-- ============================================================================
-- INVESTMENT SCHEMA - Tabla: daily_performance
-- ============================================================================
-- Snapshots diarios de rendimiento de cuentas PAMM
-- Usado para graficos, reportes y calculo de metricas
-- ============================================================================

CREATE TABLE IF NOT EXISTS investment.daily_performance (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),

    -- Relaciones
    account_id UUID NOT NULL REFERENCES investment.accounts(id) ON DELETE CASCADE,
    product_id UUID NOT NULL REFERENCES investment.products(id) ON DELETE CASCADE,

    -- Fecha del snapshot
    snapshot_date DATE NOT NULL,

    -- Balance
    opening_balance DECIMAL(20, 8) NOT NULL,
    closing_balance DECIMAL(20, 8) NOT NULL,

    -- Rendimiento del dia
    daily_pnl DECIMAL(20, 8) NOT NULL DEFAULT 0,
    daily_return_percentage DECIMAL(10, 6) NOT NULL DEFAULT 0,

    -- Rendimiento acumulado
    cumulative_pnl DECIMAL(20, 8) NOT NULL DEFAULT 0,
    cumulative_return_percentage DECIMAL(10, 6) NOT NULL DEFAULT 0,

    -- Movimientos del dia
    deposits DECIMAL(20, 8) NOT NULL DEFAULT 0,
    withdrawals DECIMAL(20, 8) NOT NULL DEFAULT 0,
    distributions_received DECIMAL(20, 8) NOT NULL DEFAULT 0,

    -- Metricas del agente de trading
    trades_executed INTEGER NOT NULL DEFAULT 0,
    winning_trades INTEGER NOT NULL DEFAULT 0,
    losing_trades INTEGER NOT NULL DEFAULT 0,
    win_rate DECIMAL(5, 2),

    -- Volatilidad y riesgo
    max_drawdown DECIMAL(10, 6),
    sharpe_ratio DECIMAL(10, 6),
    volatility DECIMAL(10, 6),

    -- High/Low del dia
    high_water_mark DECIMAL(20, 8),
    lowest_point DECIMAL(20, 8),

    -- Metadata del snapshot
    snapshot_source VARCHAR(50) DEFAULT 'cron', -- 'cron', 'manual', 'system'
    metadata JSONB DEFAULT '{}',

    -- Timestamps
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),

    -- Constraints
    CONSTRAINT uq_daily_performance_account_date UNIQUE(account_id, snapshot_date),
    CONSTRAINT chk_valid_balances CHECK (opening_balance >= 0 AND closing_balance >= 0),
    CONSTRAINT chk_valid_movements CHECK (deposits >= 0 AND withdrawals >= 0),
    CONSTRAINT chk_valid_trades CHECK (
        trades_executed >= 0 AND
        winning_trades >= 0 AND
        losing_trades >= 0 AND
        winning_trades + losing_trades <= trades_executed
    ),
    CONSTRAINT chk_valid_win_rate CHECK (win_rate IS NULL OR (win_rate >= 0 AND win_rate <= 100))
);

-- Indices
CREATE INDEX idx_daily_performance_account ON investment.daily_performance(account_id);
CREATE INDEX idx_daily_performance_product ON investment.daily_performance(product_id);
CREATE INDEX idx_daily_performance_date ON investment.daily_performance(snapshot_date DESC);
CREATE INDEX idx_daily_performance_account_date ON investment.daily_performance(account_id, snapshot_date DESC);

-- Index for recent performance (removed time-based predicate for immutability)
CREATE INDEX idx_daily_performance_recent ON investment.daily_performance(account_id, snapshot_date DESC);

-- Comentarios
COMMENT ON TABLE investment.daily_performance IS 'Snapshots diarios de rendimiento de cuentas PAMM';
COMMENT ON COLUMN investment.daily_performance.snapshot_date IS 'Fecha del snapshot (una entrada por dia por cuenta)';
COMMENT ON COLUMN investment.daily_performance.daily_return_percentage IS 'Retorno del dia como porcentaje';
COMMENT ON COLUMN investment.daily_performance.cumulative_return_percentage IS 'Retorno acumulado desde apertura de cuenta';
COMMENT ON COLUMN investment.daily_performance.max_drawdown IS 'Maximo drawdown del dia';
COMMENT ON COLUMN investment.daily_performance.high_water_mark IS 'Punto mas alto alcanzado';

-- Vista para resumen mensual
CREATE OR REPLACE VIEW investment.v_monthly_performance AS
SELECT
    account_id,
    product_id,
    DATE_TRUNC('month', snapshot_date) AS month,
    MIN(opening_balance) AS month_opening,
    MAX(closing_balance) AS month_closing,
    SUM(daily_pnl) AS total_pnl,
    AVG(daily_return_percentage) AS avg_daily_return,
    SUM(deposits) AS total_deposits,
    SUM(withdrawals) AS total_withdrawals,
    SUM(distributions_received) AS total_distributions,
    SUM(trades_executed) AS total_trades,
    SUM(winning_trades) AS total_winning,
    SUM(losing_trades) AS total_losing,
    CASE
        WHEN SUM(winning_trades) + SUM(losing_trades) > 0
        THEN ROUND(SUM(winning_trades)::DECIMAL / (SUM(winning_trades) + SUM(losing_trades)) * 100, 2)
        ELSE NULL
    END AS monthly_win_rate,
    MIN(lowest_point) AS monthly_low,
    MAX(high_water_mark) AS monthly_high,
    COUNT(*) AS trading_days
FROM investment.daily_performance
GROUP BY account_id, product_id, DATE_TRUNC('month', snapshot_date);

COMMENT ON VIEW investment.v_monthly_performance IS 'Resumen mensual de rendimiento agregado';