from html.parser import HTMLParser

class DivTracker(HTMLParser):
    def __init__(self):
        super().__init__()
        self.stack = []
        self.found = False
        
    def handle_starttag(self, tag, attrs):
        if tag == 'div':
            attrs_dict = dict(attrs)
            if attrs_dict.get('id') == 'tab-backtest':
                self.found = True
            
            if self.found:
                # store class and id for debugging
                cls = attrs_dict.get('class', '')
                id_ = attrs_dict.get('id', '')
                self.stack.append((self.getpos(), cls, id_))
                
    def handle_endtag(self, tag):
        if tag == 'div' and self.found:
            if self.stack:
                self.stack.pop()
                if len(self.stack) == 0:
                    self.found = False # End of tab-backtest

with open('templates/backtest.html', 'r', encoding='utf-8') as f:
    html = f.read()

tracker = DivTracker()
tracker.feed(html)
print("Unclosed divs inside tab-backtest:")
for item in tracker.stack:
    print(item)