refactor config

src/config.rs

@@ -0,0 +1,67 @@
+use std::env;
+
+#[derive(Clone, Debug)]
+pub struct Config {
+    pub database_url: String,
+    pub port: u16,
+    pub zen_api_key: Option<String>,
+    pub tavily_api_key: Option<String>,
+    pub authentik_issuer: String,
+    pub authentik_client_id: String,
+    pub authentik_client_secret: String,
+    pub cors_allowed_origins: Option<String>,
+    pub cookie_secure: bool,
+    pub agent_max_turns: u32,
+    pub agent_max_duration_secs: u64,
+}
+
+impl Config {
+    pub fn from_env() -> Result<Self, Box<dyn std::error::Error>> {
+        let database_url = env::var("DATABASE_URL").map_err(|_| "DATABASE_URL must be set")?;
+
+        let port = env::var("PORT")
+            .ok()
+            .and_then(|s| s.parse().ok())
+            .unwrap_or(3000);
+
+        let zen_api_key = env::var("ZEN_API_KEY").ok();
+        let tavily_api_key = env::var("TAVILY_API_KEY").ok();
+
+        let authentik_issuer =
+            env::var("AUTHENTIK_ISSUER").map_err(|_| "AUTHENTIK_ISSUER must be set")?;
+        let authentik_client_id =
+            env::var("AUTHENTIK_CLIENT_ID").map_err(|_| "AUTHENTIK_CLIENT_ID must be set")?;
+        let authentik_client_secret = env::var("AUTHENTIK_CLIENT_SECRET")
+            .map_err(|_| "AUTHENTIK_CLIENT_SECRET must be set")?;
+
+        let cors_allowed_origins = env::var("CORS_ALLOWED_ORIGINS").ok();
+
+        let cookie_secure = env::var("COOKIE_SECURE")
+            .map(|v| v == "true")
+            .unwrap_or(false);
+
+        let agent_max_turns = env::var("AGENT_MAX_TURNS")
+            .ok()
+            .and_then(|s| s.parse().ok())
+            .unwrap_or(20);
+
+        let agent_max_duration_secs = env::var("AGENT_MAX_DURATION_SECS")
+            .ok()
+            .and_then(|s| s.parse().ok())
+            .unwrap_or(120);
+
+        Ok(Config {
+            database_url,
+            port,
+            zen_api_key,
+            tavily_api_key,
+            authentik_issuer,
+            authentik_client_id,
+            authentik_client_secret,
+            cors_allowed_origins,
+            cookie_secure,
+            agent_max_turns,
+            agent_max_duration_secs,
+        })
+    }
+}