fix: 修复版本获取

Author: jdnjk

core/installer.go

@@ -36,33 +36,32 @@ func RunInstaller(installerPath string, loader string, version string, loaderVer
 	}
 	var cmd *exec.Cmd
 	if Download == "bmclapi" {
-		if loader == "forge" || loader == "neoforge" {
+		if loader == "forge" {
+			cmd = exec.Command(javaPath, "-jar", installerPath, "--installServer", "--mirror", "https://bmclapi2.bangbang93.com/maven/")
+		} else if loader == "neoforge" {
 			cmd = exec.Command(javaPath, "-jar", installerPath, "--installServer", "--mirror", "https://bmclapi2.bangbang93.com/maven/")
 		} else if loader == "fabric" {
-			args := []string{javaPath, "-jar", installerPath, "server"}
-			if version != "latest" {
-				args = append(args, "-mcversion", version)
-			}
-			if loaderVersion != "latest" {
-				args = append(args, "-loader", loaderVersion)
-			}
-			cmd = exec.Command(args[0], args[1:]...)
+			cmd = exec.Command(
+				javaPath, "-jar", installerPath, "server",
+				"-mavenurl", "https://bmclapi2.bangbang93.com/maven/",
+				"-metaurl", "https://bmclapi2.bangbang93.com/fabric-meta/",
+				"-mcversion", version,
+				"-loader", loaderVersion,
+			)
 		} else {
 			cmd = exec.Command(javaPath, "-jar", installerPath)
 		}
 	} else {
-		if loader == "forge" || loader == "neoforge" {
+		if loader == "forge" {
+			cmd = exec.Command(javaPath, "-jar", installerPath, "--installServer")
+		} else if loader == "neoforge" {
 			cmd = exec.Command(javaPath, "-jar", installerPath, "--installServer")
 		} else if loader == "fabric" {
-			args := []string{javaPath, "-jar", installerPath, "server"}
-
-			if version != "latest" {
-				args = append(args, "-mcversion", version)
-			}
-			if loaderVersion != "latest" {
-				args = append(args, "-loader", loaderVersion)
-			}
-			cmd = exec.Command(args[0], args[1:]...)
+			cmd = exec.Command(
+				javaPath, "-jar", installerPath, "server",
+				"-mcversion", version,
+				"-loader", loaderVersion,
+			)
 		} else {
 			cmd = exec.Command(javaPath, "-jar", installerPath)
 		}

pkg/fabric.go

@@ -1,32 +1,103 @@
 package pkg
 
 import (
+	"encoding/json"
 	"fmt"
 	"log"
+	"net/http"
 	"path/filepath"
 
 	"github.com/autoinst/AutoInstall/core"
 )
 
 func FabricB(config core.InstConfig, simpfun bool, mise bool) {
-	var installerURL string
-	installerURL = "https://maven.fabricmc.net/net/fabricmc/fabric-installer/1.0.1/fabric-installer-1.0.1.jar"
+	if config.Version == "latest" {
+		latestRelease, err := FetchLatestFabricMinecraftVersion()
+		if err != nil {
+			log.Println("获取最新我的世界版本失败:", err)
+			return
+		}
+		config.Version = latestRelease
+		stableLoader, err := FetchLatestStableFabricLoaderVersion()
+		if err != nil {
+			log.Println("获取最新 Fabric Loader 版本失败:", err)
+			return
+		}
+		config.LoaderVersion = stableLoader
+	}
+	if config.LoaderVersion == "latest" {
+		stableLoader, err := FetchLatestStableFabricLoaderVersion()
+		if err != nil {
+			log.Println("获取最新 Fabric Loader 版本失败:", err)
+			return
+		}
+		config.LoaderVersion = stableLoader
+	}
+
+	installerURL := "https://maven.fabricmc.net/net/fabricmc/fabric-installer/1.0.1/fabric-installer-1.0.1.jar"
 	installerPath := filepath.Join("./.autoinst/cache", "fabric-installer-1.0.1.jar")
 	fmt.Println("当前为 fabric 加载器，正在下载:", installerURL)
 	if err := core.DownloadFile(installerURL, installerPath); err != nil {
 		log.Println("下载 fabric 失败:", err)
 		return
 	}
 	fmt.Println("fabric 安装器下载完成:", installerPath)
+
 	librariesDir := "./libraries"
 	if err := DownloadServerJar(config.Version, config.Loader, librariesDir); err != nil {
-		log.Println("下载mc服务端失败:", err)
+		log.Println("下载 mc 服务端失败:", err)
 		return
 	}
 	fmt.Println("服务端下载完成")
+
 	if err := core.RunInstaller(installerPath, config.Loader, config.Version, config.LoaderVersion, config.Download, simpfun, mise); err != nil {
 		log.Println("运行安装器失败:", err)
 		return
 	}
 	core.RunScript(config.Version, config.Loader, config.LoaderVersion, simpfun, mise)
 }
+
+func FetchLatestFabricMinecraftVersion() (string, error) {
+	resp, err := http.Get("https://launchermeta.mojang.com/mc/game/version_manifest.json")
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	var result struct {
+		Latest struct {
+			Release string `json:"release"`
+		} `json:"latest"`
+	}
+
+	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
+		return "", err
+	}
+
+	return result.Latest.Release, nil
+}
+
+func FetchLatestStableFabricLoaderVersion() (string, error) {
+	resp, err := http.Get("https://meta.fabricmc.net/v2/versions/loader")
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	var versions []struct {
+		Version string `json:"version"`
+		Stable  bool   `json:"stable"`
+	}
+
+	if err := json.NewDecoder(resp.Body).Decode(&versions); err != nil {
+		return "", err
+	}
+
+	for _, v := range versions {
+		if v.Stable {
+			return v.Version, nil
+		}
+	}
+
+	return "", fmt.Errorf("未找到稳定版本的Fabric Loader")
+}