from typing import List
import pefile


class PeSection():
    def __init__(self, pefile_section: pefile.SectionStructure):
        self.name: str = pefile_section.Name.rstrip(b'\x00').decode("utf-8")
        self.raw_addr: int = pefile_section.PointerToRawData
        self.raw_size: int = pefile_section.SizeOfRawData
        self.virt_addr: int = pefile_section.VirtualAddress
        self.virt_size: int = pefile_section.Misc_VirtualSize
        #self.permissions = pefile_section.Characteristics


class SuperPe():
    """Interact with a PE file using pefile"""

    def __init__(self, pe: pefile.PE):
        self.pe: pefile.PE = pe
        self.pe_sections: List[PeSection] = []


    def init(self):
        for section in self.pe.sections:
            self.pe_sections.append(PeSection(section))


    def get_section_by_name(self, name: str) -> PeSection:
        for section in self.pe_sections:
            if section.name == name:
                return section
        return None
    

    def get_physical_address(self, virtual_address):
        # Iterate through the section headers to find which section contains the VA
        for section in self.pe.sections:
            # Check if the VA is within the range of this section
            if section.VirtualAddress <= virtual_address < section.VirtualAddress + section.Misc_VirtualSize:
                # Calculate the difference between the VA and the section's virtual address
                virtual_offset = virtual_address - section.VirtualAddress
                # Add the difference to the section's pointer to raw data
                return virtual_offset
                #physical_address = section.PointerToRawData + virtual_offset
                #return physical_address
        return None