from pydantic import BaseModel, Field, ConfigDict
from typing import List, Optional
from datetime import datetime, timezone
import uuid


def _now_iso() -> str:
    return datetime.now(timezone.utc).isoformat()


# ---------- Users ----------
class UserCreate(BaseModel):
    email: str
    password: str
    name: str


class UserLogin(BaseModel):
    email: str
    password: str


class UserPublic(BaseModel):
    model_config = ConfigDict(extra="ignore")
    id: str
    email: str
    name: str
    is_admin: bool = False
    created_at: str


# ---------- Movies ----------
class MovieBase(BaseModel):
    title: str
    description: str = ""
    year: int = 2024
    duration_minutes: int = 0
    rating: str = "NR"  # G / PG / PG-13 / R / NR
    genres: List[str] = []
    cast: List[str] = []
    director: str = ""
    poster_url: str = ""
    backdrop_url: str = ""
    video_url: str = ""
    storage_type: str = "external"  # "external" or "local"
    storage_path: Optional[str] = None
    featured: bool = False


class MovieCreate(MovieBase):
    pass


class MovieUpdate(BaseModel):
    title: Optional[str] = None
    description: Optional[str] = None
    year: Optional[int] = None
    duration_minutes: Optional[int] = None
    rating: Optional[str] = None
    genres: Optional[List[str]] = None
    cast: Optional[List[str]] = None
    director: Optional[str] = None
    poster_url: Optional[str] = None
    backdrop_url: Optional[str] = None
    video_url: Optional[str] = None
    storage_type: Optional[str] = None
    storage_path: Optional[str] = None
    featured: Optional[bool] = None


class Movie(MovieBase):
    model_config = ConfigDict(extra="ignore")
    id: str = Field(default_factory=lambda: str(uuid.uuid4()))
    created_at: str = Field(default_factory=_now_iso)


# ---------- Watchlist ----------
class WatchlistItem(BaseModel):
    model_config = ConfigDict(extra="ignore")
    id: str = Field(default_factory=lambda: str(uuid.uuid4()))
    user_id: str
    movie_id: str
    added_at: str = Field(default_factory=_now_iso)


# ---------- Progress (Continue Watching) ----------
class ProgressUpsert(BaseModel):
    movie_id: str
    position_seconds: float
    duration_seconds: float


class Progress(BaseModel):
    model_config = ConfigDict(extra="ignore")
    user_id: str
    movie_id: str
    position_seconds: float
    duration_seconds: float
    updated_at: str = Field(default_factory=_now_iso)


# ---------- Requests ----------
class RequestCreate(BaseModel):
    title: str
    year: Optional[int] = None
    notes: str = ""


class RequestUpdate(BaseModel):
    status: str  # pending | fulfilled | rejected


class MovieRequest(BaseModel):
    model_config = ConfigDict(extra="ignore")
    id: str = Field(default_factory=lambda: str(uuid.uuid4()))
    user_id: str
    user_name: str = ""
    title: str
    year: Optional[int] = None
    notes: str = ""
    status: str = "pending"
    created_at: str = Field(default_factory=_now_iso)


# ---------- Auth Tokens ----------
class TokenResponse(BaseModel):
    access_token: str
    token_type: str = "bearer"
    user: UserPublic