"""
Pydantic schemas for Shop system
"""
from datetime import datetime
from pydantic import BaseModel, Field
from typing import Any


# === Shop Items ===

class ShopItemBase(BaseModel):
    """Base schema for shop items"""
    item_type: str
    code: str
    name: str
    description: str | None = None
    price: int
    rarity: str = "common"
    asset_data: dict | None = None


class ShopItemCreate(ShopItemBase):
    """Schema for creating a shop item (admin)"""
    is_active: bool = True
    available_from: datetime | None = None
    available_until: datetime | None = None
    stock_limit: int | None = None


class ShopItemUpdate(BaseModel):
    """Schema for updating a shop item (admin)"""
    name: str | None = None
    description: str | None = None
    price: int | None = Field(None, ge=1)
    rarity: str | None = None
    asset_data: dict | None = None
    is_active: bool | None = None
    available_from: datetime | None = None
    available_until: datetime | None = None
    stock_limit: int | None = None


class ShopItemResponse(ShopItemBase):
    """Schema for shop item response"""
    id: int
    is_active: bool
    available_from: datetime | None
    available_until: datetime | None
    stock_limit: int | None
    stock_remaining: int | None
    created_at: datetime
    is_available: bool  # Computed property
    is_owned: bool = False  # Set by API based on user
    is_equipped: bool = False  # Set by API based on user

    class Config:
        from_attributes = True


# === Inventory ===

class InventoryItemResponse(BaseModel):
    """Schema for user inventory item"""
    id: int
    item: ShopItemResponse
    quantity: int
    equipped: bool
    purchased_at: datetime
    expires_at: datetime | None

    class Config:
        from_attributes = True


# === Purchases ===

class PurchaseRequest(BaseModel):
    """Schema for purchase request"""
    item_id: int
    quantity: int = Field(default=1, ge=1, le=10)


class PurchaseResponse(BaseModel):
    """Schema for purchase response"""
    success: bool
    item: ShopItemResponse
    quantity: int
    total_cost: int
    new_balance: int
    message: str


# === Consumables ===

class UseConsumableRequest(BaseModel):
    """Schema for using a consumable"""
    item_code: str  # 'skip', 'boost', 'wild_card', 'lucky_dice', 'copycat', 'undo'
    marathon_id: int
    assignment_id: int | None = None  # Required for skip, wild_card, copycat
    game_id: int | None = None  # Required for wild_card
    target_participant_id: int | None = None  # Required for copycat


class UseConsumableResponse(BaseModel):
    """Schema for consumable use response"""
    success: bool
    item_code: str
    remaining_quantity: int
    effect_description: str
    effect_data: dict | None = None


# === Equipment ===

class EquipItemRequest(BaseModel):
    """Schema for equipping an item"""
    inventory_id: int


class EquipItemResponse(BaseModel):
    """Schema for equip response"""
    success: bool
    item_type: str
    equipped_item: ShopItemResponse | None
    message: str


# === Coins ===

class CoinTransactionResponse(BaseModel):
    """Schema for coin transaction"""
    id: int
    amount: int
    transaction_type: str
    description: str | None
    reference_type: str | None
    reference_id: int | None
    created_at: datetime

    class Config:
        from_attributes = True


class CoinsBalanceResponse(BaseModel):
    """Schema for coins balance with recent transactions"""
    balance: int
    recent_transactions: list[CoinTransactionResponse]


class AdminCoinsRequest(BaseModel):
    """Schema for admin coin operations"""
    amount: int = Field(..., ge=1)
    reason: str = Field(..., min_length=1, max_length=500)


# === User Cosmetics ===

class UserCosmeticsResponse(BaseModel):
    """Schema for user's equipped cosmetics"""
    frame: ShopItemResponse | None = None
    title: ShopItemResponse | None = None
    name_color: ShopItemResponse | None = None
    background: ShopItemResponse | None = None


# === Certification ===

class CertificationRequestSchema(BaseModel):
    """Schema for requesting marathon certification"""
    pass  # No fields needed for now


class CertificationReviewRequest(BaseModel):
    """Schema for admin reviewing certification"""
    approve: bool
    rejection_reason: str | None = Field(None, max_length=1000)


class CertificationStatusResponse(BaseModel):
    """Schema for certification status"""
    marathon_id: int
    certification_status: str
    is_certified: bool
    certification_requested_at: datetime | None
    certified_at: datetime | None
    certified_by_nickname: str | None = None
    rejection_reason: str | None = None


# === Consumables Status ===

class ConsumablesStatusResponse(BaseModel):
    """Schema for participant's consumables status in a marathon"""
    skips_available: int  # From inventory
    skip_exiles_available: int = 0  # From inventory (skip with exile)
    skips_used: int  # In this marathon
    skips_remaining: int | None  # Based on marathon limit
    boosts_available: int  # From inventory
    has_active_boost: bool  # Currently activated (one-time for current assignment)
    boost_multiplier: float | None  # 1.5 if boost active
    wild_cards_available: int  # From inventory
    lucky_dice_available: int  # From inventory
    has_lucky_dice: bool  # Currently activated
    lucky_dice_multiplier: float | None  # Rolled multiplier if active
    copycats_available: int  # From inventory
    undos_available: int  # From inventory
    can_undo: bool  # Has drop data to undo


# === Admin Item Granting ===

class AdminGrantItemRequest(BaseModel):
    """Schema for admin granting item to user"""
    item_id: int
    quantity: int = Field(default=1, ge=1, le=100)
    reason: str = Field(..., min_length=1, max_length=500)