package screen

import (
	"fmt"

	"bitbucket.org/hevanto/i18n"
	"fyne.io/fyne/v2"
)

type Size struct {
	Width  float32 `yaml:"width"`
	Height float32 `yaml:"height"`
}

type Element struct {
	ID string `yaml:"id"`

	Container Container `yaml:"container"`
	Layout    Layout    `yaml:"layout"`
	Widget    Widget    `yaml:"widget"`

	// Border Layout Elements
	Top    *Element   `yaml:"top"`
	Bottom *Element   `yaml:"bottom"`
	Left   *Element   `yaml:"left"`
	Right  *Element   `yaml:"right"`
	Center []*Element `yaml:"center"`

	// Other Layout Elements
	Children []*Element `yaml:"children"`
	Content  *Element   `yaml:"content"`

	// Form Element
	Label *Element `yaml:"label"`
	Field *Element `yaml:"field"`

	// Grid configuration
	Columns     *int  `yaml:"columns"`
	Rows        *int  `yaml:"rows"`
	RowColumns  *int  `yaml:"rowColumns"`
	ElementSize *Size `yaml:"elementSize"`

	// MinSize configuration
	MinSize *Size `yaml:"minSize"`

	// Widget Properties
	Text       string         `yaml:"text"`
	Localized  bool           `yaml:"localized"`
	Icon       string         `yaml:"icon"`
	Binding    string         `yaml:"binding"`
	Decorators []string       `yaml:"decorators"`
	Options    map[string]any `yaml:"options"`
	Disabled   bool           `yaml:"disabled"`
	Hidden     bool           `yaml:"hidden"`

	// Calendar Properties
	Time       *string `yaml:"time"`
	TimeFormat *string `yaml:"timeFormat"`

	// List Properties
	ItemTemplate string `yaml:"itemTemplate"`
	ItemRenderer string `yaml:"itemRenderer"`
	ListLength   string `yaml:"listLength"`

	// Check Properties
	Checked bool `yaml:"checked"`

	// Spacer Properties
	FixHorizontal bool `yaml:"fixHorizontal"`
	FixVertical   bool `yaml:"fixVertical"`

	// Handlers
	OnClicked      string `yaml:"onClicked"`
	OnUpClicked    string `yaml:"onUpClicked"`
	OnDownClicked  string `yaml:"onDownClicked"`
	OnChanged      string `yaml:"onChanged"`
	OnSelected     string `yaml:"onSelected"`
	OnUnselected   string `yaml:"onUnselected"`
	OnDateSelected string `yaml:"onDateSelected"`
}

func (e *Element) BuildUI(s ScreenHandler) (obj fyne.CanvasObject, err error) {
	defer func() {
		if e.ID != "" && obj != nil {
			s.RegisterElement(e.ID, obj)
		}
	}()

	if e.Container != "" {
		if obj, err = e.Container.Build(e, s); err != nil {
			err = fmt.Errorf("failed to build container element: %w", err)
			return
		}
		return
	}
	if e.Layout != "" {
		if obj, err = e.Layout.Build(e, s); err != nil {
			err = fmt.Errorf("failed to build layout element: %w", err)
			return
		}
		return
	}
	if e.Widget != "" {
		if obj, err = e.Widget.Build(e, s); err != nil {
			err = fmt.Errorf("failed to build widget element: %w", err)
			return
		}
		return
	}

	return
}

func (e *Element) localize(s ScreenHandler) {
	if e.Localized {
		e.Text = i18n.T(s.GetLocalizer(), e.Text)
	}
}