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onchain_identity.move
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onchain_identity.move
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module nft_tutorial::onchain_identity {
use std::option::{Self, Option};
use sui::transfer;
use sui::object::{Self, UID};
use std::string::{Self, String};
use sui::tx_context::{Self, TxContext};
const EProfileMismatch: u64 = 0;
struct AdminCap has key { id: UID }
struct UserProfile has key {
id: UID,
user_address: address,
name: String,
bio: Option<String>,
twitter_handle: Option<String>,
}
public entry fun create_profile(name: vector<u8>, ctx: &mut TxContext) {
let user_profile = UserProfile {
id: object::new(ctx),
user_address: tx_context::sender(ctx),
name: string::utf8(name),
bio: option::none(),
twitter_handle: option::none(),
};
transfer::transfer(user_profile, tx_context::sender(ctx))
}
public entry fun change_bio(user_profile: &mut UserProfile, new_bio: vector<u8>, ctx: &mut TxContext) {
// Assert that only the user can change their own profile information
assert!(tx_context::sender(ctx) == user_profile.user_address, EProfileMismatch);
let old_bio = option::swap_or_fill(&mut user_profile.bio, string::utf8(new_bio));
// We don't care about the old bio anymore, let's delete it!
_ = old_bio;
}
public entry fun delete_profile(_: &AdminCap, user_profile: UserProfile) {
let UserProfile {
id,
user_address: _,
name: _,
bio: _,
twitter_handle: _,
} = user_profile;
object::delete(id);
}
}