stash/pkg/models/update.go

136 lines
3.3 KiB
Go

package models
import (
"fmt"
"io"
"strconv"
"github.com/stashapp/stash/pkg/sliceutil"
"github.com/stashapp/stash/pkg/sliceutil/intslice"
)
type RelationshipUpdateMode string
const (
RelationshipUpdateModeSet RelationshipUpdateMode = "SET"
RelationshipUpdateModeAdd RelationshipUpdateMode = "ADD"
RelationshipUpdateModeRemove RelationshipUpdateMode = "REMOVE"
)
var AllRelationshipUpdateMode = []RelationshipUpdateMode{
RelationshipUpdateModeSet,
RelationshipUpdateModeAdd,
RelationshipUpdateModeRemove,
}
func (e RelationshipUpdateMode) IsValid() bool {
switch e {
case RelationshipUpdateModeSet, RelationshipUpdateModeAdd, RelationshipUpdateModeRemove:
return true
}
return false
}
func (e RelationshipUpdateMode) String() string {
return string(e)
}
func (e *RelationshipUpdateMode) UnmarshalGQL(v interface{}) error {
str, ok := v.(string)
if !ok {
return fmt.Errorf("enums must be strings")
}
*e = RelationshipUpdateMode(str)
if !e.IsValid() {
return fmt.Errorf("%s is not a valid RelationshipUpdateMode", str)
}
return nil
}
func (e RelationshipUpdateMode) MarshalGQL(w io.Writer) {
fmt.Fprint(w, strconv.Quote(e.String()))
}
type UpdateIDs struct {
IDs []int `json:"ids"`
Mode RelationshipUpdateMode `json:"mode"`
}
func (u *UpdateIDs) IDStrings() []string {
if u == nil {
return nil
}
return intslice.IntSliceToStringSlice(u.IDs)
}
// GetImpactedIDs returns the IDs that will be impacted by the update.
// If the update is to add IDs, then the impacted IDs are the IDs being added.
// If the update is to remove IDs, then the impacted IDs are the IDs being removed.
// If the update is to set IDs, then the impacted IDs are the IDs being removed and the IDs being added.
// Any IDs that are already present and are being added are not returned.
// Likewise, any IDs that are not present that are being removed are not returned.
func (u *UpdateIDs) ImpactedIDs(existing []int) []int {
if u == nil {
return nil
}
switch u.Mode {
case RelationshipUpdateModeAdd:
return sliceutil.Exclude(u.IDs, existing)
case RelationshipUpdateModeRemove:
return sliceutil.Intersect(existing, u.IDs)
case RelationshipUpdateModeSet:
// get the difference between the two lists
return sliceutil.NotIntersect(existing, u.IDs)
}
return nil
}
// Apply applies the update to a list of existing ids, returning the result.
func (u *UpdateIDs) Apply(existing []int) []int {
if u == nil {
return existing
}
return applyUpdate(u.IDs, u.Mode, existing)
}
type UpdateStrings struct {
Values []string `json:"values"`
Mode RelationshipUpdateMode `json:"mode"`
}
func (u *UpdateStrings) Strings() []string {
if u == nil {
return nil
}
return u.Values
}
// Apply applies the update to a list of existing strings, returning the result.
func (u *UpdateStrings) Apply(existing []string) []string {
if u == nil {
return existing
}
return applyUpdate(u.Values, u.Mode, existing)
}
// applyUpdate applies values to existing, using the update mode specified.
func applyUpdate[T comparable](values []T, mode RelationshipUpdateMode, existing []T) []T {
switch mode {
case RelationshipUpdateModeAdd:
return sliceutil.AppendUniques(existing, values)
case RelationshipUpdateModeRemove:
return sliceutil.Exclude(existing, values)
case RelationshipUpdateModeSet:
return values
}
return nil
}