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

"""
***************************************************************************
    rasterize.py
    ---------------------
    Date                 : September 2013
    Copyright            : (C) 2013 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.                                   *
*                                                                         *
***************************************************************************
"""
from builtins import str

__author__ = 'Alexander Bruy'
__date__ = 'September 2013'
__copyright__ = '(C) 2013, 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.parameters import (ParameterVector,
                                        ParameterExtent,
                                        ParameterTableField,
                                        ParameterSelection,
                                        ParameterNumber,
                                        ParameterString)
from processing.core.outputs import OutputRaster

from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
from processing.algs.gdal.GdalUtils import GdalUtils

from processing.tools.vector import ogrConnectionString, ogrLayerName

pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]


class rasterize(GdalAlgorithm):

    INPUT = 'INPUT'
    FIELD = 'FIELD'
    DIMENSIONS = 'DIMENSIONS'
    WIDTH = 'WIDTH'
    HEIGHT = 'HEIGHT'
    NO_DATA = 'NO_DATA'
    RTYPE = 'RTYPE'
    OPTIONS = 'OPTIONS'
    OUTPUT = 'OUTPUT'

    TYPE = ['Byte', 'Int16', 'UInt16', 'UInt32', 'Int32', 'Float32', 'Float64']

    RAST_EXT = 'RAST_EXT'

    def icon(self):
        return QIcon(os.path.join(pluginPath, 'images', 'gdaltools', 'rasterize.png'))

    def __init__(self):
        super().__init__()
        self.addParameter(ParameterVector(self.INPUT, self.tr('Input layer')))
        self.addParameter(ParameterTableField(self.FIELD,
                                              self.tr('Attribute field'), self.INPUT))
        self.addParameter(ParameterSelection(self.DIMENSIONS,
                                             self.tr('Set output raster size (ignored if above option is checked)'),
                                             ['Output size in pixels', 'Output resolution in map units per pixel'], 1))
        self.addParameter(ParameterNumber(self.WIDTH,
                                          self.tr('Horizontal'), 0.0, 99999999.999999, 100.0))
        self.addParameter(ParameterNumber(self.HEIGHT,
                                          self.tr('Vertical'), 0.0, 99999999.999999, 100.0))
        self.addParameter(ParameterExtent(self.RAST_EXT, self.tr('Raster extent')))
        self.addParameter(ParameterString(self.NO_DATA,
                                          self.tr("Nodata value"),
                                          '', optional=True))

        self.addParameter(ParameterString(self.OPTIONS,
                                          self.tr('Additional creation options'),
                                          optional=True,
                                          metadata={'widget_wrapper': 'processing.algs.gdal.ui.RasterOptionsWidget.RasterOptionsWidgetWrapper'}))
        self.addParameter(ParameterSelection(self.RTYPE,
                                             self.tr('Raster type'),
                                             self.TYPE, 5))

        self.addOutput(OutputRaster(self.OUTPUT,
                                    self.tr('Rasterized')))

    def name(self):
        return 'rasterize'

    def displayName(self):
        return self.tr('Rasterize (vector to raster)')

    def group(self):
        return self.tr('Vector conversion')

    def getConsoleCommands(self, parameters):
        inLayer = self.getParameterValue(self.INPUT)
        noData = self.getParameterValue(self.NO_DATA)
        rastext = str(self.getParameterValue(self.RAST_EXT))
        if not rastext:
            rastext = QgsProcessingUtils.combineLayerExtents([inLayer])
        opts = self.getParameterValue(self.OPTIONS)
        out = self.getOutputValue(self.OUTPUT)

        ogrLayer = ogrConnectionString(inLayer)[1:-1]

        if noData is not None:
            noData = str(noData)

        arguments = []
        arguments.append('-a')
        arguments.append(str(self.getParameterValue(self.FIELD)))

        arguments.append('-ot')
        arguments.append(self.TYPE[self.getParameterValue(self.RTYPE)])
        dimType = self.getParameterValue(self.DIMENSIONS)
        arguments.append('-of')
        arguments.append(GdalUtils.getFormatShortNameFromFilename(out))

        regionCoords = rastext.split(',')
        try:
            rastext = []
            rastext.append('-te')
            rastext.append(regionCoords[0])
            rastext.append(regionCoords[2])
            rastext.append(regionCoords[1])
            rastext.append(regionCoords[3])
        except IndexError:
            rastext = []
        if rastext:
            arguments.extend(rastext)

        if dimType == 0:
            # size in pixels
            arguments.append('-ts')
            arguments.append(str(self.getParameterValue(self.WIDTH)))
            arguments.append(str(self.getParameterValue(self.HEIGHT)))
        else:
            # resolution in map units per pixel
            arguments.append('-tr')
            arguments.append(str(self.getParameterValue(self.WIDTH)))
            arguments.append(str(self.getParameterValue(self.HEIGHT)))

        if noData and len(noData) > 0:
            arguments.append('-a_nodata')
            arguments.append(noData)

        if opts:
            arguments.append('-co')
            arguments.append(opts)

        arguments.append('-l')

        print(ogrLayerName(inLayer))
        arguments.append(ogrLayerName(inLayer))
        arguments.append(ogrLayer)

        arguments.append(out)
        return ['gdal_rasterize', GdalUtils.escapeAndJoin(arguments)]

    def commandName(self):
        return "gdal_rasterize"