# -*- coding: utf-8 -*-
"""
===================================
Market data schemas
===================================
"""

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


class MarketIndex(BaseModel):
    """Market index data"""
    code: str = Field(..., description="Index code")
    name: str = Field(..., description="Index name")
    price: float = Field(..., description="Current price")
    change: Optional[float] = Field(None, description="Change amount")
    change_percent: Optional[float] = Field(None, description="Change percent")
    volume: Optional[float] = Field(None, description="Volume")
    amount: Optional[float] = Field(None, description="Amount")


class UpDownStats(BaseModel):
    """Up/down statistics"""
    up_count: int = Field(..., description="Number of rising stocks")
    down_count: int = Field(..., description="Number of falling stocks")
    flat_count: int = Field(..., description="Number of flat stocks")
    limit_up_count: int = Field(..., description="Number of limit up stocks")
    limit_down_count: int = Field(..., description="Number of limit down stocks")
    total_count: int = Field(..., description="Total count")


class SectorMomentum(BaseModel):
    """Sector momentum data"""
    code: str = Field(..., description="Sector code")
    name: str = Field(..., description="Sector name")
    momentum_score: float = Field(..., description="Momentum score")
    change_percent: float = Field(..., description="Change percent")
    turnover_rate: Optional[float] = Field(None, description="Turnover rate")
    leading_stock: Optional[str] = Field(None, description="Leading stock code")
    leading_stock_name: Optional[str] = Field(None, description="Leading stock name")
    momentum_value: Optional[float] = Field(None, description="Momentum value (n²/N)")
    momentum_value_change: Optional[float] = Field(None, description="Momentum value change from previous")
    rank: Optional[int] = Field(None, description="Current rank")
    rank_change: Optional[int] = Field(None, description="Rank change from previous")


class StockMomentum(BaseModel):
    """Stock momentum recommendation"""
    code: str = Field(..., description="Stock code")
    name: str = Field(..., description="Stock name")
    momentum_score: float = Field(..., description="Momentum score")
    change_percent: float = Field(..., description="Change percent")
    sector: Optional[str] = Field(None, description="Belonging sector")
    recommendation: Optional[str] = Field(None, description="Recommendation level")


class NewHighLowStock(BaseModel):
    """New high/low stock"""
    code: str = Field(..., description="Stock code")
    name: str = Field(..., description="Stock name")
    price: float = Field(..., description="Current price")
    change_percent: float = Field(..., description="Change percent")
    days_to_high: Optional[int] = Field(None, description="Days to new high")
    days_to_low: Optional[int] = Field(None, description="Days to new low")
    high_date: Optional[str] = Field(None, description="High date")
    low_date: Optional[str] = Field(None, description="Low date")


class PriceDistribution(BaseModel):
    """Price distribution statistics"""
    range_label: str = Field(..., description="Price range label")
    count: int = Field(..., description="Stock count in this range")
    percent: float = Field(..., description="Percentage")


class SentimentIndicator(BaseModel):
    """Market sentiment indicator"""
    name: str = Field(..., description="Indicator name")
    value: float = Field(..., description="Current value")
    change: Optional[float] = Field(None, description="Change from previous")
    level: Optional[str] = Field(None, description="Sentiment level (high/medium/low)")
    description: Optional[str] = Field(None, description="Description")


class MarketOverview(BaseModel):
    """Market overview response"""
    indices: List[MarketIndex] = Field(default_factory=list, description="Major indices")
    updown_stats: UpDownStats = Field(..., description="Up/down statistics")
    sentiment: List[SentimentIndicator] = Field(default_factory=list, description="Sentiment indicators")
    update_time: str = Field(..., description="Update time")


class SectorListResponse(BaseModel):
    """Sector list response"""
    items: List[SectorMomentum] = Field(default_factory=list, description="Sector list")
    total: int = Field(..., description="Total count")


class StockMomentumResponse(BaseModel):
    """Stock momentum response"""
    items: List[StockMomentum] = Field(default_factory=list, description="Stock list")
    total: int = Field(..., description="Total count")


class NewHighLowResponse(BaseModel):
    """New high/low response"""
    new_high: List[NewHighLowStock] = Field(default_factory=list, description="New high stocks")
    new_low: List[NewHighLowStock] = Field(default_factory=list, description="New low stocks")
    high_count: int = Field(..., description="Total new high count")
    low_count: int = Field(..., description="Total new low count")


class PriceDistributionResponse(BaseModel):
    """Price distribution response"""
    items: List[PriceDistribution] = Field(default_factory=list, description="Distribution items")
    total_count: int = Field(..., description="Total stock count")


class KLineChartResponse(BaseModel):
    """K-line chart data for ECharts"""
    categoryData: List[str] = Field(default_factory=list, description="Date list")
    values: List[List[float]] = Field(default_factory=list, description="K-line values [open, close, low, high, volume]")
    volumes: List[List[float]] = Field(default_factory=list, description="Volume data [index, volume, change_sign]")
    stock_name: Optional[str] = Field(None, description="Stock name")