session-desktop/ts/models/groupUpdate.ts

import { ConvoHub } from '../session/conversations';
import { UserUtils } from '../session/utils';
import type { LocalizerComponentPropsObject } from '../types/localizer';

// to remove after merge with groups
function usAndXOthers(arr: Array<string>) {
  const us = UserUtils.getOurPubKeyStrFromCache();

  if (arr.includes(us)) {
    return { us: true, others: arr.filter(m => m !== us) };
  }
  return { us: false, others: arr };
}

export function getKickedGroupUpdateStr(
  kicked: Array<string>,
  groupName: string
): LocalizerComponentPropsObject {
  const { others, us } = usAndXOthers(kicked);
  const othersNames = others.map(
    ConvoHub.use().getContactProfileNameOrShortenedPubKey
  );

  if (us) {
    switch (others.length) {
      case 0:
        return { token: 'groupRemovedYou', args: { group_name: groupName } };
      case 1:
        return { token: 'groupRemovedYouTwo', args: { other_name: othersNames[0] } };
      default:
        return { token: 'groupRemovedYouMultiple', args: { count: othersNames.length } };
    }
  }

  switch (othersNames.length) {
    case 0:
      throw new Error('kicked without anyone in it.');
    case 1:
      return { token: 'groupRemoved', args: { name: othersNames[0] } };
    case 2:
      return {
        token: 'groupRemovedTwo',
        args: {
          name: othersNames[0],
          other_name: othersNames[1],
        },
      };
    default:
      return {
        token: 'groupRemovedMultiple',
        args: {
          name: othersNames[0],
          count: othersNames.length - 1,
        },
      };
  }
}

export function getGroupNameChangeStr(newName: string): LocalizerComponentPropsObject {
  return newName
    ? { token: 'groupNameNew',  args: { group_name: newName }}
    : { token: 'groupNameUpdated' };
}

export function getLeftGroupUpdateChangeStr(
  left: Array<string>,
):LocalizerComponentPropsObject {
  const { others, us } = usAndXOthers(left);

  if (left.length !== 1) {
    throw new Error('left.length should never be more than 1');
  }

  return us
    ? { token: 'groupMemberYouLeft' }
    : {
        token: 'groupMemberLeft',
        args: {
          name: ConvoHub.use().getContactProfileNameOrShortenedPubKey(others[0]),
        },
      } ;
}

export function getJoinedGroupUpdateChangeStr(
  joined: Array<string>,
  groupv2: boolean,
  addedWithHistory: boolean,
  _groupName: string
): LocalizerComponentPropsObject {
  const { others, us } = usAndXOthers(joined);
  const othersNames = others.map(
    ConvoHub.use().getContactProfileNameOrShortenedPubKey
  );

  if (groupv2) {
    if (us) {
      switch (othersNames.length) {
        case 0:
          return  { token: addedWithHistory ? 'groupMemberNewYou' : 'groupInviteYou' } ;
        case 1:
          return addedWithHistory ? { token:  'groupMemberNewYouHistoryTwo', args: { name: othersNames[0] } } : {token: 'legacyGroupMemberNewYouOther', args: {other_name: othersNames[0]}};
        default:
          return addedWithHistory ? { token:  'groupMemberNewYouHistoryMultiple', args: { count: othersNames.length } } : {token: 'groupInviteYouAndMoreNew', args: {count: othersNames.length}};
      }
    }
    switch (othersNames.length) {
      case 0:
        return  { token: addedWithHistory ? 'groupInviteYouHistory' : 'groupInviteYou' } ;
      case 1:
        return addedWithHistory ? { token:  'groupMemberNewYouHistoryTwo', args: { name: othersNames[0] } } : {token: 'legacyGroupMemberNewYouOther', args: {other_name: othersNames[0]}};
      default:
        return addedWithHistory ? { token:  'groupMemberNewHistoryMultiple', args: { name: othersNames[0], count: othersNames.length -1 } } : {token: 'groupMemberNewMultiple', args: { name: othersNames[0], count: othersNames.length -1 }};
    }

  }


  if (us) {
    switch (othersNames.length) {
      case 0:
        return { token: 'legacyGroupMemberYouNew' };
      case 1:
        return { token: 'legacyGroupMemberNewYouOther', args: { other_name: othersNames[0] } };
      default:
        return { token: 'legacyGroupMemberNewYouMultiple', args: { count: othersNames.length } };
    }
  }
  switch (othersNames.length) {
    case 0:
      throw new Error('joined without anyone in it.');
    case 1:
      return { token: 'legacyGroupMemberNew', args: { name: othersNames[0] } };
    case 2:
      return {
        token: 'legacyGroupMemberTwoNew',
        args: {
          name: othersNames[0],
          other_name: othersNames[1],
        },
      };
    default:
      return {
        token: 'legacyGroupMemberNewMultiple',
        args: {
          name: othersNames[0],
          count: othersNames.length - 1,
        },
      };
  }
}


export function getPromotedGroupUpdateChangeStr(
  joined: Array<string>,
): LocalizerComponentPropsObject {
  const { others, us } = usAndXOthers(joined);
  const othersNames = others.map(
    ConvoHub.use().getContactProfileNameOrShortenedPubKey
  );

  if (us) {
    switch (othersNames.length) {
      case 0:
        return { token: 'groupPromotedYou' };
      case 1:
        return { token: 'groupPromotedYouTwo', args: { name: othersNames[0] } };
      default:
        return { token: 'groupPromotedYouMultiple', args: { count: othersNames.length } };
    }
  }
  switch (othersNames.length) {
    case 0:
      throw new Error('joined without anyone in it.');
    case 1:
      return { token: 'adminPromotedToAdmin', args: { name: othersNames[0] } };
    case 2:
      return {
        token: 'adminTwoPromotedToAdmin',
        args: {
          name: othersNames[0],
          other_name: othersNames[1],
        },
      };
    default:
      return {
        token: 'adminMorePromotedToAdmin',
        args: {
          name: othersNames[0],
          count: othersNames.length - 1,
        },
      };
  }
}