package tui

import (
	"fmt"

	"git.milar.in/milarin/buf2d"
	"github.com/gdamore/tcell"
)

type ViewBuffer = buf2d.Buffer[Rune]
type KeyEvent = tcell.EventKey
type Style = tcell.Style
type Color = tcell.Color

var StyleDefault Style = tcell.StyleDefault

type Point struct {
	X, Y int
}

func P(x, y int) Point {
	return Point{x, y}
}

func (p Point) In(d Dimension) bool {
	return p.X >= d.X && p.X < d.X+d.Width && p.Y >= d.Y && p.Y < d.Y+d.Height
}

func (p Point) String() string {
	return fmt.Sprintf("P(%d, %d)", p.X, p.Y)
}

type Size struct {
	Width, Height int
}

func S(w, h int) Size {
	return Size{w, h}
}

func (s Size) String() string {
	return fmt.Sprintf("S(%d, %d)", s.Width, s.Height)
}

type Dimension struct {
	Point
	Size
}

func D(x, y, w, h int) Dimension {
	return Dimension{P(x, y), S(w, h)}
}

func (d Dimension) String() string {
	return fmt.Sprintf("D(%d, %d, %d, %d)", d.X, d.Y, d.Width, d.Height)
}

type Orientation uint8

const (
	Horizontal Orientation = iota
	Vertical
)

type Side uint8

const (
	SideTop Side = iota
	SideBottom
	SideLeft
	SideRight
)

// Horizontal returns true if s is either SideLeft or SideRight
func (s Side) Horizontal() bool {
	return s == SideLeft || s == SideRight
}

// Vertical returns true if s is either SideTop or SideBottom
func (s Side) Vertical() bool {
	return s == SideTop || s == SideBottom
}

type Anchor uint8

const (
	AnchorTopLeft Anchor = iota
	AnchorTop
	AnchorTopRight
	AnchorLeft
	AnchorCenter
	AnchorRight
	AnchorBottomLeft
	AnchorBottom
	AnchorBottomRight
)

type MouseEvent struct {
	Position  Point
	Button    MouseButton
	Modifiers tcell.ModMask
}

type MouseButton uint8

const (
	MouseButtonNone MouseButton = iota
	MouseButtonLeft
	MouseButtonMiddle
	MouseButtonRight
	MouseButtonNext
	MouseButtonPrev

	MouseWheelUp
	MouseWheelDown
	MouseWheelLeft
	MouseWheelRight
)

func convertMouseButton(mask tcell.ButtonMask) MouseButton {
	if mask&tcell.Button1 == tcell.Button1 {
		return MouseButtonLeft
	} else if mask&tcell.Button2 == tcell.Button2 {
		return MouseButtonMiddle
	} else if mask&tcell.Button3 == tcell.Button3 {
		return MouseButtonRight
	} else if mask&tcell.Button4 == tcell.Button4 {
		return MouseButtonNext
	} else if mask&tcell.Button5 == tcell.Button5 {
		return MouseButtonPrev
	} else if mask&tcell.WheelUp == tcell.WheelUp {
		return MouseWheelUp
	} else if mask&tcell.WheelDown == tcell.WheelDown {
		return MouseWheelDown
	} else if mask&tcell.WheelLeft == tcell.WheelLeft {
		return MouseWheelLeft
	} else if mask&tcell.WheelRight == tcell.WheelRight {
		return MouseWheelRight
	}

	return MouseButtonNone
}