ElectronicBabylonianLiterature/ebl-frontend

import _ from 'lodash'

function parseSide(side: string) {
  const match = /(\d+)([^\d]*)/.exec(side) || ['0', '']
  return {
    rows: Number(match[1]),
    suffix: match[2],
  }
}
function createTemplate({
  rows,
  suffix = '',
}: {
  rows: number
  suffix: string
}) {
  return _.range(1, rows + 1)
    .map((row) => `${row}${suffix}. [...]  [...]`)
    .join('\n')
}

class Template {
  readonly pattern: string

  constructor(pattern: string) {
    this.pattern = pattern
  }

  get isEmpty(): boolean {
    return this.pattern === ''
  }

  get isValid(): boolean {
    return /^\d+[^,]*(?:,\s*\d+[^,]*)?$/.test(this.pattern)
  }

  generate(): string {
    const [obverse, reverse] = this.pattern
      .split(/,\s*/)
      .map(parseSide)
      .map(createTemplate)

    return reverse ? `@obverse\n${obverse}\n\n@reverse\n${reverse}` : obverse
  }
}

export default Template