#!/usr/bin/env python

"""
preview_namelists runs the buildnml script for each case component
which creates the namelist and other model input files, it then
copies those files to the CaseDocs subdirectory for inspection
"""

from standard_script_setup import *

from CIME.preview_namelists import create_namelists
from CIME.case              import Case
from CIME.utils             import expect

import argparse, doctest

###############################################################################
def parse_command_line(args, description):
###############################################################################
    parser = argparse.ArgumentParser(
        usage="""\n%s [--debug]
OR
%s --verbose
OR
%s --help
OR
%s --test

\033[1mEXAMPLES:\033[0m
    \033[1;32m# Run \033[0m
    > %s
""" % ((os.path.basename(args[0]), ) * 5),

description=description,

formatter_class=argparse.ArgumentDefaultsHelpFormatter
)

    CIME.utils.setup_standard_logging_options(parser)

    parser.add_argument("caseroot", nargs="?", default=os.getcwd(),
                        help="Case directory to build")

    args = parser.parse_args(args[1:])

    CIME.utils.handle_standard_logging_options(args)

    return args.caseroot

###############################################################################
def _main_func(description):
###############################################################################
    if ("--test" in sys.argv):
        test_results = doctest.testmod(verbose=True)
        sys.exit(1 if test_results.failed > 0 else 0)

    caseroot = parse_command_line(sys.argv, description)
    expect(os.path.isfile(os.path.join(caseroot, "CaseStatus")),
           "case.setup must be run prior to running preview_namelists")
    with Case(caseroot, read_only=False) as case:
        create_namelists(case)

if (__name__ == "__main__"):
    _main_func(__doc__)