feat: implement CRUD APIs for projects and scenarios with validated schemas

schemas/scenario.py

@@ -0,0 +1,66 @@
+from __future__ import annotations
+
+from datetime import date, datetime
+
+from pydantic import BaseModel, ConfigDict, field_validator
+
+from models import ResourceType, ScenarioStatus
+
+
+class ScenarioBase(BaseModel):
+    name: str
+    description: str | None = None
+    status: ScenarioStatus = ScenarioStatus.DRAFT
+    start_date: date | None = None
+    end_date: date | None = None
+    discount_rate: float | None = None
+    currency: str | None = None
+    primary_resource: ResourceType | None = None
+
+    model_config = ConfigDict(extra="forbid")
+
+    @field_validator("currency")
+    @classmethod
+    def normalise_currency(cls, value: str | None) -> str | None:
+        if value is None:
+            return value
+        value = value.upper()
+        if len(value) != 3:
+            raise ValueError("Currency code must be a 3-letter ISO value")
+        return value
+
+
+class ScenarioCreate(ScenarioBase):
+    pass
+
+
+class ScenarioUpdate(BaseModel):
+    name: str | None = None
+    description: str | None = None
+    status: ScenarioStatus | None = None
+    start_date: date | None = None
+    end_date: date | None = None
+    discount_rate: float | None = None
+    currency: str | None = None
+    primary_resource: ResourceType | None = None
+
+    model_config = ConfigDict(extra="forbid")
+
+    @field_validator("currency")
+    @classmethod
+    def normalise_currency(cls, value: str | None) -> str | None:
+        if value is None:
+            return value
+        value = value.upper()
+        if len(value) != 3:
+            raise ValueError("Currency code must be a 3-letter ISO value")
+        return value
+
+
+class ScenarioRead(ScenarioBase):
+    id: int
+    project_id: int
+    created_at: datetime
+    updated_at: datetime
+
+    model_config = ConfigDict(from_attributes=True)