from __future__ import annotations

from datetime import datetime
from typing import Any, Literal
from uuid import UUID

from pydantic import BaseModel, ConfigDict, Field


class RuntimeModel(BaseModel):
    model_config = ConfigDict(extra="forbid")


class RegistryRegistration(RuntimeModel):
    descriptor: dict[str, Any]
    manifest: dict[str, Any]


class MessageCommand(RuntimeModel):
    schema_version: str
    correlation_id: UUID
    conversation_id: UUID | None = None
    from_address: str = Field(min_length=1)
    to_addresses: list[str] = Field(min_length=1)
    body: str = Field(min_length=1)
    subject_refs: dict[str, str] = Field(default_factory=dict)


class EventCommand(RuntimeModel):
    schema_version: str
    correlation_id: UUID
    event_type: str = Field(pattern=r"^[a-z][a-z0-9]*(?:[.-][a-z0-9][a-z0-9-]*)+$")
    occurred_at: datetime
    subject_refs: dict[str, str] = Field(default_factory=dict)
    payload: dict[str, Any]


class Provenance(RuntimeModel):
    source_system: str
    source_ref: str
    schema_version: str
    content_hash: str | None = None
    indexed_at: datetime


class PortRecord(RuntimeModel):
    id: str
    data: dict[str, Any]
    provenance: Provenance


class PortCollection(RuntimeModel):
    items: list[PortRecord]
    next_cursor: str | None = None


class PortAccepted(RuntimeModel):
    id: str
    status: Literal["accepted", "duplicate"]
    correlation_id: UUID


class HealthResponse(RuntimeModel):
    service: str = "hub-core"
    status: Literal["ok"] = "ok"
    version: str


class ReadinessResponse(RuntimeModel):
    service: str = "hub-core"
    status: Literal["ok", "degraded"]
    checks: dict[str, str]