class DashboardsController < ApplicationController
	def show
		@spent_minutes_matrix     = {}
		@remaining_minutes_matrix = {}
		
		# Alle Kombinationen aus Typ & Art
		@typ_art_combinations = User::PRAKTIKUMSTYPEN.product(User::ENTRY_ARTEN)
		
		@spent_minutes_matrix = {}
		@remaining_minutes_matrix = {}
		
		@typ_art_combinations.each do |typ, art|
			spent_minutes = current_user.entries
			                .where(praktikums_typ: typ, entry_art: art)
			                .sum { |e| e.total_minutes.to_i }
			
			target = current_user.required_hours_matrix.dig(typ, art).to_i * 60
			remaining = [target - spent_minutes, 0].max
			
			@spent_minutes_matrix[typ] ||= {}
			@remaining_minutes_matrix[typ] ||= {}
			
			@spent_minutes_matrix[typ][art] = spent_minutes
			@remaining_minutes_matrix[typ][art] = remaining
		end
		
		# Danach: Gesamtsummen & Prozent
		@total_minutes = @spent_minutes_matrix.values.flat_map(&:values).sum
		@remaining_total = @remaining_minutes_matrix.values.flat_map(&:values).sum
		
		@completed_percent = if (@total_minutes + @remaining_total) > 0
			                     ((@total_minutes.to_f / (@total_minutes + @remaining_total)) * 100).round(1)
			                   else
				                   0
		                     end
		
		@last_entry = current_user.entries
		              .where('date <= ?', Date.today)
		              .order(date: :desc)
		              .first
	end
end