feat: added spend limits to entity billing controls

server/src/_luaScriptsV2/customers/updateEntityInCustomer.lua

@@ -0,0 +1,73 @@
+--[[
+  Lua Script: Update Entity Fields in Cached FullCustomer
+
+  Atomically updates specific fields on an entity inside the cached
+  FullCustomer JSON object. Matches by entity id or internal_id.
+
+  KEYS[1] = FullCustomer cache key
+
+  ARGV[1] = JSON:
+    {
+      id_or_internal_id: string,
+      updates: { field: value, ... }
+    }
+
+  Returns JSON:
+    { "ok": true, "updated_count": number }
+    { "ok": false, "error": string }
+]]
+
+local cache_key = KEYS[1]
+local params = cjson.decode(ARGV[1])
+
+local id_or_internal_id = params.id_or_internal_id
+local updates = params.updates
+
+if not id_or_internal_id then
+  return cjson.encode({ ok = false, error = "missing_id_or_internal_id" })
+end
+
+if not updates then
+  return cjson.encode({ ok = false, error = "missing_updates" })
+end
+
+local raw = redis.call('JSON.GET', cache_key, '.')
+if not raw then
+  return cjson.encode({ ok = false, error = "cache_miss" })
+end
+
+local full_customer = cjson.decode(raw)
+
+if full_customer.entities == nil then
+  return cjson.encode({ ok = false, error = "no_entities" })
+end
+
+if #full_customer.entities == 0 then
+  return cjson.encode({ ok = false, error = "empty_entities" })
+end
+
+local entity_idx = nil
+for idx, entity in ipairs(full_customer.entities) do
+  if entity.id == id_or_internal_id or entity.internal_id == id_or_internal_id then
+    entity_idx = idx - 1
+    break
+  end
+end
+
+if entity_idx == nil then
+  return cjson.encode({ ok = false, error = "entity_not_found" })
+end
+
+local base_path = '$.entities[' .. entity_idx .. '].'
+local updated_count = 0
+
+for field, value in pairs(updates) do
+  if value == cjson.null then
+    redis.call('JSON.SET', cache_key, base_path .. field, 'null')
+  else
+    redis.call('JSON.SET', cache_key, base_path .. field, cjson.encode(value))
+  end
+  updated_count = updated_count + 1
+end
+
+return cjson.encode({ ok = true, updated_count = updated_count })