Add admin panel for users and votes

Closes #2

vedia.rb

@@ -91,6 +91,7 @@ post '/signup' do
     @user.password = hash_password(params[:password])
   end
   if @errors.empty? and @user.valid?
+    @user.admin = true if @user.id == 1
     @user.save
     session.clear
     session[:user_id] = @user.id
@@ -192,6 +193,71 @@ post '/logout' do
   redirect '/login'
 end
 
+get '/admin' do
+  require_admin
+  @users = User.all
+  @votes = Vote.all
+  erb :admin
+end
+
+get '/admin/users/:id' do
+  require_admin
+  @user = User.find(params[:id])
+  erb :admin_users
+end
+
+get '/admin/users/:id/organizers/:vote/delete' do
+  require_admin
+  rating = Organizer.where(user: params[:id]).where(vote: params[:vote]).each do |organizer|
+    organizer.destroy
+  end
+  redirect "/admin/users/#{params[:id]}"
+end
+
+get '/admin/users/:id/ratings/:vote/delete' do
+  require_admin
+  rating = Rating.where(user: params[:id]).where(vote: params[:vote]).each do |rating|
+    rating.destroy
+  end
+  redirect "/admin/users/#{params[:id]}"
+end
+
+post '/admin/users/:id/delete' do
+  require_admin
+  @user = User.find(params[:id])
+  @user.destroy
+  redirect '/admin'
+end
+
+get '/admin/votes/:id' do
+  require_admin
+  @vote = Vote.find(params[:id])
+  erb :admin_votes
+end
+
+get '/admin/votes/:id/organizers/:user/delete' do
+  require_admin
+  rating = Organizer.where(vote: params[:id]).where(user: params[:user]).each do |organizer|
+    organizer.destroy
+  end
+  redirect "/admin/votes/#{params[:id]}"
+end
+
+get '/admin/votes/:id/ratings/:user/delete' do
+  require_admin
+  rating = Rating.where(vote: params[:id]).where(user: params[:user]).each do |rating|
+    rating.destroy
+  end
+  redirect "/admin/votes/#{params[:id]}"
+end
+
+post '/admin/votes/:id/delete' do
+  require_admin
+  @vote = Vote.find(params[:id])
+  @vote.destroy
+  redirect '/admin'
+end
+
 get '/votes/new' do
   require_login
   erb :votes_new
@@ -370,10 +436,18 @@ helpers do
     end
   end
 
+  def is_admin
+    current_user and current_user.admin
+  end
+
   def require_login
     redirect '/login' unless current_user
   end
 
+  def require_admin
+    redirect '/' unless is_admin
+  end
+
   def find_vote
     @vote = Vote.find_by(secure_id: params[:id])
   end
@@ -399,6 +473,10 @@ helpers do
   end
 
   def format_date(timestamp)
+    "#{TZInfo::Timezone.get(session[:timezone]).to_local(timestamp).strftime('%F')}"
+  end
+
+  def format_date_and_time(timestamp)
     "#{TZInfo::Timezone.get(session[:timezone]).to_local(timestamp).strftime('%F %R')} (#{session[:timezone].gsub('_', ' ')})"
   end
 end