"""Agent message schemas.

The base shapes come from hub-core. STATE-WP-0093 extends them locally with
broadcast kinds, expiry, supersede and per-reader receipt fields; direct
messages keep the hub-core semantics (the new fields stay at their defaults).
"""
import uuid
from datetime import datetime

from hub_core.schemas.agent_message import MessageCreate as _HubMessageCreate
from hub_core.schemas.agent_message import MessageRead as _HubMessageRead
from hub_core.schemas.agent_message import MessageReply
from pydantic import BaseModel


class MessageCreate(_HubMessageCreate):
    # Only meaningful for broadcasts: news | standing. A broadcast without a
    # kind defaults to ``news``; direct messages must leave it unset or
    # ``message``.
    kind: str | None = None
    expires_at: datetime | None = None
    supersedes_id: uuid.UUID | None = None


class MessageRead(_HubMessageRead):
    kind: str = "message"
    expires_at: datetime | None = None
    supersedes_id: uuid.UUID | None = None
    # Per-reader receipt state; populated for broadcasts when the request is
    # scoped to a reader (``to_agent`` on list, ``reader`` on mark-read/ack).
    # For such responses ``read_at`` is the reader's own read time.
    reader: str | None = None
    delivered_at: datetime | None = None
    acknowledged_at: datetime | None = None


class MessageMarkRead(BaseModel):
    reader: str | None = None
    ack: bool = False


class MessageAck(BaseModel):
    agent: str


class NoticeStatus(BaseModel):
    id: uuid.UUID
    from_agent: str
    subject: str
    body: str
    created_at: datetime
    expires_at: datetime | None = None
    supersedes_id: uuid.UUID | None = None
    acknowledged: list[str] = []
    delivered_only: list[str] = []
    unreached: list[str] = []
    acked_count: int = 0
    delivered_only_count: int = 0
    unreached_count: int = 0


class StandingNoticeDigest(BaseModel):
    id: uuid.UUID
    subject: str
    expires_at: datetime | None = None
    acked: int = 0
    pending: int = 0


__all__ = [
    "MessageAck",
    "MessageCreate",
    "MessageMarkRead",
    "MessageRead",
    "MessageReply",
    "NoticeStatus",
    "StandingNoticeDigest",
]