consolidate supported thumbnail extensions into site config; remove dedicated API

pkg/thumb/builtin.go

@@ -19,6 +19,10 @@ import (
 
 const thumbTempFolder = "thumb"
 
+// BuiltinSupportedExts lists file extensions supported by the built-in
+// thumbnail generator. Extensions are lowercased and do not include the dot.
+var BuiltinSupportedExts = []string{"jpg", "jpeg", "png", "gif"}
+
 // Thumb 缩略图
 type Thumb struct {
 	src image.Image

routers/controllers/file.go

@@ -436,17 +436,3 @@ func ResetThumb(c *gin.Context) {
     c.JSON(200, serializer.Response{Data: resp})
 }
 
-// ThumbExts gets supported thumbnail extensions
-func ThumbExts(c *gin.Context) {
-    service := ParametersFromContext[*explorer.ThumbExtsService](c, explorer.ThumbExtsParamCtx{})
-    resp, err := service.Get(c)
-    if err != nil {
-        c.JSON(200, serializer.Err(c, err))
-        c.Abort()
-        return
-    }
-
-    c.JSON(200, serializer.Response{
-        Data: resp,
-    })
-}

routers/router.go

@@ -614,22 +614,17 @@ func initMasterRouter(dep dependency.Dep) *gin.Engine {
 					controllers.ServeEntity,
 				)
 			}
-			// 获取缩略图
+			// get thumb
 			file.GET("thumb",
 				middleware.ContextHint(),
 				controllers.FromQuery[explorer.FileThumbService](explorer.FileThumbParameterCtx{}),
 				controllers.Thumb,
 			)
-            // 重置缩略图
+			// reset thumb
 			file.POST("thumb/reset",
 				controllers.FromJSON[explorer.ResetThumbService](explorer.ResetThumbParamCtx{}),
 				middleware.ValidateBatchFileCount(dep, explorer.ResetThumbParamCtx{}),
 				controllers.ResetThumb,
-            )
-			// 获取支持的缩略图扩展名
-			file.GET("thumb/exts",
-				controllers.FromQuery[explorer.ThumbExtsService](explorer.ThumbExtsParamCtx{}),
-				controllers.ThumbExts,
 			)
 			// Delete files
 			file.DELETE("",

service/basic/site.go

@@ -1,10 +1,14 @@
 package basic
 
 import (
+    "sort"
+    "strings"
+
     "github.com/cloudreve/Cloudreve/v4/application/dependency"
     "github.com/cloudreve/Cloudreve/v4/inventory"
     "github.com/cloudreve/Cloudreve/v4/inventory/types"
     "github.com/cloudreve/Cloudreve/v4/pkg/setting"
+    "github.com/cloudreve/Cloudreve/v4/pkg/thumb"
     "github.com/cloudreve/Cloudreve/v4/service/user"
     "github.com/gin-gonic/gin"
     "github.com/mojocn/base64Captcha"
@@ -49,6 +53,9 @@ type SiteConfig struct {
 	ThumbnailHeight   int                       `json:"thumbnail_height,omitempty"`
     CustomProps       []types.CustomProps       `json:"custom_props,omitempty"`
 
+    // Thumbnail section
+    ThumbExts []string `json:"thumb_exts,omitempty"`
+
 	// App settings
 	AppPromotion bool `json:"app_promotion,omitempty"`
 
@@ -118,6 +125,47 @@ func (s *GetSettingService) GetSiteConfig(c *gin.Context) (*SiteConfig, error) {
         return &SiteConfig{
             AppPromotion: appSetting.Promotion,
         }, nil
+    case "thumb":
+        // Return supported thumbnail extensions from enabled generators.
+        exts := map[string]bool{}
+        if settings.BuiltinThumbGeneratorEnabled(c) {
+            for _, e := range thumb.BuiltinSupportedExts {
+                exts[e] = true
+            }
+        }
+        if settings.FFMpegThumbGeneratorEnabled(c) {
+            for _, e := range settings.FFMpegThumbExts(c) {
+                exts[strings.ToLower(e)] = true
+            }
+        }
+        if settings.VipsThumbGeneratorEnabled(c) {
+            for _, e := range settings.VipsThumbExts(c) {
+                exts[strings.ToLower(e)] = true
+            }
+        }
+        if settings.LibreOfficeThumbGeneratorEnabled(c) {
+            for _, e := range settings.LibreOfficeThumbExts(c) {
+                exts[strings.ToLower(e)] = true
+            }
+        }
+        if settings.MusicCoverThumbGeneratorEnabled(c) {
+            for _, e := range settings.MusicCoverThumbExts(c) {
+                exts[strings.ToLower(e)] = true
+            }
+        }
+        if settings.LibRawThumbGeneratorEnabled(c) {
+            for _, e := range settings.LibRawThumbExts(c) {
+                exts[strings.ToLower(e)] = true
+            }
+        }
+
+        // map -> sorted slice
+        result := make([]string, 0, len(exts))
+        for e := range exts {
+            result = append(result, e)
+        }
+        sort.Strings(result)
+        return &SiteConfig{ThumbExts: result}, nil
     default:
         break
     }

service/explorer/thumb.go

@@ -4,8 +4,6 @@ import (
     "context"
     "errors"
     "fmt"
-    "sort"
-    "strings"
 
     "github.com/cloudreve/Cloudreve/v4/application/dependency"
     "github.com/cloudreve/Cloudreve/v4/inventory"
@@ -113,76 +111,4 @@ func (s *ResetThumbService) Reset(c context.Context) (*ResetThumbResponse, error
 	return &ResetThumbResponse{}, nil
 }
 
-type (
-	// ThumbExtsParamCtx defines context for ThumbExtsService
-	ThumbExtsParamCtx struct{}
-
-	// ThumbExtsService handles getting supported thumbnail extensions
-	ThumbExtsService struct{}
-
-	// ThumbExtsResponse represents the response for supported extensions
-	ThumbExtsResponse struct {
-		Exts []string `json:"exts"`
-	}
-)
-
-// Get returns all supported thumbnail extensions from enabled generators
-func (s *ThumbExtsService) Get(c context.Context) (*ThumbExtsResponse, error) {
-    dep := dependency.FromContext(c)
-    settings := dep.SettingProvider()
-
-    extensions := make(map[string]bool)
-
-	// Built-in generator (always supports these if enabled)
-	if settings.BuiltinThumbGeneratorEnabled(c) {
-		for _, ext := range []string{"jpg", "jpeg", "png", "gif"} {
-			extensions[ext] = true
-		}
-	}
-
-    // FFMpeg generator
-    if settings.FFMpegThumbGeneratorEnabled(c) {
-        for _, ext := range settings.FFMpegThumbExts(c) {
-            extensions[strings.ToLower(ext)] = true
-        }
-    }
-
-    // Vips generator
-    if settings.VipsThumbGeneratorEnabled(c) {
-        for _, ext := range settings.VipsThumbExts(c) {
-            extensions[strings.ToLower(ext)] = true
-        }
-    }
-
-    // LibreOffice generator
-    if settings.LibreOfficeThumbGeneratorEnabled(c) {
-        for _, ext := range settings.LibreOfficeThumbExts(c) {
-            extensions[strings.ToLower(ext)] = true
-        }
-    }
-
-    // Music cover generator
-    if settings.MusicCoverThumbGeneratorEnabled(c) {
-        for _, ext := range settings.MusicCoverThumbExts(c) {
-            extensions[strings.ToLower(ext)] = true
-        }
-    }
-
-    // LibRaw generator
-    if settings.LibRawThumbGeneratorEnabled(c) {
-        for _, ext := range settings.LibRawThumbExts(c) {
-            extensions[strings.ToLower(ext)] = true
-        }
-    }
-
-	// Convert map to sorted slice
-	result := make([]string, 0, len(extensions))
-	for ext := range extensions {
-		result = append(result, ext)
-	}
-
-	// Sort extensions alphabetically using Go's built-in sort
-	sort.Strings(result)
-
-	return &ThumbExtsResponse{Exts: result}, nil
-}
+// (Thumb ext list API removed; use site config section "thumb")