-- Migration 009: Tabela de histórico de preços de itens
-- Criado em: 2025-01-27

-- Tabela de histórico de preços
CREATE TABLE IF NOT EXISTS item_price_history (
    price_history_id SERIAL PRIMARY KEY,
    item_id INTEGER NOT NULL,
    item_name VARCHAR(255) NOT NULL,
    server_name VARCHAR(50),
    price_amount DECIMAL(10, 2) NOT NULL,
    price_type VARCHAR(20) CHECK (price_type IN ('pix', 'tibia_coins', 'gold_coins')),
    transaction_id INTEGER REFERENCES transactions(transaction_id),
    recorded_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Índices para performance
CREATE INDEX IF NOT EXISTS idx_price_history_item ON item_price_history(item_id, recorded_at DESC);
CREATE INDEX IF NOT EXISTS idx_price_history_server ON item_price_history(server_name);
CREATE INDEX IF NOT EXISTS idx_price_history_transaction ON item_price_history(transaction_id);
CREATE INDEX IF NOT EXISTS idx_price_history_recorded_at ON item_price_history(recorded_at DESC);