refac: title generation

backend/utils/models.py

@@ -1,10 +0,0 @@
-from apps.webui.models.models import Models, ModelModel, ModelForm, ModelResponse
-
-
-def get_model_id_from_custom_model_id(id: str):
-    model = Models.get_model_by_id(id)
-
-    if model:
-        return model.id
-    else:
-        return id

backend/utils/task.py

@@ -0,0 +1,70 @@
+import re
+import math
+
+from datetime import datetime
+from typing import Optional
+
+
+def prompt_template(
+    template: str, user_name: str = None, current_location: str = None
+) -> str:
+    # Get the current date
+    current_date = datetime.now()
+
+    # Format the date to YYYY-MM-DD
+    formatted_date = current_date.strftime("%Y-%m-%d")
+
+    # Replace {{CURRENT_DATE}} in the template with the formatted date
+    template = template.replace("{{CURRENT_DATE}}", formatted_date)
+
+    if user_name:
+        # Replace {{USER_NAME}} in the template with the user's name
+        template = template.replace("{{USER_NAME}}", user_name)
+
+    if current_location:
+        # Replace {{CURRENT_LOCATION}} in the template with the current location
+        template = template.replace("{{CURRENT_LOCATION}}", current_location)
+
+    return template
+
+
+def title_generation_template(
+    template: str, prompt: str, user: Optional[dict] = None
+) -> str:
+    def replacement_function(match):
+        full_match = match.group(0)
+        start_length = match.group(1)
+        end_length = match.group(2)
+        middle_length = match.group(3)
+
+        if full_match == "{{prompt}}":
+            return prompt
+        elif start_length is not None:
+            return prompt[: int(start_length)]
+        elif end_length is not None:
+            return prompt[-int(end_length) :]
+        elif middle_length is not None:
+            middle_length = int(middle_length)
+            if len(prompt) <= middle_length:
+                return prompt
+            start = prompt[: math.ceil(middle_length / 2)]
+            end = prompt[-math.floor(middle_length / 2) :]
+            return f"{start}...{end}"
+        return ""
+
+    template = re.sub(
+        r"{{prompt}}|{{prompt:start:(\d+)}}|{{prompt:end:(\d+)}}|{{prompt:middletruncate:(\d+)}}",
+        replacement_function,
+        template,
+    )
+
+    template = prompt_template(
+        template,
+        **(
+            {"user_name": user.get("name"), "current_location": user.get("location")}
+            if user
+            else {}
+        ),
+    )
+
+    return template