feat：模组加载器更改

backend/src/modloader/fabric.ts

@@ -0,0 +1,73 @@
+import got, { Got } from "got";
+import { fastdownload, xfastdownload } from "../utils/utils.js";
+
+interface ILatestLoader{
+    url:string,
+    stable:boolean
+}
+
+interface IServer{
+    libraries:{
+        name:string
+    }[]
+}
+
+export class Fabric{
+    minecraft: string;
+    loaderVersion: string;
+    got:Got
+    constructor(minecraft:string,loaderVersion:string) {
+        this.minecraft = minecraft;
+        this.loaderVersion = loaderVersion;
+        this.got = got.extend({
+            prefixUrl:"https://bmclapi2.bangbang93.com/",
+            headers:{
+                "User-Agent": "DeEarthX"
+            }
+        })
+    }
+
+    async setup(){
+        await this.libraries()
+    }
+
+    async libraries(){
+        const res = await this.got.get(`fabric-meta/v2/versions/loader/${this.minecraft}/${this.loaderVersion}/server/json`).json<IServer>()
+        const _downlist: [string,string][]= []
+        res.libraries.forEach(e=>{
+            const path = this.MTP(e.name)
+            _downlist.push([`https://bmclapi2.bangbang93.com/maven/${path}`,`./fabric/libraries/${path}`])
+        })
+        await xfastdownload(_downlist)
+    }
+
+    async getLaestLoader(){
+        let downurl = ""
+        const res = await this.got.get("fabric-meta/v2/versions/installer").json<ILatestLoader[]>()
+        res.forEach(e=>{
+            if(e.stable){
+                downurl = `https://bmclapi2.bangbang93.com/maven/${new URL(e.url).pathname.slice(1)}`
+                return;
+            }
+        })
+        await fastdownload([downurl,`./fabric/fabric-installer.jar`])
+    }
+
+    private MTP(string:string){
+        const mjp =  string.replace(/^\[|\]$/g, '')
+        const OriginalName = mjp.split("@")[0]
+        const x = OriginalName.split(":")
+        const _mappingType = mjp.split('@')[1];
+        let mappingType = ""
+        if (_mappingType){
+            mappingType = _mappingType
+        }else{
+            mappingType = "jar"
+        }
+            if(x[3]){
+                return `${x[0].replace(/\./g, '/')}/${x[1]}/${x[2]}/${x[1]}-${x[2]}-${x[3]}.${mappingType}`
+            }else{
+                return `${x[0].replace(/\./g, '/')}/${x[1]}/${x[2]}/${x[1]}-${x[2]}.${mappingType}`
+        }
+    }    
+}