import { describe, it, expect, vi, beforeEach } from "vitest";
import { getAllTools, getToolById, executeTool, TOOL_REGISTRY } from "./tools";

// Mock agents module
vi.mock("./agents", () => ({
  getAgentById: vi.fn(),
  getAgentAccessControl: vi.fn(),
}));

import { getAgentById, getAgentAccessControl } from "./agents";

const mockAgent = {
  id: 1,
  name: "Test Agent",
  model: "gpt-4",
  provider: "OpenAI",
  allowedTools: ["http_get", "http_post", "file_read"],
  temperature: "0.7",
  maxTokens: 2048,
};

describe("Tool Registry", () => {
  it("should return all tools", () => {
    const tools = getAllTools();
    expect(tools.length).toBeGreaterThan(0);
    expect(tools.every((t) => t.id && t.name && t.category)).toBe(true);
  });

  it("should have required fields for each tool", () => {
    const tools = getAllTools();
    for (const tool of tools) {
      expect(tool.id).toBeTruthy();
      expect(tool.name).toBeTruthy();
      expect(tool.description).toBeTruthy();
      expect(tool.category).toBeTruthy();
      expect(typeof tool.dangerous).toBe("boolean");
      expect(typeof tool.parameters).toBe("object");
    }
  });

  it("should find tool by ID", () => {
    const tool = getToolById("http_get");
    expect(tool).toBeDefined();
    expect(tool?.name).toBe("HTTP GET");
    expect(tool?.category).toBe("http");
  });

  it("should return undefined for unknown tool ID", () => {
    const tool = getToolById("nonexistent_tool");
    expect(tool).toBeUndefined();
  });

  it("should have http tools", () => {
    const httpTools = TOOL_REGISTRY.filter((t) => t.category === "http");
    expect(httpTools.length).toBeGreaterThanOrEqual(2);
  });

  it("should have shell tools", () => {
    const shellTools = TOOL_REGISTRY.filter((t) => t.category === "shell");
    expect(shellTools.length).toBeGreaterThanOrEqual(1);
  });

  it("should have docker tools", () => {
    const dockerTools = TOOL_REGISTRY.filter((t) => t.category === "docker");
    expect(dockerTools.length).toBeGreaterThanOrEqual(2);
  });

  it("should mark dangerous tools correctly", () => {
    const shellExec = getToolById("shell_exec");
    expect(shellExec?.dangerous).toBe(true);

    const httpGet = getToolById("http_get");
    expect(httpGet?.dangerous).toBe(false);
  });
});

describe("Tool Execution", () => {
  beforeEach(() => {
    vi.clearAllMocks();
    (getAgentById as any).mockResolvedValue(mockAgent);
    (getAgentAccessControl as any).mockResolvedValue([]);
  });

  it("should return error for non-existent agent", async () => {
    (getAgentById as any).mockResolvedValue(null);
    const result = await executeTool(999, "http_get", { url: "https://example.com" });
    expect(result.success).toBe(false);
    expect(result.error).toContain("Agent not found");
  });

  it("should return error for unknown tool", async () => {
    const result = await executeTool(1, "nonexistent_tool", {});
    expect(result.success).toBe(false);
    expect(result.error).toContain("Unknown tool");
  });

  it("should block tool not in agent's allowed list", async () => {
    const agentWithLimitedTools = { ...mockAgent, allowedTools: ["http_get"] };
    (getAgentById as any).mockResolvedValue(agentWithLimitedTools);

    const result = await executeTool(1, "shell_exec", { command: "echo hello" });
    expect(result.success).toBe(false);
    expect(result.error).toContain("not in agent's allowed tools list");
  });

  it("should block tool explicitly denied in access control", async () => {
    (getAgentAccessControl as any).mockResolvedValue([
      { tool: "http_get", isAllowed: false },
    ]);
    const agentWithAllTools = { ...mockAgent, allowedTools: [] };
    (getAgentById as any).mockResolvedValue(agentWithAllTools);

    const result = await executeTool(1, "http_get", { url: "https://example.com" });
    expect(result.success).toBe(false);
    expect(result.error).toContain("blocked");
  });

  it("should include executionTimeMs in result", async () => {
    // Agent with no allowed tools (empty = all allowed)
    const agentAllTools = { ...mockAgent, allowedTools: [] };
    (getAgentById as any).mockResolvedValue(agentAllTools);

    // This will fail (no actual HTTP), but should still return executionTimeMs
    const result = await executeTool(1, "http_get", { url: "https://httpbin.org/get" });
    expect(typeof result.executionTimeMs).toBe("number");
    expect(result.executionTimeMs).toBeGreaterThanOrEqual(0);
  });
});