first commit

app/pipelines/base.py

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+from typing import Any, Dict, Optional, Callable, List, TypeVar, Generic
+from sqlalchemy.orm import Session
+from app.core.auth import CurrentUser
+
+from app.serviceInput.base import ServiceInput
+from app.serviceOutput.base import ServiceOutput
+
+InputT = TypeVar("InputT")
+OutputT = TypeVar("OutputT")
+
+class Pipeline(Generic[InputT, OutputT]):
+    """
+    Pipeline base que unifica entrada, procesamiento y salida.
+    """
+
+    def __init__(self, db: Session, user: CurrentUser, operation: str):
+        self.db = db
+        self.user = user
+        self.operation = operation
+        self._steps: List[Callable] = []
+        self._input: Optional[ServiceInput] = None
+        self._output: Optional[ServiceOutput] = None
+        self._input_data: Any = None
+        self._schema = None
+        self._permission: Optional[str] = None
+        self._affidavit: Optional[Any] = None
+
+    def set_input_data(self, data: Any) -> 'Pipeline':
+        """Define los datos de entrada"""
+        self._input_data = data
+        return self
+
+    def with_schema(self, schema: Any) -> 'Pipeline':
+        """Define el schema de validación"""
+        self._schema = schema
+        return self
+
+    def with_permission(self, permission: Optional[str]) -> 'Pipeline':
+        """Define el permiso requerido"""
+        self._permission = permission
+        return self
+
+    def with_affidavit(self, affidavit: Any) -> 'Pipeline':
+        """Define el certificador legal"""
+        self._affidavit = affidavit
+        return self
+
+    def add_step(self, name: str, func: Callable) -> 'Pipeline':
+        """Agrega un paso al pipeline"""
+        self._steps.append({"name": name, "func": func})
+        return self
+
+    async def execute(self, context: Dict = None) -> Dict:
+        """
+        Ejecuta el pipeline completo:
+        1. Validación de entrada
+        2. Verificación de permisos
+        3. Ejecución de pasos
+        4. Retorna resultado
+        """
+        if context is None:
+            context = {}
+
+        context["db"] = self.db
+        context["user"] = self.user
+        context["operation"] = self.operation
+        context["input_data"] = self._input_data
+        context["schema"] = self._schema
+        context["permission"] = self._permission
+        context["affidavit"] = self._affidavit
+
+        result = context
+
+        for step in self._steps:
+            result = await step["func"](result)
+            if result.get("error"):
+                return {"success": False, "error": result["error"]}
+
+        return {"success": True, "data": result.get("output")}