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package theme

import (
	"fmt"
	"strings"

	"{{{ .Package }}}/app/util"
)

type Colors struct {
	Border         string `json:"brd"`
	LinkDecoration string `json:"ld"`

	Foreground      string `json:"fg"`
	ForegroundMuted string `json:"fgm"`
	Background      string `json:"bg"`
	BackgroundMuted string `json:"bgm"`

	LinkForeground        string `json:"lf"`
	LinkVisitedForeground string `json:"lvf"`

	NavForeground string `json:"nf"`
	NavBackground string `json:"nb"`

	MenuForeground         string `json:"mf"`
	MenuSelectedForeground string `json:"msf"`
	MenuBackground         string `json:"mb"`
	MenuSelectedBackground string `json:"msb"`

	ModalBackdrop string `json:"mbd"`
	Success       string `json:"ok"`
	Error         string `json:"err"`
}

func (c *Colors) CSS(key string, indent int) string {
	sb := &strings.Builder{}
	sb.WriteString(key + " {")
	prop := func(k string, v string) {
		_, _ = fmt.Fprintf(sb, " --%s: %s;", k, v)
	}
	prop("border", c.Border)
	prop("link-text-decoration", c.LinkDecoration)
	prop("color-foreground", c.Foreground)
	prop("color-foreground-muted", c.ForegroundMuted)
	prop("color-background", c.Background)
	prop("color-background-muted", c.BackgroundMuted)
	prop("color-link-foreground", c.LinkForeground)
	prop("color-link-visited-foreground", c.LinkVisitedForeground)
	prop("color-nav-foreground", c.NavForeground)
	prop("color-nav-background", c.NavBackground)
	prop("color-menu-foreground", c.MenuForeground)
	prop("color-menu-selected-foreground", c.MenuSelectedForeground)
	prop("color-menu-background", c.MenuBackground)
	prop("color-menu-selected-background", c.MenuSelectedBackground)
	prop("color-modal-backdrop", c.ModalBackdrop)
	prop("color-success", c.Success)
	prop("color-error", c.Error)
	sb.WriteString("}")
	ret := &strings.Builder{}
	addLine(ret, sb.String(), indent)
	return ret.String()
}

func (c *Colors) Clone() *Colors {
	return &Colors{
		Border:                 c.Border,
		LinkDecoration:         c.LinkDecoration,
		Foreground:             c.Foreground,
		ForegroundMuted:        c.ForegroundMuted,
		Background:             c.Background,
		BackgroundMuted:        c.BackgroundMuted,
		LinkForeground:         c.LinkForeground,
		LinkVisitedForeground:  c.LinkVisitedForeground,
		NavForeground:          c.NavForeground,
		NavBackground:          c.NavBackground,
		MenuForeground:         c.MenuForeground,
		MenuBackground:         c.MenuBackground,
		MenuSelectedForeground: c.MenuSelectedForeground,
		MenuSelectedBackground: c.MenuSelectedBackground,
		ModalBackdrop:          c.ModalBackdrop,
		Success:                c.Success,
		Error:                  c.Error,
	}
}

func (c *Colors) ApplyMap(m util.ValueMap, prefix string) *Colors {
	get := func(k string, def string) string {
		x, err := m.GetString(prefix+k, true)
		if err != nil {
			return strings.ToLower(def)
		}
		return strings.ToLower(x)
	}
	c.Border = get("border", c.Border)
	c.LinkDecoration = get("link-decoration", c.LinkDecoration)
	c.Foreground = get("foreground", c.Foreground)
	c.ForegroundMuted = get("foreground-muted", c.ForegroundMuted)
	c.Background = get("background", c.Background)
	c.BackgroundMuted = get("background-muted", c.BackgroundMuted)
	c.LinkForeground = get("link-foreground", c.LinkForeground)
	c.LinkVisitedForeground = get("link-visited-foreground", c.LinkVisitedForeground)
	c.NavForeground = get("nav-foreground", c.NavForeground)
	c.NavBackground = get("nav-background", c.NavBackground)
	c.MenuForeground = get("menu-foreground", c.MenuForeground)
	c.MenuBackground = get("menu-background", c.MenuBackground)
	c.MenuSelectedForeground = get("menu-selected-foreground", c.MenuSelectedForeground)
	c.MenuSelectedBackground = get("menu-selected-background", c.MenuSelectedBackground)
	c.ModalBackdrop = get("modal-backdrop", c.ModalBackdrop)
	c.Success = get("success", c.Success)
	c.Error = get(util.KeyError, c.Error)
	return c
}

func (c *Colors) Equals(x *Colors) bool {
	return c.Border == x.Border && c.LinkDecoration == x.LinkDecoration &&
		c.Foreground == x.Foreground && c.ForegroundMuted == x.ForegroundMuted &&
		c.Background == x.Background && c.BackgroundMuted == x.BackgroundMuted &&
		c.LinkForeground == x.LinkForeground && c.LinkVisitedForeground == x.LinkVisitedForeground &&
		c.NavForeground == x.NavForeground && c.NavBackground == x.NavBackground &&
		c.MenuForeground == x.MenuForeground && c.MenuBackground == x.MenuBackground &&
		c.MenuSelectedForeground == x.MenuSelectedForeground && c.MenuSelectedBackground == x.MenuSelectedBackground &&
		c.ModalBackdrop == x.ModalBackdrop && c.Success == x.Success && c.Error == x.Error
}