Added Cursefoge Source

src/io/file_downloder.ts

@@ -7,14 +7,22 @@ import ModManager from "../mod-manager.js";
 
 export default class FileDownloader {
     static downloadMod(version: Version): void {
+        try {
+            if (version.url == null) {
+                throw new Error("URL was null");
+            }
+
             https.get(version.url, res => {
                 const filePath = path.join(ModManager.FilePaths.MODS_FOLDER_PATH, version.fileName);
                 const writeStream = createWriteStream(filePath);
                 res.pipe(writeStream);
                 writeStream.on("finish", () => writeStream.close());
                 writeStream.on('error', () => {
+                    throw new Error("Error while writing file during download")
+                })
+            })
+        } catch (e) {
             throw new DownloadError(`Failed to download ${version.fileName} from ${version.url}`)
-            })
+        }
-        })
     }
 }

src/mod-manager.ts

@@ -16,6 +16,7 @@ import MigratePossibleCommand from "./commands/migrate_possible.js";
 import MigrateCommand from "./commands/migrate_command.js";
 import ModrinthSource from "./mods/sources/modrinth_source.js";
 import Mods from "./mods/mods.js";
+import {CurseforgeSource} from "./mods/sources/curseforge_source.js";
 
 export default class ModManager {
     public static logger: Logger | null = null;
@@ -42,7 +43,7 @@ export default class ModManager {
         public static readonly MODS_FOLDER_PATH = path.join("mods")
     }
 
-    static async init() {
+    static init() {
         if (Initialiser.isInitialised()) {
             this.logger = ModManager.createLogger();
         }
@@ -55,11 +56,8 @@ export default class ModManager {
             command.registerCommand(this.program);
         }
 
-       /* const source = new CurseforgeSource();
-        console.log(await source.search("lithium"))*/
-
         Mods.registerSource(new ModrinthSource())
-        //Mods.registerSource(new CurseforgeSource(), "CURSEFORGE_API_KEY")
+        Mods.registerSource(new CurseforgeSource(), "CURSEFORGE_API_KEY")
 
         this.program.showSuggestionAfterError();
         this.program.showHelpAfterError();

src/mods/mods.ts

@@ -37,7 +37,7 @@ export default class Mods {
                     id = await source.search(mod);
                 } catch (e) {
                     if (e instanceof ModNotFoundError) {
-                        spinner.stop(`Mod not found on ${source.getSourceName()}`)
+                        spinner.stop(`Mod ${mod} not found on ${source.getSourceName()}`)
                     } else {
                         spinner.error(`An error occurred searching for ${mod} on ${source.getSourceName()}. Skipping ${source.getSourceName()}`)
                         // Try the next source

src/mods/sources/curseforge_source.ts

@@ -1,31 +1,95 @@
-/*import ModSource from "./mod_source.js";
+import ModSource from "./mod_source.js";
 import axios from "axios";
 import MinecraftUtils from "../../util/minecraft_utils.js";
 import ModNotFoundError from "../../errors/mod_not_found_error.js";
+import Util from "../../util/util.js";
+import {format} from "util";
+import Mods from "../mods.js";
+import FileDownloader from "../../io/file_downloder.js";
+import DownloadError from "../../errors/download_error.js";
 
 export class CurseforgeSource implements ModSource {
-    private static readonly BASE_URL: string = "https://api.curseforge.com";
+    private static readonly BASE_URL: string = "https://api.curseforge.com/v1";
-    private static readonly SEARCH_URL: string = `${CurseforgeSource.BASE_URL}/v1/mods/search`;
+    private static readonly SEARCH_URL: string = `${CurseforgeSource.BASE_URL}/mods/search`;
+    private static readonly GET_MOD_URL: string = `${CurseforgeSource.BASE_URL}/mods/%s`
+    private static readonly GET_FILE_URL: string = `${CurseforgeSource.BASE_URL}/mods/%s/files/%s`
+    private static readonly DOWNLOAD_CDN_URL: string = "https://edge.forgecdn.net/files/%s/%s/%s";
 
     private static readonly MINECRAFT_ID: number = 432;
     private static readonly FABRIC_TYPE: number = 4;
 
-    getLatestVersion(id: string, mcVersion: string): Promise<Version> {
+    async getLatestVersion(id: string, mcVersion: string): Promise<Version> {
-        const response = await
+        const modResponse = await this.makeRequest(format(CurseforgeSource.GET_MOD_URL, id));
+        const latestFiles: Array<any> = modResponse.data.latestFilesIndexes;
 
-        return Promise.resolve(undefined);
+        const latestFilesArr = latestFiles.filter(file => file.gameVersion === mcVersion);
+        if (Util.isArrayEmpty(latestFilesArr)) {
+            throw new ModNotFoundError(`Mod with id ${id} has no available versions on ${this.getSourceName()} for Minecraft version ${mcVersion}`)
         }
 
-    getProjectName(id: string): Promise<string> {
+        const fileId = latestFilesArr[0].fileId;
-        return Promise.resolve("");
+        const fileResponse = await this.makeRequest(format(CurseforgeSource.GET_FILE_URL, id, fileId))
+        const fileObj = fileResponse.data;
+
+        const dependencies = [];
+        if (!Util.isArrayEmpty(fileObj.dependencies)) {
+            for (let dependency of fileObj.dependencies) {
+                // If dependency is required
+                if (dependency.relationType == 3) {
+                    dependencies.push(await this.getLatestVersion(dependency.modId, mcVersion));
+                }
+            }
+        }
+
+        const downloadUrl = fileObj.downloadUrl != null ? fileObj.downloadUrl : this.constructDownloadUrl(id, fileObj.fileName);
+
+        return {
+            modId: id.toString(),
+            fileName: fileObj.fileName,
+            url: downloadUrl,
+            versionNumber: fileObj.displayName,
+            dependencies: dependencies
+        }
+    }
+
+    async getProjectName(id: string): Promise<string> {
+        const response = await this.makeRequest(format(CurseforgeSource.GET_MOD_URL, id))
+        return response.data.name;
     }
 
     getSourceName(): string {
         return "Curseforge";
     }
 
-    install(version: Version, essential: boolean): Promise<Mod> {
+    async install(version: Version, essential: boolean): Promise<void> {
-        return Promise.resolve(undefined);
+        try {
+            if (Mods.isModInstalled(version.modId)) {
+                return;
+            }
+
+            const dependencies = [];
+            if (!Util.isArrayEmpty(version.dependencies)) {
+                for (let dependency of version.dependencies) {
+                    await this.install(dependency, essential);
+                    dependencies.push(dependency.modId)
+                }
+            }
+            FileDownloader.downloadMod(version)
+
+            const mod = {
+                name: await this.getProjectName(version.modId),
+                id: version.modId,
+                fileName: version.fileName,
+                version: version.versionNumber,
+                source: this.getSourceName(),
+                essential: essential,
+                dependencies: dependencies
+            }
+
+            Mods.trackMod(mod);
+        } catch (e) {
+            throw new DownloadError(`An error occurred downloading mod with id ${version.modId} from ${this.getSourceName()}`)
+        }
     }
 
     async search(query: string): Promise<string> {
@@ -40,21 +104,24 @@ export class CurseforgeSource implements ModSource {
         }
 
         const response = await this.makeRequest(CurseforgeSource.SEARCH_URL, params);
+        const results = response.data;
 
-        const id = response.data[0].id;
+        if (Util.isArrayEmpty(results)) {
-
-        if (id == undefined) {
             throw new ModNotFoundError(`Mod ${query} could not be found on ${this.getSourceName()}`);
         }
 
-        return id;
+        return results[0].id;
     }
 
-    private async makeRequest(url: string, params: object) {
+    private async makeRequest(url: string, params?: object) {
         if (process.env.CURSEFORGE_API_KEY == undefined) {
             throw new Error("Attempted Curseforge api calls with undefined api key environment variable (CURSEFORGE_API_KEY)")
         }
 
+        if (params == undefined) {
+            params = {}
+        }
+
         const response = await axios.get(url, {
             headers: {
                 "x-api-key": process.env.CURSEFORGE_API_KEY
@@ -64,5 +131,18 @@ export class CurseforgeSource implements ModSource {
         return await response.data;
     }
 
+    private constructDownloadUrl(id: string, fileName: string) {
+        // Some mods have a null download link. Download links follow a pattern such that we can
+        // create the URL ourselves in those rare cases. If download link is invalid, download
+        // will gracefully fail
+        const first = id.toString().substring(0, 4);
+        let last = id.toString().substring(4);
+
+        if (last.charAt(0) == '0') {
+            last = last.replace("0", "");
         }
-*/
+
+        return format(CurseforgeSource.DOWNLOAD_CDN_URL, first, last, fileName);
+    }
+}
+