from typing import Dict, Optional, List, Any, Tuple, override
from MaMa import MaMa

class MaMaMa(MaMa):
    def __init__(self, prog, stack=None) -> None:
        # Store macros
        self.macros: Dict[str, Dict[str, Any]] = {}
        self.initial_macros: Dict[str, Dict[str, Any]] = {}

        # Trace nested macros
        self._macro_trace: Dict[int, List[str]] = {}
        super().__init__(prog, stack)

    # Register a new macro, which is a name and a sequence of micros
    def add_macro(self, name: str, prog: List[str] | Dict[int, str], args: List[str] = None) -> None:
        if isinstance(prog, list):
            prog = {i: instr for i, instr in enumerate(prog)}
        self.macros[name] = {"prog": prog, "args": args}
        self.initial_macros[name] = dict(self.macros[name])

    # Automatically flatten macros and then execute
    @override
    def run(self, max_steps: int = 1000):
        self.__flatten_macro()
        return super().run(max_steps)

    # Flatten macros recursively
    def __flatten_macro(self) -> None:
        def expand(prog: Dict[int, str], stack: List[str]) -> List[Tuple[str, List[str]]]:
            out: List[Tuple[str, List[str]]] = []
            for _, micro in sorted(prog.items()):
                name, args = self.decode(micro)
                if name in self.macros:
                    out.extend(expand(self.macros[name]["prog"], stack + [name]))
                else:
                    out.append((micro, list(stack)))
            return out

        expanded = expand(self.prog, [])
        self.prog = {i: call for i, (call, _) in enumerate(expanded)}
        self._macro_trace = {i: macros for i, (_, macros) in enumerate(expanded)}

    # Add macros to structure
    @override
    def structure(self) -> Dict[int, Dict[str, Any]]:
        return {
            i: {"micro": micro, "macros": self._macro_trace.get(i, []), "p_prog": self.p_prog}
            for i, micro in sorted(self.prog.items())
        }