#!/usr/bin/env bun

import { describe, test, expect, beforeEach, afterEach } from "bun:test";
import { checkHumanActor } from "../src/github/validation/actor";
import { _resetPlatformCache } from "../src/platform/detector";
import type { Octokit } from "@octokit/rest";
import { createMockContext } from "./mockContext";

function createMockOctokit(userType: string): Octokit {
  return {
    users: {
      getByUsername: async () => ({
        data: {
          type: userType,
        },
      }),
    },
  } as unknown as Octokit;
}

describe("checkHumanActor", () => {
  test("should pass for human actor", async () => {
    const mockOctokit = createMockOctokit("User");
    const context = createMockContext();
    context.actor = "human-user";

    await expect(
      checkHumanActor(mockOctokit, context),
    ).resolves.toBeUndefined();
  });

  test("should throw error for bot actor when not allowed", async () => {
    const mockOctokit = createMockOctokit("Bot");
    const context = createMockContext();
    context.actor = "test-bot[bot]";
    context.inputs.allowedBots = "";

    await expect(checkHumanActor(mockOctokit, context)).rejects.toThrow(
      "Workflow initiated by non-human actor: test-bot (type: Bot). Add bot to allowed_bots list or use '*' to allow all bots.",
    );
  });

  test("should pass for bot actor when all bots allowed", async () => {
    const mockOctokit = createMockOctokit("Bot");
    const context = createMockContext();
    context.actor = "test-bot[bot]";
    context.inputs.allowedBots = "*";

    await expect(
      checkHumanActor(mockOctokit, context),
    ).resolves.toBeUndefined();
  });

  test("should pass for specific bot when in allowed list", async () => {
    const mockOctokit = createMockOctokit("Bot");
    const context = createMockContext();
    context.actor = "dependabot[bot]";
    context.inputs.allowedBots = "dependabot[bot],renovate[bot]";

    await expect(
      checkHumanActor(mockOctokit, context),
    ).resolves.toBeUndefined();
  });

  test("should pass for specific bot when in allowed list (without [bot])", async () => {
    const mockOctokit = createMockOctokit("Bot");
    const context = createMockContext();
    context.actor = "dependabot[bot]";
    context.inputs.allowedBots = "dependabot,renovate";

    await expect(
      checkHumanActor(mockOctokit, context),
    ).resolves.toBeUndefined();
  });

  test("should throw error for bot not in allowed list", async () => {
    const mockOctokit = createMockOctokit("Bot");
    const context = createMockContext();
    context.actor = "other-bot[bot]";
    context.inputs.allowedBots = "dependabot[bot],renovate[bot]";

    await expect(checkHumanActor(mockOctokit, context)).rejects.toThrow(
      "Workflow initiated by non-human actor: other-bot (type: Bot). Add bot to allowed_bots list or use '*' to allow all bots.",
    );
  });

  test("should throw error for bot not in allowed list (without [bot])", async () => {
    const mockOctokit = createMockOctokit("Bot");
    const context = createMockContext();
    context.actor = "other-bot[bot]";
    context.inputs.allowedBots = "dependabot,renovate";

    await expect(checkHumanActor(mockOctokit, context)).rejects.toThrow(
      "Workflow initiated by non-human actor: other-bot (type: Bot). Add bot to allowed_bots list or use '*' to allow all bots.",
    );
  });

  test("should treat undefined actor type as human (GitHub compatibility)", async () => {
    // Edge case: GitHub API returns no `type` field
    const mockOctokit = {
      users: {
        getByUsername: async () => ({
          data: {},
        }),
      },
    } as unknown as Octokit;
    const context = createMockContext();
    context.actor = "unknown-user";

    await expect(
      checkHumanActor(mockOctokit, context),
    ).resolves.toBeUndefined();
  });

  describe("Forgejo platform", () => {
    let savedPlatform: string | undefined;
    let savedServerUrl: string | undefined;

    beforeEach(() => {
      _resetPlatformCache();
      savedPlatform = process.env.PLATFORM;
      savedServerUrl = process.env.GITHUB_SERVER_URL;
      process.env.PLATFORM = "forgejo";
      // Ensure cross-validation doesn't reject PLATFORM=forgejo
      process.env.GITHUB_SERVER_URL = "https://git.example.com";
    });

    afterEach(() => {
      if (savedPlatform !== undefined) process.env.PLATFORM = savedPlatform;
      else delete process.env.PLATFORM;
      if (savedServerUrl !== undefined)
        process.env.GITHUB_SERVER_URL = savedServerUrl;
      else delete process.env.GITHUB_SERVER_URL;
      _resetPlatformCache();
    });

    test("should skip GitHub API actor check on Forgejo for regular users", async () => {
      let apiCalled = false;
      const mockOctokit = {
        users: {
          getByUsername: async () => {
            apiCalled = true;
            return { data: {} };
          },
        },
      } as unknown as Octokit;
      const context = createMockContext();
      context.actor = "forgejo-user";

      await expect(
        checkHumanActor(mockOctokit, context),
      ).resolves.toBeUndefined();
      expect(apiCalled).toBe(false);
    });

    test("should skip actor check for bot-like names that don't match bot_name", async () => {
      let apiCalled = false;
      const mockOctokit = {
        users: {
          getByUsername: async () => {
            apiCalled = true;
            return { data: { type: "Bot" } };
          },
        },
      } as unknown as Octokit;
      const context = createMockContext();
      context.actor = "some-bot[bot]";
      context.inputs.allowedBots = "";

      await expect(
        checkHumanActor(mockOctokit, context),
      ).resolves.toBeUndefined();
      expect(apiCalled).toBe(false);
    });

    test("should block self-trigger when actor matches bot_name (with [bot] suffix)", async () => {
      const mockOctokit = createMockOctokit("User");
      const context = createMockContext();
      // Default botName is "claude[bot]" from CLAUDE_BOT_LOGIN
      context.actor = "claude[bot]";

      await expect(checkHumanActor(mockOctokit, context)).rejects.toThrow(
        "Blocking self-trigger on Forgejo",
      );
    });

    test("should block self-trigger when actor matches bot_name without [bot] suffix", async () => {
      const mockOctokit = createMockOctokit("User");
      const context = createMockContext();
      context.inputs.botName = "claude[bot]";
      context.actor = "claude";

      await expect(checkHumanActor(mockOctokit, context)).rejects.toThrow(
        "Blocking self-trigger on Forgejo",
      );
    });

    test("should block self-trigger with custom bot_name", async () => {
      const mockOctokit = createMockOctokit("User");
      const context = createMockContext();
      context.inputs.botName = "my-assistant";
      context.actor = "my-assistant";

      await expect(checkHumanActor(mockOctokit, context)).rejects.toThrow(
        "Blocking self-trigger on Forgejo",
      );
    });
  });
});