import pool from '../../db.js';

const CREATE_TABLE_SQL = `
CREATE TABLE IF NOT EXISTS bi_ele_charge_record (
  id BIGINT AUTO_INCREMENT PRIMARY KEY,
  order_no VARCHAR(64) NOT NULL,
  station_no VARCHAR(64) NULL,
  station_name VARCHAR(128) NULL,
  terminal_name VARCHAR(64) NULL,
  region VARCHAR(64) NULL,
  city VARCHAR(64) NULL,
  district VARCHAR(64) NULL,
  operating_company VARCHAR(128) NULL,
  station_type VARCHAR(32) NULL,
  order_status VARCHAR(32) NULL,
  charge_form VARCHAR(32) NULL,
  start_time DATETIME NULL,
  end_time DATETIME NULL,
  duration_min INT NULL,
  kwh DECIMAL(10,3) NULL,
  e_fee DECIMAL(10,2) NULL,
  service_fee DECIMAL(10,2) NULL,
  fee DECIMAL(10,2) NULL,
  plate VARCHAR(32) NULL,
  judged_plate VARCHAR(32) NULL,
  vin VARCHAR(64) NULL,
  customer_name VARCHAR(128) NULL,
  customer_phone VARCHAR(32) NULL,
  enterprise_name VARCHAR(128) NULL,
  matched_truck_id VARCHAR(32) NULL,
  matched_plate VARCHAR(32) NULL,
  vehicle_kind ENUM('internal','external','unknown') NOT NULL DEFAULT 'unknown',
  raw_json JSON NULL,
  batch_id VARCHAR(64) NOT NULL,
  imported_at DATETIME NOT NULL,
  UNIQUE KEY uk_order_no (order_no),
  KEY idx_start_time (start_time),
  KEY idx_batch (batch_id),
  KEY idx_kind (vehicle_kind),
  KEY idx_plate (plate)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
`;

let ensured = false;
export async function ensureChargeRecordTable(): Promise<void> {
  if (ensured) return;
  await pool.query(CREATE_TABLE_SQL);
  ensured = true;
}