generalizes recipe searching, adds chemistry functionality

code/modules/reagents/chemistry/holder.dm

@@ -27,7 +27,8 @@
 	//Randomized need to go last since they need to check against conflicts with normal recipes
 	var/paths = subtypesof(/datum/chemical_reaction) - typesof(/datum/chemical_reaction/randomized) + subtypesof(/datum/chemical_reaction/randomized)
 	GLOB.chemical_reactions_list = list()
-	GLOB.drink_reactions_list = list()
+	GLOB.normalized_chemical_reactions_list = list() // chemistry pda
+	GLOB.drink_reactions_list = list() // bartender pda
 
 	for(var/path in paths)
 
@@ -35,9 +36,11 @@
 		var/list/reaction_ids = list()
 		// store drinks separately for bartender cartridge
 		if(D.id)
+			var/datum/reagent/r = D.id
 			if(ispath(D.id, /datum/reagent/consumable))
-				var/datum/reagent/consumable/r = D.id
 				GLOB.drink_reactions_list[initial(r.name)] = D
+			if(ispath(D.id, /datum/reagent))
+				GLOB.normalized_chemical_reactions_list[initial(r.name)] = D
 
 		if(D.required_reagents && D.required_reagents.len)
 			for(var/reaction in D.required_reagents)
@@ -50,6 +53,31 @@
 			GLOB.chemical_reactions_list[id] += D
 			break // Don't bother adding ourselves to other reagent ids, it is redundant
 
+/proc/recipe_search(mob/M, list/reaction_list)
+	var/option = input(M, "Enter keyword to return a recipe.")
+	if(option)
+		option = lowertext(option)
+		var/list/reagents_required
+		var/found_reagent_name
+		var/required_temp
+		for(var/reagent_name in reaction_list)
+			if(findtext(lowertext(reagent_name), option))
+				var/datum/chemical_reaction/reaction = reaction_list[reagent_name]
+				found_reagent_name = reagent_name
+				reagents_required = reaction.required_reagents
+				required_temp = reaction.required_temp
+				break
+		if(length(reagents_required))
+			to_chat(M, "<b>Recipe found: [found_reagent_name]</b>[required_temp ? "<br>Required Temperature: [required_temp]K" : ""]<br>Required Reagents:")
+			var/reagents_required_string = ""
+			for(var/r in reagents_required)
+				var/datum/reagent/reagent = r
+				reagents_required_string += "<br>[initial(reagent.name)]: [reagents_required[r]]"
+			to_chat(M, reagents_required_string)
+			return
+		else
+			to_chat(M, "<span class='warning'>Reagent with term: [option] could not be located!</span>")
+
 ///////////////////////////////////////////////////////////////////////////////////
 
 /datum/reagents