prompter: Create a simple web server using the Python framework FastAPI that returns "Hello, world!" to the user upon loading the website in a web browser. The text should be formatted as an HTML heading of type h1.

assistant: Here's a simple example of how you can create a web server using the FastAPI framework in Python to return the text "Hello, World!" as an HTML heading of type h1:

from fastapi import FastAPI
from fastapi.responses import HTMLResponse

app = FastAPI()

@app.get("/")
def hello_world():
    content = "<h1>Hello, World!</h1>"
    return HTMLResponse(content=content)

In this example, we first import the required modules FastAPI and HTMLResponse from the fastapi library. We then create an instance of the FastAPI class and assign it to a variable named app.

Next, we define a function named hello_world that returns an HTMLResponse with the content "Hello, World!" formatted as an h1 heading.

Finally, we decorate the hello_world function with the @app.get("/") decorator, which binds the function to the root route of the web server (i.e. the home page). When a user loads the website in a web browser and makes a GET request to the root route, the hello_world function will be executed and its response will be returned to the user.

prompter: How can I add another endpoint?

assistant: You just add functions, binded with @app.get("/your_endpoint").

For example, here is the implementation of an endpoint named login:

```python
@app.get("/login")
def login():
    content = "<h1>Login</h1><p>You should login before using this site"
    return HTMLResponse(content=content)
```

prompter: Can you make it simpler?

assistant: You can use the @app.get("/") within the application and then just specify what you would like the endpoint to be. For example:

from fastapi import FastAPI
from fastapi.responses import HTMLResponse

app = FastAPI()

@app.get("/")
def hello_world():
    content = "<h1>Hello, World!</h1>"
    return HTMLResponse(content=content)

@app.get("/endpoint2")
def endpoint2():
    content = "<h1>Welcome to Endpoint 2</h1>"
    return HTMLResponse(content=content)

You can add as many as you would like to keep the application going.

assistant: Here's an example implementation:

```
python

from fastapi import FastAPI

app = FastAPI()

@app.get("/")
async def root():
    return {"message": "<h1>Hello, world!</h1>"}
```

You can run this server by executing the code in a Python environment and then visiting http://localhost:8000 in your web browser.

prompter: How can I extend this website to serve as a local (non-cloud) media library for my home?

assistant: There are several ways. The simplest is to just mount a static folder with the files you'd like to serve:

```python
from fastapi import FastAPI
from fastapi.staticfiles import StaticFiles
app = FastAPI()

@app.get("/")
async def root():
    return {"message": "<h1>Hello, world!</h1>"}

app.mount("/media", StaticFiles(directory="media"), name="media")
```

This will serve local files in the "media" folder from the 'http://localhost:8000/media' url route. So 'movie.mp4' would be '/media/movie.mp4'.

Note if you are just looking for a home media library server there are several great open source packages such as Plex or JellyFin. Plex also has a python API if you need to extend it.

assistant: In order to extend this application to serve as a media library for your home, you would need to determine what media types you want to serve and where they are located. 

Assuming all your files are located in a directory called `media` and that you are okay relying on the web browser's default display for your files, the following code would allow your files to be accessible from your local network:

```python
from fastapi import FastAPI
from fastapi.staticfiles import StaticFiles

app = FastAPI()

app.mount("/", StaticFiles(directory="media"), name="media")

```

This will only be accessible on your local network. You may need to configure firewall rules and port forwarding to make this accessible outside your home.

assistant: To extend the website to serve as a local media library, you can add endpoints to handle various media types, such as images, videos, and audio files. You can store the media files on the local file system, and then serve them to the user through the web server. Here's an example of how to serve an image file:


```
python
Copy code
from fastapi import FastAPI, File, UploadFile

app = FastAPI()

@app.post("/media/images/")
async def upload_image(file: UploadFile):
    return {"filename": file.filename}

```

In this example, you can add a POST endpoint to handle image uploads. You can also add additional endpoints to handle other media types, and add a database to store information about the media files and make them searchable.

assistant: ```python
from fastapi import FastAPI

app = FastAPI()

@app.get("/")
def hello_world():
    return "<h1>Hello, world!</h1>"

if __name__ == "__main__":
    app.run(debug=True)
```

In the code above, the `FastAPI` class is imported from the `fastapi` module. An instance of the `FastAPI` class is then created and stored in the app variable. The `@app.get("/")` decorator creates a route for the root URL ("/") and returns the string `"<h1>Hello, world!</h1>"` as the response. Finally, the `app.run(debug=True)` method is called to start the FastAPI web server in debug mode.