Class: RailsWayback::PagesController

Inherits:
ApplicationController show all
Defined in:
app/controllers/rails_wayback/pages_controller.rb

Overview

JSON endpoints consumed by the bar's JavaScript to populate the branch and commit selectors. All rendering of the actual UI lives in the middleware; this controller only exposes git metadata.

Constant Summary collapse

WAYBACK_COOKIES = 
%w[rails_wayback_ref rails_wayback_branch].freeze

Instance Method Summary collapse

Instance Method Details

#branches ⇒ Object 



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# File 'app/controllers/rails_wayback/pages_controller.rb', line 14

def branches
  current_branch = safe_call { git.current_branch }
  current_commit = safe_call { git.current_commit }
  references = safe_call { git.references }
  list = references.value || []

  render json: {
    current_branch: current_branch.value,
    current_commit: current_commit.value,
    branches: list.select { |reference| reference.kind == :branch }.map(&:name),
    refs: list.map { |reference| reference_json(reference) },
    errors: [references.error].compact
  }
end

#commits ⇒ Object 



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# File 'app/controllers/rails_wayback/pages_controller.rb', line 29

def commits
  selector = params[:branch].to_s.sub(/\.json\z/, "")
  result = safe_call do
    reference = git.reference(selector)
    [reference, git.commits(reference.full_name)]
  end
  reference, commits = result.value

  list = (commits || []).map do |commit|
    {
      sha: commit.sha,
      short_sha: commit.short_sha,
      subject: commit.subject,
      author: commit.author,
      date: commit.date
    }
  end

  render json: {
    branch: reference&.name || selector,
    ref: reference && reference_json(reference),
    commits: list,
    error: result.error
  }
end

#reset ⇒ Object

Emergency escape hatch that does not render any host application view. It remains usable when a historical template crashes before the injected toolbar can render its normal Return to HEAD control.



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# File 'app/controllers/rails_wayback/pages_controller.rb', line 58

def reset
  WAYBACK_COOKIES.each { |name| response.delete_cookie(name, path: "/") }
  redirect_to safe_return_to, allow_other_host: false
end