"""D3FEND endpoints — defensive technique listings, mappings, and import trigger."""

import logging
from typing import Optional

from fastapi import APIRouter, Depends, Query
from sqlalchemy.orm import Session

from app.database import get_db
from app.dependencies.auth import get_current_user, require_role
from app.models.user import User
from app.services.d3fend_import_service import (
    import_d3fend_techniques,
    import_d3fend_mappings,
)
from app.services.d3fend_query_service import (
    list_defensive_techniques as list_defensive_techniques_svc,
    list_d3fend_tactics,
    get_defenses_for_attack_technique,
)

logger = logging.getLogger(__name__)

router = APIRouter(prefix="/d3fend", tags=["d3fend"])


# ---------------------------------------------------------------------------
# GET /d3fend — List all defensive techniques
# ---------------------------------------------------------------------------

@router.get("")
def list_defensive_techniques(
    tactic: Optional[str] = Query(None),
    search: Optional[str] = Query(None),
    offset: int = Query(0, ge=0),
    limit: int = Query(50, ge=1, le=200),
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    """List all D3FEND defensive techniques with optional filters."""
    return list_defensive_techniques_svc(
        db, tactic=tactic, search=search, offset=offset, limit=limit
    )


# ---------------------------------------------------------------------------
# GET /d3fend/tactics — List all D3FEND tactics
# ---------------------------------------------------------------------------

@router.get("/tactics")
def list_d3fend_tactics_endpoint(
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    """Return a list of all D3FEND tactics with counts."""
    return list_d3fend_tactics(db)


# ---------------------------------------------------------------------------
# GET /d3fend/for-technique/{mitre_id} — Defenses for a technique
# ---------------------------------------------------------------------------

@router.get("/for-technique/{mitre_id}")
def get_defenses_for_attack_technique_endpoint(
    mitre_id: str,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    """Get all D3FEND defensive techniques mapped to a given ATT&CK technique."""
    return get_defenses_for_attack_technique(db, mitre_id)


# ---------------------------------------------------------------------------
# POST /d3fend/import — Trigger D3FEND import (admin only)
# ---------------------------------------------------------------------------

@router.post("/import")
def trigger_d3fend_import(
    db: Session = Depends(get_db),
    current_user: User = Depends(require_role("admin")),
):
    """Import D3FEND techniques and ATT&CK mappings. Admin only."""
    tech_result = import_d3fend_techniques(db)
    mapping_result = import_d3fend_mappings(db)

    return {
        "techniques": tech_result,
        "mappings": mapping_result,
    }