Expose API url variables for ghostnet & mainnet

.github/workflows/docker-nft-ghostnet-staging.yml

@@ -34,8 +34,6 @@ jobs:
           set -x
           ls -last .
           sed -i 's|http://localhost:8000|https://staging.gas-station-api.marigold.dev|g' ./examples/nft/.env
-          sed -i 's|KT1Re88VMEJ7TLHTkXSHQYZQTD3MP3k7j6Ar|KT199yuNkHQKpy331A6fvWJtQ1uan9uya2jx|g' ./examples/nft/.env
-          sed -i 's|KT1Rp1rgfwS25XrWU6fUnR8cw6KMZBhDvXdq|KT1MLMXwFEMcfByGbGcQ9ow3nsrQCkLbcRAu|g' ./examples/nft/.env
           cat ./examples/nft/.env
 
       - name: Set up Docker Buildx

.gitignore

@@ -1,4 +1,6 @@
 /examples/nft/node_modules/
 /examples/nft/.svelte-kit/
 node_modules
-dist
+dist
+**/*d.ts
+**/*.js

README.md

@@ -1,11 +1,11 @@
 # Tezos Gas Station library
 
-This library helps you
-- use [Marigold's Gas Station API](https://github.com/marigold-dev/gas-station) in TypeScript
-- create [TZIP-17 permit contracts](https://tzip.tezosagora.org/proposal/tzip-17/), which are FA2
-  contracts that can be manipulated by a 3rd party (such as the gas station API). Permits are signed
+This library facilitates the following:
+- Utilizing [Marigold's Gas Station API](https://github.com/marigold-dev/gas-station) in TypeScript.
+- Creating [TZIP-17 permit contracts](https://tzip.tezosagora.org/proposal/tzip-17/), which are FA2
+  contracts capable of being manipulated by a 3rd party, such as the gas station API. Permits are signed
   off-chain and can be posted and executed by anyone.
 
-A toy webapp example is available in the `examples/` directory.
+An example of a toy web app is provided in the `examples/nft` directory.
 
-Contributions welcome at https://github.com/marigold-dev/gas-station-lib.
+Feel free to contribute and provide feedback on https://github.com/marigold-dev/gas-station-lib.

examples/nft/.env

@@ -1,6 +1,6 @@
 PUBLIC_TZKT_API=https://api.ghostnet.tzkt.io
 PUBLIC_TEZOS_RPC=https://ghostnet.smartpy.io
-PUBLIC_GAS_STATION_API=http://localhost:8000/operation
-PUBLIC_PERMIT=KT1Re88VMEJ7TLHTkXSHQYZQTD3MP3k7j6Ar # GHOSTNET : KT199yuNkHQKpy331A6fvWJtQ1uan9uya2jx
-PUBLIC_STAKING_CONTRACT=KT1Rp1rgfwS25XrWU6fUnR8cw6KMZBhDvXdq # GHOSTNET : KT1MLMXwFEMcfByGbGcQ9ow3nsrQCkLbcRAu
+PUBLIC_GAS_STATION_API=http://localhost:8000
+PUBLIC_PERMIT=KT1HUdxmgZUw21ED9gqELVvCty5d1ff41p7J
+PUBLIC_STAKING_CONTRACT=KT1VVotciVbvz1SopVfoXsxXcpyBBSryQgEn
 PUBLIC_APP_BASE_URL=http://localhost:5173

examples/nft/README.md

@@ -1,5 +1,82 @@
-Toy example of a webapp using a gas station API and a permit contract. The webapp lets you mint a
-NFT and transfer it to a “staking” contract even if you have no tez in your wallet.
+# Gas Station Demo
 
-The contracts are already deployed on Ghostnet. Their addresses, together with the API URL, can be
-changed in the `.env` file.
+This project is a toy web application demonstrating the use of a Gas Station API and a Permit Contract on the Tezos blockchain.
+
+The web app allows you to mint a non-fungible token (NFT) and transfer it to a "staking" contract, even if you have no Tez in your wallet.
+
+
+## Prerequisites
+
+Before you start, ensure you have the following installed on your machine:
+
+- Node.js [Download and Install Node.js](https://nodejs.org/)
+- npm (Node Package Manager): Comes with Node.js installation
+- NVM (Node Version Manager): This is the key component for managing Node.js versions.
+  To install NVM for managing Node.js versions, refer to the official installation guide
+  at [install](https://github.com/nvm-sh/nvm#installing-and-updating)
+
+## Gas Station API and Permit Contract
+
+This project interacts with a Gas Station API and a Permit Contract on the Tezos blockchain. The contracts are already deloyed on Ghostnet. Configure the follwing in the `.env` file:
+
+- **Gas Station API URL**: the URL of the Gas Station API that handles the reply of operations to the blockchain.
+- **Permit Contract Address**: the address of the Permit Contract on the Tezos blockchain. This contract is used for authorizing and signing operations.
+- **Staking Contract Address (Optional)**: If applicable, the address of the Staking Contract where NFTs can be transferred.
+
+**Note:** The contract addresses and API URL can be changed in the `.env` file.
+
+
+## Configuration
+
+Copy the `.env.example` file to `.env` and update the following variables based on your deployment:
+
+```dotenv
+PUBLIC_TZKT_API=https://api.ghostnet.tzkt.io
+PUBLIC_TEZOS_RPC=https://ghostnet.smartpy.io
+
+# Gas Station API URL
+PUBLIC_GAS_STATION_API=http://localhost:8000
+
+# Permit Contract Address
+PUBLIC_PERMIT=KT1HUdxmgZUw21ED9gqELVvCty5d1ff41p7J
+
+# Staking Contract Address (if applicable)
+PUBLIC_STAKING_CONTRACT=KT1VVotciVbvz1SopVfoXsxXcpyBBSryQgEn
+
+PUBLIC_APP_BASE_URL=http://localhost:5173
+```
+
+## Running locally
+
+Navigate to the project folder:
+
+```
+cd examples/nft
+```
+
+To install dependencies, run:
+
+```
+npm install
+```
+or
+
+```
+npm i
+```
+
+To launch the project on your localhost using a development server, run:
+
+```
+npm run dev
+```
+
+Your project will be accessible at http://localhost:5173/
+
+To clean up generated files, run:
+
+```
+rm -rf node_modules
+```
+
+Make sure to configure the `.env` file with the appropriate values before running the project locally.

examples/nft/package.json

@@ -21,7 +21,7 @@
 	},
 	"type": "module",
 	"dependencies": {
-		"@marigold-dev/gas-station-lib": "^0.0.4",
+		"@marigold-dev/gas-station-lib": "^0.0.7",
 		"@airgap/beacon-sdk": "^4.0.4",
 		"@esbuild-plugins/node-globals-polyfill": "^0.2.3",
 		"@picocss/pico": "^1.5.10",

examples/nft/src/lib/MintingComponent.svelte

@@ -1,78 +1,154 @@
 <script lang="ts">
   import { Tezos, subTezos } from "$lib/tezos";
-  import { GasStation } from "@marigold-dev/gas-station-lib";
-  import { PUBLIC_PERMIT, PUBLIC_GAS_STATION_API, PUBLIC_TZKT_API } from '$env/static/public';
+  import {
+    GasStation,
+    GAS_STATION_PUBLIC_API_GHOSTNET,
+  } from "@marigold-dev/gas-station-lib";
+  import {
+    PUBLIC_GAS_STATION_API,
+    PUBLIC_PERMIT,
+    PUBLIC_TZKT_API,
+  } from "$env/static/public";
 
-  export let user_address = '';
+  export let user_address = "";
+  export let available_token_ids = new Set<string>(); // to be shared with StakingComponent
 
-
-  const token_id = 0;
   let user_tokens: any[] = [];
 
+  /*** Generate a random integer up to a given maximum value.
+   *   It uses to generate a random token ID when minting. */
+  function randomInt(max: number) {
+    return Math.floor(Math.random() * max);
+  }
+
+  // Converts an IPFS link to its HTTPs counterpart
   function IPFSLinkToHTTPS(url: string) {
     return url.replace("ipfs://", "https://ipfs.io/ipfs/");
   }
 
   function get_tokens(user_address: string) {
-    return fetch(`${PUBLIC_TZKT_API}/v1/tokens/balances?account=${user_address}&token.contract=${PUBLIC_PERMIT}&balance.gt=0`)
+    return fetch(
+      `${PUBLIC_TZKT_API}/v1/tokens/balances?account=${user_address}&token.contract=${PUBLIC_PERMIT}&balance.gt=0`,
+    )
       .then((response) => {
         return response.json();
       })
       .then((fa2_tokens) => {
         user_tokens = fa2_tokens;
       });
-    };
+  }
+
+  // Add minting progress
+  let mintingProgress = 0;
+  let isMinting = false;
 
+  /** This function is triggered when the "Mint" button is clicked.
+   *  It initiates the minting process, interacting with the permit contract
+   *  and gas station API. */
   function mint(user_address: string) {
-      (async () => {
-          const gas_api = new GasStation({
-            apiURL: PUBLIC_GAS_STATION_API
-          });
-          const contract = await Tezos.wallet.at(PUBLIC_PERMIT);
-          const mint_op = await contract.methodsObject.mint_token([{
+    const token_id = randomInt(6);
+    (async () => {
+      isMinting = true;
+
+      try {
+        const gas_api = new GasStation({
+          apiURL: PUBLIC_GAS_STATION_API,
+        });
+
+        const contract = await Tezos.wallet.at(PUBLIC_PERMIT);
+        const mint_op = await contract.methodsObject
+          .mint_token([
+            {
               owner: user_address,
               token_id: token_id,
-              amount_: 1
-          }]).toTransferParams()
-          console.log(mint_op);
-          const response = await gas_api.postOperation(user_address, {
-            destination: mint_op.to,
-            parameters: mint_op.parameter
-          });
-          console.log(response);
-          // √ construct mint operation from Taquito
-          // √ jsonize
-          // √ const reponse = await fetch("http://127.0.0.1/operation")
-          // √ display balance
-          // next: randomize (on the server side) the NFT we get
-          //       display an error message if we didn't wait for long enough
-      })();
+              amount_: 1,
+            },
+          ])
+          .toTransferParams();
+
+        mintingProgress = 50; // Set progress to 50% after Taquito operation
+
+        const response = await gas_api.postOperation(user_address, {
+          destination: mint_op.to,
+          parameters: mint_op.parameter,
+        });
+
+        mintingProgress = 100; // Set progress to 100% after gas station operation
+      } catch (error) {
+        console.error("Minting failed:", error);
+        mintingProgress = 0; // Reset progress on failure
+      } finally {
+        isMinting = false;
+      }
+      // √ construct mint operation from Taquito
+      // √ jsonize
+      // √ const reponse = await fetch("http://127.0.0.1/operation")
+      // √ display balance
+      // next: randomize (on the server side) the NFT we get
+      //       display an error message if we didn't wait for long enough
+    })();
   }
 
   subTezos(() => {
-    get_tokens(user_address)
+    get_tokens(user_address);
   });
+
+  // Maintain the set of available token IDs to pick one in the stash operation
+  $: available_token_ids = new Set(
+    user_tokens.map((token) => token.token.tokenId),
+  );
 </script>
 
 <div style="display: flex">
   <div>
-    <button on:click={() => mint(user_address)}>
-      mint
+    <button on:click={() => mint(user_address)} disabled={isMinting}
+      >{isMinting ? "Minting..." : "Mint"}
     </button>
+    {#if isMinting}
+      <div class="progress-bar">
+        <div
+          class="progress-bar-fill"
+          style={`width: ${mintingProgress}%`}
+        ></div>
+      </div>
+    {/if}
   </div>
 
   <div>
     {#if user_tokens.length == 0}
       <p>You don't have any tokens. Try minting one!</p>
     {:else}
-      {#each user_tokens as token, i}
-        <div>
-          <img src="{IPFSLinkToHTTPS(token.token.metadata.thumbnailUri)}" alt="Token thumnail"/>
-          <div style="text-align: center; font-size:14px">{token.balance}</div>
-        </div>
-      {/each}
+      <div style="display:flex;align-items:center;justify-content:center;">
+        {#each user_tokens as token, i}
+          <div
+            style="display:flex;flex-direction:column;justify-content:center;align-items:center;"
+          >
+            {#if Object.hasOwn(token.token, "metadata")}
+              <img
+                src={IPFSLinkToHTTPS(token.token.metadata.thumbnailUri)}
+                alt="Token thumnail"
+              />
+              <div style="text-align: center; font-size:14px">
+                {token.balance}
+              </div>
+            {/if}
+          </div>
+        {/each}
+      </div>
     {/if}
   </div>
 </div>
 
+<style>
+  .progress-bar {
+      background-color: #eee; /* Light gray background for the progress bar */
+      border: 1px solid #ccc; /* Border for the progress bar */
+      border-radius: 15px; /* Rounded corners */
+      height: 10px;
+    }
 
+  .progress-bar-fill {
+      background-color: #0074cc; /* Color for the filled part of the progress bar */
+      height: 100%; /* Fill the entire height of the progress bar */
+    }
+</style>

examples/nft/src/lib/Nav.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
   import { myAccount, connectWallet, getPKH } from '$lib/tezos';
 
-  function truncate_address(str) {
+  function truncate_address(str: string) {
     if (str.length > 25) {
       return str.substr(0, 10) + '...' + str.substr(str.length-5, str.length);
     }