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' Zabbix API Configuration - uses ZABBIX_URL and ZABBIX_API_TOKEN from config.asp
' NOTE: config.asp must be included by the calling page (via sql.asp) before this file

' Function to make HTTP POST request to Zabbix API with Bearer token
Function ZabbixAPICall(jsonRequest)
    On Error Resume Next
    Dim http, responseText, httpStatus
    Set http = Server.CreateObject("MSXML2.ServerXMLHTTP.6.0")

    ' Set aggressive timeouts (in milliseconds): resolve, connect, send, receive
    ' 2 seconds to resolve DNS, 3 seconds to connect, 3 seconds to send, 5 seconds to receive
    http.setTimeouts 2000, 3000, 3000, 5000

    http.Open "POST", ZABBIX_URL, False
    http.setRequestHeader "Content-Type", "application/json-rpc"
    http.setRequestHeader "Authorization", "Bearer " & ZABBIX_API_TOKEN
    http.Send jsonRequest

    If Err.Number <> 0 Then
        ZabbixAPICall = "{""error"":""HTTP Error: " & Err.Description & " (Code: " & Err.Number & ")""}"
        Err.Clear
        Exit Function
    End If

    httpStatus = http.Status
    responseText = http.responseText

    ' Check HTTP status code
    If httpStatus <> 200 Then
        ZabbixAPICall = "{""error"":""HTTP Status: " & httpStatus & " - " & responseText & """}"
    Else
        ZabbixAPICall = responseText
    End If

    Set http = Nothing
    On Error Goto 0
End Function

' Function to verify API token works (returns 1 if successful, empty string if failed)
Function ZabbixLogin()
    ' With API tokens, we just verify the token works by making a simple API call
    ' Use hostgroup.get instead of apiinfo.version (which doesn't allow auth header)
    Dim jsonRequest, response

    jsonRequest = "{" & _
        """jsonrpc"":""2.0""," & _
        """method"":""hostgroup.get""," & _
        """params"":{" & _
            """output"":[""groupid""]," & _
            """limit"":1" & _
        "}," & _
        """id"":1" & _
    "}"

    response = ZabbixAPICall(jsonRequest)

    ' Check if we got a valid response or error
    If InStr(response, """result"":[") > 0 Or InStr(response, """result"":[]") > 0 Then
        ZabbixLogin = "1"  ' Success - got valid result (even if empty array)
    ElseIf InStr(response, """error""") > 0 Then
        ZabbixLogin = "ERROR: " & response  ' Return error details
    Else
        ZabbixLogin = "UNKNOWN: " & response  ' Return response for debugging
    End If
End Function

' Function to get hostgroup ID by name
Function GetHostGroupID(groupName)
    Dim jsonRequest, response, groupID

    jsonRequest = "{" & _
        """jsonrpc"":""2.0""," & _
        """method"":""hostgroup.get""," & _
        """params"":{" & _
            """output"":[""groupid""]," & _
            """filter"":{" & _
                """name"":[""" & groupName & """]" & _
            "}" & _
        "}," & _
        """id"":2" & _
    "}"

    response = ZabbixAPICall(jsonRequest)

    ' Parse response to get groupid
    If InStr(response, """groupid"":""") > 0 Then
        groupID = Mid(response, InStr(response, """groupid"":""") + 12)
        groupID = Left(groupID, InStr(groupID, """") - 1)
        GetHostGroupID = groupID
    Else
        GetHostGroupID = ""
    End If
End Function

' Function to get all hosts in a hostgroup
Function GetHostsInGroup(groupID)
    Dim jsonRequest

    jsonRequest = "{" & _
        """jsonrpc"":""2.0""," & _
        """method"":""host.get""," & _
        """params"":{" & _
            """output"":[""hostid"",""host"",""name""]," & _
            """groupids"":[""" & groupID & """]," & _
            """selectInterfaces"":[""ip""]" & _
        "}," & _
        """id"":3" & _
    "}"

    GetHostsInGroup = ZabbixAPICall(jsonRequest)
End Function

' Function to get items (toner levels) for a specific host by IP address
Function GetPrinterTonerLevels(hostIP)
    Dim jsonRequest, response

    ' First, find the host by IP
    jsonRequest = "{" & _
        """jsonrpc"":""2.0""," & _
        """method"":""host.get""," & _
        """params"":{" & _
            """output"":[""hostid""]," & _
            """filter"":{" & _
                """host"":[""" & hostIP & """]" & _
            "}" & _
        "}," & _
        """id"":4" & _
    "}"

    response = ZabbixAPICall(jsonRequest)

    ' Check if result array is empty
    If InStr(response, """result"":[]") > 0 Then
        GetPrinterTonerLevels = "{""error"":""Host not found in Zabbix"",""ip"":""" & hostIP & """}"
        Exit Function
    End If

    ' Extract hostid from result array
    ' Look for "hostid":" and then extract the value between quotes
    Dim hostID, startPos, endPos
    startPos = InStr(response, """hostid"":""")
    If startPos > 0 Then
        ' Move past "hostid":" to get to the opening quote of the value
        startPos = startPos + 10  ' Length of "hostid":"
        ' Find the closing quote
        endPos = InStr(startPos, response, """")
        ' Extract the value
        hostID = Mid(response, startPos, endPos - startPos)
    Else
        GetPrinterTonerLevels = "{""error"":""Could not extract hostid"",""response"":""" & Left(response, 200) & """}"
        Exit Function
    End If

    ' Debug: Check hostID value
    If hostID = "" Or IsNull(hostID) Then
        GetPrinterTonerLevels = "{""error"":""HostID is empty"",""hostid"":""" & hostID & """}"
        Exit Function
    End If

    ' Now get items for this host with component:supplies AND type:level tags
    ' Build the item request using the extracted hostID
    Dim itemRequest
    itemRequest = "{" & _
        """jsonrpc"":""2.0""," & _
        """method"":""item.get""," & _
        """params"":{" & _
            """output"":[""itemid"",""name"",""lastvalue"",""lastclock"",""units"",""status"",""state""]," & _
            """hostids"":[""" & hostID & """]," & _
            """selectTags"":""extend""," & _
            """evaltype"":0," & _
            """tags"":[" & _
                "{""tag"":""component"",""value"":""supplies"",""operator"":0}," & _
                "{""tag"":""type"",""value"":""level"",""operator"":0}" & _
            "]," & _
            """sortfield"":""name""," & _
            """monitored"":true" & _
        "}," & _
        """id"":5" & _
    "}"

    ' Make the item.get call
    Dim itemResponse
    itemResponse = ZabbixAPICall(itemRequest)

    ' Return the item response
    GetPrinterTonerLevels = itemResponse
End Function

' Function to get ICMP ping status for a printer
Function GetPrinterPingStatus(hostIP)
    Dim jsonRequest, response

    ' First, find the host by IP
    jsonRequest = "{" & _
        """jsonrpc"":""2.0""," & _
        """method"":""host.get""," & _
        """params"":{" & _
            """output"":[""hostid""]," & _
            """filter"":{" & _
                """host"":[""" & hostIP & """]" & _
            "}" & _
        "}," & _
        """id"":6" & _
    "}"

    response = ZabbixAPICall(jsonRequest)

    ' Check if result array is empty
    If InStr(response, """result"":[]") > 0 Then
        GetPrinterPingStatus = "-1"  ' Host not found
        Exit Function
    End If

    ' Extract hostid from result array
    Dim hostID, hostidPos
    hostidPos = InStr(response, """hostid"":""")
    If hostidPos > 0 Then
        hostID = Mid(response, hostidPos + 10)
        ' Find the closing quote
        Dim endPos
        endPos = InStr(1, hostID, """")
        hostID = Mid(hostID, 1, endPos - 1)
    Else
        GetPrinterPingStatus = "-1"  ' Could not extract hostid
        Exit Function
    End If

    ' Get ICMP ping item
    jsonRequest = "{" & _
        """jsonrpc"":""2.0""," & _
        """method"":""item.get""," & _
        """params"":{" & _
            """output"":[""lastvalue""]," & _
            """hostids"":[""" & hostID & """]," & _
            """search"":{" & _
                """key_"":""icmpping""" & _
            "}" & _
        "}," & _
        """id"":7" & _
    "}"

    response = ZabbixAPICall(jsonRequest)

    ' Extract ping status (1 = up, 0 = down)
    Dim valuePos
    valuePos = InStr(response, """lastvalue"":""")
    If valuePos > 0 Then
        Dim pingStatus, pingStart, pingEnd
        pingStart = valuePos + 13  ' Length of "lastvalue":"
        pingEnd = InStr(pingStart, response, """")
        pingStatus = Mid(response, pingStart, pingEnd - pingStart)
        GetPrinterPingStatus = pingStatus
    Else
        GetPrinterPingStatus = "-1"  ' Item not found
    End If
End Function

' Simple JSON parser for toner data (extracts color and level from tags)
Function ParseTonerData(jsonResponse)
    Dim tonerArray()
    Dim resultStart, itemStart, itemEnd
    Dim validItems, i, searchPos

    ' Check if we have a valid result
    resultStart = InStr(jsonResponse, """result"":[")
    If resultStart = 0 Then
        ParseTonerData = tonerArray
        Exit Function
    End If

    ' First pass: count valid toner items (exclude drums and unsupported)
    validItems = 0
    searchPos = resultStart
    Do While True
        itemStart = InStr(searchPos, jsonResponse, """name"":""")
        If itemStart = 0 Then Exit Do

        ' Check if this is a toner (not drum) and status is not unsupported
        Dim itemBlock
        itemEnd = InStr(itemStart, jsonResponse, "},")
        If itemEnd = 0 Then itemEnd = InStr(itemStart, jsonResponse, "}]")
        If itemEnd = 0 Then Exit Do

        itemBlock = Mid(jsonResponse, itemStart, itemEnd - itemStart)

        ' Only count if status is active (0) and NOT a drum
        If InStr(itemBlock, """status"":""0""") > 0 And InStr(LCase(itemBlock), "drum") = 0 Then
            validItems = validItems + 1
        End If

        searchPos = itemEnd + 1
        If searchPos > Len(jsonResponse) Then Exit Do
    Loop

    If validItems = 0 Then
        ParseTonerData = tonerArray
        Exit Function
    End If

    ReDim tonerArray(validItems - 1, 2)  ' name, value, color

    ' Second pass: extract toner data
    i = 0
    searchPos = resultStart
    Do While i < validItems
        itemStart = InStr(searchPos, jsonResponse, """name"":""")
        If itemStart = 0 Then Exit Do

        itemEnd = InStr(itemStart, jsonResponse, "},")
        If itemEnd = 0 Then itemEnd = InStr(itemStart, jsonResponse, "}]")
        If itemEnd = 0 Then Exit Do

        itemBlock = Mid(jsonResponse, itemStart, itemEnd - itemStart)

        ' Only process items with active status (exclude drums)
        If InStr(itemBlock, """status"":""0""") > 0 And InStr(LCase(itemBlock), "drum") = 0 Then
            Dim itemName, itemValue, itemColor
            Dim nameStart, nameEnd, valueStart, valueEnd, colorStart, colorEnd

            ' Extract name (find position after "name":")
            nameStart = InStr(itemBlock, """name"":""")
            If nameStart > 0 Then
                nameStart = nameStart + 8  ' Length of "name":"
                nameEnd = InStr(nameStart, itemBlock, """")
                itemName = Mid(itemBlock, nameStart, nameEnd - nameStart)
            Else
                itemName = ""
            End If

            ' Extract lastvalue (find position after "lastvalue":")
            valueStart = InStr(itemBlock, """lastvalue"":""")
            If valueStart > 0 Then
                valueStart = valueStart + 13  ' Length of "lastvalue":"
                valueEnd = InStr(valueStart, itemBlock, """")
                itemValue = Mid(itemBlock, valueStart, valueEnd - valueStart)
            Else
                itemValue = "0"
            End If

            ' Extract color from tags array
            itemColor = ""
            colorStart = InStr(itemBlock, """tag"":""color"",""value"":""")
            If colorStart > 0 Then
                colorStart = colorStart + 26
                colorEnd = InStr(colorStart, itemBlock, """")
                itemColor = Mid(itemBlock, colorStart, colorEnd - colorStart)
            End If

            ' Normalize color tag (handle variations like matte_black, photo_black)
            If itemColor <> "" Then
                If InStr(itemColor, "black") > 0 Then itemColor = "black"
                If itemColor = "gray" Or itemColor = "grey" Then itemColor = "gray"
            End If

            ' If no color tag, try to determine from name
            If itemColor = "" Then
                Dim lowerName
                lowerName = LCase(itemName)
                If InStr(lowerName, "cyan") > 0 Then itemColor = "cyan"
                If InStr(lowerName, "magenta") > 0 Then itemColor = "magenta"
                If InStr(lowerName, "yellow") > 0 Then itemColor = "yellow"
                If InStr(lowerName, "black") > 0 Then itemColor = "black"
                If InStr(lowerName, "gray") > 0 Or InStr(lowerName, "grey") > 0 Then itemColor = "gray"
            End If

            tonerArray(i, 0) = itemName
            tonerArray(i, 1) = itemValue
            tonerArray(i, 2) = itemColor

            i = i + 1
        End If

        searchPos = itemEnd + 1
        If searchPos > Len(jsonResponse) Then Exit Do
    Loop

    ParseTonerData = tonerArray
End Function
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