import requests
import os
import sys
import tempfile
import tarfile

from rich.console import Console
from rich.progress import SpinnerColumn


console = Console()


def install(args):
    # check if we are sudo
    if os.getuid() != 0:
        console.print("[b red]digpkg: the install command requires sudo to run[/]")
        sys.exit(1)
    
    # ensure the GROUND_LIBS var is set
    if not os.getenv("GROUND_LIBS"):
        console.print("digpkg: the [i]GROUND_LIBS[/] environment variable is not set, defaulting to /usr/lib/ground/")
        os.environ["GROUND_LIBS"] = "/usr/lib/ground/"
    
    # figure out which version to install
    package_name = args.name
    version = "latest"
    if "@" in args.name:
        split = package_name.split("@")
        package_name = split[0]
        version = split[1]
    
    retries_left = args.max_retries
    
    with console.status("Downloading tarball...", spinner="bouncingBall", spinner_style="blue") as status:
        while retries_left > 0:
            # grab the tar ball
            response = requests.get(f"https://chookspace.com/api/packages/ground/generic/{package_name}/{version}/mineral.tar")
            
            # check response code for errors
            if response.status_code == 404: # package doesn't exist
                console.print(f"[b red]digpkg: mineral \"{package_name}\" was not found. Check to make sure the name and version number are correct.[/]")
                sys.exit(1)
            elif response.status_code != 200:
                retries_left -= 1
                console.print(f"[b yellow]digpkg: failed to download mineral \"{package_name}\": {response.content.decode()} ({retries_left} retries left)[/]")
                
                if retries_left == 0:
                    console.print(f"[b red]digpkg: exceeded max retries while downloading mineral \"{package_name}\"[/]")
                    sys.exit(1)
                
                continue
            
            response.raise_for_status()
            
            break
        
        # create temporary file for tarball
        try:
            f = tempfile.TemporaryFile("wb+") 
            f.write(response.content)
            f.flush()
            f.seek(0)
            console.print("[d][:white_check_mark:] Tarball downloaded![/]")
        except KeyboardInterrupt:
            console.print("[b yellow]digpkg: operation cancelled by user[/]")
            return
        
        # extract the tarball to the GROUND_LIBS folder
        status.update("Extracting...")
        
        extract_dir = os.getenv("GROUND_LIBS")
        if not os.path.isdir(extract_dir): # gotta ensure the folder exists
            os.mkdir(extract_dir)
        
        
        tar_file = tarfile.open(fileobj=f)
        tar_file.extractall(extract_dir)
        f.close()
        
        console.print(f"[d][:white_check_mark:] Extracted to {extract_dir}.")