// Copyright 2021 The Simlin Authors. All rights reserved.
// Use of this source code is governed by the Apache License,
// Version 2.0, that can be found in the LICENSE file.

import { ErrorCode } from './iengine';

export { ErrorCode };

export function errorCodeDescription(code: ErrorCode): string {
  switch (code) {
    case ErrorCode.NoError:
      return 'Internal error';
    case ErrorCode.DoesNotExist:
      return 'Does not exist';
    case ErrorCode.XmlDeserialization:
      return 'XML deserialization error';
    case ErrorCode.VensimConversion:
      return 'Vensim conversion error';
    case ErrorCode.ProtobufDecode:
      return 'Internal error (protocol buffer decoding)';
    case ErrorCode.InvalidToken:
      return 'Invalid input in equation';
    case ErrorCode.UnrecognizedEOF:
      return 'Unexpectedly reached the end of the equation';
    case ErrorCode.UnrecognizedToken:
      return 'Unrecognized input in equation';
    case ErrorCode.ExtraToken:
      return 'Extra input after equation fully parsed';
    case ErrorCode.UnclosedComment:
      return 'Unclosed comment';
    case ErrorCode.UnclosedQuotedIdent:
      return 'Unclosed quoted identifier';
    case ErrorCode.ExpectedNumber:
      return 'Expected a literal number';
    case ErrorCode.UnknownBuiltin:
      return 'Reference to unknown or unimplemented builtin';
    case ErrorCode.BadBuiltinArgs:
      return 'Builtin function arguments';
    case ErrorCode.EmptyEquation:
      return 'Variable has empty equation';
    case ErrorCode.BadModuleInputDst:
      return 'Module input destination is unknown';
    case ErrorCode.BadModuleInputSrc:
      return 'Module input source is unknown';
    case ErrorCode.NotSimulatable:
      return 'Model has errors and is not simulatable';
    case ErrorCode.BadTable:
      return 'No graphical function for specified variable';
    case ErrorCode.BadSimSpecs:
      return 'Simulation Specs are not valid';
    case ErrorCode.NoAbsoluteReferences:
      return 'Absolute references are not supported';
    case ErrorCode.CircularDependency:
      return 'Circular dependency';
    case ErrorCode.ArraysNotImplemented:
      return 'Arrays not implemented';
    case ErrorCode.MultiDimensionalArraysNotImplemented:
      return 'Multi-dimensional arrays not implemented';
    case ErrorCode.BadDimensionName:
      return 'Unknown dimension name';
    case ErrorCode.BadModelName:
      return 'Unknown model name';
    case ErrorCode.MismatchedDimensions:
      return 'Mismatched dimensions';
    case ErrorCode.ArrayReferenceNeedsExplicitSubscripts:
      return 'Array reference needs explicit subscripts';
    case ErrorCode.DuplicateVariable:
      return 'Duplicate variable';
    case ErrorCode.UnknownDependency:
      return 'Equation refers to unknown variable';
    case ErrorCode.VariablesHaveErrors:
      return 'Variables have equation errors';
    case ErrorCode.UnitDefinitionErrors:
      return "The project's unit definitions have errors";
    case ErrorCode.Generic:
      return 'Generic error from core engine';
    case ErrorCode.NoAppInUnits:
      return 'Function calls are not allowed in unit definition';
    case ErrorCode.NoSubscriptInUnits:
      return 'Subscripts are not allowed in unit definition';
    case ErrorCode.NoIfInUnits:
      return 'If statements are not allowed in unit definition';
    case ErrorCode.NoUnaryOpInUnits:
      return "Negative units like `-people` don't make sense. Try e.g. `1/people`";
    case ErrorCode.BadBinaryOpInUnits:
      return 'Only * and / operations are supported in unit definitions';
    case ErrorCode.NoConstInUnits:
      return 'Constants are not supported in unit definitions';
    case ErrorCode.ExpectedInteger:
      return 'Expected an integer';
    case ErrorCode.ExpectedIntegerOne:
      return 'Expected the integer `1`';
    case ErrorCode.DuplicateUnit:
      return 'Duplicate unit definition';
    case ErrorCode.ExpectedModule:
      return 'Expected a module, found a non-module';
    case ErrorCode.ExpectedIdent:
      return 'Expected an identifier';
    case ErrorCode.UnitMismatch:
      return 'Unit mismatch';
  }
  return 'Unknown error from core engine';
}