Changed downsampling method to custom type.

api/graphql/generated.go

@@ -170,7 +170,7 @@ type ComplexityRoot struct {
 		SetFaceGroupLabel            func(childComplexity int, faceGroupID int, label *string) int
 		SetPeriodicScanInterval      func(childComplexity int, interval int) int
 		SetScannerConcurrentWorkers  func(childComplexity int, workers int) int
-		SetThumbnailDownsampleMethod func(childComplexity int, method int) int
+		SetThumbnailDownsampleMethod func(childComplexity int, method models.ThumbnailFilter) int
 		ShareAlbum                   func(childComplexity int, albumID int, expire *time.Time, password *string) int
 		ShareMedia                   func(childComplexity int, mediaID int, expire *time.Time, password *string) int
 		UpdateUser                   func(childComplexity int, id int, username *string, password *string, admin *bool) int
@@ -328,7 +328,7 @@ type MutationResolver interface {
 	UserRemoveRootAlbum(ctx context.Context, userID int, albumID int) (*models.Album, error)
 	SetPeriodicScanInterval(ctx context.Context, interval int) (int, error)
 	SetScannerConcurrentWorkers(ctx context.Context, workers int) (int, error)
-	SetThumbnailDownsampleMethod(ctx context.Context, method int) (int, error)
+	SetThumbnailDownsampleMethod(ctx context.Context, method models.ThumbnailFilter) (models.ThumbnailFilter, error)
 	ChangeUserPreferences(ctx context.Context, language *string) (*models.UserPreferences, error)
 	ResetAlbumCover(ctx context.Context, albumID int) (*models.Album, error)
 	SetAlbumCover(ctx context.Context, coverID int) (*models.Album, error)
@@ -1070,7 +1070,7 @@ func (e *executableSchema) Complexity(typeName, field string, childComplexity in
 			return 0, false
 		}
 
-		return e.complexity.Mutation.SetThumbnailDownsampleMethod(childComplexity, args["method"].(int)), true
+		return e.complexity.Mutation.SetThumbnailDownsampleMethod(childComplexity, args["method"].(models.ThumbnailFilter)), true
 
 	case "Mutation.shareAlbum":
 		if e.complexity.Mutation.ShareAlbum == nil {
@@ -2181,10 +2181,10 @@ func (ec *executionContext) field_Mutation_setScannerConcurrentWorkers_args(ctx
 func (ec *executionContext) field_Mutation_setThumbnailDownsampleMethod_args(ctx context.Context, rawArgs map[string]interface{}) (map[string]interface{}, error) {
 	var err error
 	args := map[string]interface{}{}
-	var arg0 int
+	var arg0 models.ThumbnailFilter
 	if tmp, ok := rawArgs["method"]; ok {
 		ctx := graphql.WithPathContext(ctx, graphql.NewPathWithField("method"))
-		arg0, err = ec.unmarshalNInt2int(ctx, tmp)
+		arg0, err = ec.unmarshalNThumbnailFilter2githubᚗcomᚋphotoviewᚋphotoviewᚋapiᚋgraphqlᚋmodelsᚐThumbnailFilter(ctx, tmp)
 		if err != nil {
 			return nil, err
 		}
@@ -7210,7 +7210,7 @@ func (ec *executionContext) _Mutation_setThumbnailDownsampleMethod(ctx context.C
 	resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
 		directive0 := func(rctx context.Context) (interface{}, error) {
 			ctx = rctx // use context from middleware stack in children
-			return ec.resolvers.Mutation().SetThumbnailDownsampleMethod(rctx, fc.Args["method"].(int))
+			return ec.resolvers.Mutation().SetThumbnailDownsampleMethod(rctx, fc.Args["method"].(models.ThumbnailFilter))
 		}
 		directive1 := func(ctx context.Context) (interface{}, error) {
 			if ec.directives.IsAdmin == nil {
@@ -7226,10 +7226,10 @@ func (ec *executionContext) _Mutation_setThumbnailDownsampleMethod(ctx context.C
 		if tmp == nil {
 			return nil, nil
 		}
-		if data, ok := tmp.(int); ok {
+		if data, ok := tmp.(models.ThumbnailFilter); ok {
 			return data, nil
 		}
-		return nil, fmt.Errorf(`unexpected type %T from directive, should be int`, tmp)
+		return nil, fmt.Errorf(`unexpected type %T from directive, should be github.com/photoview/photoview/api/graphql/models.ThumbnailFilter`, tmp)
 	})
 	if err != nil {
 		ec.Error(ctx, err)
@@ -7241,9 +7241,9 @@ func (ec *executionContext) _Mutation_setThumbnailDownsampleMethod(ctx context.C
 		}
 		return graphql.Null
 	}
-	res := resTmp.(int)
+	res := resTmp.(models.ThumbnailFilter)
 	fc.Result = res
-	return ec.marshalNInt2int(ctx, field.Selections, res)
+	return ec.marshalNThumbnailFilter2githubᚗcomᚋphotoviewᚋphotoviewᚋapiᚋgraphqlᚋmodelsᚐThumbnailFilter(ctx, field.Selections, res)
 }
 
 func (ec *executionContext) fieldContext_Mutation_setThumbnailDownsampleMethod(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
@@ -7253,7 +7253,7 @@ func (ec *executionContext) fieldContext_Mutation_setThumbnailDownsampleMethod(c
 		IsMethod:   true,
 		IsResolver: true,
 		Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
-			return nil, errors.New("field of type Int does not have child fields")
+			return nil, errors.New("field of type ThumbnailFilter does not have child fields")
 		},
 	}
 	defer func() {
@@ -10729,10 +10729,10 @@ func (ec *executionContext) _SiteInfo_thumbnailMethod(ctx context.Context, field
 		if tmp == nil {
 			return nil, nil
 		}
-		if data, ok := tmp.(int); ok {
+		if data, ok := tmp.(models.ThumbnailFilter); ok {
 			return data, nil
 		}
-		return nil, fmt.Errorf(`unexpected type %T from directive, should be int`, tmp)
+		return nil, fmt.Errorf(`unexpected type %T from directive, should be github.com/photoview/photoview/api/graphql/models.ThumbnailFilter`, tmp)
 	})
 	if err != nil {
 		ec.Error(ctx, err)
@@ -10744,9 +10744,9 @@ func (ec *executionContext) _SiteInfo_thumbnailMethod(ctx context.Context, field
 		}
 		return graphql.Null
 	}
-	res := resTmp.(int)
+	res := resTmp.(models.ThumbnailFilter)
 	fc.Result = res
-	return ec.marshalNInt2int(ctx, field.Selections, res)
+	return ec.marshalNThumbnailFilter2githubᚗcomᚋphotoviewᚋphotoviewᚋapiᚋgraphqlᚋmodelsᚐThumbnailFilter(ctx, field.Selections, res)
 }
 
 func (ec *executionContext) fieldContext_SiteInfo_thumbnailMethod(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
@@ -10756,7 +10756,7 @@ func (ec *executionContext) fieldContext_SiteInfo_thumbnailMethod(ctx context.Co
 		IsMethod:   false,
 		IsResolver: false,
 		Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
-			return nil, errors.New("field of type Int does not have child fields")
+			return nil, errors.New("field of type ThumbnailFilter does not have child fields")
 		},
 	}
 	return fc, nil
@@ -16802,6 +16802,16 @@ func (ec *executionContext) marshalNString2string(ctx context.Context, sel ast.S
 	return res
 }
 
+func (ec *executionContext) unmarshalNThumbnailFilter2githubᚗcomᚋphotoviewᚋphotoviewᚋapiᚋgraphqlᚋmodelsᚐThumbnailFilter(ctx context.Context, v interface{}) (models.ThumbnailFilter, error) {
+	var res models.ThumbnailFilter
+	err := res.UnmarshalGQL(v)
+	return res, graphql.ErrorOnPath(ctx, err)
+}
+
+func (ec *executionContext) marshalNThumbnailFilter2githubᚗcomᚋphotoviewᚋphotoviewᚋapiᚋgraphqlᚋmodelsᚐThumbnailFilter(ctx context.Context, sel ast.SelectionSet, v models.ThumbnailFilter) graphql.Marshaler {
+	return v
+}
+
 func (ec *executionContext) unmarshalNTime2timeᚐTime(ctx context.Context, v interface{}) (time.Time, error) {
 	res, err := graphql.UnmarshalTime(v)
 	return res, graphql.ErrorOnPath(ctx, err)

api/graphql/models/generated.go

@@ -251,3 +251,53 @@ func (e *OrderDirection) UnmarshalGQL(v interface{}) error {
 func (e OrderDirection) MarshalGQL(w io.Writer) {
 	fmt.Fprint(w, strconv.Quote(e.String()))
 }
+
+// Supported downsampling filters for thumbnail generation
+type ThumbnailFilter string
+
+const (
+	ThumbnailFilterNearestNeighbor   ThumbnailFilter = "NearestNeighbor"
+	ThumbnailFilterBox               ThumbnailFilter = "Box"
+	ThumbnailFilterLinear            ThumbnailFilter = "Linear"
+	ThumbnailFilterMitchellNetravali ThumbnailFilter = "MitchellNetravali"
+	ThumbnailFilterCatmullRom        ThumbnailFilter = "CatmullRom"
+	ThumbnailFilterLanczos           ThumbnailFilter = "Lanczos"
+)
+
+var AllThumbnailFilter = []ThumbnailFilter{
+	ThumbnailFilterNearestNeighbor,
+	ThumbnailFilterBox,
+	ThumbnailFilterLinear,
+	ThumbnailFilterMitchellNetravali,
+	ThumbnailFilterCatmullRom,
+	ThumbnailFilterLanczos,
+}
+
+func (e ThumbnailFilter) IsValid() bool {
+	switch e {
+	case ThumbnailFilterNearestNeighbor, ThumbnailFilterBox, ThumbnailFilterLinear, ThumbnailFilterMitchellNetravali, ThumbnailFilterCatmullRom, ThumbnailFilterLanczos:
+		return true
+	}
+	return false
+}
+
+func (e ThumbnailFilter) String() string {
+	return string(e)
+}
+
+func (e *ThumbnailFilter) UnmarshalGQL(v interface{}) error {
+	str, ok := v.(string)
+	if !ok {
+		return fmt.Errorf("enums must be strings")
+	}
+
+	*e = ThumbnailFilter(str)
+	if !e.IsValid() {
+		return fmt.Errorf("%s is not a valid ThumbnailFilter", str)
+	}
+	return nil
+}
+
+func (e ThumbnailFilter) MarshalGQL(w io.Writer) {
+	fmt.Fprint(w, strconv.Quote(e.String()))
+}

api/graphql/models/site_info.go

@@ -10,7 +10,7 @@ type SiteInfo struct {
 	InitialSetup         bool `gorm:"not null"`
 	PeriodicScanInterval int  `gorm:"not null"`
 	ConcurrentWorkers    int  `gorm:"not null"`
-	ThumbnailMethod   	 int  `gorm:"not null"`
+	ThumbnailMethod   	 ThumbnailFilter  `gorm:"not null"`
 }
 
 func (SiteInfo) TableName() string {
@@ -27,7 +27,7 @@ func DefaultSiteInfo(db *gorm.DB) SiteInfo {
 		InitialSetup:         true,
 		PeriodicScanInterval: 0,
 		ConcurrentWorkers:    defaultConcurrentWorkers,
-		ThumbnailMethod:			0,
+		ThumbnailMethod:			ThumbnailFilterNearestNeighbor,
 	}
 }
 

api/graphql/models/site_info_test.go

@@ -22,7 +22,7 @@ func TestSiteInfo(t *testing.T) {
 	site_info.InitialSetup = false
 	site_info.PeriodicScanInterval = 360
 	site_info.ConcurrentWorkers = 10
-	site_info.ThumbnailMethod = 5
+	site_info.ThumbnailMethod = ThumbnailFilterLanczos
 
 	if !assert.NoError(t, db.Session(&gorm.Session{AllowGlobalUpdate: true}).Save(&site_info).Error) {
 		return
@@ -37,7 +37,7 @@ func TestSiteInfo(t *testing.T) {
 		InitialSetup:         false,
 		PeriodicScanInterval: 360,
 		ConcurrentWorkers:    10,
-		ThumbnailMethod:    	5,
+		ThumbnailMethod:    	ThumbnailFilterLanczos,
 	}, *site_info)
 
 }

api/graphql/resolvers/thumbnails.go

@@ -2,29 +2,35 @@ package resolvers
 
 import (
 	"context"
-	
+
 	"github.com/photoview/photoview/api/graphql/models"
-	"github.com/pkg/errors"
+	// "github.com/pkg/errors"
 	"gorm.io/gorm"
 )
 
-func (r *mutationResolver) SetThumbnailDownsampleMethod(ctx context.Context, method int) (int, error) {
+func (r *mutationResolver) SetThumbnailDownsampleMethod(ctx context.Context, method models.ThumbnailFilter) (models.ThumbnailFilter, error) {
 	db := r.DB(ctx)
 
-	if method > 5 {
-		return 0, errors.New("The requested filter is unsupported, defaulting to nearest neighbor")
-	}
+	// if method > 5 {
+	// 	return 0, errors.New("The requested filter is unsupported, defaulting to nearest neighbor")
+	// }
 
 	if err := db.Session(&gorm.Session{AllowGlobalUpdate: true}).Model(&models.SiteInfo{}).Update("thumbnail_method", method).Error; err != nil {
-		return 0, err
+		return models.ThumbnailFilterNearestNeighbor, err
 	}
 
 	var siteInfo models.SiteInfo
 	if err := db.First(&siteInfo).Error; err != nil {
-		return 0, err
+		return models.ThumbnailFilterNearestNeighbor, err
 	}
 
-	// scanner_queue.ChangeScannerConcurrentWorkers(siteInfo.ConcurrentWorkers)
-
 	return siteInfo.ThumbnailMethod, nil
+
+	// var langTrans *models.LanguageTranslation = nil
+	// if language != nil {
+	// 	lng := models.LanguageTranslation(*language)
+	// 	langTrans = &lng
+	// }
+
+
 }

api/graphql/schema.graphql

@@ -164,7 +164,7 @@ type Mutation {
   setScannerConcurrentWorkers(workers: Int!): Int! @isAdmin
 
   "Set the filter to be used when generating thumbnails"
-  setThumbnailDownsampleMethod(method: Int!): Int! @isAdmin
+  setThumbnailDownsampleMethod(method: ThumbnailFilter!): ThumbnailFilter! @isAdmin
 
   "Change user preferences for the logged in user"
   changeUserPreferences(language: String): UserPreferences! @isAuthorized
@@ -250,6 +250,16 @@ type ShareToken {
   media: Media
 }
 
+"Supported downsampling filters for thumbnail generation"
+enum ThumbnailFilter {
+  NearestNeighbor,
+  Box,
+	Linear,
+	MitchellNetravali,
+	CatmullRom,
+	Lanczos,
+}
+
 "General information about the site"
 type SiteInfo {
   "Whether or not the initial setup wizard should be shown"
@@ -261,7 +271,7 @@ type SiteInfo {
   "How many max concurrent scanner jobs that should run at once"
   concurrentWorkers: Int! @isAdmin
   "The filter to use when generating thumbnails"
-  thumbnailMethod: Int! @isAdmin
+  thumbnailMethod: ThumbnailFilter! @isAdmin
 }
 
 type User {