add solutions to day01

_solutions/day-01/exercise3/level3.js

@@ -103,4 +103,52 @@ const signIn = function (email, password) {
     }
   };
 
+// c. Create a function called rateProduct which rates the product
+
+const rateProduct = function (productID, userID, rating) {
+    const foundProduct = products.find((product) => product._id === productID);
+
+    if (foundProduct) {
+        foundProduct.ratings.push({userId: userID, rate: rating})
+        console.log('Rating added successfully')
+    } else console.log('Product not found')
+}
+
+
+// d. Create a function called averageRating which calculate the average rating of a product
+
+const averageRating = function (productID) {
+    const foundProduct = products.find((product) => product._id === productID);
+    ratingsArr = []
+    
+    if(foundProduct) {
+        foundProduct.ratings.forEach((rating) => {
+        ratingsArr.push(rating.rate)
+        })
+    } else {console.log("Product not found.")}
+
+    sum = ratingsArr.reduce(function (a, b) {return a + b;}, 0);
+    average = sum/ratingsArr.length
+    console.log(average)
+    return average
+}
+
+// e. Create a function called likeProduct. This function will help us to like to the product if it is not liked and remove like if it was liked.
+
+const likeProduct = function (productID, userID) {
+    const foundProduct = products.find((product) => product._id === productID);
+
+    if (foundProduct) {
+        if (foundProduct.likes.includes(userID)) {
+            const userIdIndex = foundProduct.likes.indexOf(userID);
+            foundProduct.likes.splice(userIdIndex, 1); // Remove the user ID from the 'likes' array
+            console.log("Product unliked.");
+        } else {
+            foundProduct.likes.push(userID);
+            console.log("Product liked.");
+        }
+    } else {
+        console.log("Product not found.");
+    }
+}
 

_solutions/exercise4/level1.js

@@ -0,0 +1,22 @@
+// Exercise 4 - Level 1
+
+// 1. Declare a function fullName and it takes firstName, lastName as a parameter and it returns your full - name.
+
+
+
+
+// 2. Declare a function addNumbers and it takes two two parameters and it returns sum.
+
+// 3. Area of a circle is calculated as follows: area = π x r x r. Write a function which calculates _areaOfCircle
+
+// 4. Temperature in oC can be converted to oF using this formula: oF = (oC x 9/5) + 32. Write a function which convert oC to oF convertCelciusToFahrenheit.
+
+// 5. Body mass index(BMI) is calculated as follows: bmi = weight in Kg / (height x height) in m2. Write a function which calculates bmi. BMI is used to broadly define different weight groups in adults 20 years old or older.Check if a person is underweight, normal, overweight or obese based the information given below.
+
+// The same groups apply to both men and women.
+// Underweight: BMI is less than 18.5
+// Normal weight: BMI is 18.5 to 24.9
+// Overweight: BMI is 25 to 29.9
+// Obese: BMI is 30 or more
+
+// 6. Write a function called checkSeason, it takes a month parameter and returns the season:Autumn, Winter, Spring or Summer.