class DbDumpController < ApplicationController
	before_action :authenticate_admin # Optional: Schutz davor
	
	def index
	end
	
	def dump
		filename = "dump_#{Time.now.strftime('%Y%m%d_%H%M%S')}.sql"
		filepath = Rails.root.join("tmp", filename)
		
		db_config = ActiveRecord::Base.connection_db_config.configuration_hash
		cmd = [
			"pg_dump",
			"-U", db_config[:username],
			"-h", db_config[:host] || "localhost",
			"-p", (db_config[:port] || 5432).to_s,
			db_config[:database],
			"-f", filepath.to_s
		]
		
		
		
		ENV["PGPASSWORD"] = db_config[:password].to_s
		
		success = system(*cmd)
		
		ENV["PGPASSWORD"] = nil
		
		if File.exist?(filepath)
			send_file filepath, type: "application/sql", filename: filename
		else
			render plain: "Dump fehlgeschlagen ❌", status: 500
		end
	end
	
	def restore
		uploaded = params[:dump_file]
		return render plain: "Keine Datei", status: 400 unless uploaded
		
		filepath = Rails.root.join("tmp", "upload_restore.sql")
		File.binwrite(filepath, uploaded.read)
		
		db_config = ActiveRecord::Base.connection_db_config.configuration_hash
		
		cmd = [
			"psql",
			"-U", db_config[:username],
			"-h", db_config[:host] || "localhost",
			"-p", (db_config[:port] || 5432).to_s,
			db_config[:database],
			"-f", filepath.to_s
		]
		
		ENV["PGPASSWORD"] = db_config[:password].to_s
		
		result = system(*cmd)
		
		ENV["PGPASSWORD"] = nil
		if result
			render plain: "Restore erfolgreich ✅"
		else
			render plain: "Restore fehlgeschlagen ❌", status: 500
		end
	end
	
end