Feat/model as tool (#2744)

api/core/model_runtime/entities/model_entities.py

@@ -17,7 +17,7 @@ class ModelType(Enum):
     SPEECH2TEXT = "speech2text"
     MODERATION = "moderation"
     TTS = "tts"
-    # TEXT2IMG = "text2img"
+    TEXT2IMG = "text2img"
 
     @classmethod
     def value_of(cls, origin_model_type: str) -> "ModelType":
@@ -36,6 +36,8 @@ class ModelType(Enum):
             return cls.SPEECH2TEXT
         elif origin_model_type == 'tts' or origin_model_type == cls.TTS.value:
             return cls.TTS
+        elif origin_model_type == 'text2img' or origin_model_type == cls.TEXT2IMG.value:
+            return cls.TEXT2IMG
         elif origin_model_type == cls.MODERATION.value:
             return cls.MODERATION
         else:
@@ -59,10 +61,11 @@ class ModelType(Enum):
             return 'tts'
         elif self == self.MODERATION:
             return 'moderation'
+        elif self == self.TEXT2IMG:
+            return 'text2img'
         else:
             raise ValueError(f'invalid model type {self}')
 
-
 class FetchFrom(Enum):
     """
     Enum class for fetch from.