Delete announcement

api.lua

@@ -11,3 +11,20 @@ function yl_announcements.get_announcement(a_id)
     end
     return yl_announcements.error
 end
+
+function yl_announcements.delete(a_id)
+    local announcements = yl_announcements.get_all_anncouncements()
+    local data = {}
+    local success = false
+    for _, announcement in pairs(announcements) do
+        if announcement.id ~= a_id then
+            table.insert(data,announcement)
+        else
+            success = true
+        end
+    end
+    if success ~= true then
+        data = "Could not find announcement with id " .. a_id
+    end
+    return success, data
+end

internal.lua

@@ -1,17 +1,47 @@
+
+-- Storage
+
 function yl_announcements.load_announcements()
     yl_announcements.data = minetest.parse_json(yl_announcements.mod_storage:get_string("data")) or {}
 end
 
-function yl_announcements.save_announcements()
-    yl_announcements.mod_storage:set_string("data", minetest.write_json(yl_announcements.data))
+function yl_announcements.save_announcements(data)
+    yl_announcements.mod_storage:set_string("data", minetest.write_json(data))
 end
 
 -- Chatcommands
 
 function yl_announcements.chatcommand_announcement_add(name, param)
+	-- defense
+
 end
 
 function yl_announcements.chatcommand_announcement_delete(name, param)
+	-- defense
+	local player = minetest.get_player_by_name(name)
+	if not player then
+		return false, "Player not online"
+	end
+	if param == "" then
+		return false, "Announcement ID missing"
+	end
+	local n_param = tonumber(param)
+	if type(n_param) ~= "number" then
+		return false, "Announcement ID not a number"
+	end
+	local announcement = yl_announcements.get_announcement(n_param)
+	if announcement == yl_announcements.error then
+		return false, "Cannot find announcement with given ID"
+	end
+	-- Delete the entry
+	local success, data = yl_announcements.delete(n_param)
+	-- Save
+	if success == false then
+		return false, data
+	else
+		yl_announcements.save_announcements(data)
+		return true, "Deleted announcement ID " .. param
+	end
 end
 
 function yl_announcements.chatcommand_announcement_list_all(name, param)