feat: support qianwen:qwen-vl-plus (#275)

1 files changed, 110 insertions, 40 deletions

diff --git a/src/client/qianwen.rs b/src/client/qianwen.rs
index 619ed76..ed4b6e6 100644
--- a/src/client/qianwen.rs
+++ b/src/client/qianwen.rs
@@ -1,4 +1,4 @@
-use super::{Client, ExtraConfig, Model, PromptType, QianwenClient, SendData};
+use super::{message::*, Client, ExtraConfig, Model, PromptType, QianwenClient, SendData};
 
 use crate::{config::GlobalConfig, render::ReplyHandler, utils::PromptKind};
 
@@ -13,10 +13,15 @@ use serde_json::{json, Value};
 const API_URL: &str =
     "https://dashscope.aliyuncs.com/api/v1/services/aigc/text-generation/generation";
 
-const MODELS: [(&str, usize); 3] = [
-    ("qwen-turbo", 6144),
-    ("qwen-plus", 6144),
-    ("qwen-max", 6144),
+const API_URL_VL: &str =
+    "https://dashscope.aliyuncs.com/api/v1/services/aigc/multimodal-generation/generation";
+
+const MODELS: [(&str, usize); 5] = [
+    ("qwen-turbo", 8192),
+    ("qwen-plus", 32768),
+    ("qwen-max", 8192),
+    ("qwen-max-longcontext", 30720),
+    ("qwen-vl-plus", 0),
 ];
 
 #[derive(Debug, Clone, Deserialize, Default)]
@@ -34,7 +39,7 @@ impl Client for QianwenClient {
 
     async fn send_message_inner(&self, client: &ReqwestClient, data: SendData) -> Result<String> {
         let builder = self.request_builder(client, data)?;
-        send_message(builder).await
+        send_message(builder, self.is_vl()).await
     }
 
     async fn send_message_streaming_inner(
@@ -44,7 +49,7 @@ impl Client for QianwenClient {
         data: SendData,
     ) -> Result<()> {
         let builder = self.request_builder(client, data)?;
-        send_message_streaming(builder, handler).await
+        send_message_streaming(builder, handler, self.is_vl()).await
     }
 }
 
@@ -68,49 +73,71 @@ impl QianwenClient {
         let api_key = self.get_api_key()?;
 
         let stream = data.stream;
-        let body = build_body(data, self.model.name.clone());
 
-        debug!("Qianwen Request: {API_URL} {body}");
+        let is_vl = self.is_vl();
+        let url = match is_vl {
+            true => API_URL_VL,
+            false => API_URL,
+        };
+        let body = build_body(data, self.model.name.clone(), is_vl)?;
+
+        debug!("Qianwen Request: {url} {body}");
 
-        let mut builder = client.post(API_URL).bearer_auth(api_key).json(&body);
+        let mut builder = client.post(url).bearer_auth(api_key).json(&body);
         if stream {
             builder = builder.header("X-DashScope-SSE", "enable");
         }
 
         Ok(builder)
     }
+
+    fn is_vl(&self) -> bool {
+        self.model.name.starts_with("qwen-vl")
+    }
 }
 
-async fn send_message(builder: RequestBuilder) -> Result<String> {
+async fn send_message(builder: RequestBuilder, is_vl: bool) -> Result<String> {
     let data: Value = builder.send().await?.json().await?;
     check_error(&data)?;
 
-    let output = data["output"]["text"]
-        .as_str()
-        .ok_or_else(|| anyhow!("Unexpected response {data}"))?;
+    let output = if is_vl {
+        data["output"]["choices"][0]["message"]["content"][0]["text"].as_str()
+    } else {
+        data["output"]["text"].as_str()
+    };
+
+    let output = output.ok_or_else(|| anyhow!("Unexpected response {data}"))?;
 
     Ok(output.to_string())
 }
 
-async fn send_message_streaming(builder: RequestBuilder, handler: &mut ReplyHandler) -> Result<()> {
+async fn send_message_streaming(
+    builder: RequestBuilder,
+    handler: &mut ReplyHandler,
+    is_vl: bool,
+) -> Result<()> {
     let mut es = builder.eventsource()?;
+    let mut offset = 0;
 
     while let Some(event) = es.next().await {
         match event {
             Ok(Event::Open) => {}
             Ok(Event::Message(message)) => {
                 let data: Value = serde_json::from_str(&message.data)?;
-                if let Some(text) = data["output"]["text"].as_str() {
+                check_error(&data)?;
+                if is_vl {
+                    let text = data["output"]["choices"][0]["message"]["content"][0]["text"].as_str();
+                    if let Some(text) = text {
+                        let text = &text[offset..];
+                        handler.text(text)?;
+                        offset += text.len();
+                    }
+                } else if let Some(text) = data["output"]["text"].as_str() {
                     handler.text(text)?;
                 }
             }
             Err(err) => {
                 match err {
-                    EventSourceError::InvalidStatusCode(_, res) => {
-                        let data: Value = res.json().await?;
-                        check_error(&data)?;
-                        bail!("Request failed");
-                    }
                     EventSourceError::StreamEnded => {}
                     _ => {
                         bail!("{}", err);
@@ -125,38 +152,81 @@ async fn send_message_streaming(builder: RequestBuilder, handler: &mut ReplyHand
 }
 
 fn check_error(data: &Value) -> Result<()> {
-    if let Some(code) = data["code"].as_str() {
-        if let Some(message) = data["message"].as_str() {
-            bail!("{message}");
-        } else {
-            bail!("{code}");
-        }
+    if let (Some(code), Some(message)) = (data["code"].as_str(), data["message"].as_str()) {
+        bail!("{code}: {message}");
     }
     Ok(())
 }
 
-fn build_body(data: SendData, model: String) -> Value {
+fn build_body(data: SendData, model: String, is_vl: bool) -> Result<Value> {
     let SendData {
         messages,
         temperature,
         stream,
     } = data;
 
-    let mut parameters = json!({});
 
-    if stream {
-        parameters["incremental_output"] = true.into();
-    }
+    let (input, parameters) = if is_vl {
+        let mut exist_embeded_image = false;
 
-    if let Some(v) = temperature {
-        parameters["temperature"] = v.into();
-    }
+        let messages: Vec<Value> = messages
+            .into_iter()
+            .map(|message| {
+                let role = message.role;
+                let content = match message.content {
+                    MessageContent::Text(text) => vec![json!({"text": text})],
+                    MessageContent::Array(list) => list
+                        .into_iter()
+                        .map(|item| match item {
+                            MessageContentPart::Text { text } => json!({"text": text}),
+                            MessageContentPart::ImageUrl {
+                                image_url: ImageUrl { url },
+                            } => {
+                                if url.starts_with("data:") {
+                                    exist_embeded_image = true;
+                                }
+                                json!({"image": url})
+                            },
+                        })
+                        .collect(),
+                };
+                json!({ "role": role, "content": content })
+            })
+            .collect();
 
-    json!({
-        "model": model,
-        "input": json!({
+        if exist_embeded_image {
+            bail!("The model does not support embeded images");
+        }
+
+        let input = json!({
+            "messages": messages,
+        });
+
+        let mut parameters = json!({});
+        if let Some(v) = temperature {
+            parameters["top_k"] = ((v * 50.0).round() as usize).into();
+        }
+        (input, parameters)
+    } else {
+        let input = json!({
             "messages": messages,
-        }),
+        });
+
+        let mut parameters = json!({});
+        if stream {
+            parameters["incremental_output"] = true.into();
+        }
+
+        if let Some(v) = temperature {
+            parameters["temperature"] = v.into();
+        }
+        (input, parameters)
+    };
+
+    let body = json!({
+        "model": model,
+        "input": input,
         "parameters": parameters
-    })
+    });
+    Ok(body)
 }