"""
* Version: 0.1.0.0.0

* Purposes:
    * Rename all markdown files by order

* System parameters:
    * sys_parameter 1: chapter no
    * sys_parameter 2: lang_code
"""

import sys, os

if __name__ == '__main__':

    chapter_no = sys.argv[1]
    lang_code = sys.argv[2]
    course_folder_base = 'student-guide/view/'+lang_code
    chapter_folder = course_folder_base+'/chapter-'+chapter_no
    source_markdown_file_names = sorted(
        [chapter_folder + "/" + f for f in os.listdir(chapter_folder)]
        ,reverse=True
    )
    
    fname_list = [f for f in source_markdown_file_names if f.endswith('.md') and not '^' in f and not f.endswith('01title.md') and not f.endswith('99close.md')]
    count = len(fname_list) + 1
    temp_fname_list = []
    for f in fname_list:
        temp_fname=f.replace('.md','_2b_replaced_soon.md')
        print('Renaming',f,'to',temp_fname)
        os.rename(f,temp_fname)
        temp_fname_list += [temp_fname]
    for f in temp_fname_list:
        new_fname=chapter_folder+'/'+str(count).zfill(2)+'.md'
        print('Renaming',f,'to',new_fname)
        os.rename(f,new_fname)
        count -= 1