From 52b044d6a4278c229992404ad5801769c2d13363 Mon Sep 17 00:00:00 2001
From: Marius Peter <marius.peter@tutanota.com>
Date: Sun, 24 Aug 2025 20:29:54 +0200
Subject: First commit.

Vive le Castel Peter !
---
 app/controllers/dashboard_controller.rb | 45 +++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 app/controllers/dashboard_controller.rb

(limited to 'app/controllers/dashboard_controller.rb')

diff --git a/app/controllers/dashboard_controller.rb b/app/controllers/dashboard_controller.rb
new file mode 100644
index 0000000..4e9d560
--- /dev/null
+++ b/app/controllers/dashboard_controller.rb
@@ -0,0 +1,45 @@
+class DashboardController < ApplicationController
+  def index
+    # Raft allocation by crop type
+    @raft_data = raft_data_series
+
+    # Nutrient target table
+    @latest_measurement = NutrientMeasurement.order(measured_on: :desc, created_at: :desc).first
+    @target = TargetNutrientCalculator.call
+
+    # Measurement history table
+    @measurements = NutrientMeasurement.order(measured_on: :desc).limit(10)
+
+    @npk_measurement_data = measurement_data_series(:nno3, :p, :k)
+    @ammonium_measurement_data = measurement_data_series(:nnh4)
+  end
+
+  private
+
+  def raft_data_series
+    data_series = []
+
+    counts = Raft.left_outer_joins(:crop)
+               .group("crops.name", "crops.crop_type")
+               .count
+
+    counts.each do |(crop_name, crop_type), count|
+      name = (crop_name || "unassigned").titleize
+      type = (crop_type || "unassigned").titleize
+      data = { type => count }
+      data_series << { name:, data: }
+    end
+
+    unassigned, assigned = data_series.partition { |s| s[:name].casecmp("unassigned").zero? }
+    assigned + unassigned
+  end
+
+  def measurement_data_series(*nutrients)
+    nutrients.map do |formula|
+      { name: Nutrient.find_by!(formula:).name,
+        data: NutrientMeasurement
+          .order(:measured_on)
+          .pluck(:measured_on, formula) }
+    end
+  end
+end
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