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//! Configuration file support for the CVKG CLI.
//!
//! Reads settings from `.cvkg.toml` (or paths specified by `CVKG_CONFIG` env var)
//! and merges them with CLI flags (CLI > env > file).
use serde::Deserialize;
use std::path::PathBuf;
use tracing::{info, warn};
/// CLI configuration that can be set via config file, env vars, or CLI flags.
#[derive(Debug, Default, Deserialize)]
pub struct CliConfig {
/// Default target platform.
pub target: Option<String>,
/// Default dev server port.
pub port: Option<u16>,
/// Default asset directory.
pub assets_dir: Option<String>,
/// Default output directory for builds.
pub dist_dir: Option<String>,
/// Enable inspector by default.
pub inspector: Option<bool>,
/// Respect reduced-motion preference.
pub reduced_motion: Option<bool>,
}
impl CliConfig {
/// Load configuration from `.cvkg.toml` in the current directory,
/// or from the path specified by `CVKG_CONFIG` env var.
pub fn load() -> Self {
let config_path = std::env::var("CVKG_CONFIG")
.map(PathBuf::from)
.unwrap_or_else(|_| PathBuf::from(".cvkg.toml"));
if !config_path.exists() {
return Self::default();
}
match std::fs::read_to_string(&config_path) {
Ok(content) => match toml::from_str::<CliConfig>(&content) {
Ok(config) => {
info!("Loaded config from {:?}", config_path);
config
}
Err(e) => {
warn!("Failed to parse {:?}: {}", config_path, e);
Self::default()
}
},
Err(e) => {
warn!("Failed to read {:?}: {}", config_path, e);
Self::default()
}
}
}
/// Merge CLI flags into config. CLI flags take precedence over config file values.
pub fn merge_cli(
&mut self,
target: Option<String>,
port: Option<u16>,
inspector: bool,
reduced_motion: bool,
) {
if target.is_some() {
self.target = target;
}
if port.is_some() {
self.port = port;
}
// Inspector and reduced_motion are boolean flags — CLI always overrides
self.inspector = Some(inspector);
self.reduced_motion = Some(reduced_motion);
}
}