refactor: move server rs workspace entries into crates

server-rs/crates/api-server/src/config.rs

@@ -0,0 +1,52 @@
+use std::{env, net::SocketAddr};
+
+// 集中管理 api-server 的启动配置，避免入口层直接散落环境变量解析逻辑。
+#[derive(Clone, Debug)]
+pub struct AppConfig {
+    pub bind_host: String,
+    pub bind_port: u16,
+    pub log_filter: String,
+}
+
+impl Default for AppConfig {
+    fn default() -> Self {
+        Self {
+            bind_host: "127.0.0.1".to_string(),
+            bind_port: 3000,
+            log_filter: "info,tower_http=info".to_string(),
+        }
+    }
+}
+
+impl AppConfig {
+    pub fn from_env() -> Self {
+        let mut config = Self::default();
+
+        if let Ok(bind_host) = env::var("GENARRATIVE_API_HOST") {
+            if !bind_host.trim().is_empty() {
+                config.bind_host = bind_host;
+            }
+        }
+
+        if let Ok(bind_port) = env::var("GENARRATIVE_API_PORT") {
+            if let Ok(parsed_port) = bind_port.parse::<u16>() {
+                config.bind_port = parsed_port;
+            }
+        }
+
+        if let Ok(log_filter) = env::var("GENARRATIVE_API_LOG") {
+            if !log_filter.trim().is_empty() {
+                config.log_filter = log_filter;
+            }
+        }
+
+        config
+    }
+
+    pub fn bind_socket_addr(&self) -> SocketAddr {
+        let address = format!("{}:{}", self.bind_host, self.bind_port);
+        address
+            .parse()
+            .unwrap_or_else(|_| SocketAddr::from(([127, 0, 0, 1], 3000)))
+    }
+}