package main

import (
	"math/rand"

	"github.com/awesome-gocui/gocui"

	"go.wit.com/log"
)

//w.v.SelBgColor = gocui.ColorCyan
//color.go:       w.v.SelFgColor = gocui.ColorBlack
//color.go:               w.v.BgColor = gocui.ColorGreen

type colorT struct {
	frame gocui.Attribute
	fg    gocui.Attribute
	bg    gocui.Attribute
	selFg gocui.Attribute
	selBg gocui.Attribute
	name  string
}

var none gocui.Attribute = gocui.AttrNone
var lightPurple gocui.Attribute = gocui.GetColor("#DDDDDD")    // light purple
var darkPurple gocui.Attribute = gocui.GetColor("#FFAA55")     // Dark Purple
var heavyPurple gocui.Attribute = gocui.GetColor("#88AA55")    // heavy purple
var powdererBlue gocui.Attribute = gocui.GetColor("#B0E0E6")   // w3c 'powerder blue'
var superLightGrey gocui.Attribute = gocui.GetColor("#55AAFF") // super light grey

// Standard defined colors from gocui:
// ColorBlack ColorRed ColorGreen ColorYellow ColorBlue ColorMagenta ColorCyan ColorWhite

// v.BgColor = gocui.GetColor("#111111") // crazy red
// v.BgColor = gocui.GetColor("#FF9911") // heavy red
// v.SelBgColor = gocui.GetColor("#FFEE11") // blood red

// v.BgColor = gocui.GetColor("#55AAFF") // super light grey
// v.BgColor = gocui.GetColor("#FFC0CB") // 'w3c pink' yellow

//	Normal Text                             On mouseover
//
// Widget Frame         Text              background              Text           background
var colorWindow colorT = colorT{
	frame: none,
	fg:    gocui.ColorBlue,
	bg:    none,
	selFg: none,
	selBg: powdererBlue,
	name:  "normal window",
}
var colorActiveW colorT = colorT{none, none, powdererBlue, none, powdererBlue, "active window"}

var colorTab colorT = colorT{gocui.ColorBlue, gocui.ColorBlue, none, none, powdererBlue, "normal tab"}
var colorActiveT colorT = colorT{gocui.ColorBlue, none, powdererBlue, none, powdererBlue, "active tab"}

var colorButton colorT = colorT{gocui.ColorGreen, none, gocui.ColorWhite, gocui.ColorGreen, gocui.ColorBlack, "normal button"}
var colorLabel colorT = colorT{none, none, superLightGrey, none, superLightGrey, "normal label"}
var colorGroup colorT = colorT{none, none, superLightGrey, none, superLightGrey, "normal group"}

var colorDisabled colorT = colorT{
	frame: superLightGrey,
	fg:    superLightGrey,
	bg:    superLightGrey,
	selFg: gocui.ColorBlack,
	selBg: gocui.ColorBlack,
	name:  "disabled widget",
}

// widget debugging colors. these widgets aren't displayed unless you are debugging
var colorRoot colorT = colorT{gocui.ColorRed, none, powdererBlue, none, gocui.ColorBlue, "debug root"}
var colorFlag colorT = colorT{gocui.ColorRed, none, powdererBlue, none, gocui.ColorGreen, "debug flag"}
var colorBox colorT = colorT{gocui.ColorRed, none, lightPurple, none, gocui.ColorCyan, "debug box"}
var colorGrid colorT = colorT{gocui.ColorRed, none, lightPurple, none, gocui.ColorRed, "debug grid"}
var colorNone colorT = colorT{none, none, none, none, none, "debug none"}

// actually sets the colors for the gocui element
// the user will see the colors change when this runs
// TODO: add black/white only flag for ttyS0
// TODO: or fix kvm/qemu serial console & SIGWINCH.
// TODO: and minicom and uboot and 5 million other things.
// TODO: maybe enough of us could actually do that if we made it a goal.
// TODO: start with riscv boards and fix it universally there
// TODO: so just a small little 'todo' item here
func (tk *guiWidget) setColor(newColor *colorT) {
	if tk.color == newColor {
		// nothing to do since the colors have nto changed
		return
	}
	tk.color = newColor
	if tk.v == nil {
		return
	}
	if tk.color == nil {
		log.Log(NOW, "Set the node to color = nil")
		tk.color = &colorNone
	}
	log.Log(NOW, "Set the node to color =", tk.color.name)
	tk.recreateView()
}

func (w *guiWidget) disableColor() {
	if w.color != &colorDisabled {
		w.defaultColor = w.color
	}
	w.setColor(&colorDisabled)
}

func (w *guiWidget) enableColor() {
	w.setColor(w.defaultColor)
}

func (w *guiWidget) setDefaultWidgetColor() {
	w.showView()
}

func (w *guiWidget) setDefaultHighlight() {
	if w.v == nil {
		log.Log(ERROR, "SetColor() failed on view == nil")
		return
	}
	w.v.SelBgColor = gocui.ColorGreen
	w.v.SelFgColor = gocui.ColorBlack
}

func randColor() gocui.Attribute {
	colors := []string{"Green", "#FFAA55", "Yellow", "Blue", "Red", "Black", "White"}
	i := rand.Intn(len(colors))
	log.Log(NOW, "randColor() i =", i)
	return gocui.GetColor(colors[i])
}

func (w *guiWidget) redoColor(draw bool) {
	if w == nil {
		return
	}

	log.Sleep(.05)
	w.setDefaultHighlight()
	w.setDefaultWidgetColor()

	for _, child := range w.children {
		child.redoColor(draw)
	}
}