I am currently trying to develop a random chat application which matches users randomly and allows them to chat and then add each other as friends (if they enjoyed the chat) in order to continue the chat.
So now I need to solve three problems:
match users randomly
My idea would be to implement a method which randomly picks two user ids from my users collection. But I do not know how to implement this in code - Can anybody help here?
craete a chat room to store the messages
This is the most difficult part. Currently my idea is to create a collection called "chats" and add a document which is named "$uid of user 1 & $uid of user2" where I save the messages. But I do not know how that would look in code and whether this actually solves the problem.
create a friend list
My idea is to create a list inside each user document and save the user ids of all friends. How could that be implemented in code? And is there a better solution to that?
Related
I am very new to coding. but i managed to build a group chat app using a low code platform called flutterflow. i managed to spend significant amount of time on it and was able to build a public group chat app except few functionalities. I am hoping to find help from here. for the following questions.
I have chat mods appointed on a group level. like if you create a group, you are a founder and you can assign mods to that perticular group chat. now i want these mods to be able to ban a user in that particular group chat.
I have tried created a subcollection in groups called "banned user" and created two feilds. one is "banned users" document reference to users. and another is "banned_till" to record a time stamp until the user gets banned.
Problem with this is when i ban a user twice, it creates two documents in the user reference with the same user. and two documents has different "banned_till" times. which one it is supposed to pick?
i tried to do this and put a conditional visibility to the chat that "if current time is less than or equal to banned_till time" it wont let user type in the textfield to chat. but this is giving me gray screen.
I am very new to this. any help would be appreciated.
there is specific way to do so. you have to set custom logic. like save all banned users in a firebase database object with thier max time and procced next.
I'm creating a appointment app in flutter using firebase in which I have keep the track of people that got appointment repeatedly based on their phone number . How do I get this count of repeated entries?
it would be better if you add some code and more information to your question so we can can answer correctly but based on my understanding you want to check if this user repeatedly booked appointments using your app considering that it is a logged in user not a guest,
in this case inside your Firestore collection that contains the users i assume that each document represent a user add to each document (user information) a counter (integer variable) called for example "appointementsNumber" and every time a user book an appointment this counter will be increased by one, in this case you are able to know how many times this user booked an appointment.
hopefully i did understand your question correctly.
First i'd like to add that while this is a Firestore question, im open to hear suggestions about integrating an additional Google service.
The System
I have a chat feature in my application. Since there could be a very decent scale, I decided to have a limit to a chat group.
Chat groups are not created by users and should be created automatically by using some sort of an incrementing index (e.g: room_1, room_2, ...., room_n).
The limit on each chat group is 100 users at most.
So if I have 100k users online, I'd expect to have 1k groups (aka n=1000).
The Issues
How can I distribute users, upon signing in, to chat groups? (Lets say the strategy is to fill current rooms first, hence the 'bucketing' in the title)
Since users can close the app without pressing "quit" or something, I need the system to know to adjust
You can add a counter to the room document and increment/decrement it using by FieldValue.increment, here is an usage example in Javascript:
//when a user enter the room
db.collection('chat_rooms').doc('room_1').update({
userCount: firebase.firestore.FieldValue.increment(1)
});
//when a user quits the room
db.collection('chat_rooms').doc('room_1').update({
userCount: firebase.firestore.FieldValue.increment(-1)
});
Since FieldValue.increment() gets the current value of the counter you don't need to worry about racing conditions, which is good given that you expect to have a huge number of user so this will be constantly updated.
You can wrap this arround a check of the room counter and if the room is over the limit of users you set for rooms a new room can start being filled.
For your second question a bit more information is required, but assuming you are using android you can use the onAppBackgrounded function in the example provided in this community answer to call the update that decrements the counter in the chat room document if the app is backgrounded or closed by the user, as part of the "forcing" him out of the room.
I'm trying to implement a visitor-counter on a website built entirely with flutter-web and I'm trying to accomplish this with nothing but plain dart code and some packages from pub.dev.
But the problem which has been bugging me is that I need to find a way to uniquely identify users based on their browsers or their devices so that I don't end up incrementing the counter for the same person again and again upon a revisit.
So far what I've thought is that I could use firestore for keeping track of the total number of visitors and display the same on the webpage upon startup and use some caching package like dcache or localstorage (like described here) to keep track of users who are re-visiting the same webpage.
Is there any better approach to this problem? Any help would be appreciated 😁
(ps: I have no prior web dev experience)
Since you talk about users, I immediately think of using Firebase Authentication.
There are two ways you could use that here:
With anonymous authentication, you could create a unique ID for each user without requiring them to enter credentials.
If you want to be able to identify the same user on different browsers/devices, they will have to sign in with one of the supported providers (email/password, phone number, email link, facebook, google, etc).
No matter which one you choose, each user will now have a unique ID (called UID in Firebase terms), which you can use to identify them in the database. For example, you could create a document for each user in the database with their UID as the ID of that document. That way you're guaranteed that each user will have no more than a single document.
You'll still need to count the documents, for which I recommend checking out the distributed counter extension.
Also consider if you want to use the Firebase Realtime Database instead of Firestore here, as it might give you a simpler pricing model, and has a built-in presence system. You'd still use Firebase Authentication as before, but just swap the database.
There is a short way instead if you just want to capture number of visitors on your webapp.
I created a collection called "Visits" in firestore and generated auto id inside which I added a field called "count". That's it!
Now you just have to call this method in your first screen's init method :
updateCounter() async {
final cRef = FirebaseFirestore.instance.collection('VISITS');
await cRef
.doc("mS9fCXjvkpREt8LvanSb") //Paste the id which was generated automatically
.set({"count": FieldValue.increment(1)}, SetOptions(merge: true));
}
Could someone give me a link (github/gitlab) of a swift projet which show the possibility of managing Users on Parse.
For example , I would like for a user (who have 15 friends):
to create a group with 5 friends for example (the user could add a name for this group)
to delete if necessary the group
to send a message(textfield) to a group
to send a message (textfield) to a user
For the UI, I would like if it exists, to manager user like the Springboard (having the picture of user in round), and when you longpress on it, you have a cross to delete /and 'block sign' to block user.
And the user could drag/drop other user on his friend list to create a group (like on the Springboard when you create a group of app)
Thanks for helping me !
Have a nice day!
I've not come across such framework for parse/swift. I think you need to build it yourself.
This might help you in the direction:
Friend/de-friend people: https://stackoverflow.com/a/32557977/3314336 &
Parse Swift: User relations with a "friends request"
Send messages framework: https://github.com/slackhq/SlackTextViewController
What you're asking for is pretty general and extensive. You could use Roles and Relations to manage friend groups. You could have Group objects, give them an owner, and a relation for all the members of the group.
For chat, I'd recommend not trying to just build that directly into Parse. Twilio recently released their Programmable Chat feature, which is awesome. Sounds like it'd be beneficial for you to use that.