Tech Tools section with a code generator, toner report that names the part, toner forecasting, warranty proof of cover, application uploads

plugins/printers/services/zabbix_service.py

@@ -19,6 +19,7 @@ Configuration (database Setting overrides env var):
 """
 
 import logging
+import time
 from typing import Dict, List, Optional
 
 import requests
@@ -219,6 +220,39 @@ class ZabbixService:
             })
         return supplies
 
+    def gethistory(self, itemids, days=90, limit=5000):
+        """Raw level history for supply items: {itemid: [(clock, value), ...]}.
+
+        Zabbix keeps this already - we simply never asked for it. history=3 is
+        the unsigned-integer table, which is where a percent-remaining item
+        lands; a site that types the item as float would need history=0, so a
+        miss falls back rather than erroring.
+
+        Returns {} when Zabbix is off or unreachable, so callers degrade to
+        "no estimate" instead of failing.
+        """
+        if not itemids:
+            return {}
+        timefrom = int(time.time()) - days * 86400
+        collected = {}
+        for historytype in (3, 0):
+            rows = self._apicall("history.get", {
+                "output": "extend",
+                "history": historytype,
+                "itemids": list(itemids),
+                "time_from": timefrom,
+                "sortfield": "clock",
+                "sortorder": "ASC",
+                "limit": limit,
+            }) or []
+            for row in rows:
+                collected.setdefault(str(row.get("itemid")), []).append(
+                    (row.get("clock"), row.get("value")))
+            # Items live in one table or the other; stop once something answered.
+            if collected:
+                break
+        return collected
+
     def getpingstatus(self, ip: str) -> str:
         """ICMP ping state for a printer: '1' up, '0' down, '-1' unknown."""
         hostid = self.gethostidbyip(ip)