from pydantic import BaseModel, Field
from typing import Optional, List, Dict, Any


# ============================================================
# AUTH / USERS
# ============================================================
class UserCreate(BaseModel):
    username: str
    password: str
    display_name: Optional[str] = ""
    role: Optional[str] = "personal"


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


class UserOut(BaseModel):
    id: int
    username: str
    display_name: str
    role: str
    created_at: str

    class Config:
        from_attributes = True


class Token(BaseModel):
    access_token: str
    token_type: str = "bearer"
    user: UserOut


# ============================================================
# WORKOUT TYPES
# ============================================================
class WorkoutTypeBase(BaseModel):
    name: str
    sort_order: Optional[int] = 0


class WorkoutTypeCreate(WorkoutTypeBase):
    sync_id: Optional[str] = None


class WorkoutTypeOut(WorkoutTypeBase):
    id: int
    sync_id: str
    created_at: str

    class Config:
        from_attributes = True


# ============================================================
# METRIC TYPES
# ============================================================
class MetricTypeBase(BaseModel):
    name: str
    unit: Optional[str] = "см"
    category: Optional[str] = "body"
    sort_order: Optional[int] = 0


class MetricTypeCreate(MetricTypeBase):
    sync_id: Optional[str] = None


class MetricTypeOut(MetricTypeBase):
    id: int
    sync_id: str
    created_at: str

    class Config:
        from_attributes = True


# ============================================================
# CLIENTS
# ============================================================
class ClientBase(BaseModel):
    full_name: str
    birth_date: Optional[str] = None
    goal: Optional[str] = ""
    notes: Optional[str] = ""
    color: Optional[str] = None
    is_active: Optional[int] = 1


class ClientCreate(ClientBase):
    sync_id: Optional[str] = None


class ClientUpdate(BaseModel):
    full_name: Optional[str] = None
    birth_date: Optional[str] = None
    goal: Optional[str] = None
    notes: Optional[str] = None
    color: Optional[str] = None
    is_active: Optional[int] = None


class ClientOut(ClientBase):
    id: int
    sync_id: str
    owner_id: Optional[int] = None
    created_at: str
    updated_at: str

    class Config:
        from_attributes = True


# ============================================================
# EXERCISES
# ============================================================
class ExerciseBase(BaseModel):
    name: str
    workout_type_id: Optional[int] = None


class ExerciseCreate(ExerciseBase):
    sync_id: Optional[str] = None


class ExerciseUpdate(BaseModel):
    name: Optional[str] = None
    workout_type_id: Optional[int] = None


class ExerciseOut(ExerciseBase):
    id: int
    sync_id: str
    owner_id: Optional[int] = None
    created_at: str
    updated_at: str

    class Config:
        from_attributes = True


# ============================================================
# DROPSET ITEMS
# ============================================================
class DropsetItemBase(BaseModel):
    weight: float = Field(gt=0)
    reps: int = Field(gt=0)
    sort_order: int = 0


class DropsetItemCreate(DropsetItemBase):
    pass


class DropsetItemOut(DropsetItemBase):
    id: int

    class Config:
        from_attributes = True


# ============================================================
# SETS
# ============================================================
class SetBase(BaseModel):
    is_dropset: int = 0
    weight: Optional[float] = None
    reps: Optional[int] = None
    rating: Optional[int] = Field(None, ge=1, le=5)
    notes: Optional[str] = ""
    sort_order: int = 0
    timestamp: str


class SetCreate(SetBase):
    sync_id: Optional[str] = None
    dropset_items: List[DropsetItemCreate] = Field(default_factory=list)


class SetOut(SetBase):
    id: int
    sync_id: str
    created_at: str
    dropset_items: List[DropsetItemOut] = Field(default_factory=list)

    class Config:
        from_attributes = True


# ============================================================
# WORKOUT EXERCISES
# ============================================================
class WorkoutExerciseBase(BaseModel):
    exercise_name: str
    exercise_id: Optional[int] = None
    exercise_sync_id: Optional[str] = None
    sort_order: int = 0


class WorkoutExerciseCreate(WorkoutExerciseBase):
    sync_id: Optional[str] = None
    sets: List[SetCreate] = Field(default_factory=list)


class WorkoutExerciseOut(WorkoutExerciseBase):
    id: int
    sync_id: str
    created_at: str
    sets: List[SetOut] = Field(default_factory=list)

    class Config:
        from_attributes = True


# ============================================================
# CARDIO
# ============================================================
class CardioBase(BaseModel):
    cardio_type: str
    purpose: str
    duration: Optional[int] = None
    distance: Optional[float] = None
    speed: Optional[float] = None
    incline: Optional[float] = None
    resistance: Optional[int] = None
    notes: Optional[str] = ""
    sort_order: int = 0


class CardioCreate(CardioBase):
    sync_id: Optional[str] = None


class CardioOut(CardioBase):
    id: int
    sync_id: str
    created_at: str

    class Config:
        from_attributes = True


# ============================================================
# WORKOUTS
# ============================================================
class WorkoutBase(BaseModel):
    start_time: str
    end_time: Optional[str] = None
    notes: Optional[str] = ""
    workout_type_id: Optional[int] = None


class WorkoutCreate(WorkoutBase):
    sync_id: Optional[str] = None
    client_id: Optional[int] = None
    client_sync_id: Optional[str] = None
    workout_exercises: List[WorkoutExerciseCreate] = Field(default_factory=list)
    cardio_sessions: List[CardioCreate] = Field(default_factory=list)


class WorkoutUpdate(BaseModel):
    workout_type_id: Optional[int] = None
    end_time: Optional[str] = None
    notes: Optional[str] = None
    synced: Optional[int] = None


class WorkoutOut(WorkoutBase):
    id: int
    sync_id: str
    owner_id: Optional[int] = None
    client_id: Optional[int] = None
    synced: int
    created_at: str
    updated_at: str
    workout_exercises: List[WorkoutExerciseOut] = Field(default_factory=list)
    cardio_sessions: List[CardioOut] = Field(default_factory=list)

    class Config:
        from_attributes = True


# ============================================================
# BODY METRIC VALUES
# ============================================================
class BodyMetricValueBase(BaseModel):
    value: float


class BodyMetricValueCreate(BodyMetricValueBase):
    metric_type_id: Optional[int] = None
    metric_type_sync_id: Optional[str] = None


class BodyMetricValueOut(BodyMetricValueBase):
    id: int
    metric_type_id: int

    class Config:
        from_attributes = True


# ============================================================
# BODY METRICS
# ============================================================
class BodyMetricBase(BaseModel):
    metric_date: str
    notes: Optional[str] = ""


class BodyMetricCreate(BodyMetricBase):
    sync_id: Optional[str] = None
    client_id: Optional[int] = None
    client_sync_id: Optional[str] = None
    values: List[BodyMetricValueCreate] = Field(default_factory=list)


class BodyMetricOut(BodyMetricBase):
    id: int
    sync_id: str
    owner_id: Optional[int] = None
    client_id: Optional[int] = None
    created_at: str
    values: List[BodyMetricValueOut] = Field(default_factory=list)

    class Config:
        from_attributes = True


# ============================================================
# SYNC
# ============================================================
class SyncPayload(BaseModel):
    clients: List[ClientCreate] = Field(default_factory=list)
    exercises: List[ExerciseCreate] = Field(default_factory=list)
    workouts: List[WorkoutCreate] = Field(default_factory=list)
    body_metrics: List[BodyMetricCreate] = Field(default_factory=list)


class SyncResponse(BaseModel):
    status: str
    created: Dict[str, int]
    updated: Dict[str, int]
    warnings: List[str] = Field(default_factory=list)