// The Docker build context is load-bearing in two directions, and both
// failures are silent.
//
// Excluding too little: a worktree left under `.claude/` is copied into the
// image, vitest globs its `test/` tree as well as the real one, and the test
// phase runs the whole suite twice over while reporting success. A compiled
// `bin/quak` is ~100 MB of context nobody needs.
//
// Excluding too much: Prettier 3 reads `.gitignore` as a default ignore file,
// so dropping it from the context silently changes which files the lint
// phase's prettier check looks at compared to `make fmt-check` on the host.
//
// Neither shows up as a build failure, so they are asserted here.
import { describe, expect, it } from "vitest";
import { existsSync, readFileSync } from "node:fs";
import { fileURLToPath } from "node:url";
import { join } from "node:path";

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

const patterns = (name: string): string[] =>
    readFileSync(join(repoRoot, name), "utf-8")
        .split("\n")
        .map((line) => line.trim())
        .filter((line) => line !== "" && !line.startsWith("#"));

const dockerignore = patterns(".dockerignore");

describe(".dockerignore", () => {
    // Everything here is either generated, enormous, or secret. `.claude/` is
    // the correctness one: see the header comment and issue #25.
    it.each([
        ".claude/",
        ".quak/",
        "bin/quak",
        "node_modules",
        "coverage",
        "dist",
        ".vitest-cache/",
        ".nyc_output/",
        "*.tsbuildinfo",
    ])("keeps %s out of the build context", (pattern) => {
        expect(dockerignore).toContain(pattern);
    });

    it("leaves .gitignore in the build context for prettier", () => {
        expect(dockerignore).not.toContain(".gitignore");
    });

    // BuildKit lets a `Dockerfile.dockerignore` shadow the root one; such a
    // file would silently give the build a different, unreviewed context —
    // and eslint's flat config does not ignore dot-directories, so a stray
    // `.claude/` worktree would be linted.
    it("is not shadowed by a Dockerfile.dockerignore", () => {
        expect(existsSync(join(repoRoot, "Dockerfile.dockerignore"))).toBe(
            false,
        );
    });
});