//! Daemon-local config (`bento-daemon.toml`) — paths and listen address that
//! belong to the machine bentod runs on, not to the build matrix (which lives
//! in the separate topology file, see [`crate::topology`]).

use anyhow::{Context, Result};
use serde::Deserialize;
use std::path::PathBuf;

#[derive(Debug, Clone, Deserialize)]
pub struct Config {
    pub listen: String,
    pub db_path: PathBuf,
    pub topology_path: PathBuf,
    /// Root of the Syncthing private layer (`~/Code/_private`); the `secret()`
    /// host function reads credential files relative to here. Never logged.
    pub secrets_root: PathBuf,
    /// Where collected artifacts land (`<dist_root>/<app>/<version>/`).
    pub dist_root: PathBuf,
    /// Root for per-step run logs
    /// (`<logs_root>/<app>/<version>/<target>/<step>.log`).
    #[serde(default = "default_logs_root")]
    pub logs_root: PathBuf,
}

fn default_logs_root() -> PathBuf {
    PathBuf::from("/srv/bento/logs")
}

impl Config {
    pub fn load() -> Result<Self> {
        let path = std::env::var("BENTO_CONFIG").unwrap_or_else(|_| "bento-daemon.toml".into());
        let raw = std::fs::read_to_string(&path)
            .with_context(|| format!("reading daemon config at {path}"))?;
        Ok(toml::from_str(&raw)?)
    }

    #[cfg(test)]
    pub fn for_tests(root: &std::path::Path) -> Self {
        Self {
            listen: "127.0.0.1:0".into(),
            db_path: root.join("bento.db"),
            topology_path: root.join("bento.toml"),
            secrets_root: root.join("secrets"),
            dist_root: root.join("dist"),
            logs_root: root.join("logs"),
        }
    }
}