Using min/max for prediction

LoopFollow/Controllers/Nightscout/DeviceStatusOpenAPS.swift

@@ -12,7 +12,7 @@ import UIKit
 extension MainViewController {
     func DeviceStatusOpenAPS(formatter: ISO8601DateFormatter, lastDeviceStatus: [String: AnyObject]?, lastLoopRecord: [String: AnyObject]) {
         
-        if let lastLoopTime = formatter.date(from: (lastDeviceStatus?["created_at"] as! String))?.timeIntervalSince1970  {
+        if let lastLoopTime = formatter.date(from: (lastDeviceStatus?["created_at"] as! String))?.timeIntervalSince1970 {
             UserDefaultsRepository.alertLastLoopTime.value = lastLoopTime
             if lastLoopRecord["failureReason"] != nil {
                 LoopStatusLabel.text = "X"
@@ -20,17 +20,17 @@ extension MainViewController {
                 if UserDefaultsRepository.debugLog.value { self.writeDebugLog(value: "Loop Failure: X") }
             } else {
                 var wasEnacted = false
-                if let enacted = lastLoopRecord["enacted"] as? [String:AnyObject] {
+                if let enacted = lastLoopRecord["enacted"] as? [String: AnyObject] {
                     wasEnacted = true
                 }
                 
-                if let iobdata = lastLoopRecord["iob"] as? [String:AnyObject] {
-                    tableData[0].value = String(format:"%.2f", (iobdata["iob"] as! Double))
-                    latestIOB = String(format:"%.2f", (iobdata["iob"] as! Double))
+                if let iobdata = lastLoopRecord["iob"] as? [String: AnyObject] {
+                    tableData[0].value = String(format: "%.2f", (iobdata["iob"] as! Double))
+                    latestIOB = String(format: "%.2f", (iobdata["iob"] as! Double))
                 }
-                if let cobdata = lastLoopRecord["enacted"] as? [String:AnyObject] {
-                    tableData[1].value = String(format:"%.0f", cobdata["COB"] as! Double)
-                    latestCOB = String(format:"%.0f", cobdata["COB"] as! Double)
+                if let cobdata = lastLoopRecord["enacted"] as? [String: AnyObject] {
+                    tableData[1].value = String(format: "%.0f", cobdata["COB"] as! Double)
+                    latestCOB = String(format: "%.0f", cobdata["COB"] as! Double)
                 }
                 if let recbolusdata = lastLoopRecord["enacted"] as? [String: AnyObject],
                    let insulinReq = recbolusdata["insulinReq"] as? Double {
@@ -41,38 +41,22 @@ extension MainViewController {
                     UserDefaultsRepository.deviceRecBolus.value = 0
                 }
                 
-                if let autosensdata = lastLoopRecord["enacted"] as? [String:AnyObject] {
+                if let autosensdata = lastLoopRecord["enacted"] as? [String: AnyObject] {
                     let sens = autosensdata["sensitivityRatio"] as! Double * 100.0
-                    tableData[11].value = String(format:"%.0f", sens) + "%"
+                    tableData[11].value = String(format: "%.0f", sens) + "%"
                 }
                 
-                if let eventualdata = lastLoopRecord["enacted"] as? [String:AnyObject] {
+                if let eventualdata = lastLoopRecord["enacted"] as? [String: AnyObject] {
                     if let eventualBGValue = eventualdata["eventualBG"] as? NSNumber {
                         let eventualBGStringValue = String(describing: eventualBGValue)
                         PredictionLabel.text = bgUnits.toDisplayUnits(eventualBGStringValue)
-
-                        //This is one possible way of showing Pred. with minPredBG /eventualBG
-                        /*
-                        if let reasonString = eventualdata["reason"] as? String {
-                            let regex = try! NSRegularExpression(pattern: "minPredBG (\\d+)")
-                            if let match = regex.firstMatch(in: reasonString, range: NSRange(location: 0, length: reasonString.utf16.count)) {
-                                if let minPredBGRange = Range(match.range(at: 1), in: reasonString) {
-                                    let minPredBGString = String(reasonString[minPredBGRange])
-                                    tableData[9].value = "\(bgUnits.toDisplayUnits(String(minPredBGString)))/\(bgUnits.toDisplayUnits(eventualBGStringValue))"
-                                }
-                            } else {
-                                tableData[9].value = bgUnits.toDisplayUnits(eventualBGStringValue)
-                            }
-                        } else {
-                            tableData[9].value = bgUnits.toDisplayUnits(eventualBGStringValue)
-                        }*/
                     }
                 }
                 
                 var predictioncolor = UIColor.systemGray
                 PredictionLabel.textColor = predictioncolor
                 topPredictionBG = UserDefaultsRepository.minBGScale.value
-                if let enactdata = lastLoopRecord["enacted"] as? [String:AnyObject],
+                if let enactdata = lastLoopRecord["enacted"] as? [String: AnyObject],
                    let predbgdata = enactdata["predBGs"] as? [String: AnyObject] {
                     let predictionTypes: [(type: String, colorName: String, dataIndex: Int)] = [
                         ("ZT", "ZT", 12),
@@ -81,6 +65,9 @@ extension MainViewController {
                         ("UAM", "UAM", 15)
                     ]
                     
+                    var minPredBG = Double.infinity
+                    var maxPredBG = -Double.infinity
+                    
                     for (type, colorName, dataIndex) in predictionTypes {
                         var predictionData = [ShareGlucoseData]()
                         if let graphdata = predbgdata[type] as? [Double] {
@@ -89,7 +76,11 @@ extension MainViewController {
                             
                             for i in 0...toLoad {
                                 if i < graphdata.count {
-                                    let prediction = ShareGlucoseData(sgv: Int(round(graphdata[i])), date: predictionTime, direction: "flat")
+                                    let predictionValue = graphdata[i]
+                                    minPredBG = min(minPredBG, predictionValue)
+                                    maxPredBG = max(maxPredBG, predictionValue)
+                                    
+                                    let prediction = ShareGlucoseData(sgv: Int(round(predictionValue)), date: predictionTime, direction: "flat")
                                     predictionData.append(prediction)
                                     predictionTime += 300
                                 }
@@ -104,9 +95,15 @@ extension MainViewController {
                             color: color
                         )
                     }
+                    
+                    if minPredBG != Double.infinity && maxPredBG != -Double.infinity {
+                        tableData[9].value = "\(bgUnits.toDisplayUnits(String(minPredBG)))/\(bgUnits.toDisplayUnits(String(maxPredBG)))"
+                    } else {
+                        tableData[9].value = "N/A"
+                    }
                 }
                 
-                if let loopStatus = lastLoopRecord["recommendedTempBasal"] as? [String:AnyObject] {
+                if let loopStatus = lastLoopRecord["recommendedTempBasal"] as? [String: AnyObject] {
                     if let tempBasalTime = formatter.date(from: (loopStatus["timestamp"] as! String))?.timeIntervalSince1970 {
                         var lastBGTime = lastLoopTime
                         if bgData.count > 0 {