maven version lookup

server/neoforge.go

@@ -2,6 +2,7 @@ package server
 
 import (
 	"fmt"
+	"github.com/nothub/mrpack-install/maven"
 	"github.com/nothub/mrpack-install/web"
 	"log"
 )
@@ -11,18 +12,24 @@ type NeoForgeInstaller struct {
 	NeoForgeVersion  string
 }
 
-// TODO maven version lookup: https://maven.neoforged.net/releases/net/neoforged/forge/maven-metadata.xml
-
 func (inst *NeoForgeInstaller) Install(serverDir string, serverFile string) error {
-	// TODO: implement automatic lookup for latest version
-	if inst.NeoForgeVersion == "" || inst.NeoForgeVersion == "latest" {
-		log.Fatalln("automatic NeoForge version lookup not implemented\nplease set server version with --flavor-version flag")
+	version := inst.NeoForgeVersion
+	if version == "" || version == "latest" {
+		meta, err := maven.FetchMetadata("https://maven.neoforged.net/releases/net/neoforged/neoforge/maven-metadata.xml")
+		if err != nil {
+			return err
+		}
+		// TODO: instead of using the latest release, match against the latest
+		//       non-pre-release version that matches the minecraft version
+		version = meta.Versioning.Release
 	}
-	u := fmt.Sprintf("https://maven.neoforged.net/releases/net/neoforged/neoforge/%s/neoforge-%s-installer.jar", inst.NeoForgeVersion, inst.NeoForgeVersion)
+
+	u := fmt.Sprintf("https://maven.neoforged.net/releases/net/neoforged/neoforge/%s/neoforge-%s-installer.jar", version, version)
 	file, err := web.DefaultClient.DownloadFile(u, serverDir, serverFile)
 	if err != nil {
 		return err
 	}
+
 	log.Println("Server jar downloaded to:", file)
 	return nil
 }

web/features.go

@@ -68,7 +68,7 @@ func (c *Client) DownloadFile(url string, downloadDir string, fileName string) (
 
 	// TODO: this needs to (silently?) overwrite existing files!
 
-	log.Printf("downloading: %s", url)
+	log.Printf("Downloading file from: %s", url)
 
 	request, err := http.NewRequest(http.MethodGet, url, nil)
 	if err != nil {