1module contract::nft {
2    use aptos_token_objects::collection;
3    use std::option::Self;
4    use std::string;
5    use aptos_token_objects::token;
6    use aptos_framework::object::{Self, Object};
7
8    #[resource_group_member(group = aptos_framework::object::ObjectGroup)]
9    /// The ambassador token
10    struct NFTToken has key {
11        /// Used to mutate the token uri
12        mutator_ref: token::MutatorRef,
13        /// Used to burn.
14        burn_ref: token::BurnRef
15    }
16
17    public entry fun create_collection(creator: &signer) {
18        let max_supply = 1000;
19        let royalty = option::none();
20
21        // Maximum supply cannot be changed after collection creation
22        collection::create_fixed_collection(
23            creator,
24            string::utf8(b"My Collection Description"),
25            max_supply,
26            string::utf8(b"Qiao Collection"),
27            royalty,
28            string::utf8(
29                b"https://learnblockchain.cn/image/avatar/18602_middle.jpg?GjIyGZqa"
30            )
31        );
32    }
33
34    public entry fun mint_token(creator: &signer) {
35        let royalty = option::none();
36        let token_constructor_ref =
37            token::create(
38                creator,
39                string::utf8(b"Qiao Collection"),
40                string::utf8(b"My NFT Description"),
41                string::utf8(b"QiaoToken"),
42                royalty,
43                string::utf8(
44                    b"https://img.learnblockchain.cn/space/banner/18602/h7ljMtGq668b998356db8.jpg"
45                )
46            );
47
48        let object_signer = object::generate_signer(&token_constructor_ref);
49
50        let burn_ref = token::generate_burn_ref(&token_constructor_ref);
51
52        let mutator_ref = token::generate_mutator_ref(&token_constructor_ref);
53
54        let nft_token = NFTToken { mutator_ref, burn_ref };
55        move_to(&object_signer, nft_token);
56    }
57
58    public entry fun burn(token: Object<NFTToken>) acquires NFTToken {
59        let ambassador_token = move_from<NFTToken>(object::object_address(&token));
60        let NFTToken { mutator_ref: _, burn_ref } = ambassador_token;
61
62        token::burn(burn_ref);
63    }
64}
65