fix testnet

Signed-off-by: Valentyn Faychuk <valy@detee.ltd>

Cargo.lock

@@ -2104,6 +2104,7 @@ dependencies = [
  "hyper 1.4.1",
  "hyper-rustls 0.27.3",
  "hyper-util",
+ "mpl-token-metadata",
  "prost",
  "prost-types",
  "public-ip",
@@ -2879,6 +2880,19 @@ version = "1.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c9be0862c1b3f26a88803c4a49de6889c10e608b3ee9344e6ef5b45fb37ad3d1"
 
+[[package]]
+name = "mpl-token-metadata"
+version = "5.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "989e6a3000e761d3b2d685662a3a9ee99826f9369fb033bd1bc7011b1cf02ed9"
+dependencies = [
+ "borsh 0.10.4",
+ "num-derive 0.3.3",
+ "num-traits",
+ "solana-program",
+ "thiserror",
+]
+
 [[package]]
 name = "multimap"
 version = "0.10.0"
@@ -2968,6 +2982,17 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"
 
+[[package]]
+name = "num-derive"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "876a53fff98e03a936a674b29568b0e605f06b29372c2489ff4de23f1949743d"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
+
 [[package]]
 name = "num-derive"
 version = "0.4.2"
@@ -4471,7 +4496,7 @@ dependencies = [
  "log",
  "memoffset",
  "num-bigint 0.4.6",
- "num-derive",
+ "num-derive 0.4.2",
  "num-traits",
  "parking_lot",
  "rand 0.8.5",
@@ -4500,7 +4525,7 @@ dependencies = [
  "itertools 0.12.1",
  "libc",
  "log",
- "num-derive",
+ "num-derive 0.4.2",
  "num-traits",
  "percentage",
  "rand 0.8.5",
@@ -4586,7 +4611,7 @@ dependencies = [
  "console",
  "dialoguer",
  "log",
- "num-derive",
+ "num-derive 0.4.2",
  "num-traits",
  "parking_lot",
  "qstring",
@@ -4906,7 +4931,7 @@ checksum = "cfd8e539a9963c2914ff8426dfe92351a902892aea465cd507e36d638ca0b7d6"
 dependencies = [
  "bincode",
  "log",
- "num-derive",
+ "num-derive 0.4.2",
  "num-traits",
  "rustc_version",
  "serde",
@@ -4933,7 +4958,7 @@ dependencies = [
  "itertools 0.12.1",
  "lazy_static",
  "merlin",
- "num-derive",
+ "num-derive 0.4.2",
  "num-traits",
  "rand 0.7.3",
  "serde",
@@ -4963,7 +4988,7 @@ dependencies = [
  "itertools 0.12.1",
  "lazy_static",
  "merlin",
- "num-derive",
+ "num-derive 0.4.2",
  "num-traits",
  "rand 0.7.3",
  "serde",
@@ -5017,7 +5042,7 @@ checksum = "68034596cf4804880d265f834af1ff2f821ad5293e41fa0f8f59086c181fc38e"
 dependencies = [
  "assert_matches",
  "borsh 1.5.1",
- "num-derive",
+ "num-derive 0.4.2",
  "num-traits",
  "solana-program",
  "spl-token",
@@ -5032,7 +5057,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "714b53f7312c2802c62f14bc8a07916c2c872761e3d6be97e99fd432be7799ca"
 dependencies = [
  "borsh 1.5.1",
- "num-derive",
+ "num-derive 0.4.2",
  "num-traits",
  "solana-program",
  "spl-associated-token-account-client",
@@ -5128,7 +5153,7 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d7b28bed65356558133751cc32b48a7a5ddfc59ac4e941314630bbed1ac10532"
 dependencies = [
- "num-derive",
+ "num-derive 0.4.2",
  "num-traits",
  "solana-program",
  "spl-program-error-derive",
@@ -5183,7 +5208,7 @@ checksum = "70a0f06ac7f23dc0984931b1fe309468f14ea58e32660439c1cef19456f5d0e3"
 dependencies = [
  "arrayref",
  "bytemuck",
- "num-derive",
+ "num-derive 0.4.2",
  "num-traits",
  "num_enum",
  "solana-program",
@@ -5198,7 +5223,7 @@ checksum = "d9c10f3483e48679619c76598d4e4aebb955bc49b0a5cc63323afbf44135c9bf"
 dependencies = [
  "arrayref",
  "bytemuck",
- "num-derive",
+ "num-derive 0.4.2",
  "num-traits",
  "num_enum",
  "solana-program",
@@ -5222,7 +5247,7 @@ checksum = "c0b788a8c34a917b68b4ed2cdec255d03cc09ccba21545dac39c08a97fce640f"
 dependencies = [
  "arrayref",
  "bytemuck",
- "num-derive",
+ "num-derive 0.4.2",
  "num-traits",
  "num_enum",
  "solana-program",

Cargo.toml

@@ -22,6 +22,7 @@ solana-program = "2.0"
 solana-sdk = "2.0"
 spl-associated-token-account = "5.0"
 spl-token = "6.0"
+mpl-token-metadata = "5.0"
 tokio = { version = "1.40", features = ["macros", "rt-multi-thread", "fs"] } # this can be "full"
 tokio-stream = { version = "0.1", features = ["sync"] }
 # sgx poc dependencies

LICENSE

@@ -0,0 +1,227 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 2025, DeTEE, Ltd. https://detee.ltd/
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+ Contact the author at https://detee.ltd/#contacts
+
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.

scripts/testnet.sh

@@ -47,12 +47,11 @@ address=$(docker logs dthc0 | grep 'SOL' | awk '{ print $NF }')
 "${script_dir}"/mint_sol "${address}"
 while true; do
     echo -n "." && sleep 1
-    docker logs dthc0 | grep -q "Mint created" && echo && break
+    docker logs dthc0 | grep -q "Heartbeat..." && echo && break
 done
 
 echo "Creating a cluster with ${num_nodes} nodes"
 for n in $(seq 1 $num_nodes); do
-    #init_nodes=$(docker inspect dthc0 --format '{{ .NetworkSettings.Networks.dthc.IPAddress }}')
     node_ip="172.18.0.$((2 + n))"
     node_port=$((31300 + n))
     node_volume="/tmp/dthc${n}"
@@ -69,15 +68,13 @@ for n in $(seq 1 $num_nodes); do
                detee/hacker-challenge:test
 done
 
+echo "Initialing test.."
+sleep 4;
+
 echo "Running the test mint"
 for n in {1..20}; do
     node_port=$((31300 + n))
-    curl -X POST "127.0.0.1:${node_port}/mint" \
+    curl -X POST "127.0.0.1:${node_port}/mint?address=EZT16iP1SQVUFf1AJN6oiE5BZPnyBUqaKDkZ4oZRsvhR" --connect-timeout 5 2> /dev/null
-         --json '{"wallet": "EZT16iP1SQVUFf1AJN6oiE5BZPnyBUqaKDkZ4oZRsvhR"}' \
-         --connect-timeout 5 2> /dev/null
-    echo ""
 done
 
-# curl 127.0.0.1:31303/metrics
-# curl -X POST 127.0.0.1:31303/mint -d '{"wallet": "EZT16iP1SQVUFf1AJN6oiE5BZPnyBUqaKDkZ4oZRsvhR"}' -H 'Content-Type: application/json'
 # docker run --name dthc0 --network dthc -d --ip 172.18.0.2 --env NODE_IP="172.18.0.2" --env INIT_NODES="172.18.0.5 172.18.0.3 172.18.0.4" --volume /tmp/dthc0:/challenge/main --publish 31300:31372 --device /dev/sgx/provision --device /dev/sgx/enclave detee/hacker-challenge:test

src/datastore.rs

@@ -1,9 +1,11 @@
 use crate::persistence::{SealError, SealedFile};
 use serde::{Deserialize, Serialize};
 use serde_with::{serde_as, TimestampSeconds};
-use std::collections::{HashMap, HashSet};
+use std::{
-use std::sync::atomic::{AtomicBool, Ordering};
+    collections::{HashMap, HashSet},
-use std::time::{Duration, SystemTime, UNIX_EPOCH};
+    sync::atomic::{AtomicBool, Ordering},
+    time::{Duration, SystemTime, UNIX_EPOCH},
+};
 use tokio::sync::RwLock;
 
 type IP = String;

src/grpc/server.rs

@@ -6,8 +6,7 @@ use crate::{datastore::State, grpc::challenge::update_server::Update};
 use detee_sgx::RaTlsConfig;
 use rustls::pki_types::CertificateDer;
 use std::{pin::Pin, sync::Arc};
-use tokio::sync::broadcast::Sender;
+use tokio::{sync::broadcast::Sender, time::interval};
-use tokio::time::interval;
 use tokio_stream::{Stream, StreamExt};
 use tonic::{Request, Response, Status, Streaming};
 
@@ -139,12 +138,12 @@ struct ConnInfo {
 
 #[tonic::async_trait]
 impl Update for NodeServer {
+    type GetUpdatesStream = Pin<Box<dyn Stream<Item = Result<NodeUpdate, Status>> + Send>>;
+
     async fn get_keys(&self, _request: Request<Empty>) -> Result<Response<Keys>, Status> {
         Ok(Response::new(self.keys.clone()))
     }
 
-    type GetUpdatesStream = Pin<Box<dyn Stream<Item = Result<NodeUpdate, Status>> + Send>>;
-
     async fn get_updates(
         &self,
         req: Request<Streaming<NodeUpdate>>,

src/http_server.rs

@@ -56,16 +56,16 @@ async fn get_nodes(state: web::Data<Arc<State>>) -> HttpResponse {
 
 #[derive(Deserialize)]
 struct MintReq {
-    wallet: String,
+    address: String,
 }
 
 #[post("/mint")]
 async fn mint(
     state: web::Data<Arc<State>>,
     sol_client: web::Data<Arc<SolClient>>,
-    req: web::Json<MintReq>,
+    req: web::Query<MintReq>,
 ) -> impl Responder {
-    let recipient = req.into_inner().wallet;
+    let recipient = req.into_inner().address;
     state.increase_mint_requests().await;
 
     if state.is_minting() {

src/main.rs

@@ -54,7 +54,8 @@ pub async fn heartbeat(
         state.update_keepalive().await;
         state.remove_inactive_nodes().await;
         let connected_ips = state.get_connected_ips().await;
-        println!("Connected nodes ({}): {:?}", connected_ips.len(), connected_ips);
+        let my_ip = state.get_my_ip().await;
+        println!("Connected nodes ({}): \"{}\" -> {:?}", connected_ips.len(), my_ip, connected_ips);
         let my_node_info = state.get_my_info().await;
         my_node_info.save();
         let _ = tx.send((state.get_my_ip().await, my_node_info).into());

src/solana.rs

@@ -1,5 +1,10 @@
 #![allow(dead_code)]
 use crate::{grpc::challenge::Keys, persistence::KeysFile};
+use mpl_token_metadata::{
+    instructions::{CreateMetadataAccountV3, CreateMetadataAccountV3InstructionArgs},
+    types::DataV2,
+    ID as mpl_token_metadata_id,
+};
 use solana_client::nonblocking::rpc_client::RpcClient;
 use solana_program::program_pack::Pack;
 use solana_sdk::{
@@ -127,31 +132,56 @@ impl TryFrom<KeysFile> for SolClient {
     }
 }
 
-async fn wait_for_sol(client: &RpcClient, pubkey: &Pubkey) {
+async fn create_token(client: &RpcClient, payer_keypair: &Keypair) -> Pubkey {
-    println!("Waiting to receive 0.01 SOL in address {pubkey}");
+    // #1 top up the payer
-    loop {
+    println!("Waiting for at least 0.01 SOL in address {}", payer_keypair.pubkey());
+    while !has_enough_lamports(client, &payer_keypair.pubkey(), 10_000_000).await {
         sleep(Duration::from_secs(30)).await;
+    }
+
+    // #2 create token mint
+    println!("Creating Token Mint");
+    let mut mint_pubkey = None;
+    while mint_pubkey.is_none() {
+        sleep(Duration::from_secs(30)).await;
+        mint_pubkey = create_mint(client, payer_keypair).await;
+    }
+    let mint_pubkey = mint_pubkey.unwrap();
+    println!("Token Mint created: {mint_pubkey}");
+
+    // #3 create token meta
+    println!("Creating Token Metadata");
+    while !create_meta(client, payer_keypair, &mint_pubkey).await {
+        sleep(Duration::from_secs(30)).await;
+    }
+    println!("Token Metadata created");
+
+    mint_pubkey
+}
+
+async fn has_enough_lamports(client: &RpcClient, pubkey: &Pubkey, threshold: u64) -> bool {
     match client.get_balance(pubkey).await {
         Ok(balance) => {
-                println!("Got {balance} lamports.");
+            println!("{pubkey} needs {threshold} and has {balance}");
-                if balance > 10_000_000 {
+            balance >= threshold
-                    return;
         }
-            }
+        Err(e) => {
-            Err(e) => println!("Could not get balance: {e:?}"),
+            println!("Could not get balance: {e:?}");
+            false
         }
     }
 }
 
-async fn create_token(client: &RpcClient, keypair: &Keypair) -> Pubkey {
+async fn create_mint(client: &RpcClient, payer_keypair: &Keypair) -> Option<Pubkey> {
-    wait_for_sol(client, &keypair.pubkey()).await;
-
     let mint_keypair = Keypair::new();
-    let payer = Keypair::from_base58_string(&keypair.to_base58_string());
+    let mint_rent = client
-    let mint_rent = client.get_minimum_balance_for_rent_exemption(Mint::LEN).await.unwrap();
+        .get_minimum_balance_for_rent_exemption(Mint::LEN)
+        .await
+        .map_err(|e| println!("Can't get minimum balance for rent exemption: {e}"))
+        .ok()?;
 
     let create_mint_account_ix = system_instruction::create_account(
-        &payer.pubkey(),
+        &payer_keypair.pubkey(),
         &mint_keypair.pubkey(),
         mint_rent,
         Mint::LEN as u64,
@@ -159,21 +189,91 @@ async fn create_token(client: &RpcClient, keypair: &Keypair) -> Pubkey {
     );
 
     let init_mint_ix =
-        initialize_mint(&spl_token::id(), &mint_keypair.pubkey(), &payer.pubkey(), None, 9)
+        initialize_mint(&spl_token::id(), &mint_keypair.pubkey(), &payer_keypair.pubkey(), None, 9)
-            .unwrap();
+            .map_err(|e| println!("Can't initialize mint: {e}"))
+            .ok()?;
+
+    let recent_blockhash = client
+        .get_latest_blockhash()
+        .await
+        .map_err(|e| println!("Can't get latest blockhash: {e}"))
+        .ok()?;
 
-    let recent_blockhash = client.get_latest_blockhash().await.unwrap();
     let tx = Transaction::new_signed_with_payer(
         &[create_mint_account_ix, init_mint_ix],
-        Some(&payer.pubkey()),
+        Some(&payer_keypair.pubkey()),
-        &[&payer, &mint_keypair],
+        &[&payer_keypair, &mint_keypair],
         recent_blockhash,
     );
 
-    let signature = client.send_and_confirm_transaction(&tx).await.unwrap();
+    client
-
+        .send_and_confirm_transaction(&tx)
-    println!("Mint created: {}", mint_keypair.pubkey());
+        .await
-    println!("Transaction signature: {}", signature);
+        .map_err(|e| println!("Can't execute transaction: {e}"))
-
+        .map(|s| {
+            println!("Transaction signature: {}", s);
             mint_keypair.pubkey()
+        })
+        .ok()
+}
+
+async fn create_meta(client: &RpcClient, payer_keypair: &Keypair, mint_pubkey: &Pubkey) -> bool {
+    create_meta_int(client, payer_keypair, mint_pubkey).await.is_some()
+}
+
+async fn create_meta_int(
+    client: &RpcClient,
+    payer_keypair: &Keypair,
+    mint_pubkey: &Pubkey,
+) -> Option<()> {
+    let metadata_seeds = &[b"metadata", mpl_token_metadata_id.as_ref(), mint_pubkey.as_ref()];
+    let (metadata_pda, _bump) =
+        Pubkey::find_program_address(metadata_seeds, &mpl_token_metadata_id);
+
+    let data_v2 = DataV2 {
+        name: "DeTEE Hacker Challenge Token".to_string(),
+        symbol: "DTHC".to_string(),
+        uri: "https://detee.ltd/dthc/meta.json".to_string(),
+        seller_fee_basis_points: 0, // usually for NFTs, can be 0 for fungible
+        creators: None, // or Some(vec![Creator { ... }]) if you want to specify creators
+        collection: None,
+        uses: None,
+    };
+
+    let create_metadata_account_ix = CreateMetadataAccountV3 {
+        metadata: metadata_pda,
+        mint: *mint_pubkey,
+        mint_authority: payer_keypair.pubkey(),
+        payer: payer_keypair.pubkey(),
+        update_authority: (payer_keypair.pubkey(), true),
+        system_program: solana_program::system_program::id(),
+        rent: None,
+    }
+    .instruction(CreateMetadataAccountV3InstructionArgs {
+        data: data_v2,
+        is_mutable: true,
+        collection_details: None,
+    });
+
+    let recent_blockhash = client
+        .get_latest_blockhash()
+        .await
+        .map_err(|e| println!("Can't get latest blockhash: {e}"))
+        .ok()?;
+
+    let tx = Transaction::new_signed_with_payer(
+        &[create_metadata_account_ix],
+        Some(&payer_keypair.pubkey()),
+        &[&payer_keypair],
+        recent_blockhash,
+    );
+
+    client
+        .send_and_confirm_transaction(&tx)
+        .await
+        .map_err(|e| println!("Can't execute transaction: {e}"))
+        .map(|s| {
+            println!("Transaction signature: {}", s);
+        })
+        .ok()
 }