export class StringBuider
{
  strings: string[]

  constructor()
  {
    this.strings = []
  }

  /** 插入 */
  Append(obj: any)
  {
    this.strings.push(obj)
  }

  /** 插入文本 */
  AppendString(str: string) { this.strings.push(str) }

  /** 格式化 插入 */
  AppendFormat(str: string, ...arg: any[]): string
  {
    for (let i = 0; i < arg.length; i++)
    {
      let parent = `\\{${i}\\}`
      let reg = new RegExp(parent, 'g')
      str = str.replace(reg, arg[i])
    }
    this.strings.push(str)
    return str
  }

  /** 添加一行(回车) */
  AppendLine(str = '')
  {
    if (str != null)
    {
      this.AppendString(str)
    }
  }

  /** 插入 */
  Insert(index: number, ...strs)
  {
    if (strs.length == 0)
      return
    if (index > this.strings.length)
      index = this.strings.length
    if (index < 0)
      index = 0
    this.strings.splice(index, 0, ...strs)
  }

  /** 删除片段 */
  Remove(startIndex: number, length: number): string[]
  {
    return this.strings.splice(startIndex, length)
  }

  /** 所有文本 */
  ToString(): string
  {
    return this.strings.join('\r\n')
  }

  /** 清空 */
  Clear() { this.strings = [] }

  /** 容量 */
  get size() { return this.strings.length }
  /** 文本数 */
  get Count() { return this.strings.length }

  GetStringLength(): number
  {
    let length = 0
    for (const str of this.strings)
    {
      length += str.length
    }
    return length
  }
}