Allow deletion of measurements

TempTrack/Extensions/Data+Extensions.swift

@@ -6,6 +6,13 @@ enum DeviceInfoError: Error {
 
 extension Data {
     
+    mutating func getByte() throws -> UInt8 {
+        guard count >= 1 else {
+            throw DeviceInfoError.missingData
+        }
+        return removeFirst()
+    }
+    
     mutating func decodeUInt16() throws -> UInt16 {
         guard count >= 2 else {
             throw DeviceInfoError.missingData
@@ -29,15 +36,4 @@ extension Data {
         let byte3 = removeFirst()
         return (Int(byte3) << 24) | (Int(byte2) << 16) | (Int(byte1) << 8) | Int(byte0)
     }
-    
-    mutating func decodeSensor() throws -> TemperatureSensor? {
-        guard count >= 11 else {
-            throw DeviceInfoError.missingData
-        }
-        let address = Array(self[startIndex..<startIndex+8])
-        removeFirst(8)
-        let temperatureByte = removeFirst()
-        let time = try decodeUInt16()
-        return .init(address: address, valueByte: temperatureByte, secondsAgo: time)
-    }
 }

TempTrack/Extensions/Date+Extensions.swift

@@ -14,6 +14,32 @@ extension Date {
         self.init(timeIntervalSince1970: TimeInterval(seconds))
     }
     
+    var shortTimePassedText: String {
+        let secs = secondsToNow
+        guard secs > 1 else {
+            return "Now"
+        }
+        guard secs >= 60 else {
+            return "\(secs) s ago"
+        }
+        let minutes = secs / 60
+        guard minutes >= 60 else {
+            return "\(minutes) min ago"
+        }
+        let hours = minutes / 60
+        guard hours > 1 else {
+            return "1 hour ago"
+        }
+        guard hours >= 60 else {
+            return "\(hours) hours ago"
+        }
+        let days = hours / 24
+        guard days > 1 else {
+            return "1 day ago"
+        }
+        return "\(days) days ago"
+    }
+    
     var timePassedText: String {
         let secs = secondsToNow
         guard secs > 1 else {