feat: handle HEAD on mod download endpoints (#83)

Author: mircearoata

nodes/mod.go

@@ -389,7 +389,8 @@ func downloadModVersion(c echo.Context) error {
 		return c.String(404, "version not found, modID:"+modID+" versionID:"+versionID)
 	}
 
-	if redis.CanIncrement(c.RealIP(), "download", "version:"+versionID, time.Hour*4) {
+	if c.Request().Method == echo.GET &&
+		redis.CanIncrement(c.RealIP(), "download", "version:"+versionID, time.Hour*4) {
 		_ = version.Update().AddDownloads(1).Exec(c.Request().Context())
 	}
 
@@ -444,7 +445,8 @@ func downloadModVersionTarget(c echo.Context) error {
 		return c.String(404, "target not found, modID:"+modID+" versionID:"+versionID+" target:"+target)
 	}
 
-	if redis.CanIncrement(c.RealIP(), "download", "version:"+versionID, time.Hour*4) {
+	if c.Request().Method == echo.GET &&
+		redis.CanIncrement(c.RealIP(), "download", "version:"+versionID, time.Hour*4) {
 		_ = version.Update().AddDownloads(1).Exec(c.Request().Context())
 	}
 

nodes/routes.go

@@ -17,7 +17,9 @@ func RegisterModRoutes(router *echo.Group) {
 
 	router.GET("/:modId/versions/:versionId", dataWrapper(getModVersion))
 	router.GET("/:modId/versions/:versionId/download", downloadModVersion)
+	router.HEAD("/:modId/versions/:versionId/download", downloadModVersion)
 	router.GET("/:modId/versions/:versionId/:target/download", downloadModVersionTarget)
+	router.HEAD("/:modId/versions/:versionId/:target/download", downloadModVersionTarget)
 }
 
 func RegisterModsRoutes(router *echo.Group) {
@@ -50,5 +52,7 @@ func RegisterUsersRoutes(router *echo.Group) {
 func RegisterVersionRoutes(router *echo.Group) {
 	router.GET("/:versionId", dataWrapper(getVersion))
 	router.GET("/:versionId/download", downloadVersion)
+	router.HEAD("/:versionId/download", downloadVersion)
 	router.GET("/:versionId/:target/download", downloadModTarget)
+	router.HEAD("/:versionId/:target/download", downloadModTarget)
 }

nodes/version.go

@@ -59,7 +59,8 @@ func downloadVersion(c echo.Context) error {
 		return c.String(404, "version not found")
 	}
 
-	if redis.CanIncrement(c.RealIP(), "download", "version:"+versionID, time.Hour*4) {
+	if c.Request().Method == echo.GET &&
+		redis.CanIncrement(c.RealIP(), "download", "version:"+versionID, time.Hour*4) {
 		_ = version.Update().AddDownloads(1).Exec(c.Request().Context())
 	}
 
@@ -100,7 +101,8 @@ func downloadModTarget(c echo.Context) error {
 		return c.String(404, "target not found, versionID:"+versionID+" target:"+target)
 	}
 
-	if redis.CanIncrement(c.RealIP(), "download", "version:"+versionID, time.Hour*4) {
+	if c.Request().Method == echo.GET &&
+		redis.CanIncrement(c.RealIP(), "download", "version:"+versionID, time.Hour*4) {
 		_ = version.Update().AddDownloads(1).Exec(c.Request().Context())
 	}