export type PresentationProfileData = {
  authorName?: string
  presentation?: string
  contentDescription?: string
  mainnetAddress?: string
  pictureUrl?: string
  category?: string
}

export function parsePresentationProfileJson(json: string): PresentationProfileData | null {
  try {
    const parsed: unknown = JSON.parse(json)
    if (typeof parsed !== 'object' || parsed === null) {
      return null
    }
    const obj = parsed as Record<string, unknown>
    return {
      ...readOptionalStringFields(obj, ['authorName', 'presentation', 'contentDescription', 'mainnetAddress', 'pictureUrl', 'category']),
    }
  } catch (error) {
    console.error('Error parsing presentation profile JSON:', error)
    return null
  }
}

function readOptionalStringFields<TKeys extends readonly string[]>(
  obj: Record<string, unknown>,
  keys: TKeys
): Partial<Record<TKeys[number], string>> {
  const result: Partial<Record<TKeys[number], string>> = {}
  for (const key of keys as ReadonlyArray<TKeys[number]>) {
    const value = obj[key]
    if (typeof value === 'string') {
      result[key] = value
    }
  }
  return result
}