Adding support for translations (#120)

Add translations support

src/crewai/prompts.py

@@ -1,36 +1,15 @@
-import json
-import os
-from typing import ClassVar, Dict, Optional
+from typing import ClassVar
 
 from langchain.prompts import PromptTemplate
-from pydantic import BaseModel, Field, PrivateAttr, ValidationError, model_validator
+from pydantic import BaseModel, Field
+
+from .i18n import I18N
 
 
 class Prompts(BaseModel):
     """Manages and generates prompts for a generic agent with support for different languages."""
 
-    _prompts: Optional[Dict[str, str]] = PrivateAttr()
-    language: Optional[str] = Field(
-        default="en",
-        description="Language of the prompts.",
-    )
-
-    @model_validator(mode="after")
-    def load_prompts(self) -> "Prompts":
-        """Load prompts from a JSON file based on the specified language."""
-        try:
-            dir_path = os.path.dirname(os.path.realpath(__file__))
-            prompts_path = os.path.join(dir_path, f"prompts/{self.language}.json")
-
-            with open(prompts_path, "r") as f:
-                self._prompts = json.load(f)["slices"]
-        except FileNotFoundError:
-            raise ValidationError(
-                f"Prompt file for language '{self.language}' not found."
-            )
-        except json.JSONDecodeError:
-            raise ValidationError(f"Error decoding JSON from the prompts file.")
-        return self
+    i18n: I18N = Field(default=I18N())
 
     SCRATCHPAD_SLICE: ClassVar[str] = "\n{agent_scratchpad}"
 
@@ -48,10 +27,6 @@ class Prompts(BaseModel):
 
     def _build_prompt(self, components: [str]) -> str:
         """Constructs a prompt string from specified components."""
-        prompt_parts = [
-            self._prompts[component]
-            for component in components
-            if component in self._prompts
-        ]
+        prompt_parts = [self.i18n.slice(component) for component in components]
         prompt_parts.append(self.SCRATCHPAD_SLICE)
         return PromptTemplate.from_template("".join(prompt_parts))