"""Pydantic-схемы админ-API (/api/v1/admin, гейт require_admin)."""

import uuid
from datetime import datetime

from pydantic import BaseModel, Field

SlugPattern = r"^[a-z0-9]([a-z0-9._-]*[a-z0-9])?$"


# --- sources / keys ---

class SourceIn(BaseModel):
    name: str = Field(min_length=2, max_length=64, pattern=SlugPattern)
    label: str | None = Field(None, max_length=120)
    description: str | None = None


class SourceOut(BaseModel):
    id: int
    name: str
    label: str | None
    description: str | None
    created_at: datetime
    # архив: дата метки; None у живых записей (UI-списки архив не показывают)
    deleted_at: datetime | None = None
    keys_count: int = 0
    types_count: int = 0


class KeyIn(BaseModel):
    name: str = Field(min_length=1, max_length=120)


class KeyOut(BaseModel):
    id: int
    name: str
    token_hint: str
    created_at: datetime
    last_used_at: datetime | None
    revoked_at: datetime | None


class KeyCreated(KeyOut):
    """Токен печатается/показывается МИНУС один раз — только в этом ответе."""

    token: str


# --- types ---

class TypeIn(BaseModel):
    source_id: int
    subject: str = Field(min_length=1, max_length=64, pattern=SlugPattern)
    action: str = Field(min_length=1, max_length=64, pattern=SlugPattern)
    payload_schema: dict | None = None
    description: str | None = None


class TypeOut(TypeIn):
    id: int
    source_name: str
    created_at: datetime
    deleted_at: datetime | None = None


# --- targets ---

class TargetIn(BaseModel):
    channel: str = Field(pattern=r"^(telegram|email|s2s|internal_log)$")
    name: str = Field(min_length=1, max_length=120)
    description: str | None = None
    config: dict = {}


class TargetOut(TargetIn):
    id: int
    enabled: bool
    created_at: datetime
    deleted_at: datetime | None = None


class TargetPatch(BaseModel):
    """Частичное обновление цели; канал не меняется (ссылки из правил)."""

    name: str | None = Field(default=None, min_length=1, max_length=120)
    description: str | None = None
    config: dict | None = None
    enabled: bool | None = None


# --- rules ---

class RuleActionIn(BaseModel):
    channel: str = Field(pattern=r"^(telegram|email|s2s|internal_log|user|push)$")
    target_id: int | None = None
    template: str | None = None


class RuleActionOut(RuleActionIn):
    id: int
    target_name: str | None = None


class RuleIn(BaseModel):
    name: str = Field(min_length=1, max_length=120)
    conditions: dict = {}
    template: str | None = None
    throttle_seconds: int | None = Field(None, ge=1)
    weight: int = 0
    actions: list[RuleActionIn] = Field(min_length=1)


class RuleOut(RuleIn):
    id: int
    enabled: bool
    created_at: datetime
    actions: list[RuleActionOut]
    deleted_at: datetime | None = None


class RulePatch(BaseModel):
    name: str | None = Field(None, max_length=120)
    enabled: bool | None = None
    template: str | None = None
    throttle_seconds: int | None = Field(None, ge=1)
    weight: int | None = None
    conditions: dict | None = None
    actions: list[RuleActionIn] | None = None


# --- events / deliveries ---

class DeliveryOut(BaseModel):
    id: int
    event_id: uuid.UUID
    rule_id: int | None
    channel: str
    target_id: int | None
    target_name: str | None = None
    # Канал user — кому из пользователей доставлено (sub gnexus-auth).
    recipient_user_id: str | None = None
    status: str
    attempts: int
    last_error: str | None
    next_retry_at: datetime | None
    rendered_message: str | None
    created_at: datetime
    delivered_at: datetime | None


class AdminEventOut(BaseModel):
    id: uuid.UUID
    source_id: int
    source_name: str
    subject: str
    action: str
    priority: str
    status: str
    payload: dict
    dedup_key: str | None
    created_at: datetime
    expires_at: datetime | None
    deliveries: list[DeliveryOut]

# --- настройки (оверрайды .env; секреты write-only, docs/06) ---

class SettingOut(BaseModel):
    key: str
    section: str
    label: str
    kind: str  # "str" | "int" | "bool" | "secret"
    help: str = ""
    options: list[str] = []
    # фактическое значение; для secret — всегда null (write-only)
    value: str | None = None
    # задан ли ключ (override из БД или дефолт .env)
    set: bool


class SettingsPut(BaseModel):
    values: dict[str, str | None]