feat: #26 - Python

Author: legion-commander

Roadmap/26 - SOLID SRP/python/qwik-zgheib.py

@@ -0,0 +1,159 @@
+# -- exercise
+# incorrect
+class HeroI:
+    def __init__(self, name, primary_attribute, base_damage, health):
+        self.name = name;
+        self.primary_attribute = primary_attribute;
+        self.base_damage = base_damage;
+        self.health = health;
+
+    def calculate_damage(self, additional_damage):
+        return self.base_damage + additional_damage;
+
+    def display_info(self):
+        info = f"Hero: {self.name}\n";
+        info += f"Primary Attribute: {self.primary_attribute}\n";
+        info += f"Base Damage: {self.base_damage}\n";
+        info += f"Health: {self.health}";
+        return info;
+
+hero = HeroI("Axe", "Strength", 50, 1000);
+print(hero.display_info());
+print(f"Damage: {hero.calculate_damage(20)}");
+
+# correct
+class HeroC:
+    def __init__(self, name, primary_attribute, base_damage, health):
+        self.name = name;
+        self.primary_attribute = primary_attribute;
+        self.base_damage = base_damage;
+        self.health = health;
+
+class DamageCalculator:
+    def calculate_damage(self, hero, additional_damage):
+        return hero.base_damage + additional_damage;
+
+class HeroDisplay:
+    def display_info(self, hero):
+        info = f"Hero: {hero.name}\n"
+        info += f"Primary Attribute: {hero.primary_attribute}\n";
+        info += f"Base Damage: {hero.base_damage}\n";
+        info += f"Health: {hero.health}";
+        return info;
+
+print("------------------------------------------------")
+hero = HeroC("Axe", "Strength", 50, 1000);
+damage_calculator = DamageCalculator();
+hero_display = HeroDisplay();
+
+print(hero_display.display_info(hero))
+print(f"Damage: {damage_calculator.calculate_damage(hero, 20)}");
+
+# -- extra challenge
+# incorrect
+class Library:
+    def __init__(self):
+        self.books = [];
+        self.users = [];
+        self.loans = [];
+
+    def add_book(self, title, author, copies):
+        book = {"title": title, "author": author, "copies": copies};
+        self.books.append(book);
+
+    def add_user(self, name, user_id, email):
+        user = {"name": name, "user_id": user_id, "email": email};
+        self.users.append(user);
+
+    def loan_book(self, user_id, book_title):
+        for book in self.books:
+            if book["title"] == book_title and book["copies"] > 0:
+                self.loans.append({"user_id": user_id, "book_title": book_title});
+                book["copies"] -= 1;
+                return True;
+        return False;
+
+    def return_book(self, user_id, book_title):
+        for loan in self.loans:
+            if loan["user_id"] == user_id and loan["book_title"] == book_title:
+                self.loans.remove(loan);
+                for book in self.books:
+                    if book["title"] == book_title:
+                        book["copies"] += 1;
+                        return True;
+        return False;
+
+library = Library()
+library.add_book("1996", "Ahmed Khedr", 4);
+library.add_user("Legion Commander", 1, "legioncommander@gmail.com");
+library.loan_book(1, "1996");
+library.return_book(1, "1996");
+
+
+# correct
+class BookManager:
+    def __init__(self):
+        self.books = [];
+
+    def add_book(self, title, author, copies):
+        book = {"title": title, "author": author, "copies": copies};
+        self.books.append(book);
+
+    def update_copies(self, book_title, copies):
+        for book in self.books:
+            if book["title"] == book_title:
+                book["copies"] += copies;
+                return True;
+        return False;
+
+    def get_book(self, book_title):
+        for book in self.books:
+            if book["title"] == book_title:
+                return book;
+        return None;
+
+class UserManager:
+    def __init__(self):
+        self.users = [];
+
+    def add_user(self, name, user_id, email):
+        user = {"name": name, "user_id": user_id, "email": email};
+        self.users.append(user);
+
+    def get_user(self, user_id):
+        for user in self.users:
+            if user["user_id"] == user_id:
+                return user;
+        return None;
+
+class LoanManager:
+    def __init__(self, book_manager):
+        self.loans = [];
+        self.book_manager = book_manager;
+
+    def loan_book(self, user_id, book_title):
+        book = self.book_manager.get_book(book_title);
+        if book and book["copies"] > 0:
+            self.loans.append({"user_id": user_id, "book_title": book_title});
+            self.book_manager.update_copies(book_title, -1);
+            return True;
+        return False;
+
+    def return_book(self, user_id, book_title):
+        for loan in self.loans:
+            if loan["user_id"] == user_id and loan["book_title"] == book_title:
+                self.loans.remove(loan);
+                self.book_manager.update_copies(book_title, 1);
+                return True;
+        return False;
+
+# Uso correcto
+book_manager = BookManager();
+user_manager = UserManager();
+loan_manager = LoanManager(book_manager);
+
+book_manager.add_book("1996", "Ahmed Khedr", 4);
+user_manager.add_user("Legion Commander", 1, "legioncommander@gmail.com");
+loan_manager.loan_book(1, "1996");
+loan_manager.return_book(1, "1996");
+