/* eslint-disable */
/** 客户信用与集中度风险：客户档案表。 */

exports.up = (pgm) => {
  pgm.sql(`
    CREATE TABLE IF NOT EXISTS customers (
      id TEXT PRIMARY KEY,
      name TEXT NOT NULL UNIQUE,
      credit_rating TEXT NOT NULL DEFAULT '未评级',
      avg_overdue_days DOUBLE PRECISION NOT NULL DEFAULT 0,
      total_contract_amount DOUBLE PRECISION NOT NULL DEFAULT 0,
      assessment_count INT NOT NULL DEFAULT 0,
      notes TEXT,
      created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
      updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
    );
    CREATE INDEX IF NOT EXISTS idx_customers_name ON customers(name);
  `);
};

exports.down = (pgm) => {
  pgm.sql(`DROP TABLE IF EXISTS customers;`);
};