/**
 * Base error class for all SmartDB errors
 * Mirrors MongoDB driver error hierarchy
 */
export class SmartdbError extends Error {
  public code?: number;
  public codeName?: string;

  constructor(message: string, code?: number, codeName?: string) {
    super(message);
    this.name = 'SmartdbError';
    this.code = code;
    this.codeName = codeName;
    Object.setPrototypeOf(this, new.target.prototype);
  }
}

/**
 * Error thrown during connection issues
 */
export class SmartdbConnectionError extends SmartdbError {
  constructor(message: string) {
    super(message);
    this.name = 'SmartdbConnectionError';
  }
}

/**
 * Error thrown when an operation times out
 */
export class SmartdbTimeoutError extends SmartdbError {
  constructor(message: string) {
    super(message, 50, 'MaxTimeMSExpired');
    this.name = 'SmartdbTimeoutError';
  }
}

/**
 * Error thrown during write operations
 */
export class SmartdbWriteError extends SmartdbError {
  public writeErrors?: IWriteError[];
  public result?: any;

  constructor(message: string, code?: number, writeErrors?: IWriteError[]) {
    super(message, code);
    this.name = 'SmartdbWriteError';
    this.writeErrors = writeErrors;
  }
}

/**
 * Error thrown for duplicate key violations
 */
export class SmartdbDuplicateKeyError extends SmartdbWriteError {
  public keyPattern?: Record<string, 1>;
  public keyValue?: Record<string, any>;

  constructor(message: string, keyPattern?: Record<string, 1>, keyValue?: Record<string, any>) {
    super(message, 11000);
    this.name = 'SmartdbDuplicateKeyError';
    this.codeName = 'DuplicateKey';
    this.keyPattern = keyPattern;
    this.keyValue = keyValue;
  }
}

/**
 * Error thrown for bulk write failures
 */
export class SmartdbBulkWriteError extends SmartdbError {
  public writeErrors: IWriteError[];
  public result: any;

  constructor(message: string, writeErrors: IWriteError[], result: any) {
    super(message, 65);
    this.name = 'SmartdbBulkWriteError';
    this.writeErrors = writeErrors;
    this.result = result;
  }
}

/**
 * Error thrown during transaction operations
 */
export class SmartdbTransactionError extends SmartdbError {
  constructor(message: string, code?: number) {
    super(message, code);
    this.name = 'SmartdbTransactionError';
  }
}

/**
 * Error thrown when a transaction is aborted due to conflict
 */
export class SmartdbWriteConflictError extends SmartdbTransactionError {
  constructor(message: string = 'Write conflict during transaction') {
    super(message, 112);
    this.name = 'SmartdbWriteConflictError';
    this.codeName = 'WriteConflict';
  }
}

/**
 * Error thrown for invalid arguments
 */
export class SmartdbArgumentError extends SmartdbError {
  constructor(message: string) {
    super(message);
    this.name = 'SmartdbArgumentError';
  }
}

/**
 * Error thrown when an operation is not supported
 */
export class SmartdbNotSupportedError extends SmartdbError {
  constructor(message: string) {
    super(message, 115);
    this.name = 'SmartdbNotSupportedError';
    this.codeName = 'CommandNotSupported';
  }
}

/**
 * Error thrown when cursor is exhausted or closed
 */
export class SmartdbCursorError extends SmartdbError {
  constructor(message: string) {
    super(message);
    this.name = 'SmartdbCursorError';
  }
}

/**
 * Error thrown when a namespace (database.collection) is invalid
 */
export class SmartdbNamespaceError extends SmartdbError {
  constructor(message: string) {
    super(message, 73);
    this.name = 'SmartdbNamespaceError';
    this.codeName = 'InvalidNamespace';
  }
}

/**
 * Error thrown when an index operation fails
 */
export class SmartdbIndexError extends SmartdbError {
  constructor(message: string, code?: number) {
    super(message, code || 86);
    this.name = 'SmartdbIndexError';
  }
}

/**
 * Write error detail for bulk operations
 */
export interface IWriteError {
  index: number;
  code: number;
  errmsg: string;
  op: any;
}

/**
 * Convert any error to a SmartdbError
 */
export function toSmartdbError(error: any): SmartdbError {
  if (error instanceof SmartdbError) {
    return error;
  }
  const smartdbError = new SmartdbError(error.message || String(error));
  if (error.code) {
    smartdbError.code = error.code;
  }
  if (error.codeName) {
    smartdbError.codeName = error.codeName;
  }
  return smartdbError;
}