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

"""
***************************************************************************
    SagaAlgorithmProvider.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__ = '$Format:%H$'

import os
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from processing.saga.SagaAlgorithm import SagaAlgorithm
from processing.saga.SplitRGBBands import SplitRGBBands
from processing.saga.SagaUtils import SagaUtils
from processing.core.ProcessingConfig import ProcessingConfig, Setting
from processing.core.AlgorithmProvider import AlgorithmProvider
from processing.core.ProcessingLog import ProcessingLog
from processing.tools.system import *

class SagaAlgorithmProvider(AlgorithmProvider):

    def __init__(self):
        AlgorithmProvider.__init__(self)
        self.activate = True

    def initializeSettings(self):
        AlgorithmProvider.initializeSettings(self)
        if isWindows():
            ProcessingConfig.addSetting(Setting(self.getDescription(), SagaUtils.SAGA_FOLDER, "SAGA folder", SagaUtils.sagaPath()))
        ProcessingConfig.addSetting(Setting(self.getDescription(), SagaUtils.SAGA_208, "Enable SAGA 2.0.8 compatibility", True))
        ProcessingConfig.addSetting(Setting(self.getDescription(), SagaUtils.SAGA_IMPORT_EXPORT_OPTIMIZATION, "Enable SAGA Import/Export optimizations", False))
        ProcessingConfig.addSetting(Setting(self.getDescription(), SagaUtils.SAGA_AUTO_RESAMPLING, "Use min covering grid system for resampling", True))
        ProcessingConfig.addSetting(Setting(self.getDescription(), SagaUtils.SAGA_LOG_COMMANDS, "Log execution commands", True))
        ProcessingConfig.addSetting(Setting(self.getDescription(), SagaUtils.SAGA_LOG_CONSOLE, "Log console output", True))
        ProcessingConfig.addSetting(Setting(self.getDescription(), SagaUtils.SAGA_RESAMPLING_REGION_XMIN, "Resampling region min x", 0))
        ProcessingConfig.addSetting(Setting(self.getDescription(), SagaUtils.SAGA_RESAMPLING_REGION_YMIN, "Resampling region min y", 0))
        ProcessingConfig.addSetting(Setting(self.getDescription(), SagaUtils.SAGA_RESAMPLING_REGION_XMAX, "Resampling region max x", 1000))
        ProcessingConfig.addSetting(Setting(self.getDescription(), SagaUtils.SAGA_RESAMPLING_REGION_YMAX, "Resampling region max y", 1000))
        ProcessingConfig.addSetting(Setting(self.getDescription(), SagaUtils.SAGA_RESAMPLING_REGION_CELLSIZE, "Resampling region cellsize", 1))

    def unload(self):
        AlgorithmProvider.unload(self)
        if isWindows():
            ProcessingConfig.removeSetting(SagaUtils.SAGA_FOLDER)
        ProcessingConfig.removeSetting(SagaUtils.SAGA_AUTO_RESAMPLING)
        ProcessingConfig.removeSetting(SagaUtils.SAGA_RESAMPLING_REGION_XMIN)
        ProcessingConfig.removeSetting(SagaUtils.SAGA_RESAMPLING_REGION_YMIN)
        ProcessingConfig.removeSetting(SagaUtils.SAGA_RESAMPLING_REGION_XMAX)
        ProcessingConfig.removeSetting(SagaUtils.SAGA_RESAMPLING_REGION_YMAX)
        ProcessingConfig.removeSetting(SagaUtils.SAGA_RESAMPLING_REGION_CELLSIZE)
        ProcessingConfig.removeSetting(SagaUtils.SAGA_LOG_CONSOLE)
        ProcessingConfig.removeSetting(SagaUtils.SAGA_LOG_COMMANDS)


    def _loadAlgorithms(self):
        self.algs = []
        saga208 = ProcessingConfig.getSetting(SagaUtils.SAGA_208)
        folder = SagaUtils.sagaDescriptionPath()
        for descriptionFile in os.listdir(folder):
            if descriptionFile.endswith("txt"):
                if not saga208:
                    if descriptionFile.startswith("2.0.8"):
                        continue
                else:
                    if descriptionFile.startswith("2.1"):
                        continue
                try:
                    alg = SagaAlgorithm(os.path.join(folder, descriptionFile))
                    if alg.name.strip() != "":
                        self.algs.append(alg)
                    else:
                        ProcessingLog.addToLog(ProcessingLog.LOG_ERROR, "Could not open SAGA algorithm: " + descriptionFile)
                except Exception,e:
                    ProcessingLog.addToLog(ProcessingLog.LOG_ERROR, "Could not open SAGA algorithm: " + descriptionFile +"\n" + str(e))
        self.algs.append(SplitRGBBands())

    def getDescription(self):
        return "SAGA"

    def getName(self):
        return "saga"

    def getSupportedOutputVectorLayerExtensions(self):
        return ["shp"]

    def getSupportedOutputRasterLayerExtensions(self):
        return ["tif"]

    def getSupportedOutputTableLayerExtensions(self):
        return ["dbf"]

    def getIcon(self):
        return  QIcon(os.path.dirname(__file__) + "/../images/saga.png")