updated the architecture

app/schemas/scan.py

@@ -0,0 +1,72 @@
+from datetime import datetime
+
+from pydantic import BaseModel, Field
+
+
+class ScanRequest(BaseModel):
+    url: str = Field(..., description="The URL of the website to scan")
+
+
+class Issue(BaseModel):
+    issue: str
+    severity: str
+    layer: str
+    fix: str
+    contextual_severity: str | None = None
+    explanation: str | None = None
+    remediation_snippet: str | None = None
+
+
+class LayerStatus(BaseModel):
+    issues: int = 0
+    status: str = "green"
+
+
+class ScanResponse(BaseModel):
+    id: str | None = None
+    url: str
+    security_score: int
+    layers: dict[str, LayerStatus]
+    issues: list[Issue]
+    created_at: datetime | None = None
+
+
+class ScanHistoryItem(BaseModel):
+    id: str
+    url: str
+    security_score: int
+    created_at: datetime
+
+    model_config = {"from_attributes": True}
+
+
+class ScanHistoryResponse(BaseModel):
+    scans: list[ScanHistoryItem]
+    total: int
+    page: int
+    per_page: int
+
+
+class DashboardTrendsResponse(BaseModel):
+    total_scans: int
+    average_score: float
+    recent_scans: list[ScanHistoryItem]
+
+
+class ChatRequest(BaseModel):
+    message: str
+
+
+class ChatResponse(BaseModel):
+    reply: str
+
+
+class ThreatNarrativeResponse(BaseModel):
+    narrative: str
+
+
+class ScanDiffResponse(BaseModel):
+    resolved_issues: list[Issue]
+    new_issues: list[Issue]
+    persisting_issues: list[Issue]
+    score_change: int