#pragma once

namespace nix {

#define WORKER_MAGIC_1 0x6e697863
#define WORKER_MAGIC_2 0x6478696f

#define PROTOCOL_VERSION 0x115
#define GET_PROTOCOL_MAJOR(x) ((x)&0xff00)
#define GET_PROTOCOL_MINOR(x) ((x)&0x00ff)

typedef enum {
  wopIsValidPath = 1,
  wopHasSubstitutes = 3,
  wopQueryPathHash = 4,    // obsolete
  wopQueryReferences = 5,  // obsolete
  wopQueryReferrers = 6,
  wopAddToStore = 7,
  wopAddTextToStore = 8,
  wopBuildPaths = 9,
  wopEnsurePath = 10,
  wopAddTempRoot = 11,
  wopAddIndirectRoot = 12,
  wopSyncWithGC = 13,
  wopFindRoots = 14,
  wopExportPath = 16,    // obsolete
  wopQueryDeriver = 18,  // obsolete
  wopSetOptions = 19,
  wopCollectGarbage = 20,
  wopQuerySubstitutablePathInfo = 21,
  wopQueryDerivationOutputs = 22,
  wopQueryAllValidPaths = 23,
  wopQueryFailedPaths = 24,
  wopClearFailedPaths = 25,
  wopQueryPathInfo = 26,
  wopImportPaths = 27,  // obsolete
  wopQueryDerivationOutputNames = 28,
  wopQueryPathFromHashPart = 29,
  wopQuerySubstitutablePathInfos = 30,
  wopQueryValidPaths = 31,
  wopQuerySubstitutablePaths = 32,
  wopQueryValidDerivers = 33,
  wopOptimiseStore = 34,
  wopVerifyStore = 35,
  wopBuildDerivation = 36,
  wopAddSignatures = 37,
  wopNarFromPath = 38,
  wopAddToStoreNar = 39,
  wopQueryMissing = 40,
} WorkerOp;

#define STDERR_NEXT 0x6f6c6d67
#define STDERR_READ 0x64617461   // data needed from source
#define STDERR_WRITE 0x64617416  // data for sink
#define STDERR_LAST 0x616c7473
#define STDERR_ERROR 0x63787470
#define STDERR_START_ACTIVITY 0x53545254
#define STDERR_STOP_ACTIVITY 0x53544f50
#define STDERR_RESULT 0x52534c54

Path readStorePath(Store& store, Source& from);
template <class T>
T readStorePaths(Store& store, Source& from);

}  // namespace nix