from __future__ import annotations

from dataclasses import dataclass
from datetime import datetime, timezone
from enum import StrEnum
from typing import Any


class ApplicationStatus(StrEnum):
    NEW = "new"
    IN_PROGRESS = "in_progress"
    NEED_INFO = "need_info"
    DONE = "done"
    REJECTED = "rejected"


class ExternalSyncStatus(StrEnum):
    NOT_SENT = "not_sent"
    SENT = "sent"
    FAILED = "failed"
    DISABLED = "disabled"


@dataclass(slots=True)
class ApplicationCreate:
    customer_id: int | None
    customer_name: str
    chat_id: int | None
    category: str
    description: str
    attachments_json: str = "[]"
    source: str = "bot"


@dataclass(slots=True)
class ApplicationRecord:
    id: int
    customer_id: int | None
    customer_name: str
    chat_id: int | None
    category: str
    description: str
    attachments_json: str
    status: str
    external_sync_status: str
    external_id: str | None
    external_error: str | None
    source: str
    created_at: str
    updated_at: str


@dataclass(slots=True)
class ApplicationEventRecord:
    id: int
    application_id: int
    event_type: str
    actor: str
    details_json: str
    created_at: str


@dataclass(slots=True)
class ChatRecord:
    chat_id: int
    chat_type: str
    title: str | None
    username: str | None
    last_seen_at: str
    is_active: int


@dataclass(slots=True)
class ExternalCreateResult:
    ok: bool
    external_id: str | None = None
    error: str | None = None
    raw_response: dict[str, Any] | None = None


def utc_now_iso() -> str:
    return datetime.now(timezone.utc).replace(microsecond=0).isoformat().replace("+00:00", "Z")