/**
 * Tests for useActions hook.
 *
 * TDD: These tests define the expected behavior before implementation.
 */

import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
import { renderHook, act } from "@testing-library/react";
import { useActions } from "@/hooks/useActions";

// Mock Tauri shell plugin
const mockOpen = vi.fn();
vi.mock("@tauri-apps/plugin-shell", () => ({
  open: (...args: unknown[]) => mockOpen(...args),
}));

// Mock Tauri invoke
const mockInvoke = vi.fn();
vi.mock("@tauri-apps/api/core", () => ({
  invoke: (...args: unknown[]) => mockInvoke(...args),
}));

// Mock the focus store
const mockLogDecision = vi.fn();
const mockUpdateItem = vi.fn();
const mockAct = vi.fn();
vi.mock("@/stores/focus-store", () => ({
  useFocusStore: () => ({
    logDecision: mockLogDecision,
    updateItem: mockUpdateItem,
    act: mockAct,
  }),
}));

describe("useActions", () => {
  beforeEach(() => {
    vi.clearAllMocks();
    mockInvoke.mockResolvedValue(undefined);
    mockOpen.mockResolvedValue(undefined);
  });

  afterEach(() => {
    vi.useRealTimers();
  });

  describe("start", () => {
    it("opens URL in browser", async () => {
      const { result } = renderHook(() => useActions());

      await act(async () => {
        await result.current.start({
          id: "br-x7f",
          url: "https://gitlab.com/platform/core/-/merge_requests/847",
          title: "Test MR",
        });
      });

      expect(mockOpen).toHaveBeenCalledWith(
        "https://gitlab.com/platform/core/-/merge_requests/847"
      );
    });

    it("does not open URL if none provided", async () => {
      const { result } = renderHook(() => useActions());

      await act(async () => {
        await result.current.start({
          id: "br-x7f",
          title: "Manual task",
        });
      });

      expect(mockOpen).not.toHaveBeenCalled();
    });

    it("logs decision via Tauri", async () => {
      const { result } = renderHook(() => useActions());

      await act(async () => {
        await result.current.start({
          id: "br-x7f",
          title: "Test",
        });
      });

      expect(mockInvoke).toHaveBeenCalledWith(
        "log_decision",
        expect.objectContaining({
          entry: expect.objectContaining({
            action: "start",
            bead_id: "br-x7f",
          }),
        })
      );
    });
  });

  describe("defer", () => {
    it("calculates correct snooze time for 1h", async () => {
      vi.useFakeTimers();
      vi.setSystemTime(new Date("2026-02-25T10:00:00Z"));

      const { result } = renderHook(() => useActions());

      await act(async () => {
        await result.current.defer(
          { id: "br-x7f", title: "Test" },
          "1h",
          "Need more time"
        );
      });

      expect(mockInvoke).toHaveBeenCalledWith(
        "update_item",
        expect.objectContaining({
          id: "br-x7f",
          updates: expect.objectContaining({
            snoozed_until: "2026-02-25T11:00:00.000Z",
          }),
        })
      );
    });

    it("calculates correct snooze time for 3h", async () => {
      vi.useFakeTimers();
      vi.setSystemTime(new Date("2026-02-25T10:00:00Z"));

      const { result } = renderHook(() => useActions());

      await act(async () => {
        await result.current.defer(
          { id: "br-x7f", title: "Test" },
          "3h",
          null
        );
      });

      expect(mockInvoke).toHaveBeenCalledWith(
        "update_item",
        expect.objectContaining({
          id: "br-x7f",
          updates: expect.objectContaining({
            snoozed_until: "2026-02-25T13:00:00.000Z",
          }),
        })
      );
    });

    it("defer tomorrow uses 9am next day", async () => {
      vi.useFakeTimers();
      vi.setSystemTime(new Date("2026-02-25T22:00:00Z")); // 10pm

      const { result } = renderHook(() => useActions());

      await act(async () => {
        await result.current.defer(
          { id: "br-x7f", title: "Test" },
          "tomorrow",
          null
        );
      });

      // Should be 9am on Feb 26
      expect(mockInvoke).toHaveBeenCalledWith(
        "update_item",
        expect.objectContaining({
          id: "br-x7f",
          updates: expect.objectContaining({
            snoozed_until: expect.stringContaining("2026-02-26T09:00:00"),
          }),
        })
      );
    });

    it("logs decision with reason", async () => {
      vi.useFakeTimers();
      vi.setSystemTime(new Date("2026-02-25T10:00:00Z"));

      const { result } = renderHook(() => useActions());

      await act(async () => {
        await result.current.defer(
          { id: "br-x7f", title: "Test" },
          "1h",
          "In a meeting"
        );
      });

      expect(mockInvoke).toHaveBeenCalledWith(
        "log_decision",
        expect.objectContaining({
          entry: expect.objectContaining({
            action: "defer",
            bead_id: "br-x7f",
            reason: "In a meeting",
          }),
        })
      );
    });

    it("advances to next item in queue", async () => {
      vi.useFakeTimers();
      vi.setSystemTime(new Date("2026-02-25T10:00:00Z"));

      const { result } = renderHook(() => useActions());

      await act(async () => {
        await result.current.defer(
          { id: "br-x7f", title: "Test" },
          "1h",
          null
        );
      });

      expect(mockAct).toHaveBeenCalledWith("defer_1h", undefined);
    });
  });

  describe("skip", () => {
    it("marks item as skipped for today", async () => {
      const { result } = renderHook(() => useActions());

      await act(async () => {
        await result.current.skip(
          { id: "br-x7f", title: "Test" },
          "Not urgent"
        );
      });

      expect(mockInvoke).toHaveBeenCalledWith(
        "update_item",
        expect.objectContaining({
          id: "br-x7f",
          updates: expect.objectContaining({
            skipped_today: true,
          }),
        })
      );
    });

    it("logs decision with reason", async () => {
      const { result } = renderHook(() => useActions());

      await act(async () => {
        await result.current.skip(
          { id: "br-x7f", title: "Test" },
          "Low priority"
        );
      });

      expect(mockInvoke).toHaveBeenCalledWith(
        "log_decision",
        expect.objectContaining({
          entry: expect.objectContaining({
            action: "skip",
            bead_id: "br-x7f",
            reason: "Low priority",
          }),
        })
      );
    });

    it("advances to next item in queue", async () => {
      const { result } = renderHook(() => useActions());

      await act(async () => {
        await result.current.skip({ id: "br-x7f", title: "Test" }, null);
      });

      expect(mockAct).toHaveBeenCalledWith("skip", undefined);
    });
  });

  describe("complete", () => {
    it("closes bead via Tauri", async () => {
      const { result } = renderHook(() => useActions());

      await act(async () => {
        await result.current.complete(
          { id: "br-x7f", title: "Test" },
          "Fixed the bug"
        );
      });

      expect(mockInvoke).toHaveBeenCalledWith(
        "close_bead",
        expect.objectContaining({
          bead_id: "br-x7f",
          reason: "Fixed the bug",
        })
      );
    });

    it("logs decision", async () => {
      const { result } = renderHook(() => useActions());

      await act(async () => {
        await result.current.complete(
          { id: "br-x7f", title: "Test" },
          "Done"
        );
      });

      expect(mockInvoke).toHaveBeenCalledWith(
        "log_decision",
        expect.objectContaining({
          entry: expect.objectContaining({
            action: "complete",
            bead_id: "br-x7f",
            reason: "Done",
          }),
        })
      );
    });

    it("advances to next item in queue", async () => {
      const { result } = renderHook(() => useActions());

      await act(async () => {
        await result.current.complete(
          { id: "br-x7f", title: "Test" },
          null
        );
      });

      expect(mockAct).toHaveBeenCalled();
    });
  });
});