theme"
)

// CardOptions configure a Card.
type CardOptions struct {
	// Title heads the card in the serif face; empty shows no header.
	Title string
	// Footer builds the bottom slot, below a divider; nil shows none.
	Footer func()
	// Decorated draws a double border and corner ornaments in Ornament.
	Decorated bool
}

// cardInset is how far the inner line of a decorated card sits inside.
const cardInset float32 = 4

// Card groups content on a surface with an outline. It adds no click behavior.
func Card(c *ui.Context, opts CardOptions, body func()) *ui.Element {
	k := Tokens(c)
	u := Density(c).Unit()
	pad := u * 4
	if opts.Decorated {
		pad += cardInset + 2
	}
	card := ui.Column(c).Background(k.Surface).Radius(theme.CardRadius).Gap(u * 3).Padding(pad).Role(ui.RoleGroup)
	if opts.Title != "" {
		card.Label(opts.Title)
	}
	if opts.Decorated {
		card.Border(theme.BorderWidth, k.Ornament).DrawOver(func(p *ui.Painter, r ui.Rect) {
			internal.Frame(p, r, cardInset, 9, k.Ornament)
		})
	} else {
		card.Border(theme.BorderWidth, k.Border)
	}
	card.Children(func() {
		if opts.Title != "" {
			ui.Text(c, opts.Title).Font(theme.SerifFont).FontSize(FontSize(c, theme.H3Size)).FontWeight(600).LineHeight(1.3)
			if opts.Decorated {
				ui.Box(c).Height(7).FillWidth().Shrink(0).Draw(func(p *ui.Painter, r ui.Rect) {
					internal.RuleDiamond(p, r, 6, 7, k.Ornament)
				})
			}
		}
		ui.Column(c).Gap(u * 2).Children(body)
		if opts.Footer != nil {
			ui.Box(c).Height(1).FillWidth().Shrink(0).Background(k.Border)
			ui.Row(c).Gap(u * 2).Justify(ui.End).AlignItems(ui.Center).Wrap().Children(opts.Footer)
		}
	})
	return card
}