skiller 0.1.1

Symlink manager for AI tool skill bundles
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use anyhow::{Context, Result};
use serde::{Deserialize, Serialize};
use std::path::{Path, PathBuf};

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Target {
    pub r#type: String,
    pub path: PathBuf,
}

#[derive(Debug, Default, Serialize, Deserialize)]
pub struct Config {
    pub source: Option<PathBuf>,
    pub targets: Vec<Target>,
}

impl Config {
    pub fn path() -> Result<PathBuf> {
        let dir = dirs::home_dir()
            .context("cannot find home dir")?
            .join(".config/skiller");
        Ok(dir.join("config.json"))
    }

    pub fn load() -> Result<Self> {
        let path = Self::path()?;
        if !path.exists() {
            return Ok(Self::default());
        }
        let raw = std::fs::read_to_string(&path)
            .with_context(|| format!("reading {}", path.display()))?;
        serde_json::from_str(&raw).context("parsing config")
    }

    pub fn save(&self) -> Result<()> {
        let path = Self::path()?;
        if let Some(parent) = path.parent() {
            std::fs::create_dir_all(parent)?;
        }
        let json = serde_json::to_string_pretty(self)?;
        std::fs::write(&path, json)
            .with_context(|| format!("writing {}", path.display()))
    }

    pub fn source_dir(&self) -> Result<&Path> {
        self.source
            .as_deref()
            .context("source not configured — run: skiller source <path>")
    }
}