Add 'add' command for installing foodchain

commands/add.ts

@@ -0,0 +1,23 @@
+import { ensureDir } from "@std/fs"
+
+export default async function add(recipe: string) {
+  switch (recipe) {
+    case "foodchain":
+      return foodchain();
+    default:
+      throw new Error(`Unknown recipe: ${recipe}`);
+  }
+}
+
+const foodchain = async () => {
+  console.log("Installing foodchain...")
+
+  const foodchainUrl = "https://raw.githubusercontent.com/pvande/foodchain/refs/heads/main/foodchain.rb"
+
+  const response = await fetch(foodchainUrl)
+  const foodchainText = await response.text()
+
+  await ensureDir("mygame/vendor/pvande/foodchain")
+  await Deno.writeTextFile("mygame/vendor/pvande/foodchain/foodchain.rb", foodchainText)
+  await Deno.writeTextFile("mygame/dependencies.rb", "require \"vendor/pvande/foodchain/foodchain.rb\"\n")
+}

main.ts

@@ -1,5 +1,6 @@
 import { Command } from "npm:commander";
 
+import add from "./commands/add.ts";
 import global from "./commands/global.ts";
 import local from "./commands/local.ts";
 import newCommand from "./commands/new.ts";
@@ -47,6 +48,11 @@ program.command("register")
   )
   .action(actionRunner(register));
 
+program.command("add")
+  .argument("<recipe>", "Name of the recipe to add")
+  .description("Setup a pre-configured library")
+  .action(actionRunner(add));
+
 program.command("global")
   .argument("[version]", "Version of DragonRuby to use")
   .description("Get or set the global version of DragonRuby")