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ui_for_push.go
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/
ui_for_push.go
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package ui
import (
"errors"
"fmt"
"sort"
"strings"
"github.com/fatih/color"
)
var ErrValueMissmatch = errors.New("values provided were of different types")
type Change struct {
Header string
CurrentValue interface{}
NewValue interface{}
}
// DisplayChangesForPush will display the set of changes via
// DisplayChangeForPush in the order given.
func (ui *UI) DisplayChangesForPush(changeSet []Change) error {
if len(changeSet) == 0 {
return nil
}
var columnWidth int
for _, change := range changeSet {
if width := wordSize(ui.TranslateText(change.Header)); width > columnWidth {
columnWidth = width
}
}
for _, change := range changeSet {
padding := columnWidth - wordSize(ui.TranslateText(change.Header)) + 3
err := ui.DisplayChangeForPush(change.Header, padding, change.CurrentValue, change.NewValue)
if err != nil {
return err
}
}
return nil
}
// DisplayChangeForPush will display the header and old/new value with the
// appropriately red/green minuses and pluses.
func (ui *UI) DisplayChangeForPush(header string, stringTypePadding int, originalValue interface{}, newValue interface{}) error {
ui.terminalLock.Lock()
defer ui.terminalLock.Unlock()
offset := strings.Repeat(" ", stringTypePadding)
switch oVal := originalValue.(type) {
case int:
nVal, ok := newValue.(int)
if !ok {
return ErrValueMissmatch
}
ui.displayDiffForInt(offset, header, oVal, nVal)
case string:
nVal, ok := newValue.(string)
if !ok {
return ErrValueMissmatch
}
ui.displayDiffForString(offset, header, oVal, nVal)
case []string:
nVal, ok := newValue.([]string)
if !ok {
return ErrValueMissmatch
}
if len(oVal) == 0 && len(nVal) == 0 {
return nil
}
ui.displayDiffForStrings(offset, header, oVal, nVal)
case map[string]string:
nVal, ok := newValue.(map[string]string)
if !ok {
return ErrValueMissmatch
}
if len(oVal) == 0 && len(nVal) == 0 {
return nil
}
ui.displayDiffForMapStringString(offset, header, oVal, nVal)
default:
panic(fmt.Sprintf("diff display does not have case for '%s'", header))
}
return nil
}
func (ui UI) displayDiffForInt(offset string, header string, oldValue int, newValue int) {
if oldValue != newValue {
formattedOld := fmt.Sprintf("- %s%s%d", ui.TranslateText(header), offset, oldValue)
formattedNew := fmt.Sprintf("+ %s%s%d", ui.TranslateText(header), offset, newValue)
if oldValue != 0 {
fmt.Fprintln(ui.Out, ui.modifyColor(formattedOld, color.New(color.FgRed)))
}
fmt.Fprintln(ui.Out, ui.modifyColor(formattedNew, color.New(color.FgGreen)))
} else {
fmt.Fprintf(ui.Out, " %s%s%d\n", ui.TranslateText(header), offset, oldValue)
}
}
func (ui UI) displayDiffForMapStringString(offset string, header string, oldMap map[string]string, newMap map[string]string) {
var oldKeys []string
for key := range oldMap {
oldKeys = append(oldKeys, key)
}
var newKeys []string
for key := range newMap {
newKeys = append(newKeys, key)
}
sortedKeys := sortedUniqueArray(oldKeys, newKeys)
fmt.Fprintf(ui.Out, " %s\n", ui.TranslateText(header))
for _, key := range sortedKeys {
newVal, ok := newMap[key]
if !ok {
formattedOld := fmt.Sprintf("- %s", key)
fmt.Fprintln(ui.Out, ui.modifyColor(formattedOld, color.New(color.FgRed)))
continue
}
oldVal, ok := oldMap[key]
if !ok {
formattedNew := fmt.Sprintf("+ %s", key)
fmt.Fprintln(ui.Out, ui.modifyColor(formattedNew, color.New(color.FgGreen)))
continue
}
if oldVal == newVal {
fmt.Fprintf(ui.Out, " %s\n", key)
} else {
formattedOld := fmt.Sprintf("- %s", key)
fmt.Fprintln(ui.Out, ui.modifyColor(formattedOld, color.New(color.FgRed)))
formattedNew := fmt.Sprintf("+ %s", key)
fmt.Fprintln(ui.Out, ui.modifyColor(formattedNew, color.New(color.FgGreen)))
}
}
}
func (ui UI) displayDiffForString(offset string, header string, oVal string, nVal string) {
if oVal != nVal {
formattedOld := fmt.Sprintf("- %s%s%s", ui.TranslateText(header), offset, oVal)
formattedNew := fmt.Sprintf("+ %s%s%s", ui.TranslateText(header), offset, nVal)
if oVal != "" {
fmt.Fprintln(ui.Out, ui.modifyColor(formattedOld, color.New(color.FgRed)))
}
fmt.Fprintln(ui.Out, ui.modifyColor(formattedNew, color.New(color.FgGreen)))
} else {
fmt.Fprintf(ui.Out, " %s%s%s\n", ui.TranslateText(header), offset, oVal)
}
}
func (ui UI) displayDiffForStrings(offset string, header string, oldList []string, newList []string) {
fmt.Fprintf(ui.Out, " %s\n", ui.TranslateText(header))
fullList := sortedUniqueArray(oldList, newList)
for _, item := range fullList {
inOld := existsIn(item, oldList)
inNew := existsIn(item, newList)
if inOld && inNew {
fmt.Fprintf(ui.Out, " %s\n", item)
} else if inOld {
formattedOld := fmt.Sprintf("- %s", item)
fmt.Fprintln(ui.Out, ui.modifyColor(formattedOld, color.New(color.FgRed)))
} else {
formattedNew := fmt.Sprintf("+ %s", item)
fmt.Fprintln(ui.Out, ui.modifyColor(formattedNew, color.New(color.FgGreen)))
}
}
}
func existsIn(str string, ary []string) bool {
for _, val := range ary {
if val == str {
return true
}
}
return false
}
func sortedUniqueArray(ary1 []string, ary2 []string) []string {
uniq := append([]string{}, ary1...)
for _, str := range ary2 {
if !existsIn(str, uniq) {
uniq = append(uniq, str)
}
}
sort.Strings(uniq)
return uniq
}