#!/usr/bin/env python3
#
############################################################################
#
# MODULE:       d.wms
#
# AUTHOR(S):    Stepan Turek <stepan.turek seznam.cz> (mentor: Martin Landa)
#
# PURPOSE:      Wrapper for wxGUI to add WMS into layer tree
#
# COPYRIGHT:    (C) 2012 by Stepan Turek, and the GRASS Development Team
#
#   This program is free software under the GNU General Public License
#   (>=v2). Read the file COPYING that comes with GRASS for details.
#
#############################################################################

# %module
# % description: Downloads and displays data from WMS/WMTS/NASA OnEarth server.
# % keyword: raster
# % keyword: import
# % keyword: WMS
# % keyword: WMTS
# % keyword: OnEarth
# %end

# %option
# % key: url
# % type: string
# % description: Typically starts with "http://"
# % required: yes
# %end

# %option
# % key: map
# % type: string
# % description: Name for output WMS layer in the layer tree
# % required : yes
# %end

# %option
# % key: layers
# % type: string
# % description: Layer(s) to request from the map server
# % multiple: yes
# % required: yes
# %end

# %option
# % key: styles
# % type: string
# % description: Layer style(s) to request from the map server
# % multiple: yes
# % guisection: Map style
# %end

# %option
# % key: format
# % type: string
# % description: Image format requested from the server
# % options: geotiff,tiff,jpeg,gif,png,png8
# % answer: png
# % guisection: Request
# %end

# %option
# % key: srs
# % type: integer
# % description: EPSG code of requested source projection
# % answer:4326
# % guisection: Request
# %end

# %option
# % key: driver
# % type:string
# % description: Driver used to communication with server
# % descriptions: WMS_GDAL;Download data using GDAL WMS driver;WMS_GRASS;Download data using native GRASS-WMS driver;WMTS_GRASS;Download data using native GRASS-WMTS driver;OnEarth_GRASS;Download data using native GRASS-OnEarth driver;
# % options:WMS_GDAL, WMS_GRASS, WMTS_GRASS, OnEarth_GRASS
# % answer:WMS_GRASS
# % guisection: Connection
# %end

# %option
# % key: wms_version
# % type:string
# % description: WMS standard version
# % options: 1.1.1,1.3.0
# % answer: 1.1.1
# % guisection: Request
# %end

# %option
# % key: maxcols
# % type:integer
# % description: Maximum columns to request at a time
# % answer:512
# % guisection: Request
# %end

# %option
# % key: maxrows
# % type: integer
# % description: Maximum rows to request at a time
# % answer: 512
# % guisection: Request
# %end

# %option
# % key: urlparams
# % type:string
# % description: Additional query parameters to pass to the server
# % guisection: Request
# %end

# %option
# % key: username
# % type:string
# % description: Username for server connection
# % guisection: Connection
# %end

# %option
# % key: password
# % type:string
# % description: Password for server connection
# % guisection: Connection
# %end

# %option
# % key: method
# % type: string
# % description: Interpolation method to use in reprojection
# % options:nearest,linear,cubic,cubicspline
# % answer:nearest
# % required: no
# %end

# %option
# % key: bgcolor
# % type: string
# % description: Background color
# % guisection: Map style
# %end

# %option G_OPT_F_BIN_INPUT
# % key: capfile
# % required: no
# % description: Capabilities file to parse (input). It is relevant for WMTS_GRASS and OnEarth_GRASS drivers
# %end

# %flag
# % key: o
# % description: Don't request transparent data
# % guisection: Map style
# %end

import os
import sys
import shutil

from grass.script import core as grass

sys.path.append(os.path.join(os.getenv("GISBASE"), "etc", "r.in.wms"))


def GetRegion():
    """!Parse region from GRASS_REGION env var.
    """
    region = os.environ["GRASS_REGION"]
    conv_reg_vals = {'east': 'e',
                     'north': 'n',
                     'west': 'w',
                     'south': 's',
                     'rows': 'rows',
                     'cols': 'cols',
                     'e-w resol': 'ewres',
                     'n-s resol': 'nsres'}

    keys_to_convert = conv_reg_vals.keys()

    conv_region = {}
    region = region.split(';')

    for r in region:
        r = r.split(':')
        r[0] = r[0].strip()

        if r[0] in keys_to_convert:
            conv_region[conv_reg_vals[r[0]]] = float(r[1])

    return conv_region


def main():
    options['region'] = GetRegion()

    if 'GRASS' in options['driver']:
        grass.debug("Using GRASS driver")
        from wms_drv import WMSDrv
        wms = WMSDrv()
    elif 'GDAL' in options['driver']:
        grass.debug("Using GDAL WMS driver")
        from wms_gdal_drv import WMSGdalDrv
        wms = WMSGdalDrv()

    temp_map = wms.GetMap(options, flags)
    shutil.move(temp_map, os.environ["GRASS_RENDER_FILE"])

    return 0

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