SEI - 24 Hilman - updated js

script.js

@@ -1,7 +1,144 @@
 console.log("hello script js");
 
+// get temperature - in fahrenheit
+
+// convert input (fahrenheit) to celsius
+
+// output fahrenheit and celsius
+
+// input (fahrenheit) --> output (celsius) and output (fahrenheit)
+
+// var output = convertToCelsius( 15 ) // will equal to ...
+
+var defaultPrompt = 'Enter temperature';
+document.querySelector('#output').innerText = defaultPrompt;
+
+var defaultState = {
+    inputTemperature : 0,
+    inputUnit : '',
+    state : 0,
+}
+/*
+
+Prompt for temperature
+
+Prompt for temperatureUnit -> Fahrenheit/Celsius/Kelvin
+
+Keep temperature and temperatureUnit as global variable
+
+Convert temperature to the other two units
+
+Output sample -> 32˚F = 0˚C = 273.15K
+
+*/
+
+var inputTemperature = 0;
+var inputUnit = '';
+var state = 0;
+var username = '';
+
+// cycle thru steps
+// get temp
+// get unit
+// invoke conversion
+// return values in a string
+var promptUser = function(input){
+    switch (state) {
+        case 0:
+            state++;
+            inputTemperature = input;
+            return 'Enter unit of measure'
+            break;
+        case 1:
+            state++;
+            inputUnit = input;
+            return 'Enter your name';
+            break;
+        case 2:
+            state++;
+            var username = input;
+            var converted = convertInput(inputUnit);
+            var suggestion = temperatureCheck(inputTemperature);
+            return `${converted}\n${username} ${suggestion}.\nEnter any key to start again.`;
+            break;
+        case 3:
+            state = defaultState.state;
+            inputTemperature = defaultState.inputTemperature;
+            inputUnit = defaultState.inputUnit;
+            return defaultPrompt;
+            break;
+    }
+}
+
+var convertCelsiusToKelvin = function(temperature){
+    var kelvin = temperature + 273.15;
+    return kelvin;
+}
+
+var convertFahrenheitToCelsius = function(temperature){
+    var celsius = (temperature - 32) * (5 / 9)
+    return celsius;
+}
+
+var convertCelsiusToFahrenheit = function(temperature){
+    var fahrenheit = temperature * 1.8 + 32;
+    return fahrenheit;
+}
+
+var convertKelvinToCelsius = function(temperature){
+    var celsius = temperature - 273.15;
+    return celsius;
+}
+
+var convertInput = function(input){
+    input = input.toLowerCase();
+    switch(input) {
+        case 'fahrenheit':
+            var celsius = convertFahrenheitToCelsius(inputTemperature);
+            var kelvin = convertCelsiusToKelvin(celsius);
+            return `${inputTemperature}\xB0F = ${celsius}\xB0C = ${kelvin}K`;
+            break;
+        case 'celsius':
+            var kelvin =  convertCelsiusToKelvin(inputTemperature);
+            var fahrenheit = convertCelsiusToFahrenheit(inputTemperature);
+            return `${inputTemperature}\xB0C = ${fahrenheit}\xB0F = ${kelvin}K`;
+            break;
+        case 'kelvin':
+            var celsius = convertKelvinToCelsius(inputTemperature);
+            var fahrenheit = convertCelsiusToFahrenheit(celsius);
+            return `${inputTemperature}K = ${celsius}\xB0C = ${fahrenheit}\xB0F`;
+            break;
+    }
+}
+
+
+// gives clothing suggestions with regards to temperature in Celsius
+var temperatureCheck = function(input){
+    if (input > 100) {
+        return 'don\'t go outside if you want to live';
+    } else if (input > 40) {
+        return 'should wear nothing';
+    } else if (input > 30) {
+        return 'should wear a swimsuit';
+    } else if (input > 20) {
+        return 'should wear shorts and a shirt';
+    } else if (input > 15) {
+        return 'should wear a sweater';
+    } else if (input > 10) {
+        return 'should wear sweater \+ jacket';
+    } else if (input > 5) {
+        return 'should wear a heavy jacket';
+    } else if (input > 2) {
+        return 'should wear a heavy jacket and toe warmers';
+    } else {
+        return 'don\'t go outside if you want to live';
+    }
+}
+
+// use input to prompt user and reset input value
 var inputHappened = function(currentInput){
   console.log( currentInput );
-  var output = "WOW TEMPERATURE";
+  var output = promptUser(currentInput);
+  document.querySelector('input').value = '';
   return output;
-};
+};