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package viewmodels
import (
"fmt"
"github.com/sirupsen/logrus"
"github.com/wagoodman/dive/dive/filetree"
"github.com/wagoodman/dive/dive/image"
)
const (
CompareSingleLayer LayerCompareMode = iota
CompareAllLayers
)
type LayerCompareMode int
type LayersViewModel struct {
mode LayerCompareMode
layers []*image.Layer
index int
}
func NewLayersViewModel(layers []*image.Layer) *LayersViewModel {
return &LayersViewModel{
mode: CompareSingleLayer,
layers: layers,
}
}
func (lm *LayersViewModel) GetMode() LayerCompareMode {
return lm.mode
}
func (lm *LayersViewModel) SwitchMode() {
lm.mode = (lm.mode + 1) % 2 //this just cycles the mode
}
func (lm *LayersViewModel) GetCompareIndicies() filetree.TreeIndexKey {
intMax := func(i, j int) int {
if i > j {
return i
}
return j
}
bottomStart := 0
bottomStop := 0
if lm.mode == CompareSingleLayer {
bottomStop = intMax(lm.index-1, 0)
}
return filetree.NewTreeIndexKey(bottomStart, bottomStop, lm.index, lm.index)
}
func (lm *LayersViewModel) SetLayerIndex(index int) bool {
if 0 <= index && index < len(lm.layers) {
logrus.Debug("setting index, old: %d, new: %d", lm.index, index)
lm.index = index
return true
}
return false
}
func (lm *LayersViewModel) GetPrintableLayers() []fmt.Stringer {
var result []fmt.Stringer
for _, layer := range lm.layers {
result = append(result, fmt.Stringer(layer))
}
return result
}
func (lm *LayersViewModel) GetCurrentLayer() *image.Layer {
return lm.layers[lm.index]
}
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