Simplify the Seriatim role

tasks/main.yml

@@ -1,12 +1,109 @@
 ---
-- name: Validate Seriatim role inputs
-  ansible.builtin.import_tasks: validate.yml
+- name: Validate the supported platform
+  ansible.builtin.assert:
+    that:
+      - ansible_facts.distribution == "Ubuntu"
+      - ansible_facts.distribution_version == "26.04"
+      - ansible_facts.architecture in ["x86_64", "aarch64"]
+    fail_msg: Seriatim supports Ubuntu 26.04 on x86_64 or aarch64.
 
-- name: Manage Seriatim build dependencies
-  ansible.builtin.import_tasks: dependencies.yml
+- name: Install Git
+  ansible.builtin.apt:
+    name: git
+    state: present
+    update_cache: true
+  when: seriatim_manage_build_dependencies
 
-- name: Manage Seriatim source checkout
-  ansible.builtin.import_tasks: source.yml
+- name: Install Go
+  community.general.snap:
+    name: go
+    channel: "{{ seriatim_go_snap_channel }}"
+    classic: true
+    state: present
+  when: seriatim_manage_build_dependencies
 
-- name: Build and install Seriatim
-  ansible.builtin.import_tasks: build.yml
+- name: Create installation parent directories
+  ansible.builtin.file:
+    path: "{{ item }}"
+    state: directory
+    owner: root
+    group: root
+    mode: "0755"
+  loop:
+    - "{{ seriatim_source_dir | dirname }}"
+    - "{{ seriatim_binary_path | dirname }}"
+
+- name: Check out Seriatim source
+  ansible.builtin.git:
+    repo: "{{ seriatim_repository_url }}"
+    dest: "{{ seriatim_source_dir }}"
+    version: "{{ seriatim_version }}"
+    force: true
+  register: seriatim_checkout
+
+- name: Inspect the installed binary
+  ansible.builtin.stat:
+    path: "{{ seriatim_binary_path }}"
+  register: seriatim_binary
+
+- name: Read the installed Seriatim version
+  ansible.builtin.command:
+    argv:
+      - "{{ seriatim_binary_path }}"
+      - --version
+  register: seriatim_installed_version
+  changed_when: false
+  failed_when: false
+  when: seriatim_binary.stat.exists
+
+- name: Build Seriatim
+  ansible.builtin.command:
+    argv:
+      - /snap/bin/go
+      - build
+      - -trimpath
+      - -ldflags
+      - "-s -w -X gitea.maximumdirect.net/eric/seriatim/internal/buildinfo.Version={{ seriatim_version }}"
+      - -o
+      - "{{ seriatim_binary_path }}"
+      - ./cmd/seriatim
+    chdir: "{{ seriatim_source_dir }}"
+  environment:
+    CGO_ENABLED: "0"
+    GOTOOLCHAIN: local
+    GOWORK: "off"
+  register: seriatim_build
+  changed_when: true
+  when: >-
+    seriatim_checkout.changed or
+    not seriatim_binary.stat.exists or
+    seriatim_installed_version.rc | default(1) != 0 or
+    seriatim_installed_version.stdout | default('') != 'seriatim version ' ~ seriatim_version
+
+- name: Converge installed metadata
+  ansible.builtin.file:
+    path: "{{ item.path }}"
+    state: "{{ item.state }}"
+    owner: root
+    group: root
+    mode: "{{ item.mode | default(omit) }}"
+    recurse: "{{ item.recurse | default(omit) }}"
+  loop:
+    - path: "{{ seriatim_source_dir }}"
+      state: directory
+      recurse: true
+    - path: "{{ seriatim_binary_path }}"
+      state: file
+      mode: "0755"
+
+- name: Validate the built Seriatim version  # noqa no-handler
+  ansible.builtin.command:
+    argv:
+      - "{{ seriatim_binary_path }}"
+      - --version
+  register: seriatim_built_version
+  changed_when: false
+  failed_when: >-
+    seriatim_built_version.rc != 0 or
+    seriatim_built_version.stdout != 'seriatim version ' ~ seriatim_version
+  when: seriatim_build.changed