# -*- coding: utf-8 -*-

"""
***************************************************************************
    translate.py
    ---------------------
    Date                 : August 2012
    Copyright            : (C) 2012 by Victor Olaya
    Email                : volayaf at gmail dot com
***************************************************************************
*                                                                         *
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU General Public License as published by  *
*   the Free Software Foundation; either version 2 of the License, or     *
*   (at your option) any later version.                                   *
*                                                                         *
***************************************************************************
"""

__author__ = 'Victor Olaya'
__date__ = 'August 2012'
__copyright__ = '(C) 2012, Victor Olaya'

# This will get replaced with a git SHA1 when you do a git archive

__revision__ = '$Format:%H$'

from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
from processing.parameters.ParameterRaster import ParameterRaster
from processing.parameters.ParameterBoolean import ParameterBoolean
from processing.parameters.ParameterSelection import ParameterSelection
from processing.parameters.ParameterString import ParameterString
from processing.outputs.OutputRaster import OutputRaster

from processing.algs.gdal.GdalUtils import GdalUtils


class gdaladdo(GdalAlgorithm):

    INPUT = 'INPUT'
    LEVELS = 'LEVELS'
    CLEAN = 'CLEAN'
    RESAMPLING_METHOD = 'RESAMPLING_METHOD'
    FORMAT = 'FORMAT'
    OUTPUT = 'OUTPUT'

    METHODS = [
        'nearest',
        'average',
        'gauss',
        'cubic',
        'average_mp',
        'average_magphase',
        'mode',
        ]

    FORMATS = ['Internal (if possible)', 'External (GTiff .ovr)',
               'External (ERDAS Imagine .aux)']

    def commandLineName(self):
        return "gdalogr:overviews"

    def defineCharacteristics(self):
        self.name = 'Build overviews (pyramids)'
        self.group = '[GDAL] Miscellaneous'
        self.addParameter(ParameterRaster(self.INPUT, 'Input layer', False))
        self.addParameter(ParameterString(self.LEVELS, 'Overview levels',
                          '2 4 8 16'))
        self.addParameter(ParameterBoolean(self.CLEAN,
                          'Remove all existing overviews', False))
        self.addParameter(ParameterSelection(self.RESAMPLING_METHOD,
                          'Resampling method', self.METHODS, 0))
        self.addParameter(ParameterSelection(self.FORMAT, 'Overview format',
                          self.FORMATS, 0))
        self.addOutput(OutputRaster(self.OUTPUT, 'Output layer', True))

    def processAlgorithm(self, progress):
        inFile = self.getParameterValue(self.INPUT)
        clearOverviews = self.getParameterValue(self.CLEAN)
        ovrFormat = self.getParameterValue(self.FORMAT)

        arguments = []
        arguments.append(inFile)
        if clearOverviews:
            arguments.append('-clean')
        arguments.append('-r')
        arguments.append(
                self.METHODS[self.getParameterValue(self.RESAMPLING_METHOD)])

        if ovrFormat == 1:
            # external .ovr
            arguments.append('-ro')
        elif ovrFormat == 2:
            # external .aux
            arguments.extend('--config USE_RRD YES'.split(' '))

        arguments.extend(self.getParameterValue(self.LEVELS).split(' '))
        self.setOutputValue(self.OUTPUT, inFile)

        GdalUtils.runGdal(['gdaladdo', GdalUtils.escapeAndJoin(arguments)],
                          progress)