from Scripts import resource_fetcher
from Scripts import github
from Scripts import run
from Scripts import utils
import os
import tempfile
import shutil

class Updater:
    def __init__(self):
        self.github = github.Github()
        self.fetcher = resource_fetcher.ResourceFetcher({
            "Accept": "application/vnd.github+json",
            "X-GitHub-Api-Version": "2022-11-28",
        })
        self.run = run.Run().run
        self.utils = utils.Utils()
        self.sha_version = os.path.join(os.path.dirname(os.path.realpath(__file__)), "sha_version.json")
        self.download_repo_url = "https://github.com/lzhoang2801/OpCore-Simplify/archive/refs/heads/main.zip"
        self.temporary_dir = tempfile.mkdtemp()

    def get_current_sha_version(self):
        sha_version_data = self.utils.read_file(self.sha_version)

        if not sha_version_data or not isinstance(sha_version_data, dict):
            print("SHA version information is missing in the commit_sha.json file.\n")
            return "0506fb67111d5c5230bf59b826c318ea4251dfc4"

        return sha_version_data.get("sha_version", "0506fb67111d5c5230bf59b826c318ea4251dfc4")

    def get_latest_sha_version(self):
        latest_commit = self.github.get_latest_commit("lzhoang2801", "OpCore-Simplify")

        return latest_commit.get("sha") or "0506fb67111d5c5230bf59b826c318ea4251dfc4"

    def download_update(self):
        self.utils.create_folder(self.temporary_dir)
        file_path = os.path.join(self.temporary_dir, os.path.basename(self.download_repo_url))
        self.fetcher.download_and_save_file(self.download_repo_url, file_path)
        self.utils.extract_zip_file(file_path)

    def update_files(self):
        target_dir = os.path.join(self.temporary_dir, "main", "OpCore-Simplify-main")
        for root, dirs, files in os.walk(target_dir):
            for file in files:
                source = os.path.join(root, file)
                destination = source.replace(target_dir, os.path.dirname(os.path.realpath(__file__)))
                shutil.move(source, destination)
                if ".command" in os.path.splitext(file)[-1] and os.name != "nt":
                    self.run({
                        "args":["chmod", "+x", destination]
                    })
        shutil.rmtree(self.temporary_dir)

    def save_latest_sha_version(self, latest_sha):
        sha_version_info = {
            "sha_version": latest_sha
        }

        self.utils.write_file(self.sha_version, sha_version_info)

    def run_update(self):
        self.utils.head("Check for update")
        print("")
        current_sha_version = self.get_current_sha_version()
        latest_sha_version = self.get_latest_sha_version()
        print("Current script SHA version: {}".format(current_sha_version))
        print("Latest script SHA version: {}".format(latest_sha_version))
        print("")
        if latest_sha_version != current_sha_version:
            print("Updating from version {} to {}\n".format(current_sha_version, latest_sha_version))
            self.download_update()
            self.update_files()
            self.save_latest_sha_version(latest_sha_version)
            print("\n\n{}\n".format(self.utils.message("The program needs to restart to complete the update process.", "reminder")))
            return True
        else:
            print("You are already using the latest version")
            return False