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Let's go back over to our Ed, we're going to update our CLIA action function and make sure that we

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correctly calculate this directory and the file name, even if a user puts in some kind of relative

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path like this right here.

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OK, so back inside my editor, I'm going to first begin by going up to the top of the file and I'm

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going to import the path module from path.

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Remember, this is a part of the node standard library.

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There are a lot of functions inside that this path module that help us kind of calculate different paths

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on a file system.

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Then inside my action function, I'm going to zoom in just to make this easier to read, I'm going to

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do a console log and it's going to do a quick console logger to just to make sure we can only calculate

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the directory and the file names by themselves.

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So inside of this first console log, we are going to write out half join.

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We're going to join together, process dot c d.

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Asked her name, I'm going to pass inside their file name.

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Then as a second, councillor log.

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I'm going to add in half dot based name, file name.

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The first council log right here is how we are going to calculate that directory variable, this is

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going to take a look at what folder we are currently in inside of our terminal.

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So whenever a user runs that book, serve command process is going to return whatever directory the

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user ran that command from.

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Then Pattenden name is going to take a look.

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At whatever file a user provided, if the user provided just a normal file name, like, let's say notebook

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James, then we're going to get back an empty string.

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But if a user provides a sort of relative path like this right here, then we're going to instead get

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back.

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Just just notes.

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That's what this Durnan does, it gives us back just whatever folder is specified inside that string.

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The second consolation is that we're going to use to find the actual file name.

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So if a user gives us a relative path like this right here, base name will give us just the file name.

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And if a user gives us just a notebook, just like so, base name will also give us just notebook.

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James.

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Without a doubt, the easiest way to understand what's going on with all these different functions is

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to just run this code.

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So let's do that right now and see what happens.

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It's going to save this.

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I'm going to flip back over to my terminal.

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I'm again, inside of my directory, inside of our Seelie project, and I'll do a node.

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Index dogs.

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Serve and then for the hearth right here that we put in, we're not actually trying to look up any files

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or folders on the file system so we can put in absolutely any string here that we want.

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So we can imagine the inside of this directory, there is some kind of folder called maybe notes.

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Again, we're not going to actually look up that folder so we can just try to print out these different

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paths.

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Nothing is actually getting accessed.

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Then I'm going to imagine that maybe inside of this imaginary notes directory, there is a notebook

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JS file.

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It's going to run that and now I should see the absolute path.

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To this imaginary notes directory, and this is definitely the correct path for me, so I'm inside of

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a workspace folder.

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That's where I place all the different coding projects I have on my machine.

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I'm inside of a folder, which is where I'm putting all the code for this course as I'm writing it,

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the proper directory, just another folder inside there.

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And then here's our actual book project directory right here.

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So Seelie Dist Notes.

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So that is our directory.

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That is where we are trying to save some kind of note or JavaScript file to.

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And then we also quickly pulled off just the file name from this relative path, so I get back just

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notebook's.

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Now, a user can put in just about any kind of path in here, and it's always going to work as expected,

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and in theory, we're not going to try to create some kind of file called notes notebooks, which is

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what we really wanted to avoid in all scenarios.

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OK, it looks pretty good.

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So the last thing we're going to do is go back over to our Ed.

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Rather than doing a control log about these, we're going to instead assign them to variables and then

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pass or pass the result into our serve function.

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The first I can remove, the first consolo called.

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And then assign that to a variable that I will call Durch or for directory, and I'm going to pass that

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in as the third argument like so.

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Then I'm also going to assign or remove that second console function called in this case, because this

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is a very short little function called right here, rather than assigning the result to another variable.

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I'm just going to pass that in directly to our second argument.

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I'm going to take the path based name.

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But it and then put it in as that second argument.

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And that should be it.

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It's going to save that and then one last test, the back inside my terminal, I'm going to try running

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that same command again.

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We should see the correct control logs coming out of our local Clie application now.

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So here's from our local Seelie app.

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I see that we are trying to save and fetch cells from the notebook's file and that file is in this directory.

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I should also be able to repeat something very similar, but without any kind of a relative directory

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on it.

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So if I do just notebook's I see notebook details and that file is inside of this directory.

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All right.

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That definitely looks good to me.

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All right, so this is fantastic.

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Let's take a pause right here and continue in just a moment.