rename all crates

crates/pacdef_core/src/config.rs

@@ -0,0 +1,63 @@
+use std::fs::{read_to_string, File};
+use std::io::{ErrorKind, Write};
+use std::path::PathBuf;
+
+use anyhow::{bail, Context, Result};
+use serde_derive::{Deserialize, Serialize};
+
+use crate::path::get_pacdef_base_dir;
+
+const CONFIG_FILE_NAME: &str = "pacdef.yaml";
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Config {
+    pub aur_helper: String,
+    pub aur_rm_args: Option<Vec<String>>,
+    pub warn_not_symlinks: bool,
+}
+
+impl Config {
+    pub fn load() -> Result<Self> {
+        let file = get_config_file()?;
+        let from_file = read_to_string(&file);
+
+        if let Err(e) = from_file {
+            if e.kind() == ErrorKind::NotFound {
+                println!("creating default config under {}", file.to_string_lossy());
+                return Self::use_default_and_save_to(file);
+            } else {
+                bail!("unexpected error occured: {e:?}");
+            };
+        }
+
+        let content = from_file.expect("we already handled that error");
+
+        serde_yaml::from_str(&content).context("parsing yaml config")
+    }
+
+    fn use_default_and_save_to(file: PathBuf) -> Result<Self> {
+        let result = Self::default();
+
+        let content = serde_yaml::to_string(&result).context("converting Config to yaml")?;
+        let mut output = File::create(file).context("creating default config file")?;
+        write!(output, "{content}").context("writing default config")?;
+
+        Ok(result)
+    }
+}
+
+fn get_config_file() -> Result<PathBuf> {
+    let mut file = get_pacdef_base_dir().context("getting pacdef base dir for config file")?;
+    file.push(CONFIG_FILE_NAME);
+    Ok(file)
+}
+
+impl Default for Config {
+    fn default() -> Self {
+        Self {
+            aur_helper: "paru".into(),
+            aur_rm_args: None,
+            warn_not_symlinks: true,
+        }
+    }
+}