// nixos-config - My current NixOS configuration
//
// Copyright (C) 2025 Benedikt Peetz <benedikt.peetz@b-peetz.de>
// SPDX-License-Identifier: GPL-3.0-or-later
//
// This file is part of my nixos-config.
//
// You should have received a copy of the License along with this program.
// If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.

use std::fs;

use anyhow::Context;
use clap::Parser;

pub mod cli;
pub mod key_map;
pub mod wayland;

use crate::{cli::Args, key_map::KeyMap};

fn main() -> Result<(), anyhow::Error> {
    let args = Args::parse();

    let keymap_path = &args.keymap.canonicalize().with_context(|| {
        format!(
            "Failed to canonicalize kepmay path: '{}'",
            args.keymap.display()
        )
    })?;

    let config = {
        let keymap_file = fs::read_to_string(keymap_path).with_context(|| {
            format!(
                "Failed to open keymap file at: '{}'.",
                keymap_path.display()
            )
        })?;

        let keymap: KeyMap = keymap_file.parse().with_context(|| {
            format!("Failed to parse keymap file at: {}", keymap_path.display())
        })?;

        keymap
    };

    match args.command {
        cli::SubCommand::Init { dry_run } => {
            println!("{config}");
            for mut command in config.to_commands(keymap_path)? {
                if dry_run {
                    println!("{command:?}");
                } else {
                    let status = command
                        .status()
                        .with_context(|| format!("Failed to run command: '{command:?}'"))?;

                    if !status.success() {
                        eprintln!(
                            "Command ('{command:?}') returned with non zero exit code: {status}"
                        );
                    }
                }
            }
        }
        cli::SubCommand::ShowHelp {} => wayland::main(config)?,
    }

    Ok(())
}