#!/usr/bin/env python

############################################################################
#
# MODULE:       db.out.ogr
# AUTHOR(S):   	Markus Neteler
#               Converted to Python by Glynn Clements
# PURPOSE:      exports attribute tables into various formats
# COPYRIGHT:    (C) 2007-2014 by Markus Neteler 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: Exports attribute tables into various formats.
#% keyword: database
#% keyword: export
#% keyword: output
#% keyword: attribute table
#%end

#%option G_OPT_V_INPUT
#% key: input
#% label: GRASS table name
#% required: yes
#%end

#%option G_OPT_F_OUTPUT
#% key: output
#% description: Output table file name or DB connection string
#% required : yes
#%end

#%option G_OPT_V_FIELD
#% required: no
#%end

#%option
#% key: format
#% type: string
#% description: Table format
#% required: yes
#% options: CSV,DBF,GML,MySQL,PostgreSQL,SQLite
#% answer: CSV
#%end

#%option
#% key: table
#% type: string
#% key_desc: name
#% description: Name for output table (default: input name)
#% required: no
#%end

import os

from grass.script.utils import try_remove, basename
from grass.script import core as gcore
from grass.exceptions import CalledModuleError


def main():
    input = options['input']
    layer = options['layer']
    format = options['format']
    output = options['output']
    table = options['table']

    if format.lower() == 'dbf':
        format = "ESRI_Shapefile"

    if format.lower() == 'csv':
        olayer = basename(output, 'csv')
    else:
        olayer = None

    # is there a simpler way of testing for --overwrite?
    dbffile = input + '.dbf'
    if os.path.exists(dbffile) and not gcore.overwrite():
        gcore.fatal(_("File <%s> already exists") % dbffile)

    if olayer:
        try:
            gcore.run_command('v.out.ogr', quiet=True, input=input,
                              layer=layer, output=output, format=format,
                              type='point,line,area', olayer=olayer)
        except CalledModuleError:
            gcore.fatal(_("Module <%s> failed") % 'v.out.ogr')

    else:
        try:
            gcore.run_command('v.out.ogr', quiet=True, input=input,
                              layer=layer, output=output,
                              format=format, type='point,line,area')
        except CalledModuleError:
            gcore.fatal(_("Module <%s> failed") % 'v.out.ogr')

    if format == "ESRI_Shapefile":
        exts = ['shp', 'shx', 'prj']
        if output.endswith('.dbf'):
            outname = basename(output, 'dbf')
            for ext in exts:
                try_remove("%s.%s" % (outname, ext))
            outname += '.dbf'
        else:
            for ext in exts:
                try_remove(os.path.join(output, "%s.%s" % (input, ext)))
            outname = os.path.join(output, input + ".dbf")
    elif format.lower() == 'csv':
        outname = output + '.csv'
    else:
        outname = input

    gcore.message(_("Exported table <%s>") % outname)

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