5 files changed, 117 insertions, 74 deletions

diff --git a/src/commands/ai.rs b/src/commands/ai.rs
index a75f164..5ab077e 100644
--- a/src/commands/ai.rs
+++ b/src/commands/ai.rs
@@ -4,7 +4,7 @@ use crate::lang;
 
 type Context<'a> = poise::Context<'a, Data, Error>;
 
-/// Query the AI senator via OpenRouter
+/// Query the AI senator via OpenRouter or local LLM
 #[poise::command(slash_command)]
 pub async fn senator(
     ctx: Context<'_>,
@@ -13,20 +13,8 @@ pub async fn senator(
 ) -> crate::error::Result<()> {
     ctx.defer().await?;
 
-    let api_key = ctx
-        .data()
-        .config
-        .openrouter_api_key
-        .as_ref()
-        .ok_or_else(|| Error::Custom(lang::L_OPENROUTER_NO_KEY.into()))?;
-    let model = ctx
-        .data()
-        .config
-        .openrouter_model
-        .as_deref()
-        .unwrap_or("cognitivecomputations/dolphin-mistral-24b-venice-edition:free");
-
-    let client = crate::openrouter::OpenRouterClient::new(api_key.clone(), model.to_string());
+    let (api_url, api_key, model) = ctx.data().config.resolve_llm();
+    let client = crate::openrouter::OpenRouterClient::new(api_url, api_key, model);
     let response = client.chat(lang::SENATOR_SYSTEM_PROMPT, &text).await?;
 
     if tts_vc.unwrap_or(false) {
diff --git a/src/config.rs b/src/config.rs
index 96a6849..989a060 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -10,8 +10,13 @@ pub struct Config {
     pub copyparty_url: String,
     pub copyparty_url_upload: String,
     pub copyparty_password: Option<String>,
+    /// Deprecated – use llm_api_key instead
     pub openrouter_api_key: Option<String>,
+    /// Deprecated – use llm_model instead
     pub openrouter_model: Option<String>,
+    pub llm_api_key: Option<String>,
+    pub llm_model: Option<String>,
+    pub llm_api_url: String,
     pub database_path: String,
 }
 
@@ -72,6 +77,24 @@ const ENV_VARS: &[EnvVar] = &[
         description: "OpenRouter model",
     },
     EnvVar {
+        name: "LLM_API_KEY",
+        required: false,
+        default: None,
+        description: "LLM API key (takes priority over OPENROUTER_API_KEY)",
+    },
+    EnvVar {
+        name: "LLM_MODEL",
+        required: false,
+        default: None,
+        description: "LLM model name (takes priority over OPENROUTER_MODEL)",
+    },
+    EnvVar {
+        name: "LLM_API_URL",
+        required: false,
+        default: Some("https://openrouter.ai/api/v1/chat/completions"),
+        description: "LLM API full URL including /chat/completions path",
+    },
+    EnvVar {
         name: "SENATOR_DB_PATH",
         required: false,
         default: Some("data/senator.db"),
@@ -126,6 +149,19 @@ pub fn check_env_vars() {
 
 impl Config {
     pub fn from_env() -> Self {
+        let openrouter_api_key = env::var("OPENROUTER_API_KEY").ok();
+        let openrouter_model = env::var("OPENROUTER_MODEL").ok();
+        let llm_api_key = env::var("LLM_API_KEY").ok();
+        let llm_model = env::var("LLM_MODEL").ok();
+
+        // Warn about deprecated env vars (mirrors Python's BACKWARD_COMPAT_MSG)
+        if openrouter_api_key.is_some() && llm_api_key.is_none() {
+            tracing::warn!("OPENROUTER_API_KEY is deprecated. Use LLM_API_KEY instead.");
+        }
+        if openrouter_model.is_some() && llm_model.is_none() {
+            tracing::warn!("OPENROUTER_MODEL is deprecated. Use LLM_MODEL instead.");
+        }
+
         Self {
             token: env::var("TOKEN").expect("Missing TOKEN"),
             status_channel_id: env::var("STATUS_CHANNEL_ID")
@@ -137,9 +173,32 @@ impl Config {
             copyparty_url_upload: env::var("COPYPARTY_URL_UPLOAD")
                 .unwrap_or_else(|_| "http://localhost:3939".into()),
             copyparty_password: env::var("COPYPARTY_PASSWORD").ok(),
-            openrouter_api_key: env::var("OPENROUTER_API_KEY").ok(),
-            openrouter_model: env::var("OPENROUTER_MODEL").ok(),
+            openrouter_api_key,
+            openrouter_model,
+            llm_api_key,
+            llm_model,
+            llm_api_url: env::var("LLM_API_URL")
+                .unwrap_or_else(|_| "https://openrouter.ai/api/v1/chat/completions".into()),
             database_path: env::var("SENATOR_DB_PATH").unwrap_or_else(|_| "data/senator.db".into()),
         }
     }
+
+    /// Resolve the effective LLM config: (api_url, api_key, model).
+    /// LLM_* vars take priority; falls back to OPENROUTER_* for backward compat.
+    pub fn resolve_llm(&self) -> (String, String, String) {
+        let api_url = self.llm_api_url.clone();
+        let api_key = self
+            .llm_api_key
+            .clone()
+            .or_else(|| self.openrouter_api_key.clone())
+            .unwrap_or_default();
+        let model = self
+            .llm_model
+            .clone()
+            .or_else(|| self.openrouter_model.clone())
+            .unwrap_or_else(|| {
+                "cognitivecomputations/dolphin-mistral-24b-venice-edition:free".into()
+            });
+        (api_url, api_key, model)
+    }
 }
diff --git a/src/events/mod.rs b/src/events/mod.rs
index 457ebcd..9a193d0 100644
--- a/src/events/mod.rs
+++ b/src/events/mod.rs
@@ -335,20 +335,22 @@ pub async fn handle_message(
     let is_mention = new_message.mentions_user_id(ctx.cache.current_user().id);
     let has_keyword = content_lower.contains(&data.config.assistant_keyword);
 
-    if (is_mention || has_keyword) && data.config.openrouter_api_key.is_some() {
-        let api_key = data.config.openrouter_api_key.clone().unwrap();
-        let model = data.config.openrouter_model.clone().unwrap_or_else(|| {
-            "cognitivecomputations/dolphin-mistral-24b-venice-edition:free".into()
-        });
-
-        let client = crate::openrouter::OpenRouterClient::new(api_key, model);
+    if is_mention || has_keyword {
+        let (api_url, api_key, model) = data.config.resolve_llm();
+        let client = crate::openrouter::OpenRouterClient::new(api_url, api_key, model);
         let assistant_prompt = lang::ASSISTANT_SYSTEM_PROMPT;
 
+        let bot_id = ctx.cache.current_user().id;
         let mut messages = Vec::new();
         let mut current_msg = Some(new_message.clone());
         for _ in 0..5 {
             if let Some(msg) = current_msg {
-                messages.push(("user".into(), msg.content.clone()));
+                let role = if msg.author.id == bot_id {
+                    "assistant"
+                } else {
+                    "user"
+                };
+                messages.push((role.into(), msg.content.clone()));
                 current_msg = match msg.message_reference.and_then(|r| r.message_id) {
                     Some(ref_id) => msg.channel_id.message(ctx, ref_id).await.ok(),
                     None => None,
diff --git a/src/lang.rs b/src/lang.rs
index 626f387..b1ed088 100644
--- a/src/lang.rs
+++ b/src/lang.rs
@@ -312,8 +312,8 @@ pub fn fmt_cp_invalid_json(e: &dyn std::fmt::Display, snippet: &str) -> String {
 
 // ── OpenRouter ────────────────────────────────────────────────────────
 
-pub fn fmt_openrouter_err(status: &dyn std::fmt::Display, text: &str) -> String {
-    format!("Błąd API OpenRouter. {status}: {text}")
+pub fn fmt_llm_err(endpoint: &str, status: &dyn std::fmt::Display, text: &str) -> String {
+    format!("Błąd API LLM ({endpoint}). {status}: {text}")
 }
 
 // ── Voice / audio decoding ────────────────────────────────────────────
diff --git a/src/openrouter/mod.rs b/src/openrouter/mod.rs
index 31cee85..1d3b443 100644
--- a/src/openrouter/mod.rs
+++ b/src/openrouter/mod.rs
@@ -1,3 +1,5 @@
+use tracing::info;
+
 use reqwest::Client;
 use serde::{Deserialize, Serialize};
 
@@ -7,6 +9,7 @@ use crate::lang;
 pub struct OpenRouterClient {
     api_key: String,
     model: String,
+    api_url: String,
     client: Client,
 }
 
@@ -39,14 +42,49 @@ struct MessageContent {
 }
 
 impl OpenRouterClient {
-    pub fn new(api_key: String, model: String) -> Self {
+    /// `api_url` is the full URL including `/chat/completions` path.
+    pub fn new(api_url: String, api_key: String, model: String) -> Self {
+        info!("LLM client: url={api_url}, model={model}");
         Self {
             api_key,
             model,
+            api_url,
             client: Client::new(),
         }
     }
 
+    async fn do_request(&self, body: &ChatRequest) -> Result<String> {
+        let mut req = self
+            .client
+            .post(&self.api_url)
+            .header("Content-Type", "application/json")
+            .json(body);
+
+        if !self.api_key.is_empty() {
+            req = req.header("Authorization", format!("Bearer {}", self.api_key));
+        }
+
+        let resp = req.send().await?;
+
+        if !resp.status().is_success() {
+            let status = resp.status();
+            let text = resp.text().await.unwrap_or_default();
+            return Err(crate::error::Error::Custom(lang::fmt_llm_err(
+                &self.api_url,
+                &status,
+                &text,
+            )));
+        }
+
+        let chat_resp: ChatResponse = resp.json().await?;
+        Ok(chat_resp
+            .choices
+            .into_iter()
+            .next()
+            .map(|c| c.message.content)
+            .unwrap_or_default())
+    }
+
     pub async fn chat(&self, system_prompt: &str, user_message: &str) -> Result<String> {
         let body = ChatRequest {
             model: self.model.clone(),
@@ -63,29 +101,7 @@ impl OpenRouterClient {
             max_tokens: 500,
         };
 
-        let resp = self
-            .client
-            .post("https://openrouter.ai/api/v1/chat/completions")
-            .header("Authorization", format!("Bearer {}", self.api_key))
-            .json(&body)
-            .send()
-            .await?;
-
-        if !resp.status().is_success() {
-            let status = resp.status();
-            let text = resp.text().await.unwrap_or_default();
-            return Err(crate::error::Error::Custom(lang::fmt_openrouter_err(
-                &status, &text,
-            )));
-        }
-
-        let chat_resp: ChatResponse = resp.json().await?;
-        Ok(chat_resp
-            .choices
-            .into_iter()
-            .next()
-            .map(|c| c.message.content)
-            .unwrap_or_default())
+        self.do_request(&body).await
     }
 
     pub async fn chat_with_history(
@@ -107,28 +123,6 @@ impl OpenRouterClient {
             max_tokens: 500,
         };
 
-        let resp = self
-            .client
-            .post("https://openrouter.ai/api/v1/chat/completions")
-            .header("Authorization", format!("Bearer {}", self.api_key))
-            .json(&body)
-            .send()
-            .await?;
-
-        if !resp.status().is_success() {
-            let status = resp.status();
-            let text = resp.text().await.unwrap_or_default();
-            return Err(crate::error::Error::Custom(lang::fmt_openrouter_err(
-                &status, &text,
-            )));
-        }
-
-        let chat_resp: ChatResponse = resp.json().await?;
-        Ok(chat_resp
-            .choices
-            .into_iter()
-            .next()
-            .map(|c| c.message.content)
-            .unwrap_or_default())
+        self.do_request(&body).await
     }
 }