add dashboard

app/controllers/dashboards_controller.rb

@@ -0,0 +1,29 @@
+# app/controllers/dashboards_controller.rb
+class DashboardsController < ApplicationController
+	def show
+		@entries = current_user.entries.order(date: :desc)
+		
+		valid_entries = @entries.select { |e| e.date.present? }
+		
+		@report = valid_entries.group_by { |e| e.date.beginning_of_month }
+		          .transform_values do |entries|
+			entries.group_by { |e| [e.praktikums_typ, e.entry_art] }
+			.transform_values do |subset|
+				minutes = subset.sum(&:total_minutes)
+				{ hours: minutes / 60, minutes: minutes % 60 }
+			end
+		end
+		
+		@monthly_minutes_chart_data = @report.transform_keys { |date| date.strftime("%b") }
+		                              .transform_values do |groups|
+			groups.values.sum { |data| data[:hours] * 60 + data[:minutes] }
+		end
+		
+		@monthly_targets = Hash.new(1500) # z.B. 25h im Monat als Ziel → 1500min
+		
+		@total_minutes = @entries.sum(&:total_minutes)
+		@last_entry = @entries.first
+		@completed_percent = ((@total_minutes.to_f / 10000) * 100).round(1)
+		@remaining_total = [10000 - @total_minutes, 0].max
+	end
+end

app/views/dashboards/_summary_tiles.html.erb

@@ -0,0 +1,36 @@
+<!-- Summary-Kacheln -->
+<div class="col-sm-6 col-lg-3">
+  <div class="card shadow-sm text-center">
+    <div class="card-body">
+      <h5 class="card-title">🕒 Gesamtzeit</h5>
+      <p class="display-6"><%= @total_minutes / 60 %>h <%= @total_minutes % 60 %>min</p>
+    </div>
+  </div>
+</div>
+
+<div class="col-sm-6 col-lg-3">
+  <div class="card shadow-sm text-center">
+    <div class="card-body">
+      <h5 class="card-title">🚧 Offen</h5>
+      <p class="display-6 text-warning"><%= @remaining_total / 60 %>h</p>
+    </div>
+  </div>
+</div>
+
+<div class="col-sm-6 col-lg-3">
+  <div class="card shadow-sm text-center">
+    <div class="card-body">
+      <h5 class="card-title">✅ Erledigt</h5>
+      <p class="display-6 text-success"><%= @completed_percent %>%</p>
+    </div>
+  </div>
+</div>
+
+<div class="col-sm-6 col-lg-3">
+  <div class="card shadow-sm text-center">
+    <div class="card-body">
+      <h5 class="card-title">📅 Letzter Eintrag</h5>
+      <p class="text-muted"><%= l(@last_entry.date, format: :long) if @last_entry %></p>
+    </div>
+  </div>
+</div>

app/views/dashboards/show.html.erb

@@ -0,0 +1,39 @@
+<h1 class="mb-4">📊 Dashboard</h1>
+
+<!-- Kacheln -->
+<div class="row g-4 mb-4">
+  <%= render partial: 'dashboards/summary_tiles' %>
+</div>
+
+<!-- Monatsverlauf als Bar Chart -->
+<div class="card shadow-sm mb-4">
+  <div class="card-body">
+    <h5 class="card-title">📈 Monatsverlauf</h5>
+    <%= column_chart @monthly_minutes_chart_data, height: "250px", colors: ["#0d6efd"] %>
+  </div>
+</div>
+
+<!-- Scrollbare Monatsübersicht mit ProgressBars -->
+<div class="d-flex overflow-auto gap-3 pb-3">
+  <% @report.each do |month, groups| %>
+    <% total_minutes = groups.values.map { |data| (data[:hours] * 60 + data[:minutes]) }.sum %>
+    <% total_hours = total_minutes / 60 %>
+    <% rest_min = total_minutes % 60 %>
+    <% percent = ((total_minutes.to_f / @monthly_targets[month]) * 100).round rescue 0 %>
+
+    <div class="card flex-shrink-0 shadow-sm" style="min-width: 320px;">
+      <div class="card-header bg-white fw-bold"><%= month.strftime("%B %Y") %></div>
+      <div class="card-body">
+        <p class="mb-2">⏱️ <strong><%= total_hours %>h <%= rest_min %>min</strong></p>
+        <p class="mb-1">🎯 Ziel: <%= @monthly_targets[month] / 60 %>h</p>
+        <div class="progress" style="height: 20px;">
+          <div class="progress-bar <%= percent >= 100 ? 'bg-success' : 'bg-primary' %>" role="progressbar"
+               style="width: <%= [percent, 100].min %>%;" aria-valuenow="<%= percent %>"
+               aria-valuemin="0" aria-valuemax="100">
+            <%= percent %>%
+          </div>
+        </div>
+      </div>
+    </div>
+  <% end %>
+</div>

config/routes.rb

@@ -20,7 +20,7 @@ Rails.application.routes.draw do
 	get "/calendar/week/:year/:week",   to: "calendar#week",  as: :calendar_week
 	
 	resources :mileage_rates, only: [:index, :new, :create, :edit, :update]
-	
+	resource :dashboard, only: [:show]
 	
 	resources :entries do
 		post :start_timer, on: :collection