import { mkdtemp, mkdir, rm, writeFile } from "node:fs/promises";
import os from "node:os";
import path from "node:path";
import { afterEach, describe, expect, it } from "vitest";

import {
  collectSourceFiles,
  findForbiddenPluginImports,
  scanForbiddenPluginImports,
} from "./verify-core-build-without-plugins-smoke.mjs";

const tempRoots = [];

async function createFixtureRoot() {
  const root = await mkdtemp(path.join(os.tmpdir(), "featureManifest-core-smoke-"));
  tempRoots.push(root);
  return root;
}

async function writeFixtureFile(root, relativePath, content) {
  const absolutePath = path.join(root, relativePath);
  await mkdir(path.dirname(absolutePath), { recursive: true });
  await writeFile(absolutePath, content, "utf8");
  return absolutePath;
}

function relativeFiles(root, files) {
  return files.map((file) => path.relative(root, file).split(path.sep).join("/"));
}

afterEach(async () => {
  await Promise.all(tempRoots.splice(0).map((root) => rm(root, { recursive: true, force: true })));
});

describe("Feature Manifest core build smoke verifier helpers", () => {
  it("reports zero forbidden imports for clean app and package sources", async () => {
    const root = await createFixtureRoot();
    await writeFixtureFile(root, "app/root.tsx", "import { Link } from 'react-router';\nexport const Root = Link;\n");
    await writeFixtureFile(root, "packages/core/index.ts", "export const coreOnly = true;\n");

    const result = await scanForbiddenPluginImports(root, ["app", "packages"]);

    expect(result.missingRoots).toEqual([]);
    expect(relativeFiles(root, result.files)).toEqual(["app/root.tsx", "packages/core/index.ts"]);
    expect(result.diagnostics).toEqual([]);
  });

  it("reports non-test runtime package imports and plugin path references with file and line metadata", async () => {
    const root = await createFixtureRoot();
    await writeFixtureFile(
      root,
      "app/runtime.ts",
      [
        "import { loadPlugins } from '@toolctrl/plugins';",
        "const allowed = 'not a plugin reference';",
        "const manifestPath = 'packages/plugins/manifest.json';",
      ].join("\n"),
    );

    const result = await scanForbiddenPluginImports(root, ["app"]);

    expect(result.diagnostics).toEqual([
      {
        file: "app/runtime.ts",
        line: 1,
        id: "toolctrl-plugins-package",
        text: "import { loadPlugins } from '@toolctrl/plugins';",
      },
      {
        file: "app/runtime.ts",
        line: 3,
        id: "packages-plugins-path",
        text: "const manifestPath = 'packages/plugins/manifest.json';",
      },
    ]);
  });

  it("scans package manifests and Dockerfile runtime copy paths", async () => {
    const root = await createFixtureRoot();
    await writeFixtureFile(root, "package.json", '{ "dependencies": { "@toolctrl/plugins": "workspace:*" } }\n');
    await writeFixtureFile(root, "Dockerfile", "COPY --from=build /myapp/packages/plugins /myapp/packages/plugins\n");

    const result = await scanForbiddenPluginImports(root, ["package.json", "Dockerfile"]);

    expect(result.diagnostics).toEqual([
      {
        file: "Dockerfile",
        line: 1,
        id: "packages-plugins-path",
        text: "COPY --from=build /myapp/packages/plugins /myapp/packages/plugins",
      },
      {
        file: "package.json",
        line: 1,
        id: "toolctrl-plugins-package",
        text: '{ "dependencies": { "@toolctrl/plugins": "workspace:*" } }',
      },
    ]);
  });

  it("allows plugin package metadata that is not copied into runtime images", async () => {
    const root = await createFixtureRoot();
    await writeFixtureFile(root, "Dockerfile", "COPY packages/plugins/package.json packages/plugins/package.json\n");
    await writeFixtureFile(
      root,
      "scripts/coverage-targets.json",
      '{"name":"packages/plugins","pathPrefixes":["packages/plugins/src/"],"includeGlobs":["packages/plugins/src"]}\n',
    );

    const result = await scanForbiddenPluginImports(root, ["Dockerfile", "scripts"]);

    expect(result.diagnostics).toEqual([]);
  });

  it("ignores tests, docs, plugin-package files, dependency folders, TC metadata, and build output", async () => {
    const root = await createFixtureRoot();
    await writeFixtureFile(root, "app/entry.ts", "export const entry = true;\n");
    await writeFixtureFile(root, "app/entry.test.ts", "import '@toolctrl/plugins';\n");
    await writeFixtureFile(root, "app/readme.md", "packages/plugins docs reference\n");
    await writeFixtureFile(root, "packages/plugins/index.ts", "import '@toolctrl/plugins';\n");
    await writeFixtureFile(root, "app/node_modules/example/index.ts", "import '@toolctrl/plugins';\n");
    await writeFixtureFile(root, "app/.tc/tasks/plan.ts", "import '@toolctrl/plugins';\n");
    await writeFixtureFile(root, "app/build/server.js", "import '@toolctrl/plugins';\n");

    const result = await scanForbiddenPluginImports(root, ["app", "packages"]);

    expect(relativeFiles(root, result.files)).toEqual(["app/entry.ts"]);
    expect(result.diagnostics).toEqual([]);
  });

  it("records absent roots without failing collection", async () => {
    const root = await createFixtureRoot();
    await writeFixtureFile(root, "app/entry.ts", "export const entry = true;\n");

    const result = await collectSourceFiles(root, ["app", "apps", "scripts"]);

    expect(result.roots).toEqual(["app"]);
    expect(result.missingRoots).toEqual(["apps", "scripts"]);
    expect(relativeFiles(root, result.files)).toEqual(["app/entry.ts"]);
  });

  it("detects forbidden lines directly from source text", () => {
    const diagnostics = findForbiddenPluginImports(
      "const pkg = '@toolctrl/plugins';\nconst path = 'packages/plugins/feature';\n",
      "app/direct.ts",
    );

    expect(diagnostics).toEqual([
      {
        file: "app/direct.ts",
        line: 1,
        id: "toolctrl-plugins-package",
        text: "const pkg = '@toolctrl/plugins';",
      },
      {
        file: "app/direct.ts",
        line: 2,
        id: "packages-plugins-path",
        text: "const path = 'packages/plugins/feature';",
      },
    ]);
  });
});