Add password reset task.

README.md

@@ -59,3 +59,9 @@ Add the following to your `dev.secret.exs` or `prod.secret.exs` if you want to p
       proxy_url: "127.0.0.1:8123"
 
 This is useful for running pleroma inside Tor or i2p.
+
+## Admin Tasks
+
+### Password reset
+
+Run `mix generate_password_reset username` to generate a password reset link that you can then send to the user.

lib/mix/tasks/generate_password_reset.ex

+defmodule Mix.Tasks.GeneratePasswordReset do
+  use Mix.Task
+  import Mix.Ecto
+  alias Pleroma.{Repo, User}
+
+  @shortdoc "Generate password reset link for user"
+  def run([nickname]) do
+    Mix.Task.run("app.start")
+
+    with %User{local: true} = user <- User.get_by_nickname(nickname),
+         {:ok, token} <- Pleroma.PasswordResetToken.create_token(user) do
+      IO.puts "Generated password reset token for #{user.nickname}"
+      IO.puts "Url: #{Pleroma.Web.Router.Helpers.util_url(Pleroma.Web.Endpoint, :show_password_reset, token.token)}"
+    else
+      _ ->
+        IO.puts "No local user #{nickname}"
+    end
+  end
+end