Add insertion of messages into global storage mail.messages.json

api.lua

@@ -94,12 +94,8 @@ function mail.send(...)
 		time    = os.time(),
 	}
 	
-	-- send the mail to all recipients
+	-- insert in global storage
-	for recipient in pairs(recipients) do
+	mail.addMessage(msg)
-		local messages = mail.getMessages(recipient)
-		table.insert(messages, 1, msg)
-		mail.setMessages(recipient, messages)
-	end
 
 	-- notify recipients that happen to be online
 	local mail_alert = f(mail.receive_mail_message, m.from, m.subject)

gui.lua

@@ -97,7 +97,7 @@ end
 
 function mail.show_inbox(name)
 	local formspec = { mail.inbox_formspec }
-	local messages = mail.getMessages(name)
+	local messages = mail.getPlayerMessages(name)
 
 	message_drafts[name] = nil
 
@@ -148,7 +148,7 @@ function mail.show_sent(name)
 	local playerContacts = mail.getContacts(name)
 	local nbMails = 0
 	for k, contact, i, l in mail.pairsByKeys(playerContacts) do
-		local contactMessages = mail.getMessages(contact.name)
+		local contactMessages = mail.getPlayerMessages(contact.name)
 
 		message_drafts[name] = nil
 
@@ -317,7 +317,7 @@ function mail.compile_contact_list(name, selected, playernames)
 end
 
 function mail.show_message(name, msgnumber)
-	local messages = mail.getMessages(name)
+	local messages = mail.getPlayerMessages(name)
 	local message = messages[msgnumber]
 	local formspec = [[
 			size[8,9]
@@ -444,7 +444,7 @@ function mail.handle_receivefields(player, formname, fields)
 
 	elseif formname == "mail:inbox" or formname == "mail:sent" then
 		local name = player:get_player_name()
-		local messages = mail.getMessages(name)
+		local messages = mail.getPlayerMessages(name)
 
 		if fields.messages then
 			local evt = minetest.explode_table_event(fields.messages)
@@ -525,7 +525,7 @@ function mail.handle_receivefields(player, formname, fields)
 
 	elseif formname == "mail:message" then
 		local name = player:get_player_name()
-		local messages = mail.getMessages(name)
+		local messages = mail.getPlayerMessages(name)
 
 		if fields.back then
 			if boxtab_index == 1 then

onjoin.lua

@@ -1,6 +1,6 @@
 minetest.register_on_joinplayer(function(player)
 	minetest.after(2, function(name)
-		local messages = mail.getMessages(name)
+		local messages = mail.getPlayerMessages(name)
 
 		local unreadcount = 0
 

storage.lua

@@ -1,4 +1,3 @@
-
 function mail.getMailFile(playername)
 	local saneplayername = string.gsub(playername, "[.|/]", "")
 	return mail.maildir .. "/" .. saneplayername .. ".json"
@@ -9,8 +8,24 @@ function mail.getContactsFile(playername)
 	return mail.maildir .. "/contacts/" .. saneplayername .. ".json"
 end
 
+function mail.getMessages()
+	local messages = mail.read_json_file(mail.maildir .. "/mail.messages.json")
+	if messages then
+		for _, msg in ipairs(messages) do
+			if not msg.time then
+				-- add missing time field if not available (happens with old data)
+				msg.time = 0
+			end
+		end
 
-function mail.getMessages(playername)
+		-- sort by received date descending
+		table.sort(messages, function(a,b) return a.time > b.time end)
+	end
+
+	return messages
+end
+
+function mail.getPlayerMessages(playername)
 	local messages = mail.read_json_file(mail.getMailFile(playername))
 	if messages then
 		for _, msg in ipairs(messages) do
@@ -39,6 +54,16 @@ function mail.setMessages(playername, messages)
 	end
 end
 
+function mail.addMessage(message)
+	local messages = mail.getMessages()
+	table.insert(messages, 1, message)
+	if mail.write_json_file(mail.maildir .. "/mail.messages.json", messages) then
+		return true
+	else
+		minetest.log("error","[mail] Save failed - messages may be lost!")
+		return false
+	end
+end
 
 function mail.getContacts(playername)
 	return mail.read_json_file(mail.getContactsFile(playername))