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Final: App Working
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‎.idea/google-java-format.xml‎

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‎bootstrap-tasknexus-ruby.sh‎

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#!/usr/bin/env bash
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set -e
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# 1) Clean and create ruby/ structure
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rm -rf ruby
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mkdir -p ruby/{app/models,app/controllers,config,initializers,public}
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# 2) Gemfile
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cat > ruby/Gemfile << 'EOF'
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source 'https://rubygems.org'
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ruby '3.1.0'
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gem 'sinatra', require: 'sinatra/base'
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gem 'mongoid', '~> 7.3'
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gem 'jwt'
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gem 'bcrypt'
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gem 'rack-cors'
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gem 'json'
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EOF
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# 3) config/mongoid.yml
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cat > ruby/config/mongoid.yml << 'EOF'
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development:
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clients:
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default:
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uri: <%= ENV['MONGODB_URI'] || 'mongodb://127.0.0.1:27017/tasknexus_dev' %>
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production:
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clients:
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default:
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uri: <%= ENV['MONGODB_URI'] %>
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EOF
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# 4) initializers/jwt.rb
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cat > ruby/initializers/jwt.rb << 'EOF'
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JWT_SECRET = ENV['JWT_SECRET'] || 'super$ecretKey' # change in prod!
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def issue_token(payload)
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JWT.encode(payload, JWT_SECRET, 'HS256')
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end
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def decode_token(token)
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JWT.decode(token, JWT_SECRET, true, algorithm: 'HS256')[0]
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rescue
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nil
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end
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EOF
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# 5) app/models/user.rb
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cat > ruby/app/models/user.rb << 'EOF'
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require 'mongoid'
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require 'bcrypt'
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class User
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include Mongoid::Document
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include Mongoid::Timestamps
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field :username, type: String
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field :password_hash, type: String
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validates :username, presence: true, uniqueness: true
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validates :password_hash, presence: true
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def password=(raw)
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self.password_hash = BCrypt::Password.create(raw)
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end
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def authenticate(raw)
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BCrypt::Password.new(password_hash) == raw
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end
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end
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EOF
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# 6) app/models/task.rb
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cat > ruby/app/models/task.rb << 'EOF'
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require 'mongoid'
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class Task
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include Mongoid::Document
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include Mongoid::Timestamps
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field :title, type: String
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field :completed, type: Mongoid::Boolean, default: false
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field :position, type: Integer
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belongs_to :user
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validates :title, presence: true
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end
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EOF
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# 7) app/controllers/auth_controller.rb
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cat > ruby/app/controllers/auth_controller.rb << 'EOF'
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require 'sinatra/base'
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require 'json'
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require_relative '../models/user'
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require_relative '../../initializers/jwt'
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class AuthController < Sinatra::Base
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post '/register' do
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data = JSON.parse(request.body.read)
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user = User.new(username: data['username'])
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user.password = data['password']
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halt 400, { error: user.errors.full_messages }.to_json unless user.save
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token = issue_token({ user_id: user.id.to_s })
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{ token: token }.to_json
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end
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post '/login' do
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data = JSON.parse(request.body.read)
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user = User.find_by(username: data['username']) rescue nil
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halt 401, { error: 'Invalid credentials' }.to_json unless user&.authenticate(data['password'])
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{ token: issue_token({ user_id: user.id.to_s }) }.to_json
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end
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end
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EOF
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# 8) app/controllers/tasks_controller.rb
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cat > ruby/app/controllers/tasks_controller.rb << 'EOF'
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require 'sinatra/base'
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require 'json'
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require_relative '../models/task'
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require_relative '../models/user'
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require_relative '../../initializers/jwt'
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class TasksController < Sinatra::Base
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before do
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pass if request.path_info =~ %r{^/tasks/public}
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auth_header = request.env['HTTP_AUTHORIZATION'] || ''
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token = auth_header.split(' ').last
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payload = decode_token(token)
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halt 401, { error: 'Unauthorized' }.to_json unless payload
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@current_user = User.find(payload['user_id']) rescue nil
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halt 401, { error: 'Unauthorized' }.to_json unless @current_user
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end
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# public endpoint for stats
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get '/tasks/public/stats' do
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total = Task.count
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completed = Task.where(completed: true).count
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{ total: total, completed: completed, incomplete: total - completed }.to_json
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end
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# CRUD
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get '/tasks' do
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tasks = @current_user.tasks.order_by(:position.asc)
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tasks.to_json
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end
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post '/tasks' do
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data = JSON.parse(request.body.read)
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task = @current_user.tasks.new(title: data['title'], position: data['position'])
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halt 400, { error: task.errors.full_messages }.to_json unless task.save
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status 201
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task.to_json
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end
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put '/tasks/:id' do
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task = @current_user.tasks.find(params['id'])
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data = JSON.parse(request.body.read)
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task.update(title: data['title'], completed: data['completed'], position: data['position'])
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task.to_json
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end
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delete '/tasks/:id' do
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task = @current_user.tasks.find(params['id'])
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task.destroy
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status 204
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end
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end
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EOF
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# 9) app.rb (main entry)
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cat > ruby/app.rb << 'EOF'
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require 'sinatra/base'
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require 'mongoid'
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require 'rack/cors'
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require_relative './config/mongoid'
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require_relative './initializers/jwt'
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require_relative 'app/controllers/auth_controller'
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require_relative 'app/controllers/tasks_controller'
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Mongoid.load!('config/mongoid.yml', ENV['RACK_ENV'] || :development)
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class TaskNexusApp < Sinatra::Base
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use Rack::Cors do
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allow do
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origins '*'
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resource '*', headers: :any, methods: [:get, :post, :put, :delete, :options]
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end
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end
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use AuthController
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use TasksController
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get '/' do
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'TaskNexus API is running!'
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end
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end
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run TaskNexusApp
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EOF
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# 10) config.ru for Rack
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cat > ruby/config.ru << 'EOF'
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require './app'
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run TaskNexusApp
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EOF
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# 11) Dockerfile
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cat > ruby/Dockerfile << 'EOF'
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FROM ruby:3.1
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WORKDIR /usr/src/app
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COPY Gemfile* ./
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RUN bundle install
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COPY . .
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EXPOSE 4567
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CMD ["bundle", "exec", "rackup", "--host", "0.0.0.0", "-p", "4567"]
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EOF
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# 12) .env.example
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cat > ruby/.env.example << 'EOF'
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MONGODB_URI=mongodb://mongo:27017/tasknexus_prod
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JWT_SECRET=replace_with_strong_secret
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EOF
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echo "✅ Ruby backend scaffold complete under ruby/"
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echo "• To run locally without Docker:"
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echo " cd ruby"
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echo " export MONGODB_URI=mongodb://127.0.0.1:27017/tasknexus_dev"
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echo " bundle install"
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echo " bundle exec rackup"
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echo "• To run via Docker:"
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echo " cd ruby"
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echo " docker build -t hoangsonww/tasknexus-api ."
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echo " docker run -e MONGODB_URI=mongodb://host.docker.internal:27017/tasknexus_dev -e JWT_SECRET=you_choose --rm -p 4567:4567 hoangsonww/tasknexus-api"

‎ruby/.env.example‎

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MONGODB_URI=mongodb://mongo:27017/tasknexus_prod
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JWT_SECRET=replace_with_strong_secret

‎ruby/Dockerfile‎

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FROM ruby:3.1
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WORKDIR /usr/src/app
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COPY Gemfile* ./
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RUN bundle install
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COPY . .
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EXPOSE 4567
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CMD ["bundle", "exec", "rackup", "--host", "0.0.0.0", "-p", "4567"]

‎ruby/Gemfile‎

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source 'https://rubygems.org'
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ruby '3.1.0'
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gem 'sinatra', require: 'sinatra/base'
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gem 'mongoid', '~> 7.3'
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gem 'jwt'
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gem 'bcrypt'
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gem 'rack-cors'
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gem 'json'

‎ruby/app.rb‎

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require 'sinatra/base'
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require 'mongoid'
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require 'rack/cors'
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require_relative './config/mongoid'
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require_relative './initializers/jwt'
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require_relative 'app/controllers/auth_controller'
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require_relative 'app/controllers/tasks_controller'
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Mongoid.load!('config/mongoid.yml', ENV['RACK_ENV'] || :development)
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class TaskNexusApp < Sinatra::Base
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use Rack::Cors do
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allow do
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origins '*'
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resource '*', headers: :any, methods: [:get, :post, :put, :delete, :options]
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end
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end
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use AuthController
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use TasksController
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get '/' do
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'TaskNexus API is running!'
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end
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end
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run TaskNexusApp

‎ruby/app/controllers/auth_controller.rb‎

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require 'sinatra/base'
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require 'json'
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require_relative '../models/user'
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require_relative '../../initializers/jwt'
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class AuthController < Sinatra::Base
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post '/register' do
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data = JSON.parse(request.body.read)
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user = User.new(username: data['username'])
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user.password = data['password']
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halt 400, { error: user.errors.full_messages }.to_json unless user.save
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token = issue_token({ user_id: user.id.to_s })
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{ token: token }.to_json
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end
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post '/login' do
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data = JSON.parse(request.body.read)
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user = User.find_by(username: data['username']) rescue nil
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halt 401, { error: 'Invalid credentials' }.to_json unless user&.authenticate(data['password'])
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{ token: issue_token({ user_id: user.id.to_s }) }.to_json
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end
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end

‎ruby/app/controllers/tasks_controller.rb‎

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require 'sinatra/base'
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require 'json'
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require_relative '../models/task'
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require_relative '../models/user'
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require_relative '../../initializers/jwt'
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class TasksController < Sinatra::Base
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before do
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pass if request.path_info =~ %r{^/tasks/public}
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auth_header = request.env['HTTP_AUTHORIZATION'] || ''
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token = auth_header.split(' ').last
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payload = decode_token(token)
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halt 401, { error: 'Unauthorized' }.to_json unless payload
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@current_user = User.find(payload['user_id']) rescue nil
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halt 401, { error: 'Unauthorized' }.to_json unless @current_user
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end
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# public endpoint for stats
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get '/tasks/public/stats' do
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total = Task.count
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completed = Task.where(completed: true).count
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{ total: total, completed: completed, incomplete: total - completed }.to_json
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end
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# CRUD
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get '/tasks' do
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tasks = @current_user.tasks.order_by(:position.asc)
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tasks.to_json
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end
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post '/tasks' do
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data = JSON.parse(request.body.read)
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task = @current_user.tasks.new(title: data['title'], position: data['position'])
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halt 400, { error: task.errors.full_messages }.to_json unless task.save
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status 201
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task.to_json
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end
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put '/tasks/:id' do
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task = @current_user.tasks.find(params['id'])
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data = JSON.parse(request.body.read)
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task.update(title: data['title'], completed: data['completed'], position: data['position'])
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task.to_json
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end
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delete '/tasks/:id' do
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task = @current_user.tasks.find(params['id'])
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task.destroy
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status 204
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end
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end

‎ruby/app/models/task.rb‎

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require 'mongoid'
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class Task
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include Mongoid::Document
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include Mongoid::Timestamps
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field :title, type: String
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field :completed, type: Mongoid::Boolean, default: false
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field :position, type: Integer
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belongs_to :user
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validates :title, presence: true
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end

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