package line

import (
	"errors"
)

// Component -
type Component struct {
	Type string `json:"type"`
}

// BoxComponent -
type BoxComponent struct {
	Component
	Layout   string        `json:"layout"`
	Contents []interface{} `json:"contents"`
	Spacing  NullString    `json:"spacing,omitempty"`
	Action   interface{}   `json:"action,omitempty"`
	Flex     NullInt       `json:"flex,omitempty"`
	Margin   NullString    `json:"margin,omitempty"`
}

// SetLayout -
func (p *BoxComponent) SetLayout(layout string) {
	switch layout {
	case "horizontal":
	case "vertical":
	case "baseline":
		p.Layout = layout
	default:
		p.Layout = "horizontal"
	}
}

// SetContent -
func (p *BoxComponent) SetContent(content interface{}) (err error) {
	if p.Layout == "horizontal" || p.Layout == "vertical" {
		switch content.(type) {
		case *BoxComponent:
		case *ButtonComponent:
		case *FillerComponent:
		case *ImageComponent:
		case *SeparatorComponent:
		case *SpacerComponent:
		case *TextComponent:
			p.Contents = append(p.Contents, content)
		default:
			return errors.New("content type not allow")
		}
	} else if p.Layout == "baseline" {
		switch content.(type) {
		case *FillerComponent:
		case *IconComponent:
		case *SpacerComponent:
		case *TextComponent:
			p.Contents = append(p.Contents, content)
		default:
			return errors.New("content type not allow")
		}
	} else {
		return errors.New("layout type not valid")
	}
	return
}

// ButtonComponent -
type ButtonComponent struct {
	Component
	Action  interface{} `json:"action"`
	Height  NullString  `json:"height,omitempty"`
	Style   NullString  `json:"style,omitempty"`
	Color   NullString  `json:"color,omitempty"`
	Gravity NullString  `json:"gravity,omitempty"`
	Flex    NullInt     `json:"flex,omitempty"`
	Margin  NullString  `json:"margin,omitempty"`
}

// FillerComponent -
type FillerComponent struct {
	Component
}

// IconComponent -
type IconComponent struct {
	Component
	URL         string     `json:"url"`
	Margin      NullString `json:"margin,omitempty"`
	Size        NullString `json:"size,omitempty"`
	AspectRatio NullString `json:"aspectRatio,omitempty"`
}

// ImageComponent -
type ImageComponent struct {
	Component
	URL             string      `json:"url"`
	Flex            NullInt     `json:"flex,omitempty"`
	Margin          NullString  `json:"margin,omitempty"`
	Align           NullString  `json:"align,omitempty"`
	Gravity         NullString  `json:"gravity,omitempty"`
	Size            NullString  `json:"size,omitempty"`
	AspectRatio     NullString  `json:"aspectRatio,omitempty"`
	AspectMode      NullString  `json:"aspectMode,omitempty"`
	BackgroundColor NullString  `json:"backgroundColor,omitempty"`
	Action          interface{} `json:"action,omitempty"`
}

// SeparatorComponent -
type SeparatorComponent struct {
	Component
	Margin NullString `json:"margin,omitempty"`
	Color  NullString `json:"color,omitempty"`
}

// SpacerComponent -
type SpacerComponent struct {
	Component
	Size NullString `json:"size,omitempty"`
}

// TextComponent -
type TextComponent struct {
	Component
	Text     string      `json:"text"`
	Flex     NullInt     `json:"flex,omitempty"`
	Margin   NullString  `json:"margin,omitempty"`
	Size     NullString  `json:"size,omitempty"`
	Align    NullString  `json:"align,omitempty"`
	Gravity  NullString  `json:"gravity,omitempty"`
	Wrap     bool        `json:"wrap"`
	MaxLines NullInt     `json:"maxLines,omitempty"`
	Weight   NullString  `json:"weight,omitempty"`
	Color    NullString  `json:"color,omitempty"`
	Action   interface{} `json:"action,omitempty"`
}

// NewBoxComponent -
func NewBoxComponent(layout string) (box *BoxComponent) {
	box = &BoxComponent{}
	box.Type = "box"
	box.SetLayout(layout)
	return
}

// NewButtonComponent -
func NewButtonComponent() (btn *ButtonComponent) {
	btn = &ButtonComponent{}
	btn.Type = "button"
	return
}

// NewFillerComponent -
func NewFillerComponent() (filler *FillerComponent) {
	filler = &FillerComponent{}
	filler.Type = "filler"
	return
}

// NewIconComponent -
func NewIconComponent(imgUrl string) (icon *IconComponent) {
	icon = &IconComponent{}
	icon.Type = "icon"
	icon.URL = imgUrl
	return
}

// NewImageComponent -
func NewImageComponent(imgUrl string) (image *ImageComponent) {
	image = &ImageComponent{}
	image.Type = "image"
	image.URL = imgUrl
	return
}