#!/usr/bin/env ipython2

# pylint: disable=C0103
import os as _os
import atexit

## define state vars
__interactive__ = 1      ## CLI __main__ changes to 0
__version__ = "0.3.8"

## Possible values for __loglevel__: "DEBUG"  "INFO"  "WARN"  "ERROR"
__debugflag__ = "./.debug"
__debugfile__ = "./ipyrad_log.txt"

## debug is set based on whether the flag exists
if _os.path.exists(__debugflag__):
    __loglevel__ = "DEBUG"
else:
    __loglevel__ = "ERROR"

## main ip.functions
from . import load
from . import assemble 
from .load import save_json
from .load import load_json
#from . import plotting  ## do not autoimport plotting, import as ipp
#from . import analysis  ## do not autoimport analysis, import as ipa

## bring nested functions to ip.
from ipyrad.core.assembly import Assembly
from ipyrad.core.assembly import merge
from ipyrad.core.sample import Sample
from ipyrad.core.paramsinfo import paramsinfo


####################################################################
## create logger for debugging
## this needs to come after __loglevel__ definition
## sets log config and prints warning if __loglevel__ is in hackers mode
import logging as _logging
import logging.config as _lconfig

## clear the logfile if it is too big
if _os.path.exists(__debugfile__):
    if _os.path.getsize(__debugfile__) > 5000000:
        with open(__debugfile__, 'w') as clear:
            clear.write("file reset")


## check that all dependencies exist and are working
import subprocess as _subprocess
import sys as _sys


## Define the logger and test
_LOGGER = _logging.getLogger(__name__)
if __loglevel__ == "DEBUG":
    _LOGGER.debug("Engine launched: __loglevel__ = %s", __loglevel__)
else:
    _LOGGER.info("Engine launched: __loglevel__ = %s", __loglevel__)




def debug_on():
    """ 
    Turns on debugging by creating hidden tmp file 
    This is only run by the __main__ engine. 
    """
    ## make tmp file and set loglevel for top-level init
    with open(__debugflag__, 'w') as dfile:
        dfile.write("wat")
    __loglevel__ = "DEBUG"
    _LOGGER.info("debugging turned on and registered to be turned off at exit")
    _set_debug_dict(__loglevel__)


def _set_debug_dict(__loglevel__):
    """ set the debug dict """

    _lconfig.dictConfig({
    'version': 1,              
    'disable_existing_loggers': False,  

    'formatters': {
        'standard': {
            'format': "%(asctime)s \t"\
                     +"pid=%(process)d \t"\
                     +"[%(filename)s]\t"\
                     +"%(levelname)s \t"\
                     +"%(message)s"
        },
    },
    'handlers': {
        __name__: {
            'level':__loglevel__,
            'class':'logging.FileHandler',
            'filename':__debugfile__,
            'formatter':"standard",
            'mode':'a+'
        }
    },
    'loggers':{
        __name__: {
            'handlers': [__name__],
            'level': __loglevel__,
            'propogate': True
        }
    }
    })

_set_debug_dict(__loglevel__)



def debug_off():
    """ turns off debugging by removing hidden tmp file """
    if _os.path.exists(__debugflag__):
        _os.remove(__debugflag__)


def _cmd_exists(cmd):
    """ check if dependency program is there """
    return _subprocess.call("type " + cmd,
                           shell=True, 
                           stdout=_subprocess.PIPE,
                           stderr=_subprocess.PIPE) == 0



def _getbins():
    """ gets the right version of vsearch, muscle, and smalt
    depending on linux vs osx """

    # Return error if system is 32-bit arch.
    # This is straight from the python docs:
    # https://docs.python.org/2/library/platform.html#cross-platform
    if not _sys.maxsize > 2**32:
        _sys.exit("ipyrad requires 64bit architecture") 

    ## get platform mac or linux
    _platform = _sys.platform

    ## get current location
    path = _os.path.abspath(_os.path.dirname(__file__))

    ## find bin directory
    ipyrad_path = _os.path.dirname(path)
    bin_path = _os.path.join(ipyrad_path, "bin")

    ## get the correct binaries 
    if 'linux' in _platform:
        vsearch = _os.path.join(
                       _os.path.abspath(bin_path),
                       "vsearch-linux-x86_64")
        muscle = _os.path.join(
                       _os.path.abspath(bin_path),
                       "muscle-linux-x86_64")
        smalt = _os.path.join(
                       _os.path.abspath(bin_path),
                       "smalt-linux-x86_64")
        samtools = _os.path.join(
                       _os.path.abspath(bin_path),
                       "samtools-linux-x86_64")
        bedtools = _os.path.join(
                       _os.path.abspath(bin_path),
                       "bedtools-linux-x86_64")
        qmc = _os.path.join(
                       _os.path.abspath(bin_path),
                       "wQMC-linux-x86_64")
    else:
        vsearch = _os.path.join(
                       _os.path.abspath(bin_path),
                       "vsearch-osx-x86_64")
        muscle = _os.path.join(
                       _os.path.abspath(bin_path),
                       "muscle-osx-x86_64")
        smalt = _os.path.join(
                       _os.path.abspath(bin_path),
                       "smalt-osx-x86_64")
        samtools = _os.path.join(
                       _os.path.abspath(bin_path),
                       "samtools-osx-x86_64")
        bedtools = _os.path.join(
                       _os.path.abspath(bin_path),
                       "bedtools-osx-x86_64")
        ## only one compiled version available, works for all?
        qmc = _os.path.join(
                       _os.path.abspath(bin_path),
                       "wQMC-linux-x86_64")

    # Test for existence of binaries
    assert _cmd_exists(muscle), "muscle not found here: "+muscle
    assert _cmd_exists(vsearch), "vsearch not found here: "+vsearch
    assert _cmd_exists(smalt), "smalt not found here: "+smalt
    assert _cmd_exists(samtools), "samtools not found here: "+samtools
    assert _cmd_exists(bedtools), "bedtools not found here: "+bedtools
    #assert _cmd_exists(qmc), "wQMC not found here: "+qmc    
    return vsearch, muscle, smalt, samtools, bedtools, qmc


## create globals for binaries that can be accessed as: ipyrad.bins.muscle
bins = assemble.util.ObjDict()
binnames = ["vsearch", "muscle", "smalt", "samtools", "bedtools", "qmc"]
for binn, binx in zip(binnames, _getbins()):
    bins[binn] = binx
## clean up for the API
del binnames, binn, binx



if __name__ == "__main__":
    pass