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

"""
***************************************************************************
    dinftranslimaccum.py
    ---------------------
    Date                 : October 2012
    Copyright            : (C) 2012 by Alexander Bruy
    Email                : alexander dot bruy 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__ = 'Alexander Bruy'
__date__ = 'October 2012'
__copyright__ = '(C) 2012, Alexander Bruy'

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

__revision__ = '$Format:%H$'

import os

from qgis.PyQt.QtGui import QIcon

from processing.core.GeoAlgorithm import GeoAlgorithm
from processing.core.ProcessingConfig import ProcessingConfig
from processing.core.GeoAlgorithmExecutionException import \
    GeoAlgorithmExecutionException

from processing.core.parameters import ParameterRaster
from processing.core.parameters import ParameterVector
from processing.core.parameters import ParameterBoolean
from processing.core.outputs import OutputRaster

from .TauDEMUtils import TauDEMUtils


class DinfTransLimAccum(GeoAlgorithm):

    DINF_FLOW_DIR_GRID = 'DINF_FLOW_DIR_GRID'
    SUPPLY_GRID = 'SUPPLY_GRID'
    CAPACITY_GRID = 'CAPACITY_GRID'
    IN_CONCENTR_GRID = 'IN_CONCENTR_GRID'
    OUTLETS_SHAPE = 'OUTLETS_SHAPE'
    EDGE_CONTAM = 'EDGE_CONTAM'

    TRANSP_LIM_ACCUM_GRID = 'TRANSP_LIM_ACCUM_GRID'
    DEPOSITION_GRID = 'DEPOSITION_GRID'
    OUT_CONCENTR_GRID = 'OUT_CONCENTR_GRID'

    def getIcon(self):
        return QIcon(os.path.dirname(__file__) + '/../../images/taudem.svg')

    def defineCharacteristics(self):
        self.name, self.i18n_name = self.trAlgorithm('D-Infinity Transport Limited Accumulation')
        self.cmdName = 'dinftranslimaccum'
        self.group, self.i18n_group = self.trAlgorithm('Specialized Grid Analysis tools')

        self.addParameter(ParameterRaster(self.DINF_FLOW_DIR_GRID,
                                          self.tr('D-Infinity Flow Direction Grid'), False))
        self.addParameter(ParameterRaster(self.SUPPLY_GRID,
                                          self.tr('Supply Grid'), False))
        self.addParameter(ParameterRaster(self.CAPACITY_GRID,
                                          self.tr('Transport Capacity Grid'), False))
        self.addParameter(ParameterVector(self.OUTLETS_SHAPE,
                                          self.tr('Outlets Shapefile'),
                                          [ParameterVector.VECTOR_TYPE_POINT], True))
        self.addParameter(ParameterBoolean(self.EDGE_CONTAM,
                                           self.tr('Check for edge contamination'), True))

        self.addOutput(OutputRaster(self.TRANSP_LIM_ACCUM_GRID,
                                    self.tr('Transport Limited Accumulation Grid')))
        self.addOutput(OutputRaster(self.DEPOSITION_GRID,
                                    self.tr('Deposition Grid')))

    def processAlgorithm(self, progress):
        commands = []
        commands.append(os.path.join(TauDEMUtils.mpiexecPath(), 'mpiexec'))

        processNum = ProcessingConfig.getSetting(TauDEMUtils.MPI_PROCESSES)
        if processNum <= 0:
            raise GeoAlgorithmExecutionException(
                self.tr('Wrong number of MPI processes used. Please set '
                        'correct number before running TauDEM algorithms.'))

        commands.append('-n')
        commands.append(unicode(processNum))
        commands.append(os.path.join(TauDEMUtils.taudemPath(), self.cmdName))
        commands.append('-ang')
        commands.append(self.getParameterValue(self.DINF_FLOW_DIR_GRID))
        commands.append('-tsup')
        commands.append(self.getParameterValue(self.SUPPLY_GRID))
        commands.append('-tc')
        commands.append(self.getParameterValue(self.CAPACITY_GRID))
        param = self.getParameterValue(self.OUTLETS_SHAPE)
        if param is not None:
            commands.append('-o')
            commands.append(param)
        if not self.getParameterValue(self.EDGE_CONTAM):
            commands.append('-nc')

        commands.append('-tla')
        commands.append(self.getOutputValue(self.TRANSP_LIM_ACCUM_GRID))
        commands.append('-tdep')
        commands.append(self.getOutputValue(self.DEPOSITION_GRID))

        TauDEMUtils.executeTauDEM(commands, progress)
