Edits history of script submission #22729 for ' Get Record (servicenow)'

• bunnative

  Ap­pro­ved version

  Edit in Windmill

  Embed

  //native
  
  export type DynSelect_table = string
  export type DynMultiselect_fields = string[]
  
  function authHeader(auth: RT.Servicenow) {
    return auth.token
      ? `Bearer ${auth.token}`
      : `Basic ${btoa(`${auth.username}:${auth.password}`)}`
  }
  
  // Dropdown of the instance's tables (sys_db_object).
  export async function table(auth: RT.Servicenow) {
    const response = await fetch(
      `${auth.instance_url}/api/now/table/sys_db_object?sysparm_fields=name,label&sysparm_limit=10000`,
      {
        headers: {
          Authorization: authHeader(auth),
          Accept: "application/json",
        },
      }
    )
    if (!response.ok) {
      throw new Error(`${response.status} ${await response.text()}`)
    }
    const { result } = (await response.json()) as {
      result: { name: string; label: string }[]
    }
    return result
      .filter((t) => t.name)
      .map((t) => ({ value: t.name, label: `${t.label} (${t.name})` }))
      .sort((a, b) => a.label.localeCompare(b.label))
  }
  
  // Walk the table's inheritance chain (sys_db_object.super_class) so the column
  // list includes fields inherited from parent tables, not just fields defined on
  // the chosen table (sys_dictionary stores each field under its defining table —
  // e.g. incident extends task, so short_description/priority live on task).
  // Best-effort: any failure falls back to just the table itself.
  async function tableChain(auth: RT.Servicenow, table: string) {
    const chain: string[] = []
    let current: string | undefined = table
    while (current && !chain.includes(current)) {
      chain.push(current)
      const response = await fetch(
        `${auth.instance_url}/api/now/table/sys_db_object?sysparm_query=name=${current}&sysparm_fields=super_class.name&sysparm_limit=1`,
        {
          headers: {
            Authorization: authHeader(auth),
            Accept: "application/json",
          },
        }
      )
      if (!response.ok) break
      const { result } = (await response.json()) as {
        result: { "super_class.name"?: string }[]
      }
      current = result[0]?.["super_class.name"] || undefined
    }
    return chain
  }
  
  // Dependent multi-select: the chosen table's columns (sys_dictionary), including
  // columns inherited from parent tables.
  export async function fields(auth: RT.Servicenow, table: DynSelect_table) {
    if (!table) return []
    const chain = await tableChain(auth, table)
    const url = new URL(`${auth.instance_url}/api/now/table/sys_dictionary`)
    url.searchParams.append(
      "sysparm_query",
      `nameIN${chain.join(",")}^elementISNOTEMPTY`
    )
    url.searchParams.append("sysparm_fields", "element,column_label")
    url.searchParams.append("sysparm_limit", "10000")
  
    const response = await fetch(url, {
      headers: {
        Authorization: authHeader(auth),
        Accept: "application/json",
      },
    })
    if (!response.ok) {
      throw new Error(`${response.status} ${await response.text()}`)
    }
    const { result } = (await response.json()) as {
      result: { element: string; column_label: string }[]
    }
    return result
      .filter((f) => f.element)
      .map((f) => ({
        value: f.element,
        label: `${f.column_label} (${f.element})`,
      }))
      .sort((a, b) => a.label.localeCompare(b.label))
  }
  
  /**
   * Get Record
   * Retrieve a single record by sys_id. Optionally restrict the returned columns, and choose raw vs. display values.
   */
  export async function main(
    auth: RT.Servicenow,
    table: DynSelect_table,
    sys_id: string,
    fields: DynMultiselect_fields | undefined,
    display_value: "false" | "true" | "all" | undefined
  ) {
    const url = new URL(`${auth.instance_url}/api/now/table/${table}/${sys_id}`)
    if (fields && fields.length > 0) {
      url.searchParams.append("sysparm_fields", fields.join(","))
    }
    if (display_value !== undefined && display_value !== "") {
      url.searchParams.append("sysparm_display_value", display_value)
    }
  
    const response = await fetch(url, {
      method: "GET",
      headers: {
        Authorization: authHeader(auth),
        Accept: "application/json",
      },
    })
  
    if (!response.ok) {
      throw new Error(`${response.status} ${await response.text()}`)
    }
  
    return await response.json()
  }
  

  Submitted by hugo989 5 days ago