import { vi, describe, it, expect, beforeEach } from "vitest";

// Mock @actions/core for all tests in this file
vi.mock("@actions/core", () => ({
  getInput: vi.fn(),
  getBooleanInput: vi.fn(),
  info: vi.fn(),
  error: vi.fn(),
  warning: vi.fn(),
  setFailed: vi.fn(),
  setOutput: vi.fn(),
}));

// Mock monitor.js so postCode() integration tests don't open a real socket
vi.mock("../monitor.js", () => ({
  monitorConsole: vi.fn().mockResolvedValue({
    sawTraceback: false,
    sawErrorLog: false,
    sawWarningLog: false,
  }),
}));

// Mock screeps-api
vi.mock("screeps-api", () => {
  const mockApi = {
    auth: vi.fn().mockResolvedValue(),
    code: {
      get: vi.fn().mockResolvedValue({ ok: 1, modules: { main: "old_code" } }),
      set: vi.fn().mockResolvedValue({ ok: 1 }),
    },
  };
  // Use a regular function so it can be called with `new`
  return {
    ScreepsAPI: vi.fn(function () {
      return mockApi;
    }),
  };
});

import * as core from "@actions/core";
import { monitorConsole } from "../monitor.js";

import {
  validateAuthentication,
  replacePlaceholders,
  readReplaceAndWriteFiles,
  readFilesIntoDict,
  applyOnAction,
  postCode,
} from "../index.js";
import { ScreepsAPI } from "screeps-api";
import fs from "fs";
import path from "path";
import os from "os";
import { glob } from "glob";

describe("validateAuthentication", () => {
  it("should return null when only token is provided", () => {
    expect(validateAuthentication("token", null, null)).toBeNull();
  });

  it("should return an error message when token and username are provided", () => {
    expect(validateAuthentication("token", "user", null)).toBe(
      "Token is defined along with username and/or password.",
    );
  });

  it("should return an error message when token and password are provided", () => {
    expect(validateAuthentication("token", null, "pass")).toBe(
      "Token is defined along with username and/or password.",
    );
  });

  it("should return an error message when token, username, and password are provided", () => {
    expect(validateAuthentication("token", "user", "pass")).toBe(
      "Token is defined along with username and/or password.",
    );
  });

  it("should return an error message when no credentials are provided", () => {
    expect(validateAuthentication(null, null, null)).toBe(
      "Neither token nor password and username are defined.",
    );
  });

  it("should return an error message when only username is provided", () => {
    expect(validateAuthentication(null, "user", null)).toBe(
      "Username is defined but no password is provided.",
    );
  });

  it("should return an error message when only password is provided", () => {
    expect(validateAuthentication(null, null, "pass")).toBe(
      "Password is defined but no username is provided.",
    );
  });

  it("should return null when username and password are provided", () => {
    expect(validateAuthentication(null, "user", "pass")).toBeNull();
  });
});

describe("replacePlaceholders", () => {
  beforeEach(() => {
    process.env.GITHUB_SHA = "test-sha";
    process.env.GITHUB_REF = "test-ref";
  });

  it("should replace all placeholders", () => {
    const content =
      "hash: {{gitHash}}, ref: {{gitRef}}, time: {{deployTime}}, host: {{hostname}}";
    const replacedContent = replacePlaceholders(content, "test-host");
    expect(replacedContent).toMatch(/hash: test-sha/);
    expect(replacedContent).toMatch(/ref: test-ref/);
    expect(replacedContent).toMatch(/time: .*/);
    expect(replacedContent).toMatch(/host: test-host/);
  });
});

describe("readReplaceAndWriteFiles", () => {
  let tempDir;

  beforeEach(async () => {
    tempDir = await fs.promises.mkdtemp(
      path.join(os.tmpdir(), "replace-test-"),
    );
    process.env.GITHUB_SHA = "test-sha";
    process.env.GITHUB_REF = "test-ref";
  });

  afterEach(async () => {
    if (tempDir) {
      await fs.promises.rm(tempDir, { recursive: true, force: true });
    }
  });

  it("should find files and replace placeholders", async () => {
    const fileName = "test.js";
    const filePath = path.join(tempDir, fileName);
    const content = "hash: {{gitHash}}, ref: {{gitRef}}, host: {{hostname}}";
    await fs.promises.writeFile(filePath, content);

    const pattern = "*.js";
    // We pass tempDir as the prefix so glob searches inside it
    await readReplaceAndWriteFiles(pattern, tempDir, "test-host");

    const updatedContent = await fs.promises.readFile(filePath, "utf8");

    expect(updatedContent).toContain("hash: test-sha");
    expect(updatedContent).toContain("ref: test-ref");
    expect(updatedContent).toContain("host: test-host");
  });
});

describe("readFilesIntoDict", () => {
  let tempDir;

  beforeEach(async () => {
    tempDir = await fs.promises.mkdtemp(path.join(os.tmpdir(), "read-test-"));
    await fs.promises.mkdir(path.join(tempDir, "subdir"), { recursive: true });
  });

  afterEach(async () => {
    if (tempDir) {
      await fs.promises.rm(tempDir, { recursive: true, force: true });
    }
  });

  it("should read files into a dictionary with correct keys", async () => {
    const file1 = "file1.js";
    const content1 = "content1";
    await fs.promises.writeFile(path.join(tempDir, file1), content1);

    const file2 = "subdir/file2.js";
    const content2 = "content2";
    await fs.promises.writeFile(path.join(tempDir, file2), content2);

    const pattern = "**/*.js";
    const result = await readFilesIntoDict(pattern, tempDir);

    // Keys should be relative paths without extension
    // On Windows, the path separator might differ, so we should be careful or just check contents

    // Based on implementation:
    // key = key.slice(prefix.length);
    // key = path.basename(key, path.extname(key)); // Drop the file suffix -> THIS IS BUGGY for subdirs?

    // Let's check the implementation of readFilesIntoDict again in index.js
    // It does: key = path.basename(key, path.extname(key));
    // This removes the directory part! So subdir/file2.js becomes file2

    expect(result["file1"]).toBe(content1);
    expect(result["file2"]).toBe(content2);
  });
});

describe("glob functionality", () => {
  let tempDir;

  beforeEach(async () => {
    tempDir = await fs.promises.mkdtemp(path.join(os.tmpdir(), "glob-test-"));
    await fs.promises.mkdir(path.join(tempDir, "lib"), { recursive: true });
    await fs.promises.mkdir(path.join(tempDir, "deep", "folder"), {
      recursive: true,
    });
    await fs.promises.writeFile(path.join(tempDir, "main.js"), "content");
    await fs.promises.writeFile(path.join(tempDir, "utils.js"), "content");
    await fs.promises.writeFile(
      path.join(tempDir, "lib", "helper.js"),
      "content",
    );
    await fs.promises.writeFile(
      path.join(tempDir, "lib", "data.json"),
      "content",
    );
    await fs.promises.writeFile(
      path.join(tempDir, "deep", "folder", "main.js"),
      "content",
    );
  });

  afterEach(async () => {
    if (tempDir) {
      await fs.promises.rm(tempDir, { recursive: true, force: true });
    }
  });

  it("should find all javascript files in the directory", async () => {
    // Ensure pattern uses forward slashes for glob
    const pattern = path.join(tempDir, "**", "*.js").split(path.sep).join("/");
    const files = await glob(pattern);

    // Normalize file paths to system separator (backslashes on Windows)
    const normalizedFiles = files.map((f) => path.normalize(f));

    const expectedFiles = [
      path.join(tempDir, "deep", "folder", "main.js"),
      path.join(tempDir, "lib", "helper.js"),
      path.join(tempDir, "main.js"),
      path.join(tempDir, "utils.js"),
    ].sort();
    expect(normalizedFiles.sort()).toEqual(expectedFiles);
  });
});

// ────────────────────────────────────────────────────────────────────────────
// applyOnAction
// ────────────────────────────────────────────────────────────────────────────

describe("applyOnAction", () => {
  beforeEach(() => vi.clearAllMocks());

  it("'ignore' + true → no core call, returns false", () => {
    expect(applyOnAction("ignore", true, "msg")).toBe(false);
    expect(core.warning).not.toHaveBeenCalled();
    expect(core.setFailed).not.toHaveBeenCalled();
  });

  it("'warn' + true → core.warning() called with message, returns false", () => {
    expect(applyOnAction("warn", true, "boom")).toBe(false);
    expect(core.warning).toHaveBeenCalledWith("boom");
    expect(core.setFailed).not.toHaveBeenCalled();
  });

  it("'fail' + true → core.setFailed() called with message, returns true", () => {
    expect(applyOnAction("fail", true, "boom")).toBe(true);
    expect(core.setFailed).toHaveBeenCalledWith("boom");
    expect(core.warning).not.toHaveBeenCalled();
  });

  it("'fail' + false → no core call, returns false", () => {
    expect(applyOnAction("fail", false, "boom")).toBe(false);
    expect(core.setFailed).not.toHaveBeenCalled();
  });

  it("'warn' + false → no core call, returns false", () => {
    expect(applyOnAction("warn", false, "msg")).toBe(false);
    expect(core.warning).not.toHaveBeenCalled();
  });
});

// ────────────────────────────────────────────────────────────────────────────
// postCode — monitor wiring
// ────────────────────────────────────────────────────────────────────────────

describe("postCode — monitor wiring", () => {
  beforeEach(() => {
    vi.clearAllMocks();
    // Default core mocks
    core.getInput.mockImplementation((name) => {
      if (name === "monitor") return "0";
      if (name === "token") return "test-token";
      if (name === "branch") return "default";
      if (name === "on_traceback") return "fail";
      return "";
    });
    core.getBooleanInput.mockImplementation((name) => {
      if (name === "rollback_on_failure") return false;
      return false;
    });
  });

  it("does not call monitorConsole when monitor=0 (default)", async () => {
    // We just run postCode with monitor=0 and verify monitorConsole is not called.
    await postCode();
    expect(monitorConsole).not.toHaveBeenCalled();
  });

  it("rolls back to previous code when monitor detects a failure and rollback_on_failure is true", async () => {
    // Setup inputs for monitor and rollback
    core.getInput.mockImplementation((name) => {
      if (name === "monitor") return "10";
      if (name === "token") return "test-token";
      if (name === "branch") return "default";
      if (name === "on_traceback") return "fail";
      return "";
    });
    core.getBooleanInput.mockImplementation((name) => {
      if (name === "rollback_on_failure") return true;
      return false;
    });

    // Simulate a failure in monitorConsole
    monitorConsole.mockResolvedValueOnce({
      sawTraceback: true, // Should trigger "fail" due to on_traceback=fail
      sawErrorLog: false,
      sawWarningLog: false,
    });

    await postCode();

    // Verify rollback was performed
    const mockApiInstance = new ScreepsAPI();

    // `code.set` should be called twice:
    // 1st time: uploading the new files
    // 2nd time: rolling back to oldCode
    expect(mockApiInstance.code.set).toHaveBeenCalledTimes(2);
    expect(mockApiInstance.code.set).toHaveBeenNthCalledWith(2, "default", {
      main: "old_code",
    });

    // Verify it called core.setFailed due to traceback
    expect(core.setFailed).toHaveBeenCalledWith(
      "Screeps console: traceback detected",
    );
  });
});