senecajs/seneca-entity-history

/* Copyright (c) 2020 voxgig and other contributors, MIT License */
/* $lab:coverage:off$ */
'use strict'

/* $lab:coverage:on$ */


// load specific version
export async function entity_load_msg(msg: {
  ent: {
    // version id; if null, load current
    id?: string
    ver_id?: string

    ent_id?: string
    base: string
    name: string
  }
}) {
  let seneca = this

  // shortcut for repl use

  /*
    ent = msg.ent
    out.entver = delete$ d load$ sys/entver {
      ent_id: ent.ent_id ?? ent.id,
      id: ent.ver_id ?? ent.ent_id ?? ent.id,
      base: ent.base,
      name: ent.name,
    }
    out.item = entity$ canon$ ent out.entver.d
    out.ok = out.item?
*/


  let work = {
    entverq: {
      ent_id: msg.ent.ent_id || msg.ent.id,

      // load current if version not specified
      // NOTE: the finder uses the original ent id
      id: msg.ent.ver_id || msg.ent.ent_id || msg.ent.id,

      base: msg.ent.base,
      name: msg.ent.name,
    },
    ent_ver: {
      d: null,
    },
    out$: {
      ok: false,
      item: null,
      entver: null
    },
  }

  work.ent_ver = await seneca.entity('sys/entver').load$(work.entverq)

  if (work.ent_ver) {
    work.out$.item = seneca
      .entity(work.entverq.base + '/' + work.entverq.name)
      .data$(work.ent_ver.d)

    work.out$.entver = (work.ent_ver as any)
    delete (work.out$.entver as any).d
  }

  work.out$.ok = null != work.out$.item

  return work.out$
}