add warning at low balances

5 files changed, 47 insertions, 2 deletions

diff --git a/abrechenbarkeit.lua b/abrechenbarkeit.lua
index cb9f30e..29de0ef 100755
--- a/abrechenbarkeit.lua
+++ b/abrechenbarkeit.lua
@@ -431,6 +431,19 @@ local function r_transaction_post()
         return error_box("{+error.open_log}")
     end
     local time = os.time()
+
+	-- check if new balance would be less than ;min
+	local bal = balances()[user_dst]
+	if amount < 0 and (( bal + amount ) <= (tonumber(config.balance_min) or -99999)) then
+		return format([[
+	        <div class="notif error"><p>{+user.form.transaction.funds}</p></div>
+		]], {
+			balance = format_amount(bal, "span", ""),
+			threshold = format_amount(tonumber(config.balance_min), "span", ""),
+		})
+	end
+
+    -- add transaction
     log:write(string.format("%d,%s,%s,%d,%s,%s,%s\n",
         time, user_src, user_dst, amount, 
         	pcode and (pcode .. (pname and " (" .. pname .. ")" or "")) or (pname or ""),
@@ -438,6 +451,7 @@ local function r_transaction_post()
         comment))
     log:flush()
     log:close()
+    
     return format([[
         <div class="notif"><p>{+user.form.transaction.success}: {amount} ({!comment})</p></div>
         <audio src="{sound}" autoplay></audio>
@@ -464,6 +478,12 @@ local function r_user(username)
         local new_user = balance == nil
         balance = balance or 0
         if notif then print(notif) end
+        if not is_special and balance <= (tonumber(config.balance_warning) or -99999) then
+        	print(format([[<div class="notif warning"><p><i>{+user.balance.warning}</i></p></div>]], {
+        		threshold = format_amount(tonumber(config["balance_warning"]), "span", ""),
+        		threshold2 = format_amount(tonumber(config["balance_min"]), "span", ""),
+        	}))
+        end
         if is_special then
             print(format([[<div class="notif"><p><i>{+user.special}</i></p></div>]]))
         end
diff --git a/locale/de.ini b/locale/de.ini
index ad2068e..13c84d8 100644
--- a/locale/de.ini
+++ b/locale/de.ini
@@ -29,6 +29,9 @@ time.minutes=Minuten
 time.second=Sekunde
 time.seconds=Sekunden
 user.balance=Kontostand
+user.balance.warning=Warnung: 
+dein Kontostand ist unter {threshold}. Du wirst unter {threshold2} nichts mehr kaufen können.
+user.form.transaction.funds=Fehler: diese Transaktion würde dein Konto unter {threshold} bringen, sie wurde nicht durchgeführt. ( {balance} ).
 user.shortcuts=Schnellzugriff
 user.form.buy.submit=Kaufen
 user.form.buy=Produkt kaufen
diff --git a/locale/en.ini b/locale/en.ini
index 03651b7..33f1516 100644
--- a/locale/en.ini
+++ b/locale/en.ini
@@ -61,6 +61,8 @@ time.minutes=minutes
 time.second=second
 time.seconds=seconds
 user.balance=Current balance
+user.balance.warning=Warning: your balance is below {threshold}. You are not able to purchase anything, if it will lower your balance bellow {threshold2}.
+user.form.transaction.funds=Error: this transaction would push you bellow {threshold}, it was not applied ( {balance} ).
 user.form.buy.submit=Buy
 user.form.buy=Buy Product
 user.form.restock.submit=Restock
@@ -79,4 +81,4 @@ user.view_log=View user log
 users.embezzlement=A total of {amount} are currently under embezzlement.
 users.filter=Filter
 users.inactive_list=Inactive Users
-users=Users
\ No newline at end of file
+users=Users
diff --git a/readme.md b/readme.md
index 544bb06..ba59815 100644
--- a/readme.md
+++ b/readme.md
@@ -16,6 +16,10 @@ useful for development or proxyless deployments.
 - `products` stores the product list as CSV (`barcode,price,user,name`)
 - `config` stores configuration parameters as ESV (`key=value`)
   - `transaction_sound`: URL to sound played when creating a transaction
+  - `language`: Language code, e.g. de, en, es, ja_en, nl, pt_BR, zh_Hans
+  - `balance_warning`: balance in cents to show warning at
+  - `balance_min`: minimum balance to be held by all users, in cents
+  - `unit`: unit used in the UI, e.g. €, $, EUR
 
 ## Migration from Strichliste
 
diff --git a/style.css b/style.css
index ce7329c..42232fe 100644
--- a/style.css
+++ b/style.css
@@ -86,13 +86,29 @@ nav> :last-child {
 }
 
 .notif.error {
-    background-color: rgb(118, 13, 13);
+    background-color: #8c2121;
+}
+
+.notif.error i {
+	color: black;
+}
+
+.notif.warning i {
+	/* color: black; */
+}
+
+.notif.warning {
+    background-color: #9b6501;
 }
 
 .notif p {
     margin: 5px;
 }
 
+.notif.warning {
+	background-color
+}
+
 /* landing page */
 .section {
     background-color: var(--b2);