Upgrades policy config + policy verb. (#44296)

* Upgrades policy config + policy verb.

* Better example and proper default value.

* hr on top

* Cleanup

code/controllers/configuration/configuration.dm

@@ -19,6 +19,7 @@
 	var/list/mode_false_report_weight
 
 	var/motd
+	var/policy
 
 /datum/controller/configuration/proc/admin_reload()
 	if(IsAdminAdvancedProcCall())
@@ -47,6 +48,7 @@
 				break
 	loadmaplist(CONFIG_MAPS_FILE)
 	LoadMOTD()
+	LoadPolicy()
 
 /datum/controller/configuration/proc/full_wipe()
 	if(IsAdminAdvancedProcCall())
@@ -243,6 +245,34 @@
 	var/tm_info = GLOB.revdata.GetTestMergeInfo()
 	if(motd || tm_info)
 		motd = motd ? "[motd]<br>[tm_info]" : tm_info
+/*
+Policy file should be a json file with a single object.
+Value is raw html.
+
+Possible keywords : 
+Job titles / Assigned roles (ghost spawners for example) : Assistant , Captain , Ash Walker
+Mob types : /mob/living/simple_animal/hostile/carp
+Antagonist types : /datum/antagonist/highlander
+Species types : /datum/species/lizard
+special keywords defined in _DEFINES/admin.dm
+
+Example config:
+{
+    "Assistant" : "Don't kill everyone",
+    "/datum/antagonist/highlander" : "<b>Kill everyone</b>",
+    "Ash Walker" : "Kill all spacemans"
+}
+
+*/
+/datum/controller/configuration/proc/LoadPolicy()
+	policy = list()
+	var/rawpolicy = file2text("[directory]/policy.json")
+	if(rawpolicy)
+		var/parsed = json_decode(rawpolicy)
+		if(!parsed)
+			log_config("JSON parsing failure for policy.json")
+		else
+			policy = parsed
 
 /datum/controller/configuration/proc/loadmaplist(filename)
 	log_config("Loading config file [filename]...")

code/controllers/configuration/entries/game_options.dm

@@ -35,10 +35,6 @@
 /datum/config_entry/keyed_list/midround_antag/ValidateListEntry(key_name, key_value)
 	return key_name in config.modes
 
-/datum/config_entry/keyed_list/policy
-	key_mode = KEY_MODE_TEXT
-	value_mode = VALUE_MODE_TEXT
-
 /datum/config_entry/number/damage_multiplier
 	config_entry_value = 1
 	integer = FALSE