class DashboardsController < ApplicationController
	def show
		@spent_minutes_matrix     = {}
		@remaining_minutes_matrix = {}
		
		# Alle Kombinationen holen
		@time_by_typ_art = current_user.entries
		                   .group(:praktikums_typ, :entry_art)
		                   .select(:praktikums_typ, :entry_art)
		                   .group_by(&:praktikums_typ)
		                   .transform_values { |entries| entries.map(&:entry_art).uniq }
		
		# Matrix-Daten aufbauen (muss zuerst passieren!)
		@time_by_typ_art.each do |typ, arts|
			@spent_minutes_matrix[typ] ||= {}
			@remaining_minutes_matrix[typ] ||= {}
			
			arts.each do |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][art] = spent_minutes
				@remaining_minutes_matrix[typ][art] = remaining
			end
		end
		
		# Jetzt können wir sauber summieren!
		@total_minutes = 0
		@remaining_total = 0
		
		@spent_minutes_matrix.each do |typ, arts|
			arts.each do |art, spent|
				@total_minutes += spent.to_i
				@remaining_total += @remaining_minutes_matrix.dig(typ, art).to_i
			end
		end
		
		@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.order(date: :desc).first
	end
end