from __future__ import annotations

from datetime import datetime

from pydantic import BaseModel


class FileSummary(BaseModel):
    id: str
    directory_id: str
    name: str
    mime_type: str | None
    size_bytes: int
    current_version_id: str | None
    created_at: datetime
    updated_at: datetime


class PreviewArtifactSummary(BaseModel):
    id: str
    artifact_type: str
    blob_id: str
    status: str
    created_at: datetime
    updated_at: datetime


class FileReplicaSummary(BaseModel):
    id: str
    blob_id: str
    backend_id: str
    backend_name: str
    backend_type: str
    backend_stability_class: str
    backend_enabled: bool
    storage_key: str
    status: str
    size_bytes: int
    checksum: str | None
    etag: str | None
    last_verified_at: datetime | None
    created_at: datetime
    updated_at: datetime


class FilePlacementBackendSummary(BaseModel):
    id: str
    name: str
    type: str
    stability_class: str
    read_priority: int
    write_priority: int
    is_enabled: bool


class FileDetailResponse(BaseModel):
    file: FileSummary
    preview_artifacts: list[PreviewArtifactSummary] = []
    replicas: list[FileReplicaSummary] = []
    placement_file_class: str | None = None
    desired_backends: list[FilePlacementBackendSummary] = []
    ready_replica_backend_ids: list[str] = []
    missing_backend_ids: list[str] = []


class DeletedFileSummary(FileSummary):
    deleted_at: datetime


class RecycleBinResponse(BaseModel):
    items: list[DeletedFileSummary]


class FileMutationResponse(BaseModel):
    ok: bool = True
    file: FileSummary | DeletedFileSummary


class RenameFileRequest(BaseModel):
    name: str


class MoveFileRequest(BaseModel):
    target_parent_id: str