improve delta process (#657)

src/services/apis/custom-api.mjs

@@ -62,12 +62,18 @@ export async function generateAnswersWithCustomApi(port, question, session, apiK
       }
 
       if (data.response) answer = data.response
-      else
+      else {
-        answer +=
+        const delta = data.choices[0]?.delta?.content
-          data.choices[0]?.delta?.content ||
+        const content = data.choices[0]?.message?.content
-          data.choices[0]?.message?.content ||
+        const text = data.choices[0]?.text
-          data.choices[0]?.text ||
+        if (delta !== undefined) {
-          ''
+          answer += delta
+        } else if (content) {
+          answer = content
+        } else if (text) {
+          answer += text
+        }
+      }
       port.postMessage({ answer: answer, done: false, session: null })
     },
     async onStart() {},

src/services/apis/openai-api.mjs

@@ -154,11 +154,16 @@ export async function generateAnswersWithChatgptApiCompat(
         console.debug('json error', error)
         return
       }
-      answer +=
+      const delta = data.choices[0]?.delta?.content
-        data.choices[0]?.delta?.content ||
+      const content = data.choices[0]?.message?.content
-        data.choices[0]?.message?.content ||
+      const text = data.choices[0]?.text
-        data.choices[0]?.text ||
+      if (delta !== undefined) {
-        ''
+        answer += delta
+      } else if (content) {
+        answer = content
+      } else if (text) {
+        answer += text
+      }
       port.postMessage({ answer: answer, done: false, session: null })
     },
     async onStart() {},