import { readdirSync, readFileSync, statSync } from "node:fs";
import { join } from "node:path";
import { fileURLToPath } from "node:url";
import { describe, expect, it } from "@suaveplan/testing/runner";

const pkgRoot = fileURLToPath(new URL("..", import.meta.url));

function walk(dir: string, out: string[] = []): string[] {
    for (const name of readdirSync(dir)) {
        const full = join(dir, name);
        const st = statSync(full);
        if (st.isDirectory()) walk(full, out);
        else if (full.endsWith(".ts") || full.endsWith(".tsx")) out.push(full);
    }
    return out;
}

describe("package shape", () => {
    it("package.json declares no @suaveplan/* runtime deps", {
        timeout: 5000,
    }, () => {
        const pkg = JSON.parse(
            readFileSync(join(pkgRoot, "package.json"), "utf8")
        ) as {
            dependencies?: Record<string, string>;
            peerDependencies?: Record<string, string>;
        };
        const runtime = Object.keys(pkg.dependencies ?? {});
        for (const k of runtime) {
            expect(k.startsWith("@suaveplan/")).toBe(false);
        }
        const peer = Object.keys(pkg.peerDependencies ?? {});
        for (const k of peer) {
            // peerDependencies may declare @suaveplan/types (types-only) but no
            // other @suaveplan/* runtime package.
            if (k.startsWith("@suaveplan/")) {
                expect(k).toBe("@suaveplan/types");
            }
        }
    });

    it("no direct vitest or bun:test imports in src/", {
        timeout: 5000,
    }, () => {
        const srcRoot = join(pkgRoot, "src");
        const files = walk(srcRoot);
        for (const f of files) {
            const text = readFileSync(f, "utf8");
            const lines = text.split("\n");
            for (const line of lines) {
                const m = line.match(/from\s+["'](vitest|bun:test)["']/u);
                expect(m).toBeNull();
            }
        }
    });
});