"""
Minimalist updater script. Prompts user for the tag or branch to update to and runs
pip install <path_to_git_source>.
"""
import os
import platform
import pkg_resources
import psutil
import requests
from rich import box, print
from rich.console import Console, group
from rich.panel import Panel
from rich.prompt import Prompt
from rich.style import Style

from invokeai.version import __version__

INVOKE_AI_SRC = "https://github.com/invoke-ai/InvokeAI/archive"
INVOKE_AI_TAG = "https://github.com/invoke-ai/InvokeAI/archive/refs/tags"
INVOKE_AI_BRANCH = "https://github.com/invoke-ai/InvokeAI/archive/refs/heads"
INVOKE_AI_REL = "https://api.github.com/repos/invoke-ai/InvokeAI/releases"

OS = platform.uname().system
ARCH = platform.uname().machine

if OS == "Windows":
    # Windows terminals look better without a background colour
    console = Console(style=Style(color="grey74"))
else:
    console = Console(style=Style(color="grey74", bgcolor="grey19"))


def get_versions() -> dict:
    return requests.get(url=INVOKE_AI_REL).json()


def invokeai_is_running() -> bool:
    for p in psutil.process_iter():
        try:
            cmdline = p.cmdline()
            matches = [x for x in cmdline if x.endswith(("invokeai", "invokeai.exe"))]
            if matches:
                print(
                    f":exclamation: [bold red]An InvokeAI instance appears to be running as process {p.pid}[/red bold]"
                )
                return True
        except (psutil.AccessDenied, psutil.NoSuchProcess):
            continue
    return False


def welcome(versions: dict):
    @group()
    def text():
        yield f"InvokeAI Version: [bold yellow]{__version__}"
        yield ""
        yield "This script will update InvokeAI to the latest release, or to a development version of your choice."
        yield ""
        yield "[bold yellow]Options:"
        yield f"""[1] Update to the latest official release ([italic]{versions[0]['tag_name']}[/italic])
[2] Update to the bleeding-edge development version ([italic]main[/italic])
[3] Manually enter the [bold]tag name[/bold] for the version you wish to update to
[4] Manually enter the [bold]branch name[/bold] for the version you wish to update to"""

    console.rule()
    print(
        Panel(
            title="[bold wheat1]InvokeAI Updater",
            renderable=text(),
            box=box.DOUBLE,
            expand=True,
            padding=(1, 2),
            style=Style(bgcolor="grey23", color="orange1"),
            subtitle=f"[bold grey39]{OS}-{ARCH}",
        )
    )
    console.line()


def get_extras():
    extras = ""
    try:
        _ = pkg_resources.get_distribution("xformers")
        extras = "[xformers]"
    except pkg_resources.DistributionNotFound:
        pass
    return extras


def main():
    versions = get_versions()
    if invokeai_is_running():
        print(":exclamation: [bold red]Please terminate all running instances of InvokeAI before updating.[/red bold]")
        input("Press any key to continue...")
        return

    welcome(versions)

    tag = None
    branch = None
    release = None
    choice = Prompt.ask("Choice:", choices=["1", "2", "3", "4"], default="1")

    if choice == "1":
        release = versions[0]["tag_name"]
    elif choice == "2":
        release = "main"
    elif choice == "3":
        tag = Prompt.ask("Enter an InvokeAI tag name")
    elif choice == "4":
        branch = Prompt.ask("Enter an InvokeAI branch name")

    extras = get_extras()

    print(f":crossed_fingers: Upgrading to [yellow]{tag or release or branch}[/yellow]")
    if release:
        cmd = f'pip install "invokeai{extras} @ {INVOKE_AI_SRC}/{release}.zip" --use-pep517 --upgrade'
    elif tag:
        cmd = f'pip install "invokeai{extras} @ {INVOKE_AI_TAG}/{tag}.zip" --use-pep517 --upgrade'
    else:
        cmd = f'pip install "invokeai{extras} @ {INVOKE_AI_BRANCH}/{branch}.zip" --use-pep517 --upgrade'
    print("")
    print("")
    if os.system(cmd) == 0:
        print(":heavy_check_mark: Upgrade successful")
    else:
        print(":exclamation: [bold red]Upgrade failed[/red bold]")


if __name__ == "__main__":
    try:
        main()
    except KeyboardInterrupt:
        pass