How would you improve this lead life cycle scheduled function?

How would you improve this lead life cycle scheduled function?

void schedule.IntegratedLeadProcessing()
{
    // STEP 1: Retrieve Leads from CRM
    leads = zoho.crm.getRecords("Leads",1,200);
    if(leads == null || leads.size() == 0)
    {
        return;
    }

    // STEP 2: Process Timeline Engagement & Update Lead Status
    currentDate = zoho.currentdate.toDate();
    thirtyDaysAgo = currentDate.addDay(-30);

    leadIds = list();
    for each  lead in leads
    {
        if(lead.get("id") != null)
        {
            leadIds.add(lead.get("id"));
        }
    }

    timelineMap = Map();
    for each  leadId in leadIds
    {
        timelineURL = "https://www.zohoapis.com/crm/v7/Leads/" + leadId + "/__timeline?sort_by=audited_time" + "&include_inner_details=field_history.data_type,field_history.field_label,field_history.enable_colour_code,field_history.pick_list_values,done_by.type__s,done_by.profile";
        timelineResponse = invokeurl
        [
            url :timelineURL
            type :GET
            connection:"zoho_crm"
        ];
        timelineList = list();
        if(timelineResponse.containsKey("__timeline"))
        {
            timelineList = timelineResponse.get("__timeline");
        }
        timelineMap.put(leadId,timelineList);
    }

    leadEngagementMap = Map();
    desiredModules = list();
    desiredModules.add("calls");
    desiredModules.add("meetings");
    desiredModules.add("emails");
    desiredModules.add("tasks");

    for each  lead in leads
    {
        leadId = lead.get("id");
        leadName = ifnull(lead.get("Lead_Name"),ifnull(lead.get("Full_Name"),"Unknown Lead"));
        createdTimeStr = lead.get("Created_Time");
        if(createdTimeStr != null)
        {
            createdDate = createdTimeStr.toDate("yyyy-MM-dd'T'HH:mm:ssXXX");
        }
        else
        {
            createdDate = currentDate;
        }
        lastEngagementDate = null;
        engagementDates = list();

        leadTimeline = timelineMap.get(leadId);
        for each  event in leadTimeline
        {
            if(event.containsKey("audited_time") && event.containsKey("record"))
            {
                rec = event.get("record");
                moduleName = "";
                if(rec.containsKey("link_data"))
                {
                    linkData = rec.get("link_data");
                    if(linkData != null && linkData.size() > 0)
                    {
                        moduleName = linkData.get(0);
                    }
                }
                if(moduleName == "" && rec.containsKey("module") && rec.get("module").containsKey("api_name"))
                {
                    moduleName = rec.get("module").get("api_name");
                }
                if(moduleName == "" && event.containsKey("description"))
                {
                    description = event.get("description").toLowerCase();
                    if(description.contains("task"))
                    {
                        moduleName = "tasks";
                    }
                    else if(description.contains("call"))
                    {
                        moduleName = "calls";
                    }
                    else if(description.contains("meeting"))
                    {
                        moduleName = "meetings";
                    }
                    else if(description.contains("email"))
                    {
                        moduleName = "emails";
                    }
                }
                moduleNameLower = moduleName.toLowerCase();

                if(desiredModules.contains(moduleNameLower))
                {
                    try 
                    {
                        eventTimeStr = event.get("audited_time");
                        eventDate = eventTimeStr.toDate("yyyy-MM-dd'T'HH:mm:ssXXX");
                        engagementDates.add(eventDate);
                    }
                    catch (e)
                    {
                    }
                }
            }
        }

        if(engagementDates.size() > 0)
        {
            mostRecentEvent = engagementDates.get(0);
            for each  dt in engagementDates
            {
                if(dt.toLong() > mostRecentEvent.toLong())
                {
                    mostRecentEvent = dt;
                }
            }
            lastEngagementDate = mostRecentEvent;
        }
        else
        {
            lastEngagementDate = createdDate;
        }

        daysSinceEngagement = (currentDate.toLong() - lastEngagementDate.toLong()) / 86400000;
        if(engagementDates.size() > 0)
        {
            if(daysSinceEngagement <= 7)
            {
                leadStatus = "Hot";
            }
            else if(daysSinceEngagement <= 14)
            {
                leadStatus = "Warm";
            }
            else
            {
                leadStatus = "Cold";
            }
        }
        else
        {
            leadStatus = "Cold";
        }
        updateData = Map();
        updateData.put("Last_Engagement_Date",lastEngagementDate.toString("yyyy-MM-dd"));
        updateData.put("Lead_Status",leadStatus);
        leadEngagementMap.put(leadId,updateData);
    }

    for each  leadId in leadEngagementMap.keys()
    {
        updateData = leadEngagementMap.get(leadId);
        updateResp = zoho.crm.updateRecord("Leads",leadId,updateData);
    }

    // STEP 3: Apply Score Decay Adjustments
    scoringRules = list();
    scoringRules.add("Industry_Fit");
    scoringRules.add("Company_Size");
    scoringRules.add("Location_Priority");
    scoringRules.add("Intent");
    scoringRules.add("Buying_Group_Role");
    baseScores = Map();
    baseScores.put("Industry_Fit",0);
    baseScores.put("Company_Size",15);
    baseScores.put("Location_Priority",10);
    baseScores.put("Intent",0);
    baseScores.put("Buying_Group_Role",0);

    processedCount = 0;
    updatedCount = 0;
    for each  lead in leads
    {
        processedCount = processedCount + 1;
        leadId = lead.get("id");
        positiveTP = ifnull(lead.get("Positive_Touch_Points"),0).toLong();
        negativeTP = ifnull(lead.get("Negative_Touch_Points"),0).toLong();
        engaged = positiveTP > 0 && positiveTP > negativeTP;
        refDate = lead.get("Last_Engagement_Date");
        if(refDate != null)
        {
            refDate = refDate.toDate();
        }
        else
        {
            refDate = lead.get("Created_Time");
            if(refDate != null)
            {
                refDate = refDate.toDate();
            }
        }
        updateData = Map();
        if(engaged)
        {
            updateData.put("Score_Decay_Counter",0);
            updateData.put("Score_Decay_Reason","");
            for each  rule in scoringRules
            {
                currentScore = 0;
                try 
                {
                    currentScore = ifnull(lead.get(rule),"0").toDecimal();
                }
                catch (e)
                {
                    currentScore = 0;
                }
                baseScore = baseScores.get(rule).toDecimal();
                if(currentScore < baseScore)
                {
                    updateData.put(rule,baseScore);
                }
            }
        }
        else if(refDate != null)
        {
            daysInactive = (currentDate.toLong() - refDate.toLong()) / 86400000;
            if(daysInactive >= 14)
            {
                decayCounter = (daysInactive / 14).toLong();
                for each  rule in scoringRules
                {
                    currentScore = 0;
                    try 
                    {
                        currentScore = ifnull(lead.get(rule),"0").toDecimal();
                    }
                    catch (e)
                    {
                        currentScore = 0;
                    }
                    if(currentScore > 0)
                    {
                        updateData.put(rule,currentScore * 0.95);
                    }
                }
                updateData.put("Score_Decay_Counter",decayCounter);
                updateData.put("Score_Decay_Reason","Score reduced due to lack of engagement (" + daysInactive.toLong() + " days since last engagement)");
            }
        }
        if(updateData.size() > 0)
        {
            updateResponse = zoho.crm.updateRecord("Leads",leadId,updateData);
            updatedCount = updatedCount + 1;
        }
    }

    // STEP 4: Process Tagging for Leads
    getTagsResp = invokeurl
    [
        url :settingsUrl
        type :GET
        connection:"zoho_crm"
    ];
    existingTagsList = list();
    if(getTagsResp.containsKey("tags"))
    {
        existingTagsList = getTagsResp.get("tags");
    }

    plannedTags = list();
    plannedTags.add({"name":"Introduction","color_code":"#F17574"});
    plannedTags.add({"name":"Rapport Building","color_code":"#F48435"});
    plannedTags.add({"name":"Existing Business","color_code":"#E7A826"});
    plannedTags.add({"name":"Closing","color_code":"#A8C026"});
    plannedTags.add({"name":"0-5m/yr","color_code":"#63C57E"});
    plannedTags.add({"name":"5-50m/yr","color_code":"#1DB9B4"});
    plannedTags.add({"name":"50m-100m/yr","color_code":"#57B1FD"});
    plannedTags.add({"name":"100m+/yr","color_code":"#879BFC"});
    plannedTags.add({"name":"0-20 Users","color_code":"#D297EE"});
    plannedTags.add({"name":"20-60 Users","color_code":"#FD87BD"});
    plannedTags.add({"name":"60+ Users","color_code":"#969696"});
    plannedTags.add({"name":"Wichita (Local)","color_code":"#658BA8"});
    plannedTags.add({"name":"Mid West (Regional)","color_code":"#B88562"});
    plannedTags.add({"name":"National","color_code":"#F17574"});
    plannedTags.add({"name":"Data Incomplete","color_code":"#ECE81A"});

    for each  tagMap in plannedTags
    {
        plannedTagName = tagMap.get("name");
        tagExists = false;
        for each  existTag in existingTagsList
        {
            if(existTag.get("name") == plannedTagName)
            {
                tagExists = true;
                break;
            }
        }
        if(!tagExists)
        {
            inputJSON = {"tags":{{"name":plannedTagName,"color_code":tagMap.get("color_code")}}};
            createResp = invokeurl
            [
                url :createUrl
                type :POST
                parameters:inputJSON.toString()
                connection:"zoho_crm"
            ];
        }
    }

    updated_leads = 0;
    for each  lead in leads
    {
        leadId = lead.get("id");
        newTagsList = list();
        leadDetails = zoho.crm.getRecordById("Leads",leadId);
        existingTags = ifnull(leadDetails.get("Tag"),list());
        if(existingTags.size() > 0)
        {
            removeParam = Map();
            removeParam.put("ids",list(leadId));
            removeParam.put("tags",existingTags);
            removeResp = invokeurl
            [
                url :removeTagsUrl
                type :POST
                parameters:removeParam.toString()
                connection:"zoho_crm"
            ];
        }

        newTagsList.add("Data Incomplete");
        if(newTagsList.size() > 0)
        {
            param = Map();
            formattedTags = list();
            for each  tagName in newTagsList
            {
                formattedTags.add({"name":tagName});
            }
            param.put("tags",formattedTags);
            param.put("ids",list(leadId));
            tagResp = invokeurl
            [
                url :addTagsUrl
                type :POST
                parameters:param.toString()
                connection:"zoho_crm"
            ];
            updated_leads = updated_leads + 1;
        }
    }

    // STEP 5: Lead Routing & Conversion
    salesAgents = list();
    salesAgents.add({"id":"owner_id","name":"owner_name"});
    totalAgents = salesAgents.size();
    currentAgentIndex = 0;
    agentLeadCount = Map();
    for each  agent in salesAgents
    {
        agentLeadCount.put(agent.get("id"),{"name":agent.get("name"),"count":0});
    }

    allLeads = zoho.crm.getRecords("Leads",1,200);
    if(allLeads == null || allLeads.isEmpty())
    {
        return;
    }

    for each  lead in allLeads
    {
        leadOwner = lead.get("Owner");
        if(leadOwner != null)
        {
            ownerId = leadOwner.get("id");
            ownerName = leadOwner.get("name");
            if(agentLeadCount.containsKey(ownerId))
            {
                agentLeadCount.put(ownerId,{"name":ownerName,"count":agentLeadCount.get(ownerId).get("count") + 1});
            }
            else
            {
                agentLeadCount.put(ownerId,{"name":ownerName,"count":1});
            }
        }
    }

    assignedLeads = 0;
    for each  lead in allLeads
    {
        if(lead.get("Owner") == null)
        {
            assignedAgent = salesAgents.get(currentAgentIndex % totalAgents);
            updateData = Map();
            updateData.put("Owner",assignedAgent.get("id"));
            updateResp = zoho.crm.updateRecord("Leads",lead.get("id"),updateData);
            assignedLeads = assignedLeads + 1;
            if(agentLeadCount.containsKey(assignedAgent.get("id")))
            {
                agentLeadCount.put(assignedAgent.get("id"),{"name":assignedAgent.get("name"),"count":agentLeadCount.get(assignedAgent.get("id")).get("count") + 1});
            }
            else
            {
                agentLeadCount.put(assignedAgent.get("id"),{"name":assignedAgent.get("name"),"count":1});
            }
            currentAgentIndex = (currentAgentIndex + 1) % totalAgents;
        }
    }

    convertedLeads = 0;
    currentDate = zoho.currentdate.toDate();
    sevenDaysAgo = currentDate.addDay(-7);
    for each  lead in allLeads
    {
        leadId = lead.get("id");
        timeline = zoho.crm.getRelatedRecords("Activities","Leads",leadId);
        if(timeline.isEmpty())
        {
            continue;
        }
        activityFound = false;
        lastValidActivity = null;
        for each  activity in timeline
        {
            activityType = activity.get("Activity_Type");
            activityStatus = activity.get("Status");
            activityTime = activity.get("Created_Time").toDate();
            if((activityType == "Call" || activityType == "Meeting") && activityTime >= sevenDaysAgo)
            {
                lastValidActivity = activity;
                if(activityStatus == "Completed")
                {
                    activityFound = true;
                    break;
                }
            }
        }
        if(activityFound)
        {
            conversionMap = Map();
            dealList = list();
            dealList.add("Deals");
            dealList.add("Accounts");
            conversionMap.put("create",dealList);
            convertResp = zoho.crm.convertLead(leadId,conversionMap);
            convertedLeads = convertedLeads + 1;
            assignedAgent = salesAgents.get(currentAgentIndex % totalAgents);
            dealData = Map();
            dealData.put("Owner",assignedAgent.get("id"));
            dealUpdateResp = zoho.crm.updateRecord("Deals",convertResp.get("Deals"),dealData);
            currentAgentIndex = (currentAgentIndex + 1) % totalAgents;
        }
    }
}

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