#!/usr/bin/env python3

# include standard modules
import argparse
import os
import sys
import re
import json

mydir = os.path.dirname(os.path.realpath(__file__))

def commandline():
    # initiate the parser
    parser = argparse.ArgumentParser(description="Awesome tool to...")
    # option without argument via 'store_true'
    parser.add_argument("-V", "--version", help="show program version", action="store_true")
    # option with argument
    parser.add_argument("--width", "-w", help="set output width")
    parser.add_argument("--input", "-i", help="set input file")

    # read arguments from the command line
    args = parser.parse_args()

    # handle arguments
    # check for --version or -V
    if args.version:
        print("this is myprogram version 0.1")
    # check for --width
    if args.width:
        print("set output width to %s" % args.width)

    return args


def get_json(html):
    result = re.search(r'<script id="state" type="application/json">(?P<json>.*?)</script', html, re.MULTILINE)
    if result:
        data = json.loads(result.group("json"))
    else:
        print("Can't find the magic")
    return data

args = commandline()

with open(args.input, 'r') as content_file:
    content = content_file.read()

jsondata = get_json(content)

print( "Artist: " + jsondata["meta"]["artist"] )
print( "Title: " + jsondata["meta"]["title"] )
print( "Instrument: " + jsondata["data"]["part"]["instrument"] )
print( "BPM: " + str( jsondata["data"]["part"]["measures"][0]["voices"][0]["beats"][0]["tempo"]["bpm"] ) )

# Index:
# CC1 Crash Cymbal 1    { "string": 0, "fret": 49 }
# CC2 Crash Cymbal 2    { "string": 0, "fret": 57 }
# RC Ride Cymbal        { "string": 0, "fret": 51 }
# fH Foot Hi Hat        { "string": 0, "fret": 44 }

# HMT Hi-Mid Tom        { "string": 3, "fret": 48 }
# FT Floor Tom          { "string": 3, "fret": 43 }
# LMT Low-Mid Tom       { "string": 3, "fret": 47 }

# S Snare               { "string": 4, "fret": 38 }
# BD Bass Drum          { "string": 5, "fret": 35 }