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

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

describe("zod import form", () => {
    it("every src file uses default-import z", { timeout: 5000 }, () => {
        const srcDir = new URL("../src", import.meta.url).pathname;
        const offenders: string[] = [];
        for (const file of walk(srcDir)) {
            const content = readFileSync(file, "utf8");
            // Match `import { z }` or `import { z, ... }` from "zod"
            if (/import\s*\{\s*z[\s,}]/.test(content)) {
                offenders.push(file);
            }
        }
        expect(offenders).toEqual([]);
    });
});