# `WardrikSlack.Approvers`

Finds approvers' Slack member IDs, to message each directly.

| Approver      | Looked up with          | Scope              |
| ------------- | ----------------------- | ------------------ |
| `U024BE7LH`   | used as is              |                    |
| `maria@...`   | `users.lookupByEmail`   | `users:read.email` |
| `@maria`      | `users.list`            | `users:read`       |

Deleted members are skipped. Approvers are looked up each time a call waits. Nothing is cached.

# `id?`

```elixir
@spec id?(String.t()) :: boolean()
```

Returns whether `approver` is a Slack member ID, such as `U024BE7LH`.

# `members`

```elixir
@spec members(WardrikChannel.Workspace.t(), [String.t()]) :: [
  {String.t(), {:ok, String.t()} | :error}
]
```

Returns each approver with its member ID, or `:error` if Slack has none.

    WardrikSlack.Approvers.members(workspace, ["@maria", "nobody@example.com"])
    #=> [{"@maria", {:ok, "U024BE7LH"}}, {"nobody@example.com", :error}]

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*Consult [api-reference.md](api-reference.md) for complete listing*