from typing import List, Protocol, Tuple, Union

def MakeAttrs(css:str|Tuple[str, ...]|None, id:str|None, attributes: dict[str, str | None] = {}) -> str:
    if css:
        attributes['class'] = " ".join(css) if isinstance(css, (list, tuple)) else css
    if id:
        attributes['id'] = id
    attrList: List[str] = []
    for key, value in attributes.items():
        if value:
            attrList.append(f'{key}="{value}"')
    return " ".join(attrList)

class ComplexProxyLeaf(dict):
    name:str = ""
    attrs:str = ""
    def __init__(self, name:str):
        self.name = name
    def __call__(self, css:str|None = None, id:str|None = None):
        self.attrs = MakeAttrs(css, id)
        return self
    def __repr__(self) -> str:
        return f'<{self.name} {self.attrs}/>'

class ComplexProxyBranch(ComplexProxyLeaf):
    name:str = ""
    attrs:str = ""
    def __init__(self, name:str):
        self.name = name
    def __call__(self, css:str|None = None, id:str|None = None):
        self.attrs = MakeAttrs(css, id)
        return self
    def __repr__(self) -> str:
        return f'<{self.name} {self.attrs}></{self.name}>'
    def __getitem__(self, key:Union[str, 'ComplexProxyBranch', ComplexProxyLeaf, Tuple[Union[str, 'ComplexProxyBranch', ComplexProxyLeaf], ...]]) -> str:
        if isinstance(key, tuple):
            children = "".join(str(k) for k in key)
        else:
            children = key
        return f'<{self.name} {self.attrs}>{children}</{self.name}>'
    
IMG = ComplexProxyLeaf("img")
BR = ComplexProxyLeaf("br")
A = ComplexProxyBranch("a")

print(
    A
    [
        "click here",
        BR,
        A(css="www.site.com")
        [
            IMG(id="image.png")
        ]
    ]
)