Use config file to store sessions

crunchy-cli-core/src/utils/config.rs

@@ -0,0 +1,59 @@
+use anyhow::{bail, Result};
+use serde::{Deserialize, Serialize};
+use std::fs;
+use std::path::PathBuf;
+
+#[derive(Deserialize, Serialize)]
+#[serde(rename_all = "snake_case")]
+#[serde(tag = "method")]
+pub enum Auth {
+    RefreshToken { token: String },
+    EtpRt { token: String },
+    Anonymous,
+}
+
+#[derive(Default, Deserialize, Serialize)]
+pub struct Config {
+    pub auth: Option<Auth>,
+}
+
+impl Config {
+    pub fn load() -> Result<Option<Self>> {
+        let path = Config::assert_config_file_path(true)?;
+
+        if let Some(p) = path {
+            if p.exists() {
+                let content = fs::read_to_string(p)?;
+                return Ok(Some(toml::from_str(&content)?));
+            }
+        }
+        Ok(None)
+    }
+
+    pub fn write(&self) -> Result<()> {
+        let path = Config::assert_config_file_path(false)?.unwrap();
+        Ok(fs::write(path, toml::to_string(self)?)?)
+    }
+
+    pub fn config_file_path() -> Option<PathBuf> {
+        dirs::config_dir().map(|config_dir| config_dir.join("crunchy-cli.conf"))
+    }
+
+    fn assert_config_file_path(ignore_non_existing_config_dir: bool) -> Result<Option<PathBuf>> {
+        let Some(path) = Config::config_file_path() else {
+            if ignore_non_existing_config_dir {
+                return Ok(None)
+            }
+            bail!("Cannot find config directory")
+        };
+
+        if path.exists() && path.is_dir() {
+            bail!(
+                "Config path ({}) is a directory (must be a normal file)",
+                path.to_string_lossy()
+            )
+        }
+
+        Ok(Some(path))
+    }
+}

crunchy-cli-core/src/utils/context.rs

@@ -1,5 +1,7 @@
+use crate::utils::config::Config;
 use crunchyroll_rs::Crunchyroll;
 
 pub struct Context {
     pub crunchy: Crunchyroll,
+    pub config: Config,
 }

crunchy-cli-core/src/utils/mod.rs

@@ -1,4 +1,5 @@
 pub mod clap;
+pub mod config;
 pub mod context;
 pub mod download;
 pub mod ffmpeg;