film done

src/movies.js

@@ -1,25 +1,78 @@
 // Iteration 1: All directors? - Get the array of all directors.
+function getAllDirectors(moviesArray) {
+    const allDirectors = moviesArray.map(eachMovies => eachMovies.director)
+    return allDirectors
+}
 // _Bonus_: It seems some of the directors had directed multiple movies so they will pop up multiple times in the array of directors.
 // How could you "clean" a bit this array and make it unified (without duplicates)?
-function getAllDirectors(moviesArray) {}
+
+function getAllDirectors(moviesArray) {
+    const newAllDirectors = getAllDirectors(moviesArray)
+    return [...new Set(newAllDirectors)]
+}
+
 
 // Iteration 2: Steven Spielberg. The best? - How many drama movies did STEVEN SPIELBERG direct?
-function howManyMovies(moviesArray) {}
+function howManyMovies(moviesArray) {
+    const stevenSpilbergMovies = moviesArray.filter(eachMovies => {
+        return eachMovies.director === 'Steven Spielberg' && eachMovies.genre.includes('Drama')
+    })
+    return stevenSpilbergMovies.length
+}
 
 // Iteration 3: All scores average - Get the average of all scores with 2 decimals
-function scoresAverage(moviesArray) {}
+function scoresAverage(moviesArray) {
+    if (movies.length === 0) {
+        return 0
+    }
+    const totalScore = moviesArray.reduce((acc, eachMovies) => {
+        return acc + eachMovies.score
+    }, 0)
+    const average = totalScore / movies.length
+
+    return Math.round(average * 100) / 100
+}
 
 // Iteration 4: Drama movies - Get the average of Drama Movies
-function dramaMoviesScore(moviesArray) {}
+function dramaMoviesScore(moviesArray) {
+    const dramaMovies = moviesArray.filter(eachMovies => {
+        return eachMovies.genre.includes('Drama')
+    })
+    if (dramaMovies.length === 0) {
+        return 0
+    }
+    const scoreDrama = moviesArray.reduce((acc, eachMovies) => {
+        return acc + eachMovies.score
+    }, 0)
+
+    return scoreDrama / dramaMovies.length
+}
 
 // Iteration 5: Ordering by year - Order by year, ascending (in growing order)
-function orderByYear(moviesArray) {}
+function orderByYear(moviesArray) {
+    const moviesCopy = moviesArray.slice()
+    const orderMovies = moviesCopy.sort((a, b) => {
+        if (a.year === b.year) {
+            return a.title.localeCompare(b.title)
+        }
+        return a.year - b.year
+    })
+    return orderMovies
+}
 
 // Iteration 6: Alphabetic Order - Order by title and print the first 20 titles
-function orderAlphabetically(moviesArray) {}
+function orderAlphabetically(moviesArray) {
+    const newMoviesCopy = moviesArray.slice()
+    const sortedTitles = newMoviesCopy.sort((a, b) => {
+        return a.title.localeCompare(b.title)
+    }).map(movie => movie.title)
+    return sortedTitles.slice(0, 20)
+}
 
 // BONUS - Iteration 7: Time Format - Turn duration of the movies from hours to minutes
-function turnHoursToMinutes(moviesArray) {}
+function turnHoursToMinutes(moviesArray) {
+
+}
 
 // BONUS - Iteration 8: Best yearly score average - Best yearly score average
-function bestYearAvg(moviesArray) {}
+function bestYearAvg(moviesArray) { }