Add JSON API endpoints and personal access tokens

app/controllers/application_controller.rb

@@ -1,9 +1,49 @@
 class ApplicationController < ActionController::Base
-  before_action :authenticate_user!
+  skip_forgery_protection if: :bearer_token_present?
+
+  before_action :authenticate_request!
 
   def execute_read_task
     system('rake read')
     flash[:notice] = "Read task executed!"
     redirect_back_or_to root_path
   end
+
+  def current_user
+    @current_user || super
+  end
+
+  private
+
+  def authenticate_request!
+    if request.format.json?
+      authenticate_with_personal_access_token!
+    else
+      authenticate_user!
+    end
+  end
+
+  def authenticate_with_personal_access_token!
+    pat = PersonalAccessToken.authenticate(bearer_token)
+
+    if pat
+      touch_last_used_at(pat)
+      @current_user = pat.user
+    else
+      render json: { error: "Unauthorized" }, status: :unauthorized
+    end
+  end
+
+  def touch_last_used_at(pat)
+    return if pat.last_used_at && pat.last_used_at > 1.minute.ago
+    pat.update_column(:last_used_at, Time.current)
+  end
+
+  def bearer_token
+    request.authorization.to_s[/\ABearer\s+(.+)\z/i, 1]&.strip
+  end
+
+  def bearer_token_present?
+    bearer_token.present?
+  end
 end

app/controllers/links_controller.rb

@@ -9,11 +9,25 @@ def index
       Link
     end
     @links = scope.order("published_at DESC NULLS LAST")
+
+    respond_to do |format|
+      format.html
+      format.json { render json: @links.map { |l| link_json(l) } }
+    end
   end
 
   # GET /links/1
   def show
     @grouped_social_media_snippets = @link.social_media_snippets.group_by(&:social_media_type)
+
+    respond_to do |format|
+      format.html
+      format.json do
+        render json: link_json(@link).merge(
+          social_media_snippets: @link.social_media_snippets.map { |s| snippet_json(s) }
+        )
+      end
+    end
   end
 
   private
@@ -26,4 +40,26 @@ def set_link
     def link_params
       params.require(:link).permit(:url, :title, :description)
     end
+
+    def link_json(link)
+      {
+        id: link.id,
+        url: link.url,
+        title: link.title,
+        description: link.description,
+        open_graph_description: link.open_graph_description,
+        published_at: link.published_at,
+        created_at: link.created_at,
+        updated_at: link.updated_at
+      }
+    end
+
+    def snippet_json(snippet)
+      {
+        id: snippet.id,
+        social_media_type: snippet.social_media_type,
+        content: snippet.content,
+        created_at: snippet.created_at
+      }
+    end
 end

app/controllers/personal_access_tokens_controller.rb

@@ -0,0 +1,32 @@
+class PersonalAccessTokensController < ApplicationController
+  def index
+    @personal_access_tokens = current_user.personal_access_tokens.order(created_at: :desc)
+    @new_token = PersonalAccessToken.new
+  end
+
+  def create
+    @new_token = current_user.personal_access_tokens.build(token_params)
+
+    if @new_token.save
+      @personal_access_tokens = current_user.personal_access_tokens.order(created_at: :desc)
+      @raw_token = @new_token.token
+      flash.now[:notice] = "Token created. Copy it now — it won't be shown again."
+      render :index, status: :created
+    else
+      @personal_access_tokens = current_user.personal_access_tokens.order(created_at: :desc)
+      render :index, status: :unprocessable_entity
+    end
+  end
+
+  def destroy
+    token = current_user.personal_access_tokens.find(params[:id])
+    token.destroy
+    redirect_to personal_access_tokens_path, notice: "Token revoked."
+  end
+
+  private
+
+  def token_params
+    params.require(:personal_access_token).permit(:name)
+  end
+end

app/controllers/shares_controller.rb

@@ -5,6 +5,11 @@ class SharesController < ApplicationController
   # GET /shares
   def index
     @shares = @link.shares
+
+    respond_to do |format|
+      format.html
+      format.json { render json: @shares.map { |s| share_json(s) } }
+    end
   end
 
   # GET /shares/1
@@ -49,4 +54,21 @@ def set_share
     def share_params
       params.require(:share).permit(:link_id, :shortened_url, :utm_source, :utm_medium, :utm_campaign, :utm_term, :utm_content, :utm_id, :shared_link_name)
     end
+
+    def share_json(share)
+      {
+        id: share.id,
+        link_id: share.link_id,
+        shortened_url: share.shortened_url,
+        utm_source: share.utm_source,
+        utm_medium: share.utm_medium,
+        utm_campaign: share.utm_campaign,
+        utm_term: share.utm_term,
+        utm_content: share.utm_content,
+        utm_id: share.utm_id,
+        shared_link_name: share.shared_link_name,
+        created_at: share.created_at,
+        updated_at: share.updated_at
+      }
+    end
 end

app/models/personal_access_token.rb

@@ -0,0 +1,34 @@
+require "digest"
+require "securerandom"
+
+class PersonalAccessToken < ApplicationRecord
+  TOKEN_PREFIX = "lib_".freeze
+
+  belongs_to :user
+
+  validates :name, presence: true
+  validates :token_digest, presence: true, uniqueness: true
+
+  attr_reader :token
+
+  before_validation :assign_token, on: :create
+
+  def self.authenticate(raw_token)
+    return nil if raw_token.blank?
+    pat = find_by(token_digest: digest_for(raw_token))
+    return nil if pat && pat.expires_at && pat.expires_at <= Time.current
+    pat
+  end
+
+  def self.digest_for(raw_token)
+    Digest::SHA256.hexdigest(raw_token)
+  end
+
+  private
+
+  def assign_token
+    return if token_digest.present?
+    @token = "#{TOKEN_PREFIX}#{SecureRandom.hex(32)}"
+    self.token_digest = self.class.digest_for(@token)
+  end
+end

app/models/user.rb

@@ -1,3 +1,5 @@
 class User < ApplicationRecord
   include OmbuLabsAuthenticable
+
+  has_many :personal_access_tokens, dependent: :destroy
 end

app/views/personal_access_tokens/index.html.erb

@@ -0,0 +1,59 @@
+<p style="color: green"><%= notice %></p>
+
+<% if flash[:raw_token].present? %>
+  <div class="mb-6 p-4 border rounded bg-yellow-50">
+    <p class="font-semibold mb-2">Your new token (copy it now — it won't be shown again):</p>
+    <code class="block p-2 bg-white border rounded break-all"><%= flash[:raw_token] %></code>
+  </div>
+<% end %>
+
+<h1 class="text-2xl mb-4">Personal Access Tokens</h1>
+
+<div class="mb-6 p-4 border rounded">
+  <h2 class="text-lg mb-2">Create a new token</h2>
+  <%= form_with model: @new_token, url: personal_access_tokens_path, local: true do |f| %>
+    <% if @new_token.errors.any? %>
+      <ul class="text-red-600 mb-2">
+        <% @new_token.errors.full_messages.each do |msg| %>
+          <li><%= msg %></li>
+        <% end %>
+      </ul>
+    <% end %>
+
+    <div class="mb-2">
+      <%= f.label :name, "Name" %>
+      <%= f.text_field :name, class: "border rounded px-2 py-1 ml-2", placeholder: "e.g. Local script" %>
+    </div>
+
+    <%= f.submit "Generate token", class: "inline-block border rounded py-1 px-3" %>
+  <% end %>
+</div>
+
+<h2 class="text-lg mb-2">Your tokens</h2>
+
+<% if @personal_access_tokens.any? %>
+  <table class="w-full border-collapse">
+    <thead>
+      <tr class="border-b">
+        <th class="text-left py-2">Name</th>
+        <th class="text-left py-2">Created</th>
+        <th class="text-left py-2">Last used</th>
+        <th></th>
+      </tr>
+    </thead>
+    <tbody>
+      <% @personal_access_tokens.each do |token| %>
+        <tr class="border-b">
+          <td class="py-2"><%= token.name %></td>
+          <td class="py-2"><%= token.created_at.to_date %></td>
+          <td class="py-2"><%= token.last_used_at ? token.last_used_at.to_date : "Never" %></td>
+          <td class="py-2 text-right">
+            <%= button_to "Revoke", personal_access_token_path(token), method: :delete, data: { turbo_confirm: "Revoke this token?" }, class: "inline-block border rounded py-1 px-3" %>
+          </td>
+        </tr>
+      <% end %>
+    </tbody>
+  </table>
+<% else %>
+  <p>No tokens yet.</p>
+<% end %>

app/views/shared/_navigation_bar.html.erb

@@ -21,6 +21,7 @@
 
   <li class="mr-3 ml-auto flex items-center">
     <span><%= current_user.email %></span>
+    <%= link_to "API Tokens", personal_access_tokens_path, class: "inline-block border rounded py-1 px-3 ml-2" %>
     <%= button_to "Sign out", ombu_labs_auth.destroy_user_session_path, method: :delete, class: "inline-block border rounded py-1 px-3" %>
   </li>
 </ul>

config/routes.rb

@@ -6,5 +6,7 @@
   end
   post 'execute_read_task', to: 'application#execute_read_task'
 
+  resources :personal_access_tokens, only: [:index, :create, :destroy]
+
   mount OmbuLabs::Auth::Engine, at: '/', as: 'ombu_labs_auth'
 end

db/migrate/20260429134259_create_personal_access_tokens.rb

@@ -0,0 +1,15 @@
+class CreatePersonalAccessTokens < ActiveRecord::Migration[7.0]
+  def change
+    create_table :personal_access_tokens do |t|
+      t.references :user, null: false, foreign_key: true
+      t.string :name, null: false
+      t.string :token_digest, null: false
+      t.datetime :last_used_at
+      t.datetime :expires_at
+
+      t.timestamps
+    end
+
+    add_index :personal_access_tokens, :token_digest, unique: true
+  end
+end

spec/factories/personal_access_tokens.rb

@@ -0,0 +1,6 @@
+FactoryBot.define do
+  factory :personal_access_token do
+    sequence(:name) { |n| "Token ##{n}" }
+    user
+  end
+end