#!/usr/bin/env python3
import os

def generate_ly(title=None, scores=None, copy=False, root=None):
    """Generate a new lilypond file containing all entries from scores, if copy is False, they will be 'linked'"""

    # Find title
    if title is not None:
        title = "\\header {\n\ttitle = \""+ title + "\"\n}\n"
    else:
        title = ""


    # Content of scores
    scorestext = ""
    for item in scores:
        if item.startswith('std'):
            continue

        # item is always relative
        if root is not None:
            item = os.path.join(root, item)

        if not os.path.exists(item):
            continue

        if copy is True:
            with open(item, 'r') as f:
                for line in f:        
                    if line.startswith('\\include'):
                        incline = line.replace('\\include', '').strip('"\' ')
                        
                        if os.path.isabs(incline): #already absolute
                            incline = os.path.join(os.path.abspath(os.path.dirname(item)), incline)
                        
                        line = "\\include \""+incline+"\""
                scorestext += line.replace('\r', '')+'\n'
        else:
                scorestext += '\\include \"' + os.path.join( os.path.abspath( os.curdir ) ,item) + '\"\n'


    ## Output
    if scorestext == "":
        return False


    return """\\version \"2.19.65\"

"""+ title + """
\\paper {
    #(define page-breaking ly:minimal-breaking)
}

%% Scores
""" + scorestext


if __name__ == "__main__":
    from argparse import ArgumentParser
    parser = ArgumentParser(__file__)
    parser.add_argument('-c', dest='copy', action='store_true', default=False, help="Copy files instead of just linkingi")
    parser.add_argument('-t', dest='title', default=None, help="Title for the set")
    parser.add_argument('scores', nargs='+')
    
    args = parser.parse_args()

    print(generate_ly(args.title, args.scores, args.copy))