Allow using a custom manfest and getting multiple packs at once

A custom manifest can be provided as a command-line options --manifest/-m

lib/mix/tasks/pleroma/emoji.ex

@@ -9,15 +9,31 @@ defmodule Mix.Tasks.Pleroma.Emoji do
   @moduledoc """
   """
 
-  defp fetch_manifest do
+  @default_manifest "https://git.pleroma.social/vaartis/emoji-index/raw/master/index.json"
-    Tesla.get!("https://git.pleroma.social/vaartis/emoji-index/raw/master/index.json").body
+
-    |> Poison.decode!()
+  defp fetch_manifest(from) do
+    Tesla.get!(from).body |> Poison.decode!()
   end
 
-  def run(["ls-packs"]) do
+  defp parse_global_opts(args) do
+    OptionParser.parse(
+      args,
+      strict: [
+        manifest: :string
+      ],
+      aliases: [
+        m: :manifest
+      ]
+    )
+  end
+
+  def run(["ls-packs" | args]) do
     Application.ensure_all_started(:hackney)
 
-    manifest = fetch_manifest()
+    {options, [], []} = parse_global_opts(args)
+
+    manifest =
+      fetch_manifest(if options[:manifest], do: options[:manifest], else: @default_manifest)
 
     Enum.each(manifest, fn {name, info} ->
       to_print = [
@@ -34,18 +50,22 @@ def run(["ls-packs"]) do
     end)
   end
 
-  def run(["get-pack", pack_name]) do
+  def run(["get-packs" | args]) do
     Application.ensure_all_started(:hackney)
 
-    manifest = fetch_manifest()
+    {options, pack_names, []} = parse_global_opts(args)
 
+    manifest =
+      fetch_manifest(if options[:manifest], do: options[:manifest], else: @default_manifest)
+
+    for pack_name <- pack_names do
       if Map.has_key?(manifest, pack_name) do
         pack = manifest[pack_name]
         src_url = pack["src"]
 
         IO.puts(
           IO.ANSI.format([
-          "Downloading pack ",
+            "Downloading ",
             :bright,
             pack_name,
             :normal,
@@ -57,7 +77,7 @@ def run(["get-pack", pack_name]) do
 
         binary_archive = Tesla.get!(src_url).body
 
-      IO.puts("Unpacking #{pack_name} pack")
+        IO.puts(IO.ANSI.format(["Unpacking ", :bright, pack_name]))
 
         static_path = Path.join(:code.priv_dir(:pleroma), "static")
 
@@ -81,12 +101,14 @@ def run(["get-pack", pack_name]) do
             file_list: files_to_unzip
           )
 
-      IO.puts("Wriring emoji.txt for the #{pack_name} pack")
+        IO.puts(IO.ANSI.format(["Writing emoji.txt for ", :bright, pack_name]))
 
         emoji_txt_str =
           Enum.map(
             pack["files"],
-          fn {shortcode, path} -> "#{shortcode}, /instance/static/emoji/#{pack_name}/#{path}" end
+            fn {shortcode, path} ->
+              "#{shortcode}, /instance/static/emoji/#{pack_name}/#{path}"
+            end
           )
           |> Enum.join("\n")
 
@@ -95,4 +117,5 @@ def run(["get-pack", pack_name]) do
         IO.puts(IO.ANSI.format([:bright, :red, "No pack named \"#{pack_name}\" found"]))
       end
     end
+  end
 end