#! /usr/bin/python
#
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import PlotPowerStates as plotter
import argparse
import os
from subprocess import call

parser = argparse.ArgumentParser(formatter_class=
                                 argparse.ArgumentDefaultsHelpFormatter)

parser.add_argument("--statsfile", required=True, help="stats file path")

parser.add_argument("--bankutils", default="b1 b2 b3", help="target bank " \
                    "utilization values separated by space, e.g. \"1 4 8\"")

parser.add_argument("--seqbytes", default="s1 s2 s3", help="no. of " \
                    "sequential bytes requested by each traffic gen request." \
                    " e.g. \"64 256 512\"")

parser.add_argument("--delays", default="d1 d2 d3", help="string of delay"
                    " values separated by a space. e.g. \"1 20 100\"")

parser.add_argument("--outdir", help="directory to output plots",
                    default='plot_test')

parser.add_argument("--pdf", action='store_true', help="output Latex and pdf")

def main():
    args = parser.parse_args()
    if not os.path.isfile(args.statsfile):
        exit('Error! File not found: %s' % args.statsfile)
    if not os.path.isdir(args.outdir):
        os.mkdir(args.outdir)

    bank_util_list = args.bankutils.strip().split()
    seqbyte_list = args.seqbytes.strip().split()
    delays = args.delays.strip().split()
    plotter.plotLowPStates(args.outdir + '/', args.statsfile, bank_util_list,
                           seqbyte_list, delays)

    if args.pdf:
        textwidth = '0.5'

        ### Time and energy plots ###
        #############################
        # place tex and pdf files in outdir
        os.chdir(args.outdir)
        texfile_s = 'stacked_lowp_sweep.tex'
        print "\t", texfile_s
        outfile = open(texfile_s, 'w')

        startDocText(outfile)
        outfile.write("\\begin{figure} \n\centering\n")
        ## Time plots for all delay values
        for delay in delays:
            # Time
            filename = plotter.stateTimePlotName(str(delay) + '-')
            outfile.write(wrapForGraphic(filename, textwidth))
            outfile.write(getCaption(delay))
        outfile.write("\end{figure}\n")

        # Energy plots for all delay values
        outfile.write("\\begin{figure} \n\centering\n")
        for delay in delays:
            # Energy
            filename = plotter.stateEnergyPlotName(str(delay) + '-')
            outfile.write(wrapForGraphic(filename, textwidth))
            outfile.write(getCaption(delay))
        outfile.write("\end{figure}\n")

        endDocText(outfile)
        outfile.close()

        print "\n Generating pdf file"
        print "*******************************"
        print "\tpdflatex ", texfile_s
        # Run pdflatex to generate to pdf
        call(["pdflatex", texfile_s])
        call(["open", texfile_s.split('.')[0] + '.pdf'])


def getCaption(delay):
    return ('\caption{' +
            'itt delay = ' + str(delay) +
            '}\n')

def wrapForGraphic(filename, width='1.0'):
    # \t is tab and needs to be escaped, therefore \\textwidth
    return '\includegraphics[width=' + width + \
        '\\textwidth]{' + filename + '}\n'

def startDocText(outfile):

    start_stuff = '''
\documentclass[a4paper,landscape,twocolumn]{article}

\usepackage{graphicx}
\usepackage[margin=0.5cm]{geometry}
\\begin{document}
'''
    outfile.write(start_stuff)

def endDocText(outfile):

    end_stuff = '''

\end{document}

'''
    outfile.write(end_stuff)

# Call main
if __name__ == '__main__':
    main()