add gitea sig header check, add Json errors, begin AppState

src/env.rs

@@ -1,19 +1,36 @@
+use anyhow::anyhow;
 use dotenvy::dotenv;
 
-
+#[derive(Clone)]
 pub struct EnvConfig {
     pub http_port: u16,
+    pub webhook_secret: String,
+    pub open_router_api_key: String,
     pub bot_name: String,
 }
 
 pub fn load_config() -> anyhow::Result<EnvConfig> {
     dotenv().ok();
 
-    let http_port = std::env::var("HTTP_PORT")?.parse()?;
-    let bot_name = std::env::var("BOT_NAME")?;
+    let http_port = try_get_env("HTTP_PORT")?.parse()?;
+    let bot_name = try_get_env("BOT_NAME")?;
+    let webhook_secret = try_get_env("WEBHOOK_SIG_HEADER_SECRET")?;
+    let open_router_api_key = try_get_env("OPEN_ROUTER_API_KEY")?;
 
     Ok(EnvConfig {
         http_port,
+        webhook_secret,
         bot_name,
+        open_router_api_key,
     })
 }
+
+fn try_get_env(key: &str) -> anyhow::Result<String> {
+    let env = std::env::var(key)?;
+
+    if env.trim().len() == 0 {
+        return Err(anyhow!(format!("env var {} is empty", env)));
+    }
+
+    Ok(env)
+}