from __future__ import annotations

from range import Range


class Structure:
    def __init__(self,
                 name: str,
                 bits: int,
                 ranges: dict[str, Range],
                 start: int = 0) -> None:
        
        self.name = name
        self.bits = bits
        self.ranges = ranges
        self.start = start
    
    def load(id_: str, data: dict) -> Structure:
        ranges = {}
        for rSpan, rData in data["ranges"].items():
            rStart, rEnd = Range.parseSpan(str(rSpan))
            ranges[(rStart, rEnd)] = Range.load(rStart, rEnd, rData)
        
        for range_ in ranges.values():
            if range_.values is not None and range_.dependsOn is not None:
                bits = ranges[range_.dependsOn].bits
                values = {}
                for v, d in range_.values.items():
                    v = str(int(v)).zfill(bits)
                    values[v] = d
                range_.values = values
        
        return Structure(id_, int(data["bits"]), ranges, data.get("start", 0))

    def getSortedRanges(self) -> list[Range]:
        ranges = self.ranges.values()
        return list(sorted(ranges, key=lambda r: r.end))