import {
  errIsoConnect, errIsoDisconnect, errIsoInvalidPDU, errIsoInvalidDataSize,
  errIsoNullPointer, errIsoShortPacket, errIsoTooManyFragments, errIsoPduOverflow,
  errIsoSendPacket, errIsoRecvPacket, errIsoInvalidParams,
  errNegotiatingPDU, errCliInvalidParams, errCliJobPending, errCliTooManyItems,
  errCliInvalidWordLen, errCliPartialDataWritten, errCliSizeOverPDU,
  errCliInvalidPlcAnswer, errCliAddressOutOfRange, errCliInvalidTransportSize,
  errCliWriteDataSizeMismatch, errCliItemNotAvailable, errCliInvalidValue,
  errCliCannotStartPLC, errCliAlreadyRun, errCliCannotStopPLC,
  errCliCannotCopyRamToRom, errCliCannotCompress, errCliAlreadyStop,
  errCliFunNotAvailable, errCliUploadSequenceFailed, errCliInvalidDataSizeRecvd,
  errCliInvalidBlockType, errCliInvalidBlockNumber, errCliInvalidBlockSize,
  errCliDownloadSequenceFailed, errCliInsertRefused, errCliDeleteRefused,
  errCliNeedPassword, errCliInvalidPassword, errCliNoPasswordToSetOrClear,
  errCliJobTimeout, errCliPartialDataRead, errCliBufferTooSmall,
  errCliFunctionRefused, errCliDestroying, errCliInvalidParamNumber,
  errCliCannotChangeParam,
  errSrvCannotStart, errSrvDBNullPointer, errSrvAreaAlreadyExists,
  errSrvUnknownArea, errSrvInvalidParams, errSrvTooManyDB,
  errSrvInvalidParamNumber, errSrvCannotChangeParam,
} from '../protocol/constants.js';

const isoErrors = new Map<number, string>([
  [errIsoConnect, 'ISO connection error'],
  [errIsoDisconnect, 'ISO disconnect error'],
  [errIsoInvalidPDU, 'Invalid PDU received'],
  [errIsoInvalidDataSize, 'Invalid data size'],
  [errIsoNullPointer, 'Null pointer'],
  [errIsoShortPacket, 'Short packet received'],
  [errIsoTooManyFragments, 'Too many fragments'],
  [errIsoPduOverflow, 'PDU overflow'],
  [errIsoSendPacket, 'Send packet error'],
  [errIsoRecvPacket, 'Recv packet error'],
  [errIsoInvalidParams, 'Invalid TSAP params'],
]);

const cliErrors = new Map<number, string>([
  [errNegotiatingPDU, 'PDU negotiation error'],
  [errCliInvalidParams, 'Invalid parameters'],
  [errCliJobPending, 'Job pending'],
  [errCliTooManyItems, 'Too many items'],
  [errCliInvalidWordLen, 'Invalid word length'],
  [errCliPartialDataWritten, 'Partial data written'],
  [errCliSizeOverPDU, 'Size over PDU'],
  [errCliInvalidPlcAnswer, 'Invalid PLC answer'],
  [errCliAddressOutOfRange, 'Address out of range'],
  [errCliInvalidTransportSize, 'Invalid transport size'],
  [errCliWriteDataSizeMismatch, 'Write data size mismatch'],
  [errCliItemNotAvailable, 'Item not available'],
  [errCliInvalidValue, 'Invalid value'],
  [errCliCannotStartPLC, 'Cannot start PLC'],
  [errCliAlreadyRun, 'PLC already running'],
  [errCliCannotStopPLC, 'Cannot stop PLC'],
  [errCliCannotCopyRamToRom, 'Cannot copy RAM to ROM'],
  [errCliCannotCompress, 'Cannot compress'],
  [errCliAlreadyStop, 'PLC already stopped'],
  [errCliFunNotAvailable, 'Function not available'],
  [errCliUploadSequenceFailed, 'Upload sequence failed'],
  [errCliInvalidDataSizeRecvd, 'Invalid data size received'],
  [errCliInvalidBlockType, 'Invalid block type'],
  [errCliInvalidBlockNumber, 'Invalid block number'],
  [errCliInvalidBlockSize, 'Invalid block size'],
  [errCliDownloadSequenceFailed, 'Download sequence failed'],
  [errCliInsertRefused, 'Insert refused'],
  [errCliDeleteRefused, 'Delete refused'],
  [errCliNeedPassword, 'Password required'],
  [errCliInvalidPassword, 'Invalid password'],
  [errCliNoPasswordToSetOrClear, 'No password to set or clear'],
  [errCliJobTimeout, 'Job timeout'],
  [errCliPartialDataRead, 'Partial data read'],
  [errCliBufferTooSmall, 'Buffer too small'],
  [errCliFunctionRefused, 'Function refused'],
  [errCliDestroying, 'Client destroying'],
  [errCliInvalidParamNumber, 'Invalid parameter number'],
  [errCliCannotChangeParam, 'Cannot change parameter'],
]);

const srvErrors = new Map<number, string>([
  [errSrvCannotStart, 'Server cannot start'],
  [errSrvDBNullPointer, 'DB null pointer'],
  [errSrvAreaAlreadyExists, 'Area already exists'],
  [errSrvUnknownArea, 'Unknown area'],
  [errSrvInvalidParams, 'Invalid parameters'],
  [errSrvTooManyDB, 'Too many DB'],
  [errSrvInvalidParamNumber, 'Invalid parameter number'],
  [errSrvCannotChangeParam, 'Cannot change parameter'],
]);

export function cliErrorText(error: number): string {
  if (error === 0) return 'No error';
  return isoErrors.get(error) ?? cliErrors.get(error) ?? `Unknown error: 0x${error.toString(16).toUpperCase()}`;
}

export function srvErrorText(error: number): string {
  if (error === 0) return 'No error';
  return isoErrors.get(error) ?? srvErrors.get(error) ?? `Unknown error: 0x${error.toString(16).toUpperCase()}`;
}

export function srvEventText(event: { EvtCode: number; EvtRetCode: number; EvtParam1: number; EvtParam2: number }): string {
  const parts: string[] = [];
  const evtCode = event.EvtCode;
  const retCode = event.EvtRetCode;
  const p1 = event.EvtParam1;
  const p2 = event.EvtParam2;

  // Event code description
  const evtNames = new Map<number, string>([
    [0x00000001, 'Server started'],
    [0x00000002, 'Server stopped'],
    [0x00000004, 'Listener cannot start'],
    [0x00000008, 'Client added'],
    [0x00000010, 'Client rejected'],
    [0x00000020, 'Client no room'],
    [0x00000040, 'Client exception'],
    [0x00000080, 'Client disconnected'],
    [0x00000100, 'Client terminated'],
    [0x00000200, 'Clients dropped'],
    [0x00010000, 'PDU incoming'],
    [0x00020000, 'Data read'],
    [0x00040000, 'Data write'],
    [0x00080000, 'Negotiate PDU'],
    [0x00100000, 'Read SZL'],
    [0x00200000, 'Clock'],
    [0x00400000, 'Upload'],
    [0x00800000, 'Download'],
    [0x01000000, 'Directory'],
    [0x02000000, 'Security'],
    [0x04000000, 'Control'],
  ]);

  const name = evtNames.get(evtCode) ?? `Event 0x${evtCode.toString(16).toUpperCase()}`;
  parts.push(name);

  if (retCode !== 0) {
    parts.push(`Result: 0x${retCode.toString(16).toUpperCase()}`);
  }
  if (p1 !== 0) {
    parts.push(`P1: ${p1}`);
  }
  if (p2 !== 0) {
    parts.push(`P2: ${p2}`);
  }

  return parts.join(', ');
}