import { describe, expect, it, vi } from 'vitest';
import { createCodingWorkspaceStore } from '@/stores/coding-workspace';
import type {
  CodingConversationMetadata,
  CodingProjectAgent,
  CodingProjectConfig,
  CodingProjectSummary,
} from '@/types/coding-project';

const project: CodingProjectSummary = {
  id: 'project-1',
  name: 'Local project',
  createdAt: '2026-08-23T00:00:00.000Z',
  updatedAt: '2026-08-23T00:00:00.000Z',
  lastOpenedAt: '2026-08-23T00:00:00.000Z',
};

function agent(id: string, overrides: Partial<CodingProjectAgent> = {}): CodingProjectAgent {
  return {
    id,
    avatarId: 'default',
    roleName: '伙伴',
    name: id,
    builtIn: false,
    enabled: true,
    skillIds: [],
    responsibility: {
      mission: '协助当前项目',
      owns: [],
      boundaries: [],
      collaborators: [],
      principles: [],
    },
    prompt: '',
    archivedAt: null,
    pinned: false,
    createdAt: '2026-08-23T00:00:00.000Z',
    updatedAt: '2026-08-23T00:00:00.000Z',
    model: null,
    modelResolution: 'default',
    ...overrides,
  };
}

function config(agents: CodingProjectAgent[]): CodingProjectConfig {
  return {
    schemaVersion: 2,
    projectType: 'custom',
    initialized: true,
    agents,
    knowledgeDirectory: 'knowledge',
    createdAt: '2026-08-23T00:00:00.000Z',
    updatedAt: '2026-08-23T00:00:00.000Z',
  };
}

function conversation(id: string, agentId: string): CodingConversationMetadata {
  return {
    id,
    agentId,
    title: '新对话',
    archivedAt: null,
    unread: false,
    createdAt: '2026-08-23T00:00:00.000Z',
    updatedAt: '2026-08-23T00:00:00.000Z',
    model: null,
    modelResolution: 'default',
  };
}

function deferred<T>() {
  let resolve!: (value: T) => void;
  let reject!: (reason?: unknown) => void;
  const promise = new Promise<T>((resolvePromise, rejectPromise) => {
    resolve = resolvePromise;
    reject = rejectPromise;
  });
  return { promise, resolve, reject };
}

describe('coding workspace store', () => {
  it('loads local project metadata and selects the pinned Agent without touching runtime APIs', async () => {
    const listProjects = vi.fn(async () => ({ projects: [project], activeProjectId: project.id }));
    const getConfig = vi.fn(async () => ({
      project,
      config: config([agent('agent-a'), agent('agent-b', { pinned: true })]),
    }));
    const listConversations = vi.fn(async () => [conversation('conversation-b', 'agent-b')]);
    const createConversation = vi.fn();
    const store = createCodingWorkspaceStore({
      listProjects,
      getConfig,
      listConversations,
      createConversation,
    });

    await store.getState().load();

    expect(store.getState()).toMatchObject({
      activeProjectId: 'project-1',
      selectedAgentId: 'agent-b',
      loadState: 'ready',
      conversations: [{ id: 'conversation-b' }],
    });
    expect(createConversation).not.toHaveBeenCalled();
  });

  it('passes the explicit identity choice through project creation', async () => {
    const createProject = vi.fn(async () => ({
      project,
      config: config([agent('agent-a')]),
      knowledgeFiles: [],
    }));
    const store = createCodingWorkspaceStore({
      listProjects: vi.fn(async () => ({ projects: [project], activeProjectId: project.id })),
      getConfig: vi.fn(async () => ({ project, config: config([agent('agent-a')]) })),
      listConversations: vi.fn(async () => []),
      createProject,
    });

    await expect(store.getState().createProject({
      projectPath: 'C:/projects/new',
      projectType: 'custom',
      identity: { kind: 'bind', projectId: 'aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa' },
    })).resolves.toEqual(project);
    expect(createProject).toHaveBeenCalledWith({
      projectPath: 'C:/projects/new',
      projectType: 'custom',
      identity: { kind: 'bind', projectId: 'aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa' },
    });
  });

  it('creates a missing first Conversation once for concurrent callers', async () => {
    let resolveCreate!: (value: CodingConversationMetadata) => void;
    const createFlight = new Promise<CodingConversationMetadata>((resolve) => {
      resolveCreate = resolve;
    });
    const createConversation = vi.fn(() => createFlight);
    const store = createCodingWorkspaceStore({
      listProjects: vi.fn(async () => ({ projects: [project], activeProjectId: project.id })),
      getConfig: vi.fn(async () => ({ project, config: config([agent('agent-a')]) })),
      listConversations: vi.fn(async () => []),
      createConversation,
    });
    await store.getState().load();

    const first = store.getState().ensureConversation('agent-a');
    const second = store.getState().ensureConversation('agent-a');
    expect(createConversation).toHaveBeenCalledTimes(1);
    expect(store.getState().creatingAgentIds).toEqual({ 'agent-a': true });

    const created = conversation('conversation-a', 'agent-a');
    resolveCreate(created);
    await expect(Promise.all([first, second])).resolves.toEqual([created, created]);
    expect(store.getState().conversations).toEqual([created]);
    expect(store.getState().creatingAgentIds).toEqual({});
  });

  it('keeps title, archive, and unread metadata scoped to the patched Conversation', async () => {
    const first = conversation('conversation-a', 'agent-a');
    const second = conversation('conversation-b', 'agent-a');
    const patchConversation = vi.fn(async (_id: string, patch: { title?: string; archived?: boolean; unread?: boolean }) => ({
      ...first,
      ...(patch.title ? { title: patch.title } : {}),
      ...(patch.archived ? { archivedAt: '2026-08-24T01:00:00.000Z' } : {}),
      ...(patch.unread !== undefined ? { unread: patch.unread } : {}),
    }));
    const store = createCodingWorkspaceStore({
      listProjects: vi.fn(async () => ({ projects: [project], activeProjectId: project.id })),
      getConfig: vi.fn(async () => ({ project, config: config([agent('agent-a')]) })),
      listConversations: vi.fn(async () => [first, second]),
      createConversation: vi.fn(),
      patchConversation,
    });
    await store.getState().load();

    await store.getState().patchConversation(first.id, {
      title: 'Feature UI',
      archived: true,
      unread: true,
    });

    expect(patchConversation).toHaveBeenCalledWith(first.id, {
      title: 'Feature UI',
      archived: true,
      unread: true,
    });
    expect(store.getState().conversations).toEqual([
      expect.objectContaining({ id: first.id, title: 'Feature UI', unread: true, archivedAt: expect.any(String) }),
      second,
    ]);
  });

  it('does not write an old project metadata result into the newly active project', async () => {
    const secondProject = { ...project, id: 'project-2', name: 'Second project' };
    const firstConversation = conversation('conversation-a', 'agent-a');
    const secondConversation = conversation('conversation-b', 'agent-b');
    const patchFlight = deferred<CodingConversationMetadata>();
    let activeProject = project;
    const store = createCodingWorkspaceStore({
      listProjects: vi.fn(async () => ({
        projects: [project, secondProject],
        activeProjectId: activeProject.id,
      })),
      getConfig: vi.fn(async (projectId: string) => (
        projectId === project.id
          ? { project, config: config([agent('agent-a')]) }
          : { project: secondProject, config: config([agent('agent-b')]) }
      )),
      listConversations: vi.fn(async (projectId: string) => (
        projectId === project.id ? [firstConversation] : [secondConversation]
      )),
      createConversation: vi.fn(),
      patchConversation: vi.fn(() => patchFlight.promise),
    });
    await store.getState().load();

    const pendingPatch = store.getState().patchConversation(firstConversation.id, { title: 'Old project title' });
    activeProject = secondProject;
    await store.getState().load();
    patchFlight.resolve({ ...firstConversation, title: 'Old project title' });
    await pendingPatch;

    expect(store.getState()).toMatchObject({
      activeProjectId: secondProject.id,
      conversations: [secondConversation],
    });
  });

  it('keeps a metadata rejection on its source project and Conversation', async () => {
    const secondProject = { ...project, id: 'project-2', name: 'Second project' };
    const firstConversation = conversation('conversation-a', 'agent-a');
    const secondConversation = conversation('conversation-b', 'agent-b');
    const patchFlight = deferred<CodingConversationMetadata>();
    let activeProject = project;
    const store = createCodingWorkspaceStore({
      listProjects: vi.fn(async () => ({
        projects: [project, secondProject],
        activeProjectId: activeProject.id,
      })),
      getConfig: vi.fn(async (projectId: string) => (
        projectId === project.id
          ? { project, config: config([agent('agent-a')]) }
          : { project: secondProject, config: config([agent('agent-b')]) }
      )),
      listConversations: vi.fn(async (projectId: string) => (
        projectId === project.id ? [firstConversation] : [secondConversation]
      )),
      createConversation: vi.fn(),
      patchConversation: vi.fn(() => patchFlight.promise),
    });
    await store.getState().load();

    const pendingPatch = store.getState().patchConversation(firstConversation.id, { title: 'Rejected title' });
    const rejection = expect(pendingPatch).rejects.toThrow('metadata rejected');
    activeProject = secondProject;
    await store.getState().load();
    patchFlight.reject(new Error('metadata rejected'));
    await rejection;

    expect(store.getState().error).toBeNull();
    expect(store.getState().conversationErrorsByProjectId).toEqual({
      [project.id]: { [firstConversation.id]: 'metadata rejected' },
    });
    expect(store.getState().conversationErrorsByProjectId[secondProject.id]).toBeUndefined();
  });
});