#! /usr/bin/env python

############################################################################
# Copyright (c) 2016 Dr. Peter Bunting, Aberystwyth University
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
#
# Purpose:  A command to use the rsgislib functions to provide a command line
#           tool for calculating image stats and pyramids
#
# Author: Pete Bunting
# Email: pfb@aber.ac.uk
# Date: 20/04/16
# Version: 1.0
#
# History:
# Version 1.0 - Created.
#
#############################################################################

import argparse
import os

import rsgislib.imageutils
import rsgislib.rastergis

if __name__ == "__main__":
    """
    The command line user interface
    """
    parser = argparse.ArgumentParser(
        prog="rsgiscalcimgstats.py",
        description="""Calculate image statistics and pyramids""",
    )

    parser.add_argument(
        "-i",
        "--image",
        type=str,
        required=True,
        help="""The image on which stats and pyramids are to calculated.""",
    )
    parser.add_argument(
        "-t",
        "--thematic",
        action="store_true",
        default=False,
        help="""The image is thermatic, calc stats and pyramids accordingly.""",
    )
    parser.add_argument(
        "-p",
        "--nopyramids",
        action="store_true",
        default=False,
        help="""Do not calculate image pyramids.""",
    )
    parser.add_argument(
        "-n",
        "--nodata",
        type=float,
        required=True,
        default=0.0,
        help="""No data value for the input image for when calculating stats""",
    )
    parser.add_argument(
        "-c",
        "--noclrtab",
        action="store_true",
        default=False,
        help="""Do not add a colour table (only for thematic images)""",
    )

    # Call the parser to parse the arguments.
    args = parser.parse_args()

    input_img = args.image
    pyramids = not args.nopyramids

    if args.thematic:
        clr_tab = not args.noclrtab
        ignore_zeros = False
        if args.nodata == 0.0:
            ignore_zeros = True
        if os.path.splitext(input_img)[1].lower() == "kea":
            rsgislib.rastergis.pop_rat_img_stats(
                clumps_img=input_img,
                add_clr_tab=clr_tab,
                calc_pyramids=pyramids,
                ignore_zero=ignore_zeros,
            )
        else:
            rsgislib.imageutils.pop_thmt_img_stats(
                input_img,
                add_clr_tab=clr_tab,
                calc_pyramids=pyramids,
                ignore_zero=ignore_zeros,
            )
    else:
        rsgislib.imageutils.pop_img_stats(
            input_img, use_no_data=True, no_data_val=args.nodata, calc_pyramids=pyramids
        )
