feature: add go mod support to "arri use"

tooling/cli/src/commands/use.test.ts

@@ -1,4 +1,9 @@
-import { updateCargoToml, updatePackageJson, updatePubspecYaml } from "./use";
+import {
+    updateCargoToml,
+    updateGoMod,
+    updatePackageJson,
+    updatePubspecYaml,
+} from "./use";
 
 describe("updatePackageJson()", () => {
     it("updates relevant lines and preserves formatting", () => {
@@ -115,3 +120,66 @@ tokio = { version = "1.39.2", features = ["full"] }`;
         expect(output.updated).toBe(true);
     });
 });
+
+describe("updateGoMod()", () => {
+    it("updates relevant lines", () => {
+        const input = `module main
+
+go 1.23.3
+
+require github.com/modiimedia/arri v0.66.0
+
+require (
+	github.com/iancoleman/strcase v0.3.0 // indirect
+	github.com/tidwall/gjson v1.18.0 // indirect
+	github.com/tidwall/match v1.1.1 // indirect
+	github.com/tidwall/pretty v1.2.1 // indirect
+)
+`;
+        const expectedOutput = `module main
+
+go 1.23.3
+
+require github.com/modiimedia/arri v1.12.0
+
+require (
+	github.com/iancoleman/strcase v0.3.0 // indirect
+	github.com/tidwall/gjson v1.18.0 // indirect
+	github.com/tidwall/match v1.1.1 // indirect
+	github.com/tidwall/pretty v1.2.1 // indirect
+)
+`;
+        const output = updateGoMod(input, "1.12.0");
+        expect(output.content).toBe(expectedOutput);
+    });
+    it("updates relevant lines and preserves comments", () => {
+        const input = `module main
+
+go 1.23.3
+
+require github.com/modiimedia/arri v0.66.0 // this is a comment
+
+require (
+	github.com/iancoleman/strcase v0.3.0 // indirect
+	github.com/tidwall/gjson v1.18.0 // indirect
+	github.com/tidwall/match v1.1.1 // indirect
+	github.com/tidwall/pretty v1.2.1 // indirect
+)
+`;
+        const expectedOutput = `module main
+
+go 1.23.3
+
+require github.com/modiimedia/arri v1.12.0 // this is a comment
+
+require (
+	github.com/iancoleman/strcase v0.3.0 // indirect
+	github.com/tidwall/gjson v1.18.0 // indirect
+	github.com/tidwall/match v1.1.1 // indirect
+	github.com/tidwall/pretty v1.2.1 // indirect
+)
+`;
+        const output = updateGoMod(input, "1.12.0");
+        expect(output.content).toBe(expectedOutput);
+    });
+});

tooling/cli/src/commands/use.ts

@@ -110,6 +110,20 @@ export default defineCommand({
         }
         await Promise.all(cargoTomlTasks);
 
+        // GO DEPENDENCIES
+        const goModFiles = await globby(["go.mod", "**/go.mod"]);
+        const goModFileTasks: Promise<any>[] = [];
+        for (const file of goModFiles) {
+            goModFileTasks.push(
+                readFile(path.resolve(file), "utf8").then((content) => {
+                    const result = updateGoMod(content, version);
+                    if (result.updated) {
+                        fileMap[file] = result.content;
+                    }
+                }),
+            );
+        }
+
         // Update all affected files
         const updateTasks: Promise<any>[] = [];
         for (const key of Object.keys(fileMap)) {
@@ -353,3 +367,37 @@ export function updateCargoToml(
     }
     return { updated, content: newLines.join("\n") };
 }
+
+export function updateGoMod(
+    fileContent: string,
+    version: string,
+): { updated: boolean; content: string } {
+    const lines = fileContent.split("\n");
+    const newLines: string[] = [];
+    let updated = false;
+    for (const line of lines) {
+        if (!line.includes("github.com/modiimedia/arri")) {
+            newLines.push(line);
+            continue;
+        }
+        updated = true;
+        const lineParts = line.split(" ");
+        const updatedLineParts: string[] = [];
+        for (const part of lineParts) {
+            if (part.startsWith("v") && isNumberChar(part[1] ?? "")) {
+                updatedLineParts.push(`v${version}`);
+                continue;
+            }
+            updatedLineParts.push(part);
+        }
+        newLines.push(updatedLineParts.join(" "));
+    }
+    return {
+        updated,
+        content: newLines.join("\n"),
+    };
+}
+
+function isNumberChar(char: string) {
+    return !Number.isNaN(Number(char));
+}