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

const mocks = vi.hoisted(() => ({
  withWritableSource: vi.fn(),
  createTask: vi.fn(),
  linkEntities: vi.fn(),
  auditTask: vi.fn(),
  logActivity: vi.fn(),
  writeSystemMessage: vi.fn(),
  publishWakeup: vi.fn(),
  hasTasksModule: vi.fn(),
}));

vi.mock("@hivegrid/chat/repository.server", () => ({
  withWritableChatMessageTaskSource: (...args: unknown[]) => mocks.withWritableSource(...args),
}));
vi.mock("@hivegrid/chat/system-message.server", () => ({
  writeChatSystemMessageWithTx: (...args: unknown[]) => mocks.writeSystemMessage(...args),
}));
vi.mock("@hivegrid/chat/realtime-wakeup.server", () => ({
  publishChatPersistentRealtimeWakeup: (...args: unknown[]) => mocks.publishWakeup(...args),
}));
vi.mock("@hivegrid/chat/module-access.server", () => ({
  tenantHasTasksModuleWithPermissionsTx: (...args: unknown[]) => mocks.hasTasksModule(...args),
}));
vi.mock("~/utils/integrations/taskService.server", () => ({
  createIdempotentTaskFromSourceWithTx: (...args: unknown[]) => mocks.createTask(...args),
}));
vi.mock("~/utils/integrations/entityLinkService.server", () => ({
  linkEntitiesWithTx: (...args: unknown[]) => mocks.linkEntities(...args),
}));
vi.mock("~/utils/integrations/taskAudit.server", () => ({
  auditTaskEvent: (...args: unknown[]) => mocks.auditTask(...args),
  logTaskActivity: (...args: unknown[]) => mocks.logActivity(...args),
}));

import { markChatMessageAsTask } from "./ChatMessageTaskService.server";

const tx = { transaction: "shared" };
const source = { chatId: "chat_1", messageId: "message_1", body: "Heizung prüfen\nDetails", projectId: "project_1" };
const currentPermissions = ["chat.read_own_channels", "chat.write", "tasks.read_own", "tasks.write"];
const chatContext = {
  tenantId: "tenant_1",
  userId: "user_1",
  tenantUserId: "tenant_user_1",
  permissions: currentPermissions,
  hasModule: true as const,
};
const taskContext = { tenantId: "tenant_1", userId: "user_1", permissions: ["tasks.write"], hasModule: true };
const input = {
  chatContext,
  taskContext,
  chatId: "chat_1",
  messageId: "message_1",
  requestId: "request_1",
  tenantSlug: "demo",
  fallbackTitle: "Aufgabe aus Chat",
};

describe("markChatMessageAsTask", () => {
  beforeEach(() => {
    vi.clearAllMocks();
    mocks.withWritableSource.mockImplementation(async (_input: unknown, operation: (...args: unknown[]) => unknown) =>
      operation(tx, source, currentPermissions)
    );
    mocks.createTask.mockResolvedValue({
      replayed: false,
      task: { id: "task_1", linkedEntityType: "project", linkedEntityId: "project_1" },
    });
    mocks.linkEntities.mockResolvedValue(undefined);
    mocks.auditTask.mockResolvedValue(undefined);
    mocks.logActivity.mockResolvedValue(undefined);
    mocks.writeSystemMessage.mockResolvedValue({ replayed: false, event: { event: "chat.message.created" } });
    mocks.publishWakeup.mockResolvedValue(undefined);
    mocks.hasTasksModule.mockResolvedValue(true);
  });

  it("writes task, backlink, strict effects and system link in one chat-authorized transaction", async () => {
    await expect(markChatMessageAsTask(input)).resolves.toEqual({ taskId: "task_1", replayed: false });

    expect(mocks.withWritableSource).toHaveBeenCalledWith(
      expect.objectContaining({ tenantId: "tenant_1", userId: "user_1", chatId: "chat_1", messageId: "message_1" }),
      expect.any(Function)
    );
    expect(mocks.createTask).toHaveBeenCalledWith(
      tx,
      expect.objectContaining({
        tenantId: "tenant_1",
        title: "Heizung prüfen",
        description: "Heizung prüfen\nDetails",
        linkedEntityType: "project",
        linkedEntityId: "project_1",
        source: "chat",
        sourceRef: "chat-message:message_1",
        ctx: expect.objectContaining({ permissions: currentPermissions }),
      })
    );
    expect(mocks.linkEntities).toHaveBeenCalledWith(tx, {
      tenantId: "tenant_1",
      userId: "user_1",
      sourceType: "chat_message",
      sourceId: "message_1",
      targetType: "task",
      targetId: "task_1",
      linkRole: "created-from",
    });
    expect(mocks.auditTask).toHaveBeenCalledWith(expect.objectContaining({ action: "task.created", taskId: "task_1" }), { client: tx, strict: true });
    expect(mocks.logActivity).toHaveBeenCalledWith(expect.objectContaining({ taskId: "task_1", activityType: "task_created", summaryText: "Heizung prüfen" }), {
      client: tx,
      strict: true,
    });
    expect(mocks.writeSystemMessage).toHaveBeenCalledWith(
      tx,
      expect.objectContaining({
        systemEventKey: "task-created:message_1",
        kind: "task_created",
        metadata: expect.objectContaining({ taskId: "task_1", taskHref: "/demo/tasks/task_1" }),
      })
    );
    expect(mocks.publishWakeup).toHaveBeenCalledOnce();
  });

  it("repairs the backlink and system reply on replay without duplicating audit or activity", async () => {
    mocks.createTask.mockResolvedValue({ replayed: true, task: { id: "task_1", linkedEntityType: null, linkedEntityId: null } });
    mocks.writeSystemMessage.mockResolvedValue({ replayed: true, event: { event: "chat.message.created" } });

    await expect(markChatMessageAsTask(input)).resolves.toEqual({ taskId: "task_1", replayed: true });

    expect(mocks.linkEntities).toHaveBeenCalledOnce();
    expect(mocks.auditTask).not.toHaveBeenCalled();
    expect(mocks.logActivity).not.toHaveBeenCalled();
    expect(mocks.writeSystemMessage).toHaveBeenCalledOnce();
    expect(mocks.publishWakeup).not.toHaveBeenCalled();
  });

  it("fails closed when tasks.write was revoked after the route context was loaded", async () => {
    mocks.withWritableSource.mockImplementation(async (_input: unknown, operation: (...args: unknown[]) => unknown) =>
      operation(tx, source, ["chat.read_own_channels", "chat.write"])
    );

    await expect(markChatMessageAsTask(input)).rejects.toMatchObject({ status: 404 });
    expect(mocks.createTask).not.toHaveBeenCalled();
  });

  it("fails closed when the Tasks module was disabled after the route context was loaded", async () => {
    mocks.hasTasksModule.mockResolvedValue(false);

    await expect(markChatMessageAsTask(input)).rejects.toMatchObject({ status: 404 });

    expect(mocks.hasTasksModule).toHaveBeenCalledWith(tx, "tenant_1", currentPermissions);
    expect(mocks.createTask).not.toHaveBeenCalled();
  });
});