Implemented ModMetadata for Forge

src/metadata/forge/forge-mod-metadata.ts

@@ -0,0 +1,41 @@
+import ModConfig from "../../metadata/mod-config";
+import ModConfigDependency from "../../metadata/mod-config-dependency";
+import Dependency from "../../metadata/dependency";
+import DependencyKind from "../../metadata/dependency-kind";
+
+function createDependency(body: any): Dependency {
+    return new ModConfigDependency({
+        ...body,
+        id: body.modId,
+        version: body.versionRange,
+        kind: body.incompatible && DependencyKind.Breaks || body.embedded && DependencyKind.Includes || body.mandatory && DependencyKind.Depends || DependencyKind.Recommends
+    });
+}
+
+export default class ForgeModMetadata extends ModConfig {
+    public readonly id: string;
+    public readonly name: string;
+    public readonly version: string;
+    public readonly loaders: string[];
+    public readonly dependencies: Dependency[];
+
+    constructor(config: Record<string, unknown>) {
+        super(config);
+        const mods = Array.isArray(this.config.mods) && <any[]>this.config.mods || [];
+        const mod = mods[0];
+        if (!mod) {
+            throw new Error("At least one mod should be specified");
+        }
+
+        this.id = mod.modId;
+        this.name = mod.displayName || this.id;
+        this.version = mod.version || "*";
+        this.loaders = ["forge"];
+        this.dependencies = Object
+            .values(this.config.dependencies || {})
+            .filter(Array.isArray)
+            .flatMap(x => x)
+            .map(createDependency)
+            .filter((x, i, self) => self.findIndex(y => x.id === y.id && x.kind === y.kind) === i);
+    }
+}