Welcome to the second unit of our course, where we will focus on building the Story Manager for our short story generation service. In the previous lesson, we laid the foundation by creating a structured base prompt using a prompt management system. Now, we will take the next step by developing a system to manage and store the stories generated by our service. The Story Manager will allow us to save, retrieve, and organize stories, making it a crucial component of our application.

Before we dive into building the Story Manager, let's briefly recall some fundamental concepts that will be useful. A class can be thought of as a blueprint for creating objects, allowing us to group related data and functionality together. A collection is a way to store multiple items together, such as a list of stories. We will use these concepts to create and manage our stories efficiently.

Let's start by defining the structure for our Story Manager. This component will be responsible for managing our stories.

Here, we define a class named StoryManager. Inside this class, we set up a collection called stories that will hold our generated stories. This collection is initialized as empty, ready to store stories as they are created.

Note that this implementation keeps stories in memory only during the program’s execution. Once the program stops, the stored stories are lost. For long-term persistence, we’ll later need to store them in a database or file.

Next, we need a way to add stories to our manager. Let's create a method that allows us to do this.

The add_story method takes two pieces of information: the prompt and the story itself. It creates a new entry containing a unique identifier (based on the current number of stories), the prompt, and the story. This entry is added to the collection of stories. The method then returns the newly added story, allowing us to confirm that it was successfully stored.

To make our Story Manager useful, we need to be able to retrieve stories. Let's implement methods for this purpose.

The get_stories method returns the entire collection of stories, allowing us to access all stored stories at once.

The get_story_by_id method retrieves a specific story using its unique identifier. This is useful when we want to access a particular story without going through the entire collection.

Now that we have our StoryManager class, let's see how to use it in practice. We'll implement a simple script to test our class.

In this script, we first import the StoryManager class. We then create an instance of StoryManager and simulate adding a story using a test prompt and fake story data. The add_story method is called, and the result is printed to confirm the addition. Finally, we print all stored stories using the get_stories method. The output will show the newly added story and the list of all stories.

In this lesson, we built the StoryManager class, which is essential for managing and storing stories in our short story generation service. We covered how to create the class, add stories with unique IDs, and retrieve them. As you move on to the practice exercises, you'll have the opportunity to apply these concepts and solidify your understanding. Remember, managing data effectively is key to building robust applications. Keep up the great work, and get ready to put your skills into practice!