fix: Source asdf init script

defaults/main.yaml

@@ -1 +1,2 @@
-asdf_plugin_git_url: ""
+asdf_plugin_source: ~/.asdf/asdf.sh
+asdf_plugin_shell_executable: /bin/bash

meta/argument_specs.yaml

@@ -9,7 +9,6 @@ argument_specs:
           Name of the asdf plugin to install. For example `terraform`.
 
       asdf_plugin_git_url:
-        default: ""
         type: str
         required: false
         description: >-
@@ -42,8 +41,16 @@ argument_specs:
 
       asdf_plugin_shell_executable:
         type: str
-        required: false
+        required: true
+        default: /bin/bash
         description: >-
           Absolute path to a shell executable that the Ansible Shell module
           tasks should use for working with asdf. If this option is unset, this
           the module defaults will be used.
+
+      asdf_plugin_source:
+        type: str
+        required: true
+        default: ~/.asdf/asdf.sh
+        description: >-
+          Asdf source script.

tasks/main.yml

@@ -1,75 +1,36 @@
-# ------------------------------------------------------------------------------
-# Add plugin
-
-
 - name: "{{ asdf_plugin_name }} : Add plugin"
   when: asdf_plugin_shell_executable is undefined
-  ansible.builtin.command: >-
-    asdf plugin add {{ asdf_plugin_name }} {{ asdf_plugin_git_url }}
-  changed_when: false
-
-- name: "{{ asdf_plugin_name }} : Add plugin"
-  when: asdf_plugin_shell_executable is defined
   ansible.builtin.shell: >-
+    source {{ asdf_plugin_source }}
     asdf plugin add {{ asdf_plugin_name }} {{ asdf_plugin_git_url }}
   args: {executable: "{{ asdf_plugin_shell_executable }}"}
+  register: task
+  failed_when: task.rc >= 1 and 'already added' not in task.stderr
   changed_when: false
 
-
-# ------------------------------------------------------------------------------
-# Checkout plugin repo at ref
-
-
 - name: "{{ asdf_plugin_name }} : Checkout plugin repo at ref"
   when: asdf_plugin_shell_executable is undefined and asdf_plugin_git_ref is defined
-  ansible.builtin.command: >-
-    asdf plugin update {{ asdf_plugin_name }} {{ asdf_plugin_git_ref }}
-  changed_when: false
-
-- name: "{{ asdf_plugin_name }} : Checkout plugin repo at ref"
-  when: asdf_plugin_shell_executable is defined and asdf_plugin_git_ref is defined
   ansible.builtin.shell: >-
+    source {{ asdf_plugin_source }}
     asdf plugin update {{ asdf_plugin_name }} {{ asdf_plugin_git_ref }}
   args: {executable: "{{ asdf_plugin_shell_executable }}"}
-  changed_when: false
-
-
-# ------------------------------------------------------------------------------
-# Install package
-
-
-- name: "{{ asdf_plugin_name }} : Install package {{ asdf_plugin_package_versions | default('SKIP') }}"
-  when: asdf_plugin_shell_executable is undefined and asdf_plugin_package_versions is defined
-  ansible.builtin.command: >-
-    asdf install {{ asdf_plugin_name }} {{ item }}
-  loop: "{{ asdf_plugin_package_versions }}"
+  register: task
+  failed_when: task.rc > 0 or 'fatal' in task.stdout or 'error' in task.stdout
   changed_when: false
 
 - name: "{{ asdf_plugin_name }} : Install package {{ asdf_plugin_package_versions | default('SKIP') }}"
   when: asdf_plugin_shell_executable is defined and asdf_plugin_package_versions is defined
   ansible.builtin.shell: >-
+    source {{ asdf_plugin_source }}
     asdf install {{ asdf_plugin_name }} {{ item }}
   loop: "{{ asdf_plugin_package_versions }}"
   args: {executable: "{{ asdf_plugin_shell_executable }}"}
   changed_when: false
 
-
-# ------------------------------------------------------------------------------
-# Set the global version
-
-
-- name: "{{ asdf_plugin_name }} : Set global version to {{ asdf_plugin_package_version_global | default('SKIP') }}"
-  when: asdf_plugin_shell_executable is undefined and asdf_plugin_package_version_global is defined
-  ansible.builtin.command: >-
-    asdf global {{ asdf_plugin_name }} {{ asdf_plugin_package_version_global }}
-  changed_when: false
-
 - name: "{{ asdf_plugin_name }} : Set global version to {{ asdf_plugin_package_version_global | default('SKIP') }}"
   when: asdf_plugin_shell_executable is defined and asdf_plugin_package_version_global is defined
   ansible.builtin.shell: >-
+    source {{ asdf_plugin_source }}
     asdf global {{ asdf_plugin_name }} {{ asdf_plugin_package_version_global }}
   args: {executable: "{{ asdf_plugin_shell_executable }}"}
   changed_when: false
-
-
-# ------------------------------------------------------------------------------