#!/usr/bin/env python2
# -*- coding: utf-8 -*-
############################################################################
#
# MODULE:	t.rast3d.mapcalc
# AUTHOR(S):	Soeren Gebbert
#
# PURPOSE:	Perform r3.mapcalc expressions on maps of sampled space time raster3d datasets
# COPYRIGHT:	(C) 2012-2017 by the GRASS Development Team
#
#  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.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#############################################################################

#%module
#% description: Performs r3.mapcalc expressions on maps of sampled space time 3D raster datasets.
#% keyword: temporal
#% keyword: algebra
#% keyword: raster3d
#% keyword: voxel
#% keyword: time
#%end

#%option G_OPT_STR3DS_INPUTS
#%end

#%option
#% key: expression
#% type: string
#% description: r3.mapcalc expression applied to each time step of the sampled data
#% required: yes
#% multiple: no
#%end

#%option G_OPT_T_SAMPLE
#% key: method
#% answer: during,overlap,contain,equal
#%end

#%option G_OPT_STR3DS_OUTPUT
#%end

#%option
#% key: basename
#% type: string
#% label: Basename of the new generated output maps
#% description: A numerical suffix separated by an underscore will be attached to create a unique identifier
#% required: yes
#% multiple: no
#% gisprompt:
#%end

#%option
#% key: nprocs
#% type: integer
#% description: Number of r3.mapcalc processes to run in parallel
#% required: no
#% multiple: no
#% answer: 1
#%end

#%flag
#% key: n
#% description: Register Null maps
#%end

#%flag
#% key: s
#% description: Check the spatial topology of temporally related maps and process only spatially related maps
#%end

from multiprocessing import Process
import copy
import grass.script as grass


############################################################################


def main():
    # lazy imports
    import grass.temporal as tgis

    # Get the options
    inputs = options["inputs"]
    output = options["output"]
    expression = options["expression"]
    base = options["basename"]
    method = options["method"]
    nprocs = int(options["nprocs"])
    register_null = flags["n"]
    spatial = flags["s"]

    # Create the method list
    method = method.split(",")

    # Make sure the temporal database exists
    tgis.init()

    tgis.dataset_mapcalculator(inputs, output, "raster3d", expression,
                               base, method, nprocs, register_null, spatial)

###############################################################################

if __name__ == "__main__":
    options, flags = grass.parser()
    main()
