import re
import json

def syntax(): 
    '''regex setup for the flat syntax'''
    # titles
    t = re.compile('\(.*\)')
    # sections
    s = re.compile('\[(.*?)\]')
    # notes
    n = re.compile('(-->)')
    return (t, s, n)



def test_scan(file):
    with open(file, 'r') as f:
        t, s, n = syntax()

        # scan through the document
        line = f.readline()
        while line:
            if not line.rstrip('\n'):
                line=f.readline()
                continue
            if t.match(line):
                print(f"title: {line[1:-2]}")
                line = f.readline()
                continue
            if s.match(line):
                print(f'section: {line[1:-2]}')
                line = f.readline()
                continue
            if n.match(line):
                print(f'note: {line}')
                line = f.readline()
                continue
            print(f'text: {line}')
            line = f.readline()

def parse(file):
    with open(file, 'r') as f: 
        
        parsed = {}
        current_title = ''
        current_section = ''
        
        t, s, n = syntax()
        line = f.readline()

        while line:
            if not line.rstrip('\n'):
                line=f.readline()
                continue
            # titles
            if t.match(line):
                current_title = line[1:-2]
                parsed[current_title] = {}
                line = f.readline()
                continue
            # sections
            if s.match(line):
                current_section = line[1:-2]
                parsed[current_title][current_section]=''
                line = f.readline()
                continue
            # notes (TBD)
            if n.match(line):
                parsed[current_title][current_section]+=line.rstrip('\n') + ' \n'
                line = f.readline()
                continue
            # normal text
            parsed[current_title][current_section]+=line.rstrip('\n') + ' \n'
            line = f.readline()
        return json.dumps(parsed, indent=4)

print(parse('list.1dl'))