Add inject_date flag to Agent for automatic date injection (#2870)

* feat: Add inject_date flag to Agent for automatic date injection

Co-Authored-By: Joe Moura <joao@crewai.com>

* feat: Add date_format parameter and error handling to inject_date feature

Co-Authored-By: Joe Moura <joao@crewai.com>

* fix: Update test implementation for inject_date feature

Co-Authored-By: Joe Moura <joao@crewai.com>

* fix: Add date format validation to prevent invalid formats

Co-Authored-By: Joe Moura <joao@crewai.com>

* docs: Update documentation for inject_date feature

Co-Authored-By: Joe Moura <joao@crewai.com>

* unnecesary

* new tests

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: Joe Moura <joao@crewai.com>
Co-authored-by: João Moura <joaomdmoura@gmail.com>

src/crewai/agent.py

@@ -115,6 +115,14 @@ class Agent(BaseAgent):
         default=False,
         description="Whether the agent is multimodal.",
     )
+    inject_date: bool = Field(
+        default=False,
+        description="Whether to automatically inject the current date into tasks.",
+    )
+    date_format: str = Field(
+        default="%Y-%m-%d",
+        description="Format string for date when inject_date is enabled.",
+    )
     code_execution_mode: Literal["safe", "unsafe"] = Field(
         default="safe",
         description="Mode for code execution: 'safe' (using Docker) or 'unsafe' (direct execution).",
@@ -248,6 +256,8 @@ class Agent(BaseAgent):
                 else:
                     print(f"Error during reasoning process: {str(e)}")
             
+        self._inject_date_to_task(task)
+            
         if self.tools_handler:
             self.tools_handler.last_used_tool = {}  # type: ignore # Incompatible types in assignment (expression has type "dict[Never, Never]", variable has type "ToolCalling")
 
@@ -608,6 +618,26 @@ class Agent(BaseAgent):
 
         return description
 
+    def _inject_date_to_task(self, task):
+        """Inject the current date into the task description if inject_date is enabled."""
+        if self.inject_date:
+            from datetime import datetime
+            try:
+                valid_format_codes = ['%Y', '%m', '%d', '%H', '%M', '%S', '%B', '%b', '%A', '%a']
+                is_valid = any(code in self.date_format for code in valid_format_codes)
+                
+                if not is_valid:
+                    raise ValueError(f"Invalid date format: {self.date_format}")
+                
+                current_date: str = datetime.now().strftime(self.date_format)
+                task.description += f"\n\nCurrent Date: {current_date}"
+            except Exception as e:
+                if hasattr(self, '_logger'):
+                    self._logger.log("warning", f"Failed to inject date: {str(e)}")
+                else:
+                    print(f"Warning: Failed to inject date: {str(e)}")
+
+
     def _validate_docker_installation(self) -> None:
         """Check if Docker is installed and running."""
         if not shutil.which("docker"):