From fedd5ba9fc4e8a76b2b4e4226b0febde810810ee Mon Sep 17 00:00:00 2001
From: Alexey Melnichuk <mimir@newmail.ru>
Date: Mon, 30 Nov 2015 10:22:55 +0300
Subject: [PATCH] Add. Text class to manage translate texts.

---
 .../scripts/app/voicemail/app_languages.lua   |  3 +-
 .../resources/functions/send_email.lua        | 13 ++--
 .../scripts/resources/functions/text.lua      | 71 +++++++++++++++++++
 3 files changed, 78 insertions(+), 9 deletions(-)
 create mode 100644 resources/install/scripts/resources/functions/text.lua

diff --git a/resources/install/scripts/app/voicemail/app_languages.lua b/resources/install/scripts/app/voicemail/app_languages.lua
index 0c2daed73b..57dc356a16 100644
--- a/resources/install/scripts/app/voicemail/app_languages.lua
+++ b/resources/install/scripts/app/voicemail/app_languages.lua
@@ -1,4 +1,4 @@
-text = {};
+text = text or {};
 
 text['label-download'] = {};
 text['label-download']['en-us'] = "Download";
@@ -24,3 +24,4 @@ text['label-attached']['fr-fr'] = "Attaché";
 text['label-attached']['de-de'] = "im Anhang";
 text['label-attached']['de-at'] = "im Anhang";
 
+return text
\ No newline at end of file
diff --git a/resources/install/scripts/app/voicemail/resources/functions/send_email.lua b/resources/install/scripts/app/voicemail/resources/functions/send_email.lua
index 0cb437c19e..0480f8c9dd 100644
--- a/resources/install/scripts/app/voicemail/resources/functions/send_email.lua
+++ b/resources/install/scripts/app/voicemail/resources/functions/send_email.lua
@@ -25,10 +25,6 @@
 
 	local send_mail = require 'resources.functions.send_mail'
 
-	local function T(str)
-		return text[str][default_language..'-'..default_dialect] or text[str]['en-us']
-	end
-
 --define a function to send email
 	function send_email(id, uuid)
 		--get voicemail message details
@@ -58,7 +54,8 @@
 		--require the email address to send the email
 			if (string.len(voicemail_mail_to) > 2) then
 				--include languages file
-					require "app.voicemail.app_languages";
+					local Text = require "resources.functions.text"
+					local text = Text.new("app.voicemail.app_languages")
 
 				--get voicemail message details
 					sql = [[SELECT * FROM v_voicemail_messages
@@ -142,11 +139,11 @@
 					body = body:gsub("${sip_to_user}", id);
 					body = body:gsub("${dialed_user}", id);
 					if (voicemail_file == "attach") then
-						body = body:gsub("${message}", T'label-attached');
+						body = body:gsub("${message}", text['label-attached']);
 					elseif (voicemail_file == "link") then
-						body = body:gsub("${message}", "<a href='https://"..domain_name.."/app/voicemails/voicemail_messages.php?action=download&type=vm&t=bin&id="..id.."&voicemail_uuid="..db_voicemail_uuid.."&uuid="..uuid.."&src=email'>"..T'label-download'.."</a>");
+						body = body:gsub("${message}", "<a href='https://"..domain_name.."/app/voicemails/voicemail_messages.php?action=download&type=vm&t=bin&id="..id.."&voicemail_uuid="..db_voicemail_uuid.."&uuid="..uuid.."&src=email'>"..text['label-download'].."</a>");
 					else
-						body = body:gsub("${message}", "<a href='https://"..domain_name.."/app/voicemails/voicemail_messages.php?action=autoplay&id="..db_voicemail_uuid.."&uuid="..uuid.."'>"..T'label-listen'.."</a>");
+						body = body:gsub("${message}", "<a href='https://"..domain_name.."/app/voicemails/voicemail_messages.php?action=autoplay&id="..db_voicemail_uuid.."&uuid="..uuid.."'>"..text['label-listen'].."</a>");
 					end
 					body = body:gsub(" ", "&nbsp;");
 					body = body:gsub("%s+", "");
diff --git a/resources/install/scripts/resources/functions/text.lua b/resources/install/scripts/resources/functions/text.lua
new file mode 100644
index 0000000000..11bf0933a2
--- /dev/null
+++ b/resources/install/scripts/resources/functions/text.lua
@@ -0,0 +1,71 @@
+--- 
+-- @tparam table dict Dictionary
+-- @tparam[opt='en'] string language default language
+-- @tparam[opt='us'] string dialect default language
+-- @return[1] nil if key is unknown
+-- @return[2] empty string if language/dialect unknown or there no appropriate value for default language/dialect
+-- @return[3] translated value accordint dictionary/language/dialect
+-- 
+-- @usage
+-- local dict = {
+-- 	['label-text'] = {
+-- 		['en-us'] = 'text';
+-- 		['ru-ru'] = 'текст';
+-- 	}
+-- }
+-- local text = Text.new(dict)
+-- -- use global `default_language` and `default_dialect` to resolve language
+-- var = text['label-attached']
+-- -- use prefix form
+-- var = text'label-attached'
+-- -- Implicit specify language
+-- var = text('label-attached', 'ru', 'ru')
+-- -- set global variables(you can set them even after ctor call)
+-- default_language, default_dialect = 'ru', 'ru'
+-- var = text['label-attached']
+local function make_text(dict, language, dialect)
+	if not (language and dialect) then
+		language, dialect = 'en', 'us'
+	end
+
+	if type(dict) == 'string' then
+		dict = require(dict)
+	end
+
+	local default = (language .. '-' .. dialect):lower()
+
+	local function index(_, k)
+		local t = dict[k]
+		if not t then return end
+
+		local lang
+		if default_language and default_dialect then
+			lang = (default_language .. '-' .. default_dialect):lower()
+		end
+		if not lang then lang = default end
+		return t[lang] or t[default] or ''
+	end
+
+	local function call(self, k, language, dialect)
+		if language and dialect then
+			local t = dict[k]
+			if not t then return end
+			local lang = (language .. '-' .. dialect):lower()
+			local v = t[lang]
+			if v then return v end
+		end
+		return self[k]
+	end
+
+	return setmetatable({},{
+		__newindex = function()
+			error('Can not add field to proxy')
+		end;
+		__index = index;
+		__call  = call;
+	})
+end
+
+return {
+	new = make_text;
+}
\ No newline at end of file