first commit

Gemfile

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+# A sample Gemfile
+source "https://rubygems.org"
+
+gem "sinatra"
+gem "sinatra-contrib"
+gem "sequel"
+gem "sqlite3"

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    backports (3.6.4)
+    multi_json (1.10.1)
+    rack (1.6.0)
+    rack-protection (1.5.3)
+      rack
+    rack-test (0.6.3)
+      rack (>= 1.0)
+    sequel (4.18.0)
+    sinatra (1.4.5)
+      rack (~> 1.4)
+      rack-protection (~> 1.4)
+      tilt (~> 1.3, >= 1.3.4)
+    sinatra-contrib (1.4.2)
+      backports (>= 2.0)
+      multi_json
+      rack-protection
+      rack-test
+      sinatra (~> 1.4.0)
+      tilt (~> 1.3)
+    sqlite3 (1.3.10)
+    tilt (1.4.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  sequel
+  sinatra
+  sinatra-contrib
+  sqlite3

Rakefile

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+namespace :db do
+  require 'sequel'
+  Sequel.extension :migration
+
+  task :migrate do
+    m = Sequel::Migrator
+    db = Sequel.connect(ENV['DATABASE_URL'] || 'sqlite://library.sqlite')
+    dir = "migrations"
+
+    target = ENV['TARGET'] ? ENV['TARGET'].to_i : nil
+    current = ENV['CURRENT'] ? ENV['CURRENT'].to_i : nil
+
+    m.run(db, dir, target: target, current: current)
+  end
+end

app.rb

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+require "sinatra"
+require "sinatra/json"
+require "sequel"
+
+NODES = {}
+
+Sequel.connect(ENV["DATABASE_URL"] || "sqlite://meet4eat.db")
+
+class Node < Sequel::Model
+  def to_json(options={})
+    {
+      id: name,
+      room: room
+    }.to_json
+  end
+end
+
+get '/nodes' do
+  json({ nodes: Node.all })
+end
+
+put '/nodes/:id' do
+  node = Node.where(name: params[:id]).first
+  node ||= Node.new(name: params[:id])
+  node.room = params[:room] || "default"
+  node.save
+  json("")
+end
+
+delete '/nodes/:id' do
+  Node.where(name: params[:id]).delete
+  json("")
+end

migrations/1_init_db.rb

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+Sequel.migration do
+  change do
+    create_table(:nodes) do
+      primary_key :id
+      String :room, null: false
+      String :name, null: false
+    end
+  end
+end