#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Copyright 2013 California Institute of Technology. ALL RIGHTS RESERVED.
# 
# 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.
# 
# United States Government Sponsorship acknowledged. This software is subject to
# U.S. export control laws and regulations and has been classified as 'EAR99 NLR'
# (No [Export] License Required except when exporting to an embargoed country,
# end user, or in support of a prohibited end use). By downloading this software,
# the user agrees to comply with all applicable U.S. export laws and regulations.
# The user has the responsibility to obtain export licenses, or other export
# authority as may be required before exporting this software to any 'EAR99'
# embargoed foreign country or citizen of those countries.
#
# Author: Piyush Agram
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~




import sys
import isceobj
from iscesys.Component.Component import Component
from mroipac.grass.grass import Grass

# giangi: taken Piyush code grass.py and adapted

def runUnwrap(self):
    wrapName = self.insar.topophaseFlatFilename
    unwrapName = self.insar.unwrappedIntFilename
    corName = self.insar.coherenceFilename
    width = self.insar.resampIntImage.width
    with isceobj.contextIntImage(
        filename=wrapName,
        width=width,
        accessMode='read') as intImage:

        with isceobj.contextOffsetImage(
            filename=corName,
            width = width,
            accessMode='read') as cohImage:

            with isceobj.contextUnwImage(
                filename=unwrapName,
                width = width,
                accessMode='write') as unwImage:

                grs=Grass(name='insarapp_grass')
                grs.configure()
                grs.wireInputPort(name='interferogram',
                    object=intImage)
                grs.wireInputPort(name='correlation',
                    object=cohImage)
                grs.wireInputPort(name='unwrapped interferogram',
                    object=unwImage)
                grs.unwrap()
                unwImage.renderHdr()

                pass
            pass
        pass

    return None