public class orgHealthCheckController {

    public orgHealthCheckController() {
    }

   @AuraEnabled(cacheable=true)
    public static List<OrgHealthCheckVO> getOrgHealthCheckList() {
        List<OrgHealthCheckVO> healthCheckList = new List<OrgHealthCheckVO>();

        //add values
        Integer counter=1;
        healthCheckList.add(new OrgHealthCheckVO(getUUID()+'','Daily Async Apex Executions',getCurrentValue('DailyAsyncApexExecutions'),getLimit('DailyAsyncApexExecutions')));
        healthCheckList.add(new OrgHealthCheckVO(getUUID()+'','Data Storage (MB)',getCurrentValue('DataStorageMB'),getLimit('DataStorageMB')));
        healthCheckList.add(new OrgHealthCheckVO(getUUID()+'','File Storage (MB)',getCurrentValue('FileStorageMB'),getLimit('FileStorageMB')));
        healthCheckList.add(new OrgHealthCheckVO(getUUID()+'','Daily Api Requests',getCurrentValue('DailyApiRequests'),getLimit('DailyApiRequests')));
        healthCheckList.add(new OrgHealthCheckVO(getUUID()+'','Daily Functions Api Call Limit',getCurrentValue('DailyFunctionsApiCallLimit'),getLimit('DailyFunctionsApiCallLimit')));
        
        healthCheckList.sort();
        return healthCheckList;
    }
    
    public static String getUUID() {
        Blob b = Crypto.GenerateAESKey(128);
        String h = EncodingUtil.ConvertTohex(b);
        String guid = h.SubString(0,8).toUpperCase();//+ '-' + h.SubString(8,12) + '-' + h.SubString(12,16) + '-' + h.SubString(16,20) + '-' + h.substring(20);
        return guid;
    }

    public static Integer getLimit(String name) {
        Map<String,System.OrgLimit> limitsMap = OrgLimits.getMap();
        System.OrgLimit asyncLimit = limitsMap.get(name);
        if(asyncLimit!=null) { 
            return asyncLimit.getLimit();
        }
        else {
            return 0;
        }
    }
    public static Integer getCurrentValue(String name) {
        Map<String,System.OrgLimit> limitsMap = OrgLimits.getMap();
        System.OrgLimit asyncLimit = limitsMap.get(name);
         if(asyncLimit!=null) { 
            return asyncLimit.getValue();
        }else return 0;
    }

    public class OrgHealthCheckVO implements Comparable {
        @AuraEnabled public Double scale=0;
        @AuraEnabled public String color;
        @AuraEnabled public Double value;
        @AuraEnabled public String name;
        @AuraEnabled public String id;
        @AuraEnabled public Double maxlimit;
        
        final String OK = '#34cceb';
        final String CAUTION = '#ebd334';
        final String BAD = '#eb5934';
    
        public Integer compareTo(Object compareTo) {
            OrgHealthCheckVO ohcvo = (OrgHealthCheckVO) compareTo;
            if (this.scale == ohcvo.scale) return 0;
            if (this.scale > ohcvo.scale) return 1;
            return -1;        
        }

        OrgHealthCheckVO(String id,String name,Double value,Double maxlimit) {
            this.id=id;
            this.name=name;
            this.value=value;
            this.maxlimit=maxlimit;
            if(maxlimit>0) { 
                Decimal calc = (value/maxlimit)*100;
                this.scale = calc.setScale(2);
            }

            if(this.scale <45) {
                this.color = OK;
            }else if(this.scale >45 && this.scale<65) {
                this.color = CAUTION;
            }else {
                this.color=BAD;
            }
        }
    }
}