from os.path import dirname
from os import environ
from pathlib import Path
import subprocess
from socket import gethostname
import colors

def format_link(link: str, text: str) -> str:
    return f"\033]8;;{link}\033\\{text}\033]8;;\033\\"

def run(cmd: list[str], cwd: Path = Path.cwd(), exit_on_error: bool = True, **kwargs) -> subprocess.CompletedProcess:
    c = colors.Colors
    print(f"{c.GREEN}Running command: {c.PURPLE}'{' '.join(cmd)}'{c.END}")
    if cwd != Path.cwd():
        print(f"{c.GREEN} 󱞩 in directory: {c.YELLOW}'{format_link(link="file://" + str(cwd), text=cwd)}'{c.END}")
    result = subprocess.run(cmd, cwd=cwd, check=False, **kwargs)
    if result.returncode != 0:
        print(f"{c.RED}Command exited with non-zero exit code {c.CYAN}{c.BOLD}{result.returncode}{c.END}")
        if exit_on_error is True:
            result.check_returncode()
    else:
        print(f"{c.GREEN}Command exited with exit code {c.CYAN}{c.BOLD}{result.returncode}{c.END}")
    return result

@aliases.register
@aliases.return_command
def _sudo(args):
    return ["sudo", "--", *aliases.eval_alias(args)]

@aliases.register
def _vm(args):
    if not args:
        args = ["nixpkgs"]
    vm_name = args.pop(0)
    build_vm_args = args
    if vm_name == "nixpkgs":
        build_vm_args.extend(["-I", "nixpkgs=/bulk/home/cswimr/Projects/nixpkgs"])
    vm_path = Path(f"/etc/nixos/hosts/virtual-machines/{vm_name}")
    if vm_path.exists():
        c = colors.Colors
        print(f"{c.BLUE}Building virtual machine {c.YELLOW}{vm_name}{c.END}")
        run(["nixos-rebuild", "build-vm", "-I", "nixos-config=./default.nix", *build_vm_args, "--no-flake"], cwd=vm_path)
        print(f"{c.BLUE}Starting virtual vachine {c.YELLOW}{vm_name}{c.END}")
        run(["./result/bin/run-nixos-vm"], cwd=vm_path)
        print(f"{c.BLUE}Virtual machine {c.YELLOW}{vm_name} {c.BLUE}has {c.RED}stopped.{c.END}")
    else:
        raise FileNotFoundError(f"Virtual machine {vm_name} does not exist.")

@aliases.register
def _upd(args: list):
    path = Path("/etc/nixos")
    if path.exists():
        c = colors.Colors
        files_to_delete = {
            "Visual Studio Code user settings": ".config/Code/User/settings.json.bak",
            "fontconfig": ".config/fontconfig/conf.d/10-hm-fonts.conf.bak"
        }
        print(f"{c.BLUE}Updating {c.YELLOW}NixOS{c.BLUE} hardware configuration file for {c.YELLOW}{gethostname()}{c.BLUE}{c.END}")
        run(["sudo", "nixos-generate-config", "--dir", ".",], cwd=path / "hosts")
        print(f"{c.BLUE}Deleting redundant {c.YELLOW}NixOS{c.BLUE} configuration file{c.END}")
        run(["sudo", "rm", "configuration.nix"], cwd=path / "hosts")
        print(f"{c.BLUE}Moving {c.YELLOW}NixOS{c.BLUE} hardware configuration file{c.END}")
        run(["sudo", "mv", "hardware-configuration.nix", "{hostname}.nix".format(hostname=gethostname())], cwd=path / "hosts")
        print(f"{c.BLUE}Adding {c.YELLOW}NixOS{c.BLUE} hardware configuration file for {c.YELLOW}{gethostname()}{c.BLUE} to git{c.END}")
        run(["git", "add", "hosts/{hostname}.nix".format(hostname=gethostname())], cwd=path)
        for file_description, file_path in files_to_delete.items():
            print(f"{c.BLUE}Deleting {c.YELLOW}{file_description}{c.BLUE} backup file{c.END}")
            run(["rm", file_path], exit_on_error=False, cwd="/home/cswimr")
        if "--purge-vscode-extensions" in args:
            args.remove("--purge-vscode-extensions")
            print(f"{c.BLUE}Killing {c.YELLOW}Visual Studio Code{c.BLUE} processes{c.END}")
            run(["killall", "code"], exit_on_error=False)
            print(f"{c.BLUE}Purging {c.YELLOW}Visual Studio Code{c.BLUE} extensions{c.END}")
            run(["rm", "-rf", ".vscode/extensions"], cwd="/home/cswimr")
        print(f"{c.BLUE}Rebuilding {c.YELLOW}NixOS{c.BLUE} configuration{c.END}")
        #TODO: Remove --impure once the Starship module is merged - see ../../nixos/shell.nix for more information
        args.append("--impure")
        if "--impure" in args:
            print(f"{c.RED}WARNING: The --impure flag is set!{c.END}")
        run(["sudo", "nixos-rebuild", "switch", *args], cwd=path)

@aliases.register
def _lock(args):
    path = Path("/etc/nixos")
    if path.exists():
        c = colors.Colors
        print(f"{c.BLUE}Updating {c.YELLOW}Nix Flake{c.BLUE} lock file{c.END}")
        run(["nix", "flake", "update", *args], cwd=path)

@aliases.register
@aliases.return_command
def _edit(args):
    if not args:
        args = ["."]
    if environ.get("SSH_CONNECTION") is not None:
        return ["$EDITOR", *args]
    return ["$VISUAL", *args]


alias_dictionary = {
    "ff": "fastfetch",
    "neofetch": "fastfetch",
    "nf": "fastfetch",

    "lg": "lazygit",
    "lad": "lazydocker",

    "clip": "clp",
    "paste": "wl-paste",

    "cat": "bat",
    "git": "hub",

    "l": "eza -lhg --time-style=long-iso --icons=auto --hyperlink",
    "la": "eza -lAh --time-style=long-iso --icons=auto --hyperlink",
    "ll": "eza -lhg --time-style=long-iso --icons=auto --hyperlink",
    "ls": "eza --time-style=long-iso --icons=auto --hyperlink",
    "lsa": "eza -lah --time-style=long-iso --icons=auto --hyperlink",
    "tree": "eza --tree --git-ignore --time-style=long-iso --icons=auto --hyperlink",

    "create-devenv": "nix flake init --template github:cachix/devenv and direnv allow",
    "dev": "nix develop --no-pure-eval",
    "nixpkgs-update": "nix run --option extra-substituters 'https://nix-community.cachix.org/' --option extra-trusted-public-keys 'nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs=' github:ryantm/nixpkgs-update --",
    "nixrc": "edit /etc/nixos",

    "taildrop": "tailscale file",

    "forgejo-runner": "act_runner",
    "runactions": "act_runner exec --default-actions-url=https://www.coastalcommits.com --gitea-instance=https://www.coastalcommits.com",

    "e": "edit",
    "c": "clear",
    "s": "sudo",
}

# Create aliases for scripts with the file extension stripped
script_path = Path("/etc/nixos/scripts")
if script_path.exists():
    for sub_dir in script_path.iterdir():
        # ignore files within the nix subdirectory, since they are just nix-shell expressions
        # if you aren't using nix, you can remove this if statement
        if sub_dir.name == "nix":
            continue
        if not sub_dir.is_dir():
            print(f"{colors.Colors.YELLOW}{colors.Colors.BOLD}WARNING: The path {colors.Colors.PURPLE}'{sub_dir}'{colors.Colors.YELLOW} is not a directory. Skipping alias creation for this path.{colors.Colors.END}")
            continue

        extension = f".{sub_dir.name}"

        for script in sub_dir.glob(f"*{extension}"):
            if script.name == "__init__.py":
                continue

            script_name = script.stem
            aliases[script_name] = [str(script)]

aliases.update(alias_dictionary)