#!/usr/bin/env python

from dm.common.exceptions.invalidRequest import InvalidRequest
from dm.ds_web_service.api.fileRestApi import FileRestApi
from dsWebServiceSessionCli import DsWebServiceSessionCli

class StatExperimentFileCli(DsWebServiceSessionCli):
    def __init__(self):
        DsWebServiceSessionCli.__init__(self)
        self.addOption('', '--experiment', dest='experimentName', help='Experiment name.')
        self.addOption('', '--relative-path', dest='experimentFilePath', help='Experiment (relative) file path.')

    def checkArgs(self):
        if self.options.experimentFilePath is None:
            raise InvalidRequest('Experiment file path must be provided.')
        if self.options.experimentName is None:
            raise InvalidRequest('Experiment name must be provided.')

    def getExperimentName(self):
        return self.options.experimentName

    def getExperimentFilePath(self):
        return self.options.experimentFilePath

    def runCommand(self):
        self.parseArgs(usage="""
    dm-stat-file --experiment=EXPERIMENTNAME --relative-path=EXPERIMENTFILEPATH

Description:
    Retrieves stat information for a given file.
        """)
        self.checkArgs()
        api = FileRestApi(self.getLoginUsername(), self.getLoginPassword(), self.getServiceHost(), self.getServicePort(), self.getServiceProtocol())
        fileMetadata = api.statFile(self.getExperimentFilePath(), self.getExperimentName())
        print fileMetadata.getDisplayString(self.getDisplayKeys(), self.getDisplayFormat())

#######################################################################
# Run command.
if __name__ == '__main__':
    cli = StatExperimentFileCli()
    cli.run()