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

const PKG_ROOT = join(__dirname, "..");
const packageJson = JSON.parse(
    readFileSync(join(PKG_ROOT, "package.json"), "utf-8")
) as {
    sideEffects: unknown;
    bin: Record<string, string>;
    exports: Record<string, unknown>;
};

describe("package shape", () => {
    it("every feature folder has a matching subpath export", {
        timeout: 5000,
    }, () => {
        const srcDir = join(PKG_ROOT, "src");
        const featureFolders = readdirSync(srcDir, {
            withFileTypes: true,
        })
            .filter(
                (e) => e.isDirectory() && e.name !== "types" // shared types — no subpath
            )
            .map((e) => e.name)
            .sort();
        const subpathKeys = Object.keys(packageJson.exports)
            .filter((k) => k.startsWith("./") && k !== "./package.json")
            .map((k) => k.replace(/^\.\//, ""))
            .filter((k) => k !== "" && !k.includes("."));
        for (const folder of featureFolders) {
            expect(subpathKeys).toContain(folder);
        }
    });

    it("sideEffects is false", { timeout: 5000 }, () => {
        expect(packageJson.sideEffects).toBe(false);
    });

    it("bin entry is registered", { timeout: 5000 }, () => {
        expect(packageJson.bin["suaveplan-lint"]).toBe("./dist/bin.js");
    });
});