import { join } from "node:path";
import type { ProjectCandidate } from "../domain/detection.ts";
import type { ProjectProbe } from "../ports/project-probe.ts";

export type DetectGoProjectInput = {
	cwd: string;
	probe: ProjectProbe;
};

export async function detectGoProject({
	cwd,
	probe,
}: DetectGoProjectInput): Promise<ProjectCandidate | undefined> {
	if (await probe.exists(join(cwd, "go.mod"))) {
		return {
			language: "go",
			root: cwd,
			confidence: "high",
			reason: "found go.mod",
		};
	}

	if (await probe.exists(join(cwd, "go.work"))) {
		return {
			language: "go",
			root: cwd,
			confidence: "high",
			reason: "found go.work",
		};
	}

	return undefined;
}