package ui

import (
	"fmt"

	"git.bullercodeworks.com/brian/wandle"
	"git.bullercodeworks.com/brian/widdles"
	"github.com/nsf/termbox-go"
)

/*
 * PartManager is for adding/editing/removing groups of strings
 */
type PartManager struct {
	active  bool
	visible bool

	x, y, w, h int

	label      string
	typeString string
	options    []string
	selOptions map[int]bool
	input      *widdles.ToggleField

	cursor int
}

var _ widdles.Widdle = (*PartManager)(nil)

func NewPartManager(label string, x, y, w, h int) *PartManager {
	return &PartManager{
		label:      label,
		selOptions: make(map[int]bool),
		input:      widdles.NewToggleField("Value:", "", x+1, y+2, w-2, 1),
	}
}

func (w *PartManager) Init() wandle.Cmd { return nil }
func (w *PartManager) Update(msg wandle.Msg) wandle.Cmd {
	if w.active {
		if msg, ok := msg.(termbox.Event); ok {
			return w.handleTermboxEvent(msg)
		}
	}
	return nil
}
func (w *PartManager) handleTermboxEvent(msg termbox.Event) wandle.Cmd {
	if w.cursor == 0 {
		if opt := w.input.Update(msg); opt != nil {
			return opt
		} else {
			//return w.handleKeyPress(msg)
		}
	}
	return w.handleKeyPress(msg)
}
func (w *PartManager) handleKeyPress(msg termbox.Event) wandle.Cmd {
	if msg.Key == termbox.KeyEsc {
		return func() wandle.Msg {
			w.Hide()
			return nil
		}
	} else if msg.Ch == 'j' || msg.Key == termbox.KeyArrowDown {
		if w.cursor < len(w.options) {
			w.cursor = w.cursor + 1
		}
	} else if msg.Ch == 'k' || msg.Key == termbox.KeyArrowUp {
		if w.cursor > 0 {
			w.cursor = w.cursor - 1
		}
	}
	if w.IsActive() {
		return func() wandle.Msg { return nil }
	}
	return nil
}
func (w *PartManager) View(style wandle.Style) {
	if w.visible {
		wandle.TitledBorderFilled(w.label, w.x, w.y, w.x+w.w, w.y+w.h, style, wandle.BRD_SIMPLE)
		st := style
		if w.cursor == 0 {
			st = st.Invert()
		}
		w.input.View(st)
		y := w.input.GetY() + 1
		wandle.Print(w.x+1, y, style, fmt.Sprintf("Add %s:", w.typeString))
		y++
		for i := range w.options {
			st := style
			if w.cursor-1 == i {
				st = st.Invert()
			}
			wandle.Print(w.x+3, y, st, w.options[i])
			y++
		}
	}
}
func (w *PartManager) IsActive() bool   { return w.active }
func (w *PartManager) SetActive(b bool) { w.active = b }
func (w *PartManager) Focusable() bool  { return true }
func (w *PartManager) SetX(x int) {
	w.x = x
	w.Measure()
}
func (w *PartManager) GetX() int { return w.x }
func (w *PartManager) SetY(y int) {
	w.y = y
	w.Measure()
}
func (w *PartManager) GetY() int { return w.y }
func (w *PartManager) SetHeight(h int) {
	w.h = h
	w.Measure()
}
func (w *PartManager) GetHeight() int { return w.h }
func (w *PartManager) SetWidth(v int) {
	w.w = v
	w.Measure()
}
func (w *PartManager) GetWidth() int { return w.w }
func (w *PartManager) Measure() {
	w.input.SetX(w.x + 1)
	w.input.SetY(w.y + 1)
	w.input.SetWidth(w.w - 2)
	w.input.SetHeight(1)
}

func (w *PartManager) SetLabel(lbl string)      { w.label = lbl }
func (w *PartManager) SetType(tp string)        { w.typeString = tp }
func (w *PartManager) SetValue(val string)      { w.input.SetValue(val) }
func (w *PartManager) GetValue() string         { return w.input.GetValue() }
func (w *PartManager) SetOptions(opts []string) { w.options = opts }
func (w *PartManager) SetVisible(is bool)       { w.visible = is }
func (w *PartManager) IsVisible() bool          { return w.visible }
func (w *PartManager) Show() {
	w.SetVisible(true)
	w.SetActive(true)
}
func (w *PartManager) Hide() {
	w.SetVisible(false)
	w.SetActive(false)
}