"""
install.py: Installation of OpenCore files to ESP
"""

import logging
import plistlib
import subprocess
import applescript

from pathlib import Path

from .. import constants

from ..datasets import os_data
from ..utilities import utilities


class tui_disk_installation:
    def __init__(self, versions):
        self.constants: constants.Constants = versions

    def list_disks(self):
        all_disks = {}
        # TODO: AllDisksAndPartitions is not supported in Snow Leopard and older
        try:
            # High Sierra and newer
            disks = plistlib.loads(subprocess.run(["/usr/sbin/diskutil", "list", "-plist", "physical"], stdout=subprocess.PIPE).stdout.decode().strip().encode())
        except ValueError:
            # Sierra and older
            disks = plistlib.loads(subprocess.run(["/usr/sbin/diskutil", "list", "-plist"], stdout=subprocess.PIPE).stdout.decode().strip().encode())
        for disk in disks["AllDisksAndPartitions"]:
            disk_info = plistlib.loads(subprocess.run(["/usr/sbin/diskutil", "info", "-plist", disk["DeviceIdentifier"]], stdout=subprocess.PIPE).stdout.decode().strip().encode())
            try:
                all_disks[disk["DeviceIdentifier"]] = {"identifier": disk_info["DeviceNode"], "name": disk_info["MediaName"], "size": disk_info["TotalSize"], "partitions": {}}
                for partition in disk["Partitions"]:
                    partition_info = plistlib.loads(subprocess.run(["/usr/sbin/diskutil", "info", "-plist", partition["DeviceIdentifier"]], stdout=subprocess.PIPE).stdout.decode().strip().encode())
                    all_disks[disk["DeviceIdentifier"]]["partitions"][partition["DeviceIdentifier"]] = {
                        "fs": partition_info.get("FilesystemType", partition_info["Content"]),
                        "type": partition_info["Content"],
                        "name": partition_info.get("VolumeName", ""),
                        "size": partition_info["TotalSize"],
                    }
            except KeyError:
                # Avoid crashing with CDs installed
                continue

        supported_disks = {}
        for disk in all_disks:
            if not any(all_disks[disk]["partitions"][partition]["fs"] in ("msdos", "EFI") for partition in all_disks[disk]["partitions"]):
                continue
            supported_disks.update({
                disk: {
                    "disk": disk,
                    "name": all_disks[disk]["name"],
                    "size": utilities.human_fmt(all_disks[disk]['size']),
                    "partitions": all_disks[disk]["partitions"]
                }
            })
        return supported_disks

    def list_partitions(self, disk_response, supported_disks):
        # Takes disk UUID as well as diskutil dataset generated by list_disks
        # Returns list of FAT32 partitions
        disk_identifier = disk_response
        selected_disk = supported_disks[disk_identifier]

        supported_partitions = {}

        for partition in selected_disk["partitions"]:
            if selected_disk["partitions"][partition]["fs"] not in ("msdos", "EFI"):
                continue
            supported_partitions.update({
                partition: {
                    "partition": partition,
                    "name": selected_disk["partitions"][partition]["name"],
                    "size": utilities.human_fmt(selected_disk["partitions"][partition]["size"])
                }
            })
        return supported_partitions


    def _determine_sd_card(self, media_name: str):
        # Array filled with common SD Card names
        # Note most USB-based SD Card readers generally report as "Storage Device"
        # Thus no reliable way to detect further without parsing IOService output (kUSBProductString)
        if any(x in media_name for x in ("SD Card", "SD/MMC", "SDXC Reader", "SD Reader", "Card Reader")):
            return True
        return False


    def install_opencore(self, full_disk_identifier: str):
        # TODO: Apple Script fails in Yosemite(?) and older
        logging.info(f"Mounting partition: {full_disk_identifier}")
        if self.constants.detected_os >= os_data.os_data.el_capitan and not self.constants.recovery_status:
            try:
                applescript.AppleScript(f'''do shell script "diskutil mount {full_disk_identifier}" with prompt "OpenCore Legacy Patcher needs administrator privileges to mount this volume." with administrator privileges without altering line endings''').run()
            except applescript.ScriptError as e:
                if "User canceled" in str(e):
                    logging.info("Mount cancelled by user")
                    return
                logging.info(f"An error occurred: {e}")
                if utilities.check_boot_mode() == "safe_boot":
                    logging.info("\nSafe Mode detected. FAT32 is unsupported by macOS in this mode.")
                    logging.info("Please disable Safe Mode and try again.")
                    return
        else:
            result = subprocess.run(["/usr/sbin/diskutil", "mount", full_disk_identifier], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
            if result.returncode != 0:
                logging.info("Mount failed")
                logging.info(result.stderr.decode())
                return

        partition_info = plistlib.loads(subprocess.run(["/usr/sbin/diskutil", "info", "-plist", full_disk_identifier], stdout=subprocess.PIPE).stdout.decode().strip().encode())
        parent_disk = partition_info["ParentWholeDisk"]
        drive_host_info = plistlib.loads(subprocess.run(["/usr/sbin/diskutil", "info", "-plist", parent_disk], stdout=subprocess.PIPE).stdout.decode().strip().encode())
        sd_type = drive_host_info["MediaName"]
        try:
            ssd_type = drive_host_info["SolidState"]
        except KeyError:
            ssd_type = False
        mount_path = Path(partition_info["MountPoint"])
        disk_type = partition_info["BusProtocol"]

        if not mount_path.exists():
            logging.info("EFI failed to mount!")
            return False

        if (mount_path / Path("EFI/OC")).exists():
            logging.info("Removing preexisting EFI/OC folder")
            subprocess.run(["/bin/rm", "-rf", mount_path / Path("EFI/OC")], stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        if (mount_path / Path("System")).exists():
            logging.info("Removing preexisting System folder")
            subprocess.run(["/bin/rm", "-rf", mount_path / Path("System")], stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        if (mount_path / Path("boot.efi")).exists():
            logging.info("Removing preexisting boot.efi")
            subprocess.run(["/bin/rm", mount_path / Path("boot.efi")], stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        logging.info("Copying OpenCore onto EFI partition")
        subprocess.run(["/bin/mkdir", "-p", mount_path / Path("EFI")], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        subprocess.run(["/bin/cp", "-r", self.constants.opencore_release_folder / Path("EFI/OC"), mount_path / Path("EFI/OC")], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        subprocess.run(["/bin/cp", "-r", self.constants.opencore_release_folder / Path("System"), mount_path / Path("System")], stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        if Path(self.constants.opencore_release_folder / Path("boot.efi")).exists():
            subprocess.run(["/bin/cp", self.constants.opencore_release_folder / Path("boot.efi"), mount_path / Path("boot.efi")], stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        if self.constants.boot_efi is True:
            logging.info("Converting Bootstrap to BOOTx64.efi")
            if (mount_path / Path("EFI/BOOT")).exists():
                subprocess.run(["/bin/rm", "-rf", mount_path / Path("EFI/BOOT")], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
            Path(mount_path / Path("EFI/BOOT")).mkdir()
            subprocess.run(["/bin/mv", mount_path / Path("System/Library/CoreServices/boot.efi"), mount_path / Path("EFI/BOOT/BOOTx64.efi")], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
            subprocess.run(["/bin/rm", "-rf", mount_path / Path("System")], stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        if self._determine_sd_card(sd_type) is True:
            logging.info("Adding SD Card icon")
            subprocess.run(["/bin/cp", self.constants.icon_path_sd, mount_path], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        elif ssd_type is True:
            logging.info("Adding SSD icon")
            subprocess.run(["/bin/cp", self.constants.icon_path_ssd, mount_path], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        elif disk_type == "USB":
            logging.info("Adding External USB Drive icon")
            subprocess.run(["/bin/cp", self.constants.icon_path_external, mount_path], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        else:
            logging.info("Adding Internal Drive icon")
            subprocess.run(["/bin/cp", self.constants.icon_path_internal, mount_path], stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        logging.info("Cleaning install location")
        if not self.constants.recovery_status:
            logging.info("Unmounting EFI partition")
            subprocess.run(["/usr/sbin/diskutil", "umount", mount_path], stdout=subprocess.PIPE).stdout.decode().strip().encode()

        logging.info("OpenCore transfer complete")

        return True