"""LLM model configurations and workflow enums for enhanced reporting."""

from dataclasses import dataclass, field
from enum import Enum
from typing import List, Optional

from langchain_core.language_models import BaseChatModel

from utils.llm.provider_factory import LLMProviderFactory

# ============================================================================
# Investment Style and Phase Configuration (Feature 002)
# ============================================================================


class InvestmentStyle(str, Enum):
    """Investment style profiles that configure analysis emphasis and defaults."""

    LONG_TERM = "long_term"
    """Long-term investment focus (quarters to years).
    - Default timeframe: Weekly (1w)
    - Analysis priority: Fundamental > Technical
    - Review cycle: Quarterly
    - Suitable timeframes: 1w, 1mo, 3mo, 1y, 5y
    """

    SWING_TRADING = "swing_trading"
    """Swing trading focus (weeks to months).
    - Default timeframe: Daily (1d)
    - Analysis priority: Technical + Fundamental (balanced)
    - Review cycle: Weekly
    - Suitable timeframes: 1d, 1w, 1mo
    """


class AnalysisPhase(str, Enum):
    """Workflow phases that can be selectively executed."""

    TECHNICAL = "technical"
    """Technical Analysis Phase - Indicators, patterns, trends (~15-20s)"""

    FUNDAMENTAL = "fundamental"
    """Fundamental Analysis Phase - Financial metrics, valuation (~30-40s)"""

    SENTIMENT = "sentiment"
    """Sentiment Analysis Phase - Social & news sentiment (~20-30s)"""

    RESEARCH_SYNTHESIS = "research_synthesis"
    """Research Synthesis Phase - Integrated perspective (~15-20s)"""

    RISK = "risk"
    """Risk Assessment Phase - Risk scores, volatility (~15-20s)"""

    DECISION = "decision"
    """Portfolio Decision Phase - Final BUY/SELL/HOLD (~15-20s)"""


@dataclass
class PhaseConfiguration:
    """Configuration for phase-based workflow execution."""

    investment_style: InvestmentStyle = InvestmentStyle.LONG_TERM
    """User's investment approach (long-term vs swing trading)."""

    enabled_phases: List[AnalysisPhase] = field(
        default_factory=lambda: [
            AnalysisPhase.TECHNICAL,
            AnalysisPhase.FUNDAMENTAL,
            AnalysisPhase.SENTIMENT,
            AnalysisPhase.RESEARCH_SYNTHESIS,
            AnalysisPhase.RISK,
            AnalysisPhase.DECISION,
        ]
    )
    """List of workflow phases to execute."""

    timeframe: str = "1w"
    """Selected analysis timeframe (1d, 1w, 1mo, 3mo, 1y, 5y)."""

    chart_period_days: int = 180
    """Number of days of historical data to fetch for charts."""

    educational_mode: bool = True
    """Whether to include plain-English explanations and tooltips."""

    def validate(self) -> List[str]:
        """Validate configuration and return list of errors.

        Returns:
            List of validation error messages (empty if valid)
        """
        errors = []

        # At least one phase must be enabled
        if not self.enabled_phases:
            errors.append("At least one analysis phase must be enabled")
            return errors

        phases_set = set(self.enabled_phases)
        analysis_phases = {
            AnalysisPhase.TECHNICAL,
            AnalysisPhase.FUNDAMENTAL,
            AnalysisPhase.SENTIMENT,
        }

        # RESEARCH_SYNTHESIS requires at least one analysis phase
        if AnalysisPhase.RESEARCH_SYNTHESIS in phases_set:
            if not (analysis_phases & phases_set):
                errors.append(
                    "Research Synthesis phase requires at least one analysis phase "
                    "(Technical, Fundamental, or Sentiment) to be enabled"
                )

        # RISK requires at least one analysis phase
        if AnalysisPhase.RISK in phases_set:
            if not (analysis_phases & phases_set):
                errors.append(
                    "Risk Assessment phase requires at least one analysis phase "
                    "(Technical, Fundamental, or Sentiment) to be enabled"
                )

        # DECISION requires RESEARCH_SYNTHESIS
        if AnalysisPhase.DECISION in phases_set:
            if AnalysisPhase.RESEARCH_SYNTHESIS not in phases_set:
                errors.append(
                    "Portfolio Decision phase requires Research Synthesis phase to be enabled"
                )

        return errors

    @classmethod
    def from_investment_style(cls, style: InvestmentStyle) -> "PhaseConfiguration":
        """Create configuration with defaults for investment style.

        Args:
            style: Investment style to configure for

        Returns:
            PhaseConfiguration with style-appropriate defaults
        """
        if style == InvestmentStyle.LONG_TERM:
            return cls(
                investment_style=style,
                timeframe="1w",
                chart_period_days=365,  # 1 year of data
                enabled_phases=[
                    AnalysisPhase.TECHNICAL,
                    AnalysisPhase.FUNDAMENTAL,
                    AnalysisPhase.SENTIMENT,
                    AnalysisPhase.RESEARCH_SYNTHESIS,
                    AnalysisPhase.RISK,
                    AnalysisPhase.DECISION,
                ],
            )
        else:  # SWING_TRADING
            return cls(
                investment_style=style,
                timeframe="1d",
                chart_period_days=90,  # 3 months of data
                enabled_phases=[
                    AnalysisPhase.TECHNICAL,
                    AnalysisPhase.FUNDAMENTAL,
                    AnalysisPhase.RESEARCH_SYNTHESIS,
                    AnalysisPhase.DECISION,
                ],  # Skip SENTIMENT and RISK for faster execution
            )


# ============================================================================
# LLM Model Configurations
# ============================================================================

# Per-agent LLM model configurations
# Format: {"provider": str, "model": str, "temperature": float}

AGENT_MODELS = {
    # Technical Analysis Agents (User Story 1)
    "indicator_agent": {
        "provider": "openai",
        "model": "gpt-4o-mini",
        "temperature": 0.1,
    },
    "pattern_agent": {
        "provider": "openai",
        "model": "gpt-4o",  # Needs vision for chart analysis
        "temperature": 0.1,
    },
    "trend_agent": {
        "provider": "openai",
        "model": "gpt-4o",
        "temperature": 0.1,
    },
    "decision_agent": {
        "provider": "openai",
        "model": "gpt-4o",
        "temperature": 0.1,
    },
    # Fundamental Analysis Agents (User Story 2)
    "fundamentals_agent": {
        "provider": "openai",
        "model": "gpt-4o-mini",
        "temperature": 0.1,
    },
    "sentiment_agent": {
        "provider": "openai",
        "model": "gpt-4o-mini",
        "temperature": 0.2,
    },
    "news_agent": {
        "provider": "openai",
        "model": "gpt-4o-mini",
        "temperature": 0.1,
    },
    "technical_analyst": {
        "provider": "openai",
        "model": "gpt-4o",
        "temperature": 0.1,
    },
    # Management Agents (User Story 2)
    "researcher_team": {
        "provider": "openai",
        "model": "gpt-4o",
        "temperature": 0.3,  # Higher for debate/creativity
    },
    "risk_manager": {
        "provider": "openai",
        "model": "gpt-4o",
        "temperature": 0.1,
    },
    "portfolio_manager": {
        "provider": "openai",
        "model": "gpt-4o",
        "temperature": 0.1,
    },
}

# Default models for each provider (used when provider is overridden but model is not)
DEFAULT_MODELS_BY_PROVIDER = {
    "openai": "gpt-4o-mini",
    "anthropic": "claude-3-5-sonnet-20241022",
    "huggingface": "meta-llama/Llama-3.3-70B-Instruct",  # Llama 3.3 available via HF Inference Providers
    "qwen": "qwen2.5-72b-instruct",
}


def get_model(
    agent_name: str,
    routing_policy: Optional[str] = None,
    runtime_config: Optional[dict] = None,
) -> BaseChatModel:
    """
    Get configured LLM model for a specific agent.

    Args:
        agent_name: Name of the agent (e.g., "indicator_agent", "portfolio_manager")
        routing_policy: Optional routing policy override for HuggingFace
                       (auto, fastest, cheapest, or provider name)
        runtime_config: Optional runtime configuration with llm_provider/llm_model overrides

    Returns:
        Configured LangChain chat model

    Raises:
        ValueError: If agent_name is not found in configuration
    """
    if agent_name not in AGENT_MODELS:
        raise ValueError(
            f"Agent '{agent_name}' not found in model configuration. "
            f"Available agents: {', '.join(AGENT_MODELS.keys())}"
        )

    config = AGENT_MODELS[agent_name]

    # Apply runtime overrides if provided
    if runtime_config:
        provider = runtime_config.get("llm_provider", config["provider"])

        # If provider is overridden but model is not specified, use default model for that provider
        if "llm_provider" in runtime_config and "llm_model" not in runtime_config:
            model = DEFAULT_MODELS_BY_PROVIDER.get(provider, config["model"])
        else:
            model = runtime_config.get("llm_model", config["model"])
    else:
        provider = config["provider"]
        model = config["model"]

    # Use routing_policy from config if not overridden
    if routing_policy is None:
        routing_policy = config.get("routing_policy")

    return LLMProviderFactory.create(
        provider=provider,
        model=model,
        temperature=config["temperature"],
        routing_policy=routing_policy,
    )


# ============================================================================
# Valuation Dashboard Models (Feature 004)
# ============================================================================


class ChartType(str, Enum):
    """Type of fundamental chart in the valuation dashboard."""

    PE_RATIO = "PE_RATIO"
    """Price-to-Earnings ratio over time"""

    PB_RATIO = "PB_RATIO"
    """Price-to-Book ratio over time"""

    PS_RATIO = "PS_RATIO"
    """Price-to-Sales ratio over time"""

    EV_EBITDA = "EV_EBITDA"
    """EV/EBITDA ratio over time"""

    PROFIT_MARGINS = "PROFIT_MARGINS"
    """Multi-line chart (Gross, Operating, Net margins)"""

    ROE = "ROE"
    """Return on Equity over time"""

    REVENUE_EARNINGS_GROWTH = "REVENUE_EARNINGS_GROWTH"
    """YoY growth rates for revenue and earnings"""

    FREE_CASH_FLOW = "FREE_CASH_FLOW"
    """Free cash flow over time"""

    DEBT_TO_EQUITY = "DEBT_TO_EQUITY"
    """Debt-to-Equity ratio over time"""


class DataAvailability(str, Enum):
    """Status of data completeness for a chart."""

    COMPLETE = "complete"
    """All data available, chart rendered successfully"""

    PARTIAL = "partial"
    """Some data missing, chart rendered with gaps"""

    UNAVAILABLE = "unavailable"
    """No data available, placeholder chart shown"""

    ERROR = "error"
    """Error occurred during data fetch or calculation"""


@dataclass
class DataPoint:
    """Single (timestamp, value) pair in a time series."""

    timestamp: str  # ISO format datetime string
    value: Optional[float]  # None if unavailable for this period


@dataclass
class DataSeries:
    """Time-series data for a single line on a chart."""

    name: str  # Series name (e.g., "Gross Margin")
    data_points: List[DataPoint]
    data_frequency: str  # "quarterly", "annual", "monthly"
    color: Optional[str] = None  # Hex color code (e.g., "#2962FF")
    line_style: Optional[str] = None  # Line style ("-", "--", ":")


@dataclass
class ChartData:
    """Represents a single fundamental metric chart."""

    chart_type: ChartType
    title: str
    data_series: List[DataSeries]
    x_label: str
    y_label: str
    unit: str  # "ratio", "%", "USD millions"
    data_availability: DataAvailability
    file_path: Optional[str] = None  # Path to generated chart PNG
    legend_enabled: bool = True
    error_message: Optional[str] = None
    rendering_hint: Optional[str] = None


@dataclass
class GridConfig:
    """Grid dimensions for a specific screen size."""

    columns: int
    rows: int
    min_width: Optional[int] = None  # Minimum column width in pixels


@dataclass
class DashboardLayout:
    """Configuration for responsive grid layout."""

    desktop_config: GridConfig = field(
        default_factory=lambda: GridConfig(columns=2, rows=4, min_width=300)
    )
    tablet_config: GridConfig = field(
        default_factory=lambda: GridConfig(columns=2, rows=4, min_width=300)
    )
    mobile_config: GridConfig = field(
        default_factory=lambda: GridConfig(columns=1, rows=8)
    )


@dataclass
class ValuationDashboard:
    """Container for the complete set of fundamental analysis charts."""

    ticker: str
    start_date: str  # ISO format datetime string
    end_date: str  # ISO format datetime string
    charts: List[ChartData]
    layout_config: DashboardLayout
    generation_timestamp: str  # ISO format datetime string
    data_source: str  # "yfinance", "alpha_vantage", "hybrid"


@dataclass
class ValuationMetrics:
    """Valuation ratio data for charts and analysis."""

    pe_ratio: Optional[float] = None  # None if negative earnings
    pb_ratio: Optional[float] = None  # None if negative equity
    ps_ratio: Optional[float] = None
    ev_ebitda: Optional[float] = None  # None if negative EBITDA
    peg_ratio: Optional[float] = None
    market_cap: Optional[float] = None  # USD millions


@dataclass
class ProfitabilityMetrics:
    """Profitability and efficiency data."""

    gross_margin: Optional[float] = None  # Percentage (0-100)
    operating_margin: Optional[float] = None  # Percentage (0-100)
    net_margin: Optional[float] = None  # Percentage (0-100)
    roe: Optional[float] = None  # Percentage, None if equity <= 0


@dataclass
class GrowthMetrics:
    """Year-over-year growth rates."""

    revenue_growth_yoy: Optional[float] = None  # Percentage
    earnings_growth_yoy: Optional[float] = None  # Percentage


@dataclass
class CashFlowMetrics:
    """Cash flow data."""

    free_cash_flow: Optional[float] = None  # USD millions
    operating_cash_flow: Optional[float] = None  # USD millions
    capex: Optional[float] = None  # USD millions


@dataclass
class LeverageMetrics:
    """Financial leverage and debt data."""

    debt_to_equity: Optional[float] = None  # None if equity <= 0
    total_debt: Optional[float] = None  # USD millions
    total_equity: Optional[float] = None  # USD millions


@dataclass
class BalanceSheet:
    """Balance sheet data for agent tables."""

    total_assets: Optional[float] = None  # USD millions
    total_liabilities: Optional[float] = None  # USD millions
    total_equity: Optional[float] = None  # USD millions
    working_capital: Optional[float] = None  # USD millions
    cash_and_equivalents: Optional[float] = None  # USD millions
    retained_earnings: Optional[float] = None  # USD millions


@dataclass
class IncomeStatement:
    """Income statement data for agent tables."""

    total_revenue: Optional[float] = None  # USD millions
    gross_profit: Optional[float] = None  # USD millions
    net_income: Optional[float] = None  # USD millions
    ebitda: Optional[float] = None  # USD millions
    basic_eps: Optional[float] = None  # USD


@dataclass
class CashFlowStatement:
    """Cash flow statement data for agent tables."""

    operating_cash_flow: Optional[float] = None  # USD millions
    free_cash_flow: Optional[float] = None  # USD millions
    capex: Optional[float] = None  # USD millions


@dataclass
class FinancialStatements:
    """Complete financial statement data."""

    balance_sheet: BalanceSheet
    income_statement: IncomeStatement
    cash_flow_statement: CashFlowStatement


@dataclass
class FundamentalMetrics:
    """Comprehensive collection of fundamental data."""

    ticker: str
    as_of_date: str  # ISO format datetime string
    valuation: ValuationMetrics
    profitability: ProfitabilityMetrics
    growth: GrowthMetrics
    cash_flow: CashFlowMetrics
    leverage: LeverageMetrics
    financial_statements: FinancialStatements
    data_sources: dict  # Mapping of metric → data source used


@dataclass
class ContentSection:
    """Hierarchical section in agent response."""

    heading: str  # Markdown heading (e.g., "## Company Overview")
    level: int  # Heading level (1-4)
    content: str  # Markdown-formatted content
    subsections: List["ContentSection"] = field(default_factory=list)


@dataclass
class DataTable:
    """Formatted table presenting data."""

    headers: List[str]
    rows: List[List[str]]  # Each row is list of cell values
    title: Optional[str] = None
    format_hints: Optional[dict] = None  # Column formatting hints


@dataclass
class ConclusionBlock:
    """Final recommendation or synthesis."""

    heading: str  # e.g., "Transaction Proposal"
    recommendation: str  # Clear actionable recommendation
    rationale: str  # Explanation for the recommendation
    supporting_data: Optional[DataTable] = None


@dataclass
class AgentResponseFormat:
    """Structured format for agent responses."""

    sections: List[ContentSection]
    key_insights: List[str]  # Bullet-pointed insights
    summary: List[str]  # Numbered summary points
    conclusion: ConclusionBlock
    data_tables: List[DataTable] = field(default_factory=list)