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Welcome back.

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Now that our authentication functionality seems to work, let's look at database.

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So there we have two options, right?

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So one, in the database, you can either use fire store or you can use the.

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Real time database and I talked about it very briefly before, but what we are just going to use the

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cloud firestorm because it's more powerful queries, automatic scaling.

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So it's just a better choice for us.

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Right.

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So let's go ahead and create that.

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We are going to use the test mode because we want to be able to test everything.

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Right.

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Anyone with a database reference will be able to read right to your database for 30 days.

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So this is a high risk approach.

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Of course, anything good or many things could go wrong.

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But in our case, because we want to test it, it's going to make our life a lot easier, especially

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at the beginning.

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So once you're in production, you should definitely change your rules there.

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Then you have to select your cloud forest location so where the data should be located.

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So you have, of course, multiple different options here.

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I'm just going to use Europe West because I am in Europe and then I'm going to press down.

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If you have an application where your user base will be mainly in another country or in one specific

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country, then you definitely have to consider that your put your location cloud first location specifically

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at that location.

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OK.

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All right, once that is done, you will find yourself seeing the screen where you have data rules,

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indexes and usage and by the way, in rules, that's the thing that has been changed for us to hear.

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Read right.

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Is activated so that we can.

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Ride around and play around with it, you can see, hear, read, write, and then request time, time

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stamp date 20, 20, the 22nd of March, then it will change.

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OK, so for now, it's a ride are both allowed, but later on we'll change it.

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And you can change those rules any time.

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If you want to know more about the rules, check out the documents here.

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OK, but for now, it's going to be fine for us.

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We can just go ahead to the data tab and yea, we can now create our own collections.

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For example, we can go ahead and create a collection called User's.

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So let's go ahead and create this collection called Users, and now you can go ahead and create and

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document ID, for example, you can go ahead and create an auto ID.

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You can add all of the different fields that you want to have.

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For example, for user, what we have is the name, the email address.

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And then we could have something like an image or whatever you can come up with.

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Right.

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But the thing is, you don't even need to do that here.

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So we can, of course, create a collection and create everything just here in this beautiful UI.

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But we are going to do that in code.

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So you will see how to create collections and those objects, so to speak, in code, because we will

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create a class, a user's class, which will then contain all of the information that we want to store

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about a user.

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All right.

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At that point, we can go back to our project and we will need to add a new.

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Implementation here or a new dependency to our project, so let's add that it's the first to implementation

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here.

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Let me add that you can see Firebase.

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Firestorm 21 four zero, so it's similar to what we had before when we had firebase off and you can

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see the versions, they differ a little bit.

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So now we're using Firestone.

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Later on, we will use storage and we will need to add another dependancy.

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But for now, this is going to do.

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So don't forget to think it, of course, and once the singing is done, you can start thinking, all

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right, you can start using Storm.

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All right, and the next thing is that we are going to create a new class, so the thing is I thought

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about different ways to approach this application and doing it in while doing the code that you need

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in the classes where you need them to create a lot of duplication.

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And I thought it would be a lot nicer to have a very clean structure that you can easily re use and

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then also easily adjust and maintain.

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So let's say at one point Firebase doesn't work anymore.

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So you don't want to go to every single class and make changes to every single part of the application.

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But you want to have one class which handles the whole database stuff.

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So in case Firebase doesn't work anymore, you need to change to another solution in the future.

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For whatever reason, Firebase doesn't exist anymore.

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They go bankrupt even though it's highly unlikely that Google will ever go bankrupt.

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But I mean, like generally, if you use a solution which could potentially go obsolete at one point,

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then it's always good to have the code already be prepared for this.

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And that's what we're going to do.

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So we are going to create an extra class which will take care of the whole database stuff and horror

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of the whole fire store stuff.

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And that will make our life a lot easier if we ever have to change anything.

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OK, so let's go ahead and create a new directory here.

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So a new package and this one will be Firebase and inside of Firebase.

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I want to have this new class, which I'm gonna call Firestar class.

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Very awesome name.

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So file class.

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Fire store, or maybe it's just a store class, all right then and here, I want to put all of the different

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fire base fire store dependent or irrelevant code.

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So, first of all, I will need to have an instance of the fire based fire storm.

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All right.

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So private fall and fire storm, I'm going to call it, and will be fire base, fire store, dot, get

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instance.

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So let's get the instance directly.

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Fire based firestorm needs to be written correctly.

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Then it will also allow me to use it in my case.

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So you can see we have this new import here, fire base, fire store, and then we get the instance.

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So let me see what still complaining because it added this tour.

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OK, so now we have our fire base fire, for instance.

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And now we can go ahead and create a new user so we can register a user in our database, so the idea

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is that we don't only registered user directly in the authentication module, but also in our database.

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So not only here in authentication, where we have the user, we have this identifier that we have when

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we was created and the user ID.

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But we also want to store a little more information about the user.

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So each time user registers, we also want to have them in the database so that we can then add information

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about as, let's say, telephone number.

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If you want that or if you want to add an image of him or he wants to add an image of him, then we

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want to be able to do that, OK?

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And that's why we need to have an entry for every user in our database.

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So let's create a little function, which will do just that, so fun register user, which will need

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an activity and I'm going to pass on the sign up activity and then user info, which will be of type

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user.

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So we will need to create a class which allows us to do a lot of stuff.

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Right.

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So let's go ahead.

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Do we have the users already?

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No, we don't have it.

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So we need to create a new model called user.

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So let's go ahead and create it real quick, New Scotland class, and this one will be user.

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Now, this is going to be a data class, right, data class user, and we want to have a bunch of information

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about the user here.

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So when we use the data class, we just need those kind of brackets or not the curly ones just around

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the ones.

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So I want to store the ID of the user.

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So let's do that then.

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I want to store the name of the user.

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Then what else would be interesting?

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Well, the email would be nice.

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So let's add the email as well.

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Email of the user.

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Then what else?

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Well, image, how about an image, so I'm going to store the image as a string as well because I'm

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just going to store the image location on the database.

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So it's not really the database, but it's actually the.

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Storage functionality of firebase, so you can see we have an extra.

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The point here, which is called storage, so you can store images or even videos on the storage.

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All right.

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So we will have the image then, maybe also the mobile number of the user, so mobile, which will be

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a long.

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I'm just going to set to zero for now and then to Afkham token.

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So we will also need to have a token of the user so that we know that it's the specific user that is

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Lockton next.

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I would like to make this class pasodoble, and in order to do so, I can of course, write all of the

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code manually or I can just go to settings and then have a new plugin.

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So here on the plugins, let's search for Paul sellable and you will find this Android Pozible coal

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generator.

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That's the one that I want.

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And for it to work, you need to restart the idea, all right, at that point, it should work.

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So let's make it past sellable for so long, though, with a capital P, of course I'll pass lable.

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And now implement the members.

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And also at the pass the level implementation, so you can see it will create all of this stuff here,

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constructor pozole restring.

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Right.

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Passell described then also this companion object creator.

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So this is automatically generated now by the help of the plugin that we just installed.

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Now, at this point, it's complaining because Passell.

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Our restring is going to return a nullable, so we need to add all of those exclamation marks.

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But once we've done that, you can see by my class already so far.

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Now, when we want to describe contents, what we're going to do is we're just going to assign zero

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to it.

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And to write Postle here, we're just going to add a bunch of right strings.

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So write string the ID.

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And by the way, I'm just going to make Pozole and not Nullable.

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And also I need to add this statement here with that.

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And now.

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Right.

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String is going to work.

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So we need to do what's right string for all of the different values that we have.

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So here it's going to be right long for the number.

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For the phone number, right?

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So.

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That's add mobile here.

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This one was the idea, and we had the name, we had the email and we had the image.

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Then finally we had the same token.

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OK, so.

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When we write into a parcel, what we're going to do is we write all of our variables that we have here.

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OK, so at this point, this class is going to be ready and we can go on because the video is already

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going to be so long because we need to still add quite some stuff in the first class or we need to create

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a first class and so forth.

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I would say let's make a quick break here and then finish this part of the exercise or part of the code

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in the next video where we're going to finally be able to add data to our database in the fire store

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database.

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So see you there.