import logger from "./logger";

export default class MemoryUtils {
  maxMemoryOfByte: number = 0
  maxMemoryChanged: boolean = true

  logWithMemoryOnMemoryChange (logInfo: string) {
    const memoryUsage = process.memoryUsage()
    if (this.maxMemoryOfByte < memoryUsage.rss) {
      this.maxMemoryOfByte = memoryUsage.rss
      this.maxMemoryChanged = true
    }

    if (this.maxMemoryChanged) {
      logger.debug(`${logInfo}  ${this.format(memoryUsage.rss)}/${this.format(this.maxMemoryOfByte)}`)

      this.maxMemoryChanged = false
    }
  }

  format (bytes: any) {
    return (bytes / 1024 / 1024).toFixed(2) + ' MB';
  }
}