from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.ext.asyncio import AsyncSession

from app.core.database import get_db
from app.crud import audit as audit_crud
from app.crud import augmented_part as augmented_part_crud
from app.crud import augmented_part_note as augmented_part_note_crud
from app.deps import require_permission
from app.models.user import User
from app.schemas.augmented_part import (
    AugmentedPartCreate,
    AugmentedPartNoteCreate,
    AugmentedPartNoteRead,
    AugmentedPartRead,
    AugmentedPartSyncResult,
    AugmentedPartUpdate,
)
from app.services import augmented_part_sync

router = APIRouter()


@router.get("", response_model=list[AugmentedPartRead])
async def list_augmented_parts(
    skip: int = 0,
    limit: int = 100,
    db: AsyncSession = Depends(get_db),
    _: User = Depends(require_permission("augmented_parts:read")),
):
    return await augmented_part_crud.list_all(db, skip=skip, limit=limit)


@router.post("", response_model=AugmentedPartRead, status_code=status.HTTP_201_CREATED)
async def create_augmented_part(
    payload: AugmentedPartCreate,
    db: AsyncSession = Depends(get_db),
    actor: User = Depends(require_permission("augmented_parts:write")),
):
    ap = await augmented_part_crud.create(
        db,
        sku=payload.sku,
        description=payload.description,
        colour_id=payload.colour_id,
        manufacturer_id=payload.manufacturer_id,
        scope_model_id=payload.scope_model_id,
        part_type_id=payload.part_type_id,
        sub_part_type_id=payload.sub_part_type_id,
    )
    await audit_crud.log(
        db,
        actor=actor,
        action="create",
        resource_type="AugmentedPart",
        resource_id=ap.id,
        description=audit_crud.describe_create(
            "AugmentedPart", ap.id, ap.sku or ap.description
        ),
    )
    return ap


@router.post("/sync", response_model=AugmentedPartSyncResult)
async def sync_augmented_parts(
    db: AsyncSession = Depends(get_db),
    actor: User = Depends(require_permission("augmented_parts:write")),
):
    result = await augmented_part_sync.sync(db)
    await audit_crud.log(
        db,
        actor=actor,
        action="update",
        resource_type="AugmentedPart",
        resource_id=None,
        description=(
            f"Sync: {result.created} created, {result.deleted} deleted, "
            f"{result.skipped} skipped (no type match)"
        ),
    )
    return result


@router.get("/{augmented_part_id}", response_model=AugmentedPartRead)
async def get_augmented_part(
    augmented_part_id: int,
    db: AsyncSession = Depends(get_db),
    _: User = Depends(require_permission("augmented_parts:read")),
):
    ap = await augmented_part_crud.get(db, augmented_part_id)
    if ap is None:
        raise HTTPException(status_code=404, detail="Augmented part not found")
    return ap


@router.patch("/{augmented_part_id}", response_model=AugmentedPartRead)
async def update_augmented_part(
    augmented_part_id: int,
    payload: AugmentedPartUpdate,
    db: AsyncSession = Depends(get_db),
    actor: User = Depends(require_permission("augmented_parts:write")),
):
    ap = await augmented_part_crud.get(db, augmented_part_id)
    if ap is None:
        raise HTTPException(status_code=404, detail="Augmented part not found")
    changes = payload.model_dump(exclude_unset=True)
    ap = await augmented_part_crud.update(db, ap, changes)
    await audit_crud.log(
        db,
        actor=actor,
        action="update",
        resource_type="AugmentedPart",
        resource_id=ap.id,
        description=audit_crud.describe_update("AugmentedPart", ap.id, changes),
    )
    return ap


@router.delete("/{augmented_part_id}", status_code=status.HTTP_204_NO_CONTENT)
async def delete_augmented_part(
    augmented_part_id: int,
    db: AsyncSession = Depends(get_db),
    actor: User = Depends(require_permission("augmented_parts:delete")),
):
    ap = await augmented_part_crud.get(db, augmented_part_id)
    if ap is None:
        raise HTTPException(status_code=404, detail="Augmented part not found")
    label = ap.sku or ap.description
    await augmented_part_crud.delete(db, ap)
    await audit_crud.log(
        db,
        actor=actor,
        action="delete",
        resource_type="AugmentedPart",
        resource_id=augmented_part_id,
        description=audit_crud.describe_delete(
            "AugmentedPart", augmented_part_id, label
        ),
    )


@router.post(
    "/{augmented_part_id}/notes",
    response_model=AugmentedPartNoteRead,
    status_code=status.HTTP_201_CREATED,
)
async def create_augmented_part_note(
    augmented_part_id: int,
    payload: AugmentedPartNoteCreate,
    db: AsyncSession = Depends(get_db),
    actor: User = Depends(require_permission("augmented_parts:write")),
):
    ap = await augmented_part_crud.get(db, augmented_part_id)
    if ap is None:
        raise HTTPException(status_code=404, detail="Augmented part not found")
    return await augmented_part_note_crud.create(
        db, augmented_part=ap, author=actor, body=payload.body
    )