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

const SRC = join(__dirname, "..", "src");

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

describe("zod import form", () => {
    it("every src file uses default-import z", { timeout: 5000 }, () => {
        const bad: string[] = [];
        const files = walk(SRC);
        for (const file of files) {
            const text = readFileSync(file, "utf8");
            if (/import\s*\{\s*z\s*[},]/.test(text)) {
                bad.push(file);
            }
        }
        expect(bad).toEqual([]);
    });

    it("source files importing zod use the default form", {
        timeout: 5000,
    }, () => {
        let imports = 0;
        for (const file of walk(SRC)) {
            const text = readFileSync(file, "utf8");
            if (/from\s+["']zod["']/.test(text)) {
                imports++;
                expect(text).toMatch(/import\s+z\s+from\s+["']zod["']/);
            }
        }
        expect(imports).toBeGreaterThan(0);
    });
});