#!/usr/bin/env python

#------------------------------------------------------------------------------------------
## Copyright 2010 Alexey Petrov
##
## Licensed under the Apache License, Version 2.0 (the "License");
## you may not use this file except in compliance with the License.
## You may obtain a copy of the License at
##
##     http://www.apache.org/licenses/LICENSE-2.0
##
## Unless required by applicable law or agreed to in writing, software
## distributed under the License is distributed on an "AS IS" BASIS,
## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
## See the License for the specific language governing permissions and
## limitations under the License.
##
## See http://sourceforge.net/apps/mediawiki/balloon-foam
##
## Author : Alexey Petrov
##


#------------------------------------------------------------------------------------------
"""
Lists all existing cloud studies or files uploaded for the given study
"""

#------------------------------------------------------------------------------------------
import balloon.common as common
from balloon.common import print_d, print_i, print_e, sh_command
from balloon.common import Timer, WorkerPool, compute_md5

import balloon.amazon as amazon
from balloon.amazon.s3 import TRootObject, TStudyObject, TFileObject, TSeedObject

import sys, os, os.path, uuid, hashlib


#------------------------------------------------------------------------------------------
def read_files( the_study_object, the_printing_depth ) :
    "Reading the study files"
    for a_file_object in the_study_object :
        print_d( "a_file_object = %s\n" % a_file_object, the_printing_depth )
        print a_file_object.key()
        
        pass

    pass


#------------------------------------------------------------------------------------------
def read_studies( the_root_object, the_printing_depth ) :
    "Reading the studies"
    for a_study_object in the_root_object :
        print_d( "a_study_object = %s\n" % a_study_object, the_printing_depth )
        print a_study_object.name()

        pass

    pass


#--------------------------------------------------------------------------------------
def main() :
    #----------------------- Defining utility command-line interface -------------------------    
    an_usage_description = "%prog"

    from ls_options import usage_description as usage_description_options
    an_usage_description += usage_description_options()
    
    from balloon import VERSION
    a_version = "%s" % VERSION

    from optparse import IndentedHelpFormatter
    a_help_formatter = IndentedHelpFormatter( width = 127 )

    from optparse import OptionParser
    an_option_parser = OptionParser( usage = an_usage_description, version = a_version, formatter = a_help_formatter )

    # Definition of the command line arguments
    from ls_options import add as add_options
    add_options( an_option_parser )

    amazon.security_options.add( an_option_parser )

    common.options.add( an_option_parser )


    #------------------ Extracting and verifying command-line arguments ----------------------
    an_options, an_args = an_option_parser.parse_args()

    common.options.extract( an_option_parser )

    AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY = amazon.security_options.extract( an_option_parser )

    from ls_options import extract as extract_options
    a_study_name = extract_options( an_option_parser )

    print_i( "--------------------------- Looking for study root ------------------------------\n" )
    a_root_object = TRootObject.get( AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY )
    print_d( "a_root_object = %s\n" % a_root_object )


    if a_study_name == None :
        print_i( "---------------------------- Reading the studies --------------------------------\n" )
        read_studies( a_root_object, 0 )
        pass
    else :
        a_study_object = None
        try:
            a_study_object = TStudyObject.get( a_root_object, a_study_name )
        except Exception, exc:
            print_e( str( exc ) )
            pass
        print_d( "a_study_object = %s\n" % a_study_object )

        print_i( "---------------------------- Reading the study files ----------------------------\n" )
        read_files( a_study_object, 0 )
        
        pass
    
    print_i( "-------------------------------------- OK ---------------------------------------\n" )
    pass


#------------------------------------------------------------------------------------------
if __name__ == '__main__' :
    main()
    pass


#------------------------------------------------------------------------------------------
