import asynchttpserver
import types

proc parseError*(errstr: string): hafasException =
  case errstr:
  of "H_UNKNOWN":
    return hafasException(
      code: SERVER_ERROR,
      message: "unknown internal error",
      statusCode: Http500,
    )
  of "AUTH":
    return hafasException(
      code: ACCESS_DENIED,
      message: "invalid or missing authentication data",
      statusCode: Http401,
    )
  of "R0001":
    return hafasException(
      code: INVALID_REQUEST,
      message: "unknown method",
      statusCode: Http400,
    )
  of "R0002":
    return hafasException(
      code: INVALID_REQUEST,
      message: "invalid or missing request parameters",
      statusCode: Http400,
    )
  of "R0007":
    return hafasException(
      code: SERVER_ERROR,
      message: "internal communication error",
      statusCode: Http500,
    )
  of "R5000":
    return hafasException(
      code: ACCESS_DENIED,
      message: "access denied",
      statusCode: Http401,
    )
  of "S1":
    return hafasException(
      code: SERVER_ERROR,
      message: "journeys search: a connection to the backend server couldn\'t be established",
      statusCode: Http503,
    )
  of "LOCATION":
    return hafasException(
      code: INVALID_REQUEST,
      message: "location/stop not found",
      statusCode: Http400,
    )
  of "H390":
    return hafasException(
      code: INVALID_REQUEST,
      message: "journeys search: departure/arrival station replaced",
      statusCode: Http400,
    )
  of "H410":
    return hafasException(
      code: SERVER_ERROR,
      message: "journeys search: incomplete response due to timetable change"
    )
  of "H455":
    return hafasException(
      code: INVALID_REQUEST,
      message: "journeys search: prolonged stop",
      statusCode: Http400,
    )
  of "H460":
    return hafasException(
      code: INVALID_REQUEST,
      message: "journeys search: stop(s) passed multiple times",
      statusCode: Http400,
    )
  of "H500":
    return hafasException(
      code: INVALID_REQUEST,
      message: "journeys search: too many trains, connection is not complete",
      statusCode: Http400,
    )
  of "H890":
    return hafasException(
      code: NOT_FOUND,
      message: "journeys search unsuccessful",
      statusCode: Http404,
    )
  of "H891":
    return hafasException(
      code: NOT_FOUND,
      message: "journeys search: no route found, try with an intermediate stations",
      statusCode: Http404,
    )
  of "H892":
    return hafasException(
      code: INVALID_REQUEST,
      message: "journeys search: query too complex, try less intermediate stations",
      statusCode: Http400,
    )
  of "H895":
    return hafasException(
      code: INVALID_REQUEST,
      message: "journeys search: departure & arrival are too near",
      statusCode: Http400,
    )
  of "H899":
    return hafasException(
      code: SERVER_ERROR,
      message: "journeys search unsuccessful or incomplete due to timetable change"
    )
  of "H900":
    return hafasException(
      code: SERVER_ERROR,
      message: "journeys search unsuccessful or incomplete due to timetable change"
    )
  of "H9220":
    return hafasException(
      code: NOT_FOUND,
      message: "journeys search: no stations found close to the address",
      statusCode: Http400,
    )
  of "H9230":
    return hafasException(
      code: SERVER_ERROR,
      message: "journeys search: an internal error occured",
      statusCode: Http500,
    )
  of "H9240":
    return hafasException(
      code: NOT_FOUND,
      message: "journeys search unsuccessful",
      statusCode: Http404,
    )
  of "H9250":
    return hafasException(
      code: SERVER_ERROR,
      message: "journeys search: leg query interrupted",
      statusCode: Http500,
    )
  of "H9260":
    return hafasException(
      code: INVALID_REQUEST,
      message: "journeys search: unknown departure station",
      statusCode: Http400,
    )
  of "H9280":
    return hafasException(
      code: INVALID_REQUEST,
      message: "journeys search: unknown intermediate station",
      statusCode: Http400,
    )
  of "H9300":
    return hafasException(
      code: INVALID_REQUEST,
      message: "journeys search: unknown arrival station",
      statusCode: Http400,
    )
  of "H9320":
    return hafasException(
      code: INVALID_REQUEST,
      message: "journeys search: the input is incorrect or incomplete",
      statusCode: Http400,
    )
  of "H9360":
    return hafasException(
      code: INVALID_REQUEST,
      message: "journeys search: error in a data field",
      statusCode: Http400,
    )
  of "H9380":
    return hafasException(
      code: INVALID_REQUEST,
      message: "journeys search: departure/arrival/intermediate station defined more than once",
      statusCode: Http400,
    )
  of "SQ001":
    return hafasException(
      code: SERVER_ERROR,
      message: "no departures/arrivals data available",
      statusCode: Http503,
    )
  of "SQ005":
    return hafasException(
      code: NOT_FOUND,
      message: "no trips found",
      statusCode: Http404,
    )
  of "TI001":
    return hafasException(
      code: SERVER_ERROR,
      message: "no trip info available",
      statusCode: Http503,
    )
  return hafasException(
    code: SERVER_ERROR,
    message: "unknown HAFAS exception " & errstr,
    statusCode: Http500,
  )