import { describe, expect, it, vi, beforeEach } from "vitest";
import { BrainController } from "./brain.controller";
import { BrainService, BrainQueryResult, BrainContext } from "./brain.service";
import { TaskStatus, TaskPriority, ProjectStatus, EntityType } from "@prisma/client";

describe("BrainController", () => {
  let controller: BrainController;
  let mockService: {
    query: ReturnType<typeof vi.fn>;
    getContext: ReturnType<typeof vi.fn>;
    search: ReturnType<typeof vi.fn>;
  };

  const mockWorkspaceId = "123e4567-e89b-12d3-a456-426614174000";

  const mockQueryResult: BrainQueryResult = {
    tasks: [
      {
        id: "task-1",
        title: "Test Task",
        description: null,
        status: TaskStatus.IN_PROGRESS,
        priority: TaskPriority.HIGH,
        dueDate: null,
        assignee: null,
        project: null,
      },
    ],
    events: [
      {
        id: "event-1",
        title: "Test Event",
        description: null,
        startTime: new Date("2025-02-01T10:00:00Z"),
        endTime: new Date("2025-02-01T11:00:00Z"),
        allDay: false,
        location: null,
        project: null,
      },
    ],
    projects: [
      {
        id: "project-1",
        name: "Test Project",
        description: null,
        status: ProjectStatus.ACTIVE,
        startDate: null,
        endDate: null,
        color: null,
        _count: { tasks: 5, events: 2 },
      },
    ],
    meta: {
      totalTasks: 1,
      totalEvents: 1,
      totalProjects: 1,
      filters: {},
    },
  };

  const mockContext: BrainContext = {
    timestamp: new Date(),
    workspace: { id: mockWorkspaceId, name: "Test Workspace" },
    summary: {
      activeTasks: 10,
      overdueTasks: 2,
      upcomingEvents: 5,
      activeProjects: 3,
    },
    tasks: [
      {
        id: "task-1",
        title: "Test Task",
        status: TaskStatus.IN_PROGRESS,
        priority: TaskPriority.HIGH,
        dueDate: null,
        isOverdue: false,
      },
    ],
    events: [
      {
        id: "event-1",
        title: "Test Event",
        startTime: new Date("2025-02-01T10:00:00Z"),
        endTime: new Date("2025-02-01T11:00:00Z"),
        allDay: false,
        location: null,
      },
    ],
    projects: [
      {
        id: "project-1",
        name: "Test Project",
        status: ProjectStatus.ACTIVE,
        taskCount: 5,
      },
    ],
  };

  beforeEach(() => {
    mockService = {
      query: vi.fn().mockResolvedValue(mockQueryResult),
      getContext: vi.fn().mockResolvedValue(mockContext),
      search: vi.fn().mockResolvedValue(mockQueryResult),
    };

    controller = new BrainController(mockService as unknown as BrainService);
  });

  describe("query", () => {
    it("should call service.query with merged workspaceId", async () => {
      const queryDto = {
        workspaceId: "different-id",
        query: "What tasks are due?",
      };

      const result = await controller.query(queryDto, mockWorkspaceId);

      expect(mockService.query).toHaveBeenCalledWith({
        ...queryDto,
        workspaceId: mockWorkspaceId,
      });
      expect(result).toEqual(mockQueryResult);
    });

    it("should handle query with filters", async () => {
      const queryDto = {
        workspaceId: mockWorkspaceId,
        entities: [EntityType.TASK, EntityType.EVENT],
        tasks: { status: TaskStatus.IN_PROGRESS },
        events: { upcoming: true },
      };

      await controller.query(queryDto, mockWorkspaceId);

      expect(mockService.query).toHaveBeenCalledWith({
        ...queryDto,
        workspaceId: mockWorkspaceId,
      });
    });

    it("should handle query with search term", async () => {
      const queryDto = {
        workspaceId: mockWorkspaceId,
        search: "important",
        limit: 10,
      };

      await controller.query(queryDto, mockWorkspaceId);

      expect(mockService.query).toHaveBeenCalledWith({
        ...queryDto,
        workspaceId: mockWorkspaceId,
      });
    });

    it("should return query result structure", async () => {
      const result = await controller.query(
        { workspaceId: mockWorkspaceId },
        mockWorkspaceId
      );

      expect(result).toHaveProperty("tasks");
      expect(result).toHaveProperty("events");
      expect(result).toHaveProperty("projects");
      expect(result).toHaveProperty("meta");
      expect(result.tasks).toHaveLength(1);
      expect(result.events).toHaveLength(1);
      expect(result.projects).toHaveLength(1);
    });
  });

  describe("getContext", () => {
    it("should call service.getContext with merged workspaceId", async () => {
      const contextDto = {
        workspaceId: "different-id",
        includeTasks: true,
      };

      const result = await controller.getContext(contextDto, mockWorkspaceId);

      expect(mockService.getContext).toHaveBeenCalledWith({
        ...contextDto,
        workspaceId: mockWorkspaceId,
      });
      expect(result).toEqual(mockContext);
    });

    it("should handle context with all options", async () => {
      const contextDto = {
        workspaceId: mockWorkspaceId,
        includeTasks: true,
        includeEvents: true,
        includeProjects: true,
        eventDays: 14,
      };

      await controller.getContext(contextDto, mockWorkspaceId);

      expect(mockService.getContext).toHaveBeenCalledWith({
        ...contextDto,
        workspaceId: mockWorkspaceId,
      });
    });

    it("should return context structure", async () => {
      const result = await controller.getContext(
        { workspaceId: mockWorkspaceId },
        mockWorkspaceId
      );

      expect(result).toHaveProperty("timestamp");
      expect(result).toHaveProperty("workspace");
      expect(result).toHaveProperty("summary");
      expect(result.summary).toHaveProperty("activeTasks");
      expect(result.summary).toHaveProperty("overdueTasks");
      expect(result.summary).toHaveProperty("upcomingEvents");
      expect(result.summary).toHaveProperty("activeProjects");
    });

    it("should include detailed lists when requested", async () => {
      const result = await controller.getContext(
        {
          workspaceId: mockWorkspaceId,
          includeTasks: true,
          includeEvents: true,
          includeProjects: true,
        },
        mockWorkspaceId
      );

      expect(result.tasks).toBeDefined();
      expect(result.events).toBeDefined();
      expect(result.projects).toBeDefined();
    });
  });

  describe("search", () => {
    it("should call service.search with parameters", async () => {
      const result = await controller.search("test query", "10", mockWorkspaceId);

      expect(mockService.search).toHaveBeenCalledWith(mockWorkspaceId, "test query", 10);
      expect(result).toEqual(mockQueryResult);
    });

    it("should use default limit when not provided", async () => {
      await controller.search("test", undefined as unknown as string, mockWorkspaceId);

      expect(mockService.search).toHaveBeenCalledWith(mockWorkspaceId, "test", 20);
    });

    it("should cap limit at 100", async () => {
      await controller.search("test", "500", mockWorkspaceId);

      expect(mockService.search).toHaveBeenCalledWith(mockWorkspaceId, "test", 100);
    });

    it("should handle empty search term", async () => {
      await controller.search(undefined as unknown as string, "10", mockWorkspaceId);

      expect(mockService.search).toHaveBeenCalledWith(mockWorkspaceId, "", 10);
    });

    it("should handle invalid limit", async () => {
      await controller.search("test", "invalid", mockWorkspaceId);

      expect(mockService.search).toHaveBeenCalledWith(mockWorkspaceId, "test", 20);
    });

    it("should return search result structure", async () => {
      const result = await controller.search("test", "10", mockWorkspaceId);

      expect(result).toHaveProperty("tasks");
      expect(result).toHaveProperty("events");
      expect(result).toHaveProperty("projects");
      expect(result).toHaveProperty("meta");
    });
  });
});