Lab done

src/movies.js

@@ -2,14 +2,135 @@
 
 // Iteration 1: Ordering by year - Order by year, ascending (in growing order)
 
+function orderByYear(peliculas){
+
+    let copiaPeliculas = JSON.parse(JSON.stringify(peliculas));
+
+       return copiaPeliculas.sort((a,b) => {
+        if (a.year === b.year){
+            return a.title.localeCompare(b.title)
+        }
+        else {
+            return a.year - b.year
+        }
+    })
+  };
+
+
 // Iteration 2: Steven Spielberg. The best? - How many drama movies did STEVEN SPIELBERG direct
 
+function howManyMovies(arr) {
+    if(arr.length === 0)
+    return 0;
+
+    let dramaMovie = true;
+
+    let peliculasFiltradas = arr.filter(function(peliculas){
+        return peliculas.director === "Steven Spielberg" && peliculas.genre.includes("Drama") === dramaMovie;
+    });
+return peliculasFiltradas.length;
+}
+
 // Iteration 3: Alphabetic Order - Order by title and print the first 20 titles
 
+/*function orderAlphabetically (arrDePeliculas){
+    let copiaAlfabeticas = JSON.parse(JSON.stringify(arrDePeliculas));
+        return copiaAlfabeticas.sort((a,b) => {
+            a.title - b.title
+        })
+}; */
+
+function orderAlphabetically(arrDePeliculas){
+    let orderedArray = arrDePeliculas.map(arrDePeliculas=>arrDePeliculas.title);
+    return orderedArray.sort().filter((arrDePeliculas,idx)=>idx<20);
+}
+
 // Iteration 4: All rates average - Get the average of all rates with 2 decimals
 
+function ratesAverage (arr){
+    if (arr.length === 0) {
+          return 0;
+      }
+    let moviesRatesuma = arr.reduce(function(a,b){
+        if(b.rate) {
+            return a + b.rate
+           }
+           return a  
+      let sum = a + b.rate
+      return sum
+    },0)
+    let promedio = moviesRatesuma / arr.length
+    return parseFloat(promedio.toFixed(2));
+  };
+
+
 // Iteration 5: Drama movies - Get the average of Drama Movies
 
+function dramaMoviesRate(peliculasDrama){
+       let dramaFiltro = peliculasDrama.filter(function(element){
+           return element.genre.includes("Drama")
+       })
+
+       return ratesAverage(dramaFiltro)
+};
+
 // Iteration 6: Time Format - Turn duration of the movies from hours to minutes
 
+function turnHoursToMinutes(movieArr) {
+    // create a copy using JSON
+    let copyMovies = JSON.parse(JSON.stringify(movieArr));
+    // create a minutes array with conversion h-min format to min
+    /*copyMovies.forEach(function(movie){
+      let newVar = movie.duration*60+movie.duration;
+      movie.duration = newVar;
+    })*/
+    copyMovies.forEach(function(movie){
+      let hourIndex = movie.duration.indexOf("h");
+      let minIndex = movie.duration.indexOf("min");
+      let minutesHour = 0;
+      if (hourIndex === -1) {
+        minutesHour = 0;
+      } else {
+        minutesHour = parseInt(movie.duration[hourIndex-1])*60;
+      }
+      let minutes = 0;
+      if (minIndex === -1) {
+        minutes = 0;
+      } else {
+        minutes = parseInt(movie.duration[minIndex-2] + movie.duration[minIndex-1]);
+      }
+      movie.duration = minutesHour + minutes;
+    })
+
+    /*let minutesArray = movieArr.map(function(movie) {
+        let hourIndex = movie.duration.indexOf("h");
+        let minIndex = movie.duration.indexOf("min");
+        let minutesHour = 0;
+        if (hourIndex === -1) {
+          minutesHour = 0;
+        } else {
+          minutesHour = parseInt(movie.duration[hourIndex-1])*60;
+        }
+        let minutes = 0;
+        if (minIndex === -1) {
+          minutes = 0;
+        } else {
+          minutes = parseInt(movie.duration[minIndex-2] + movie.duration[minIndex-1]);
+        }
+        return minutesHour + minutes;
+    });
+    // change the duration format to a new min format
+    for (let i=0; i<copyMovies.length; i++) {
+        copyMovies[i].duration = minutesArray[i];
+    }*/
+    return copyMovies;
+}
+
 // BONUS Iteration: Best yearly rate average - Best yearly rate average
+
+function bestYearAvg(movieYear){
+    if(movieYear.length === 0 ){
+        return null;
+    } 
+
+};