wip: add commit-info command

lib/commit_info.rb

@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+require_relative './base_action'
+require_relative './commit'
+
+class CommitInfo < BaseAction
+  COMMIT_URL = 'https://api.github.com/repos/%s/commits/%s'
+
+  attr_reader :ref
+  attr_reader :repo
+  attr_reader :logger
+
+  def initialize(ref:, repo:, logger:)
+    @ref = ref
+    @repo = repo
+    @logger = logger
+
+    err 'branch/tag/sha argument cannot be empty' if ref.nil? || ref.empty?
+  end
+
+  def perform
+    info "Fetching info for git ref: #{ref}"
+
+    url = format(COMMIT_URL, repo, ref)
+    commit_json = http_get(url)
+
+    err "Failed to get commit info about: #{ref}" if commit_json.nil?
+
+    parsed = JSON.parse(commit_json)
+    commit = Commit.new(
+      repo: repo,
+      ref: ref,
+      sha: parsed&.dig('sha'),
+      message: parsed&.dig('commit', 'message'),
+      time: Time.parse(parsed&.dig('commit', 'committer', 'date')).utc
+    )
+
+    err 'Failed to get commit SHA' if commit.sha.nil? || commit.sha.empty?
+    err 'Failed to get commit time' if commit.time.nil?
+
+    commit
+  end
+end