#!/usr/bin/env python
"""

    test2.py
    [--log_file PATH]
    [--verbose]

"""

################################################################################
#
#   test2
#
#
#   Copyright (c) 7/16/2010 Leo Goodstadt
#
#   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.
#################################################################################

import sys, os

# add self to search path for testing
if __name__ == '__main__':
    exe_path = os.path.split(os.path.abspath(sys.argv[0]))[0]
    module_name = os.path.split(sys.argv[0])[1]
    module_name = os.path.splitext(module_name)[0];
else:
    module_name = __name__

# Use import path from <<../python_modules>>
if __name__ == '__main__':
    sys.path.insert(0, os.path.abspath(os.path.join(exe_path,"../..")))



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#   options


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if __name__ == '__main__':
    from optparse import OptionParser
    import StringIO

    parser = OptionParser(version="%prog 1.0", usage = "\n\n    %progs [options]")
    parser.add_option("-i", "--input_file", dest="input_file",
                      metavar="FILE",
                      type="string",
                      help="Name and path of input file. "
                          "Defaults to reading from STDIN.")

    #
    #   general options: verbosity / logging
    #
    parser.add_option("-v", "--verbose", dest = "verbose",
                      action="count", default=0,
                      help="Print more verbose messages for each additional verbose level.")
    parser.add_option("-L", "--log_file", dest="log_file",
                      metavar="FILE",
                      type="string",
                      help="Name and path of log file")
    parser.add_option("--skip_parameter_logging", dest="skip_parameter_logging",
                        action="store_true", default=False,
                        help="Do not print program parameters to log.")
    parser.add_option("--debug", dest="debug",
                        action="count", default=0,
                        help="Set default program parameters in debugging mode.")







    #
    #   pipeline
    #
    parser.add_option("-t", "--target_tasks", dest="target_tasks",
                        action="append",
                        default = list(),
                        metavar="JOBNAME",
                        type="string",
                        help="Target task(s) of pipeline.")
    parser.add_option("-j", "--jobs", dest="jobs",
                        default=1,
                        metavar="N",
                        type="int",
                        help="Allow N jobs (commands) to run simultaneously.")
    parser.add_option("-n", "--just_print", dest="just_print",
                        action="store_true", default=False,
                        help="Don't actually run any commands; just print the pipeline.")
    parser.add_option("--flowchart", dest="flowchart",
                        metavar="FILE",
                        type="string",
                        help="Don't actually run any commands; just print the pipeline "
                             "as a flowchart.")

    #
    #   Less common pipeline options
    #
    parser.add_option("--key_legend_in_graph", dest="key_legend_in_graph",
                        action="store_true", default=False,
                        help="Print out legend and key for dependency graph.")
    parser.add_option("--draw_graph_horizontally", dest="draw_horizontally",
                        action="store_true", default=False,
                        help="Draw horizontal dependency graph.")
    parser.add_option("--forced_tasks", dest="forced_tasks",
                        action="append",
                        default = list(),
                        metavar="JOBNAME",
                        type="string",
                        help="Pipeline task(s) which will be included even if they are up to date.")

    # get help string
    f =StringIO.StringIO()
    parser.print_help(f)
    helpstr = f.getvalue()
    original_args = " ".join(sys.argv)
    (options, remaining_args) = parser.parse_args()


    #vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
    #                                             #
    #   Debug: Change these                       #
    #                                             #
    #^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    options.flowchart = "front_page_flowchart.png"
    options.key_legend_in_graph = True
    if options.debug:
        options.log_file                = os.path.join("test2.log")
        options.verbose                 = 5
        options.log_parameters          = True
    #vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
    #                                             #
    #   Debug: Change these                       #
    #                                             #
    #^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

    #
    #   mandatory options
    #
    mandatory_options = []
    def check_mandatory_options (options, mandatory_options, helpstr):
        """
        Check if specified mandatory options have b een defined
        """
        missing_options = []
        for o in mandatory_options:
            if not getattr(options, o):
                missing_options.append("--" + o)

        if not len(missing_options):
            return

        raise Exception("Missing mandatory parameter%s: %s.\n\n%s\n\n" %
                        ("s" if len(missing_options) > 1 else "",
                         ", ".join(missing_options),
                         helpstr))
    check_mandatory_options (options, mandatory_options, helpstr)


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#   imports


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from ruffus import *
from ruffus.ruffus_exceptions import JobSignalledBreak

#from json import dumps
#from collections import defaultdict



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#   Functions


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#   Logger


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if __name__ == '__main__':
    import logging
    import logging.handlers

    MESSAGE = 15
    logging.addLevelName(MESSAGE, "MESSAGE")

    def setup_std_logging (logger, log_file, verbose):
        """
        set up logging using programme options
        """
        class debug_filter(logging.Filter):
            """
            Ignore INFO messages
            """
            def filter(self, record):
                return logging.INFO != record.levelno

        class NullHandler(logging.Handler):
            """
            for when there is no logging
            """
            def emit(self, record):
                pass

        # We are interesting in all messages
        logger.setLevel(logging.DEBUG)
        has_handler = False

        # log to file if that is specified
        if log_file:
            handler = logging.FileHandler(log_file, delay=False)
            handler.setFormatter(logging.Formatter("%(asctime)s - %(name)s - %(levelname)6s - %(message)s"))
            handler.setLevel(MESSAGE)
            logger.addHandler(handler)
            has_handler = True

        # log to stderr if verbose
        if verbose:
            stderrhandler = logging.StreamHandler(sys.stderr)
            stderrhandler.setFormatter(logging.Formatter("    %(message)s"))
            stderrhandler.setLevel(logging.DEBUG)
            if log_file:
                stderrhandler.addFilter(debug_filter())
            logger.addHandler(stderrhandler)
            has_handler = True

        # no logging
        if not has_handler:
            logger.addHandler(NullHandler())


    #
    #   set up log
    #
    logger = logging.getLogger(module_name)
    setup_std_logging(logger, options.log_file, options.verbose)

    #
    #   Allow logging across Ruffus pipeline
    #
    def get_logger (logger_name, args):
        return logger

    from ruffus.proxy_logger import *
    (logger_proxy,
     logging_mutex) = make_shared_logger_and_proxy (get_logger,
                                                    module_name,
                                                    {})

    #
    #   log programme parameters
    #
    if not options.skip_parameter_logging:
        programme_name = os.path.split(sys.argv[0])[1]
        logger.info("%s %s" % (programme_name, original_args))


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#   Pipeline


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@files(None, "a.1")
def task1(input_file, output_file):
    open(output_file, "w")

@transform(task1,  suffix("1"),  "2")
def task2(input_file, output_file):
    open(output_file, "w")

@transform(task2,  suffix("2"),  "3")
def task3(input_file, output_file):
    open(output_file, "w")

@transform(task3,  suffix("3"),  "4")
def task4(input_file, output_file):
    open(output_file, "w")

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#   Main logic


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import time
open("a.2", "w")
time.sleep(1)
open("a.1", "w")
time.sleep(1)
open("a.3", "w")
pipeline_printout_graph (     open(options.flowchart, "w"),
                     os.path.splitext(options.flowchart)[1][1:],
                     [task4],
                     no_key_legend   = not options.key_legend_in_graph,
                      user_colour_scheme = {"colour_scheme_index":0},
                      pipeline_name = "Pipeline Flowchart:",
                      size          = (6,5),
                      dpi           = 72,
                              )
os.unlink("a.1")
os.unlink("a.2")
os.unlink("a.3")

#pipeline_run(options.target_tasks, options.forced_tasks,
#                    multiprocess    = options.jobs,
#                    logger          = stderr_logger,
#                    verbose         = options.verbose)