@firesystem/core/dist/index.js

Virtual File System core interfaces and types

// src/types/FileSystemEvents.ts
var FileSystemEvents = {
  // Initialization events
  INITIALIZING: "fs:initializing",
  INITIALIZED: "fs:initialized",
  INIT_PROGRESS: "fs:init:progress",
  INIT_ERROR: "fs:init:error",
  // Operation lifecycle events
  OPERATION_START: "fs:operation:start",
  OPERATION_END: "fs:operation:end",
  OPERATION_ERROR: "fs:operation:error",
  // File events (complement to watch)
  FILE_READING: "fs:file:reading",
  FILE_READ: "fs:file:read",
  FILE_WRITING: "fs:file:writing",
  FILE_WRITTEN: "fs:file:written",
  FILE_DELETING: "fs:file:deleting",
  FILE_DELETED: "fs:file:deleted",
  // Directory events
  DIR_READING: "fs:dir:reading",
  DIR_READ: "fs:dir:read",
  DIR_CREATING: "fs:dir:creating",
  DIR_CREATED: "fs:dir:created",
  DIR_DELETING: "fs:dir:deleting",
  DIR_DELETED: "fs:dir:deleted",
  // Batch operations
  BATCH_START: "fs:batch:start",
  BATCH_PROGRESS: "fs:batch:progress",
  BATCH_END: "fs:batch:end",
  // Storage events
  STORAGE_CLEARING: "fs:storage:clearing",
  STORAGE_CLEARED: "fs:storage:cleared",
  STORAGE_SIZE_CALCULATED: "fs:storage:size"
};

// src/utils/paths.ts
function normalizePath(path) {
  if (!path) return "/";
  if (!path.startsWith("/")) {
    path = "/" + path;
  }
  path = path.replace(/\/+/g, "/");
  if (path.length > 1 && path.endsWith("/")) {
    path = path.slice(0, -1);
  }
  return path;
}
function dirname(path) {
  const normalized = normalizePath(path);
  const lastSlash = normalized.lastIndexOf("/");
  return lastSlash === 0 ? "/" : normalized.slice(0, lastSlash);
}
function basename(path) {
  const normalized = normalizePath(path);
  const lastSlash = normalized.lastIndexOf("/");
  return normalized.slice(lastSlash + 1);
}
function join(...segments) {
  const joined = segments.join("/");
  return normalizePath(joined);
}
function isAbsolute(path) {
  return path.startsWith("/");
}
function extname(path) {
  const base = basename(path);
  const lastDot = base.lastIndexOf(".");
  return lastDot === -1 ? "" : base.slice(lastDot);
}

// src/utils/EventEmitter.ts
var EventEmitter = class {
  constructor() {
    this.events = /* @__PURE__ */ new Map();
  }
  on(event, handler) {
    if (!this.events.has(event)) {
      this.events.set(event, /* @__PURE__ */ new Set());
    }
    this.events.get(event).add(handler);
    return {
      dispose: () => this.off(event, handler)
    };
  }
  once(event, handler) {
    const wrappedHandler = (...args) => {
      handler(...args);
      this.off(event, wrappedHandler);
    };
    return this.on(event, wrappedHandler);
  }
  emit(event, ...args) {
    const handlers = this.events.get(event);
    if (!handlers || handlers.size === 0) {
      return false;
    }
    handlers.forEach((handler) => {
      try {
        handler(...args);
      } catch (error) {
        console.error(`Error in event handler for ${String(event)}:`, error);
      }
    });
    return true;
  }
  off(event, handler) {
    if (!handler) {
      this.events.delete(event);
      return;
    }
    const handlers = this.events.get(event);
    if (handlers) {
      handlers.delete(handler);
      if (handlers.size === 0) {
        this.events.delete(event);
      }
    }
  }
  removeAllListeners(event) {
    if (event) {
      this.events.delete(event);
    } else {
      this.events.clear();
    }
  }
};
var TypedEventEmitter = class {
  constructor() {
    this.emitter = new EventEmitter();
  }
  on(event, handler) {
    return this.emitter.on(event, handler);
  }
  once(event, handler) {
    return this.emitter.once(event, handler);
  }
  emit(event, payload) {
    return this.emitter.emit(event, payload);
  }
  off(event, handler) {
    this.emitter.off(event, handler);
  }
  removeAllListeners(event) {
    this.emitter.removeAllListeners(event);
  }
};

// src/mixins/withEvents.ts
function withEvents(Base) {
  return class extends Base {
    constructor() {
      super(...arguments);
      this.events = new TypedEventEmitter();
    }
    // Override methods to emit events
    async readFile(path) {
      const startTime = Date.now();
      const operationId = `read-${path}-${startTime}`;
      this.events.emit(FileSystemEvents.OPERATION_START, {
        operation: "readFile",
        path,
        id: operationId
      });
      this.events.emit(FileSystemEvents.FILE_READING, { path });
      try {
        const result = await super.readFile(path);
        this.events.emit(FileSystemEvents.FILE_READ, {
          path,
          size: result.size || 0
        });
        this.events.emit(FileSystemEvents.OPERATION_END, {
          operation: "readFile",
          path,
          id: operationId,
          duration: Date.now() - startTime
        });
        return result;
      } catch (error) {
        this.events.emit(FileSystemEvents.OPERATION_ERROR, {
          operation: "readFile",
          path,
          error
        });
        throw error;
      }
    }
    async writeFile(path, content, metadata) {
      const startTime = Date.now();
      const operationId = `write-${path}-${startTime}`;
      const size = typeof content === "string" ? content.length : JSON.stringify(content).length;
      this.events.emit(FileSystemEvents.OPERATION_START, {
        operation: "writeFile",
        path,
        id: operationId
      });
      this.events.emit(FileSystemEvents.FILE_WRITING, { path, size });
      try {
        const result = await super.writeFile(path, content, metadata);
        this.events.emit(FileSystemEvents.FILE_WRITTEN, { path, size });
        this.events.emit(FileSystemEvents.OPERATION_END, {
          operation: "writeFile",
          path,
          id: operationId,
          duration: Date.now() - startTime
        });
        return result;
      } catch (error) {
        this.events.emit(FileSystemEvents.OPERATION_ERROR, {
          operation: "writeFile",
          path,
          error
        });
        throw error;
      }
    }
    async deleteFile(path) {
      const startTime = Date.now();
      const operationId = `delete-${path}-${startTime}`;
      this.events.emit(FileSystemEvents.OPERATION_START, {
        operation: "deleteFile",
        path,
        id: operationId
      });
      this.events.emit(FileSystemEvents.FILE_DELETING, { path });
      try {
        await super.deleteFile(path);
        this.events.emit(FileSystemEvents.FILE_DELETED, { path });
        this.events.emit(FileSystemEvents.OPERATION_END, {
          operation: "deleteFile",
          path,
          id: operationId,
          duration: Date.now() - startTime
        });
      } catch (error) {
        this.events.emit(FileSystemEvents.OPERATION_ERROR, {
          operation: "deleteFile",
          path,
          error
        });
        throw error;
      }
    }
    async readDir(path) {
      const startTime = Date.now();
      const operationId = `readDir-${path}-${startTime}`;
      this.events.emit(FileSystemEvents.OPERATION_START, {
        operation: "readDir",
        path,
        id: operationId
      });
      this.events.emit(FileSystemEvents.DIR_READING, { path });
      try {
        const result = await super.readDir(path);
        this.events.emit(FileSystemEvents.DIR_READ, {
          path,
          count: result.length
        });
        this.events.emit(FileSystemEvents.OPERATION_END, {
          operation: "readDir",
          path,
          id: operationId,
          duration: Date.now() - startTime
        });
        return result;
      } catch (error) {
        this.events.emit(FileSystemEvents.OPERATION_ERROR, {
          operation: "readDir",
          path,
          error
        });
        throw error;
      }
    }
    async mkdir(path, recursive = false) {
      const startTime = Date.now();
      const operationId = `mkdir-${path}-${startTime}`;
      this.events.emit(FileSystemEvents.OPERATION_START, {
        operation: "mkdir",
        path,
        id: operationId
      });
      this.events.emit(FileSystemEvents.DIR_CREATING, { path, recursive });
      try {
        const result = await super.mkdir(path, recursive);
        this.events.emit(FileSystemEvents.DIR_CREATED, { path });
        this.events.emit(FileSystemEvents.OPERATION_END, {
          operation: "mkdir",
          path,
          id: operationId,
          duration: Date.now() - startTime
        });
        return result;
      } catch (error) {
        this.events.emit(FileSystemEvents.OPERATION_ERROR, {
          operation: "mkdir",
          path,
          error
        });
        throw error;
      }
    }
    async rmdir(path, recursive = false) {
      const startTime = Date.now();
      const operationId = `rmdir-${path}-${startTime}`;
      this.events.emit(FileSystemEvents.OPERATION_START, {
        operation: "rmdir",
        path,
        id: operationId
      });
      this.events.emit(FileSystemEvents.DIR_DELETING, { path, recursive });
      try {
        await super.rmdir(path, recursive);
        this.events.emit(FileSystemEvents.DIR_DELETED, { path });
        this.events.emit(FileSystemEvents.OPERATION_END, {
          operation: "rmdir",
          path,
          id: operationId,
          duration: Date.now() - startTime
        });
      } catch (error) {
        this.events.emit(FileSystemEvents.OPERATION_ERROR, {
          operation: "rmdir",
          path,
          error
        });
        throw error;
      }
    }
    async clear() {
      const startTime = Date.now();
      const operationId = `clear-${startTime}`;
      this.events.emit(FileSystemEvents.OPERATION_START, {
        operation: "clear",
        id: operationId
      });
      this.events.emit(FileSystemEvents.STORAGE_CLEARING, void 0);
      try {
        await super.clear();
        const duration = Date.now() - startTime;
        this.events.emit(FileSystemEvents.STORAGE_CLEARED, { duration });
        this.events.emit(FileSystemEvents.OPERATION_END, {
          operation: "clear",
          id: operationId,
          duration
        });
      } catch (error) {
        this.events.emit(FileSystemEvents.OPERATION_ERROR, {
          operation: "clear",
          error
        });
        throw error;
      }
    }
    async size() {
      const startTime = Date.now();
      const operationId = `size-${startTime}`;
      this.events.emit(FileSystemEvents.OPERATION_START, {
        operation: "size",
        id: operationId
      });
      try {
        const size = await super.size();
        this.events.emit(FileSystemEvents.STORAGE_SIZE_CALCULATED, { size });
        this.events.emit(FileSystemEvents.OPERATION_END, {
          operation: "size",
          id: operationId,
          duration: Date.now() - startTime
        });
        return size;
      } catch (error) {
        this.events.emit(FileSystemEvents.OPERATION_ERROR, {
          operation: "size",
          error
        });
        throw error;
      }
    }
  };
}

// src/base/BaseFileSystem.ts
var BaseFileSystem = class {
  // Implementações padrão dos novos métodos
  /**
   * Por padrão, permite modificação se o arquivo existe ou se pode ser criado
   */
  async canModify(path) {
    try {
      const stat = await this.stat(path);
      return !stat.readonly;
    } catch {
      const parentPath = this.getParentPath(path);
      if (parentPath === "/") {
        return true;
      }
      return this.canCreateIn(parentPath);
    }
  }
  /**
   * Por padrão, permite criar se o diretório existe e não é readonly
   */
  async canCreateIn(parentPath) {
    try {
      const stat = await this.stat(parentPath);
      return stat.type === "directory" && !stat.readonly;
    } catch {
      return false;
    }
  }
  /**
   * Implementação padrão de escrita atômica usando temp + rename
   */
  async writeFileAtomic(path, content, metadata) {
    const normalizedPath = normalizePath(path);
    const tempPath = `${normalizedPath}.tmp${Date.now()}`;
    try {
      await this.writeFile(tempPath, content, metadata);
      if (await this.exists(normalizedPath)) {
        await this.deleteFile(normalizedPath);
      }
      return await this.rename(tempPath, normalizedPath);
    } catch (error) {
      try {
        await this.deleteFile(tempPath);
      } catch {
      }
      throw error;
    }
  }
  /**
   * Helper para extrair diretório pai
   */
  getParentPath(path) {
    const normalized = normalizePath(path);
    const lastSlash = normalized.lastIndexOf("/");
    return lastSlash <= 0 ? "/" : normalized.substring(0, lastSlash);
  }
};
export {
  BaseFileSystem,
  EventEmitter,
  FileSystemEvents,
  TypedEventEmitter,
  basename,
  dirname,
  extname,
  isAbsolute,
  join,
  normalizePath,
  withEvents
};
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