#!/usr/bin/python
# -*- coding: utf-8 -*-


import os
import argparse
import glob

import matplotlib.pyplot as plt
from obspy.core import read
from pylot.core.read.data import Data
from pylot.core.read.inputs import AutoPickParameter
from pylot.core.util.structure import DATASTRUCTURE
from pylot.core.pick.autopick import autopickevent
from pylot.core.util.version import get_git_version as _getVersionString

__version__ = _getVersionString()


def autoPyLoT(inputfile):
    '''
    Determine phase onsets automatically utilizing the automatic picking
    algorithms by Kueperkoch et al. 2010/2012.

    :param inputfile: path to the input file containing all parameter
    information for automatic picking (for formatting details, see.
    `~pylot.core.read.input.AutoPickParameter`
    :type inputfile: str
    :return:

    .. rubric:: Example

    '''
    print '************************************'
    print '*********autoPyLoT starting*********'
    print 'The Python picking and Location Tool'
    print '      Version ', _getVersionString(), '2015'
    print ' '
    print 'Authors:'
    print 'S. Wehling-Benatelli'
    print '   Ruhr-Universität Bochum'
    print 'L. Küperkoch'
    print '   BESTEC GmbH, Landau (Pfalz)'
    print 'K. Olbert'
    print '   Christian-Albrechts Universität Kiel'
    print '************************************'

    # reading parameter file

    parameter = AutoPickParameter(inputfile)

    data = Data()

    # getting information on data structure

    if parameter.hasParam('datastructure'):
        datastructure = DATASTRUCTURE[parameter.getParam('datastructure')]()
        dsfields = {'root':parameter.getParam('rootpath'),
                    'dpath':parameter.getParam('datapath'),
                    'dbase':parameter.getParam('database')}

        exf = ['root', 'dpath', 'dbase']

        if parameter.hasParam('eventID'):
            dsfields['eventID'] = parameter.getParam('eventID')
            exf.append('eventID')

        datastructure.modifyFields(**dsfields)
        datastructure.setExpandFields(exf)

        # get path to inventory or dataless-seed file with station meta data
        invdir = parameter.getParam('invdir')

        # multiple event processing
        # read each event in database
        datapath = datastructure.expandDataPath()
        if not parameter.hasParam('eventID'):
            for event in [events for events in glob.glob(os.path.join(datapath, '*')) if os.path.isdir(events)]:
                data.setWFData(glob.glob(os.path.join(datapath, event, '*')))
                print 'Working on event %s' %event
                print data

                wfdat = data.getWFData() # all available streams
                ##########################################################
                # !automated picking starts here!
                picks = autopickevent(wfdat, parameter)

                print '------------------------------------------'
                print '-----Finished event %s!-----' % event
                print '------------------------------------------'

        # single event processing
        else:
            data.setWFData(glob.glob(os.path.join(datapath, parameter.getParam('eventID'), '*')))
            print 'Working on event ', parameter.getParam('eventID')
            print data

            wfdat = data.getWFData() # all available streams
            ##########################################################
            # !automated picking starts here!
            picks = autopickevent(wfdat, parameter)

            print '------------------------------------------'
            print '-------Finished event %s!-------' % parameter.getParam('eventID')
            print '------------------------------------------'

    print '####################################'
    print '************************************'
    print '*********autoPyLoT terminates*******'
    print 'The Python picking and Location Tool'
    print '************************************'

if __name__ == "__main__":
    # parse arguments
    parser = argparse.ArgumentParser(
        description='''autoPyLoT automatically picks phase onset times using higher order statistics,
                       autoregressive prediction and AIC''')

    parser.add_argument('-i', '-I', '--inputfile', type=str,
                        action='store',
                        help='''full path to the file containing the input
                        parameters for autoPyLoT''',
                        default=os.path.join(os.path.expanduser('~'), '.pylot',
                                             'autoPyLoT.in')
                        )
    parser.add_argument('-v', '-V', '--version', action='version',
                        version='autoPyLoT ' + __version__,
                        help='show version information and exit')

    cla = parser.parse_args()

    autoPyLoT(str(cla.inputfile))