/**
 * 项目管理器
 * 负责项目的创建和管理
 */

import * as storage from './storage/index.js';
import { getProjectId, isGitRepository } from './project.js';

/**
 * 项目元数据
 */
export interface ProjectMetadata {
  id: string;
  workdir: string;
  createdAt: string;
  isGitRepo: boolean;
}

/**
 * 项目管理器
 */
export class ProjectManager {
  private currentProject: ProjectMetadata | null = null;

  /**
   * 获取当前项目
   */
  getProject(): ProjectMetadata | null {
    return this.currentProject;
  }

  /**
   * 设置当前项目
   */
  setProject(project: ProjectMetadata | null): void {
    this.currentProject = project;
  }

  /**
   * 获取或创建项目
   */
  async getOrCreate(workdir: string): Promise<ProjectMetadata> {
    const projectId = await getProjectId(workdir);

    try {
      const existing = await storage.read<ProjectMetadata>(['project', projectId]);
      this.currentProject = existing;
      return existing;
    } catch (e) {
      if (e instanceof storage.StorageNotFoundError) {
        const isGitRepo = await isGitRepository(workdir);
        const project: ProjectMetadata = {
          id: projectId,
          workdir,
          createdAt: new Date().toISOString(),
          isGitRepo,
        };
        await storage.write(['project', projectId], project);
        this.currentProject = project;
        return project;
      }
      throw e;
    }
  }

  /**
   * 切换项目
   */
  async switchProject(workdir: string): Promise<ProjectMetadata> {
    return this.getOrCreate(workdir);
  }

  /**
   * 检查项目是否初始化
   */
  isInitialized(): boolean {
    return this.currentProject !== null;
  }

  /**
   * 获取项目 ID
   */
  getProjectId(): string | null {
    return this.currentProject?.id ?? null;
  }
}