import { shim } from './shim.js'

export async function requestRollFromTokens (tokens, rollType, rollDesc, options = {}) {
  // tokens: list of tokens to request a roll from
  // rollType: 'attribute' or 'skill
  // rollDesc: name of attribute or skill
  // options:
  //   title: title for the roll dialog. Will have "- {{ token name }}"
  //      appended
  //   mods: list of modifiers {label: "", value: 0, ignore: false}
  //   modCallback: callback function that takes a token and returns a list of
  //     modifiers in the same format as modifiers, above
  options.requestingUserId = shim.user.id
  const promises = []
  for (const token in tokens) {
    const owner = shim.warpgateUtil.firstOwner(token.document)
    promises.append(shim.socket.executeAsUser(requestTokenRoll, owner.id,
      token.scene.id, token.id, rollType, rollDesc, options))
  }
  results = await Promise.allSettled(promises)
  return results
}

export async function requestTokenRoll (
  sceneId, tokenId, rollType, rollDesc, options
) {
  const requestingUser = shim.users.get(options.requestingUserId)
  const scene = shim.scenes.get(sceneId)
  const token = scene.tokens.get(tokenId)
  const additionalMods = []
  if ('mods' in options) {
    for (const mod of options.mods) {
      additionalMods.push(mod)
    }
  }
  if ('modCallback' in options) {
    const tokenMods = await options.modCallback(token)
    for (const tm of tokenMods) {
      additionalMods.push(tm)
    }
  }
  let rollFunc = token.actor.rollAttribute
  let rollId = rollDesc.toLowerCase()
  if (rollType === 'skill') {
    rollFunc = token.actor.rollSkill
    rollId = token.actor.items.find(i => (
      (i.system.swid === rollDesc.toLowerCase() ||
        i.name.toLowerCase() === rollDesc.toLowerCase()) && i.type === 'skill'))
  }
  const rollOpts = {
    title: options?.title || `${requestingUser.name} requests a ${rollDesc} roll`
  }
  if (additionalMods.length > 0) {
    rollOpts.additionalMods = additionalMods
  }
  const result = await rollFunc(rollId, rollOpts)
  return { sceneId, tokenId, result }
}