Very quick and dirty proof of concept of navigation, img loading with…

… the evm:// protocol.

contracts/TerraformExplorer.sol

@@ -2,6 +2,7 @@
 pragma solidity ^0.8.18;
 
 import "hardhat/console.sol";
+import "./libs/ToString.sol";
 
 import {IScriptyBuilder, WrappedScriptRequest} from "./interfaces/IScriptyBuilder.sol";
 
@@ -23,7 +24,7 @@ contract TerraformExplorer {
 
     function indexHTML() public view returns (string memory) {
 
-        WrappedScriptRequest[] memory requests = new WrappedScriptRequest[](2);
+        WrappedScriptRequest[] memory requests = new WrappedScriptRequest[](3);
         requests[0].name = "scriptyBase";
         requests[0].wrapType = 0; // <script>[script]</script>
         requests[0].contractAddress = scriptyStorageAddress;
@@ -40,8 +41,25 @@ contract TerraformExplorer {
         // requests[1].wrapType = 0; // <script>[script]</script>
         // requests[1].scriptContent = "xxx";
 
-        requests[1].wrapType = 4; // [wrapPrefix][script][suffix]
-        requests[1].scriptContent = '<h1 style="text-align: center">Terraform explorer</h1>';
+        requests[1].wrapType = 4; // [wrapPrefix][script][wrapSuffix]
+        requests[1].wrapPrefix = "<style>";
+        requests[1].scriptContent = 'body {background-color: #171717; color: #f5f5f5}';
+        requests[1].wrapSuffix = "</style>";
+
+        requests[2].wrapType = 4; // [wrapPrefix][script][wrapSuffix]
+        requests[2].scriptContent = abi.encodePacked(
+            '<h1 style="text-align: center">Terraform explorer</h1>'
+            '<br />'
+            '<a href="evm://0x', ToString.addressToString(address(this)), '/viewHTML?tokenId:uint256=4197">'
+                '<img src="evm://0x4e1f41613c9084fdb9e34e11fae9412427480e56/tokenSVG?tokenId:uint256=4197" style="width:200px">'
+            '</a>'
+            '<a href="evm://0x', ToString.addressToString(address(this)), '/viewHTML?tokenId:uint256=4198">'
+                '<img src="evm://0x4e1f41613c9084fdb9e34e11fae9412427480e56/tokenSVG?tokenId:uint256=4198" style="width:200px">'
+            '</a>'
+            '<a href="evm://0x', ToString.addressToString(address(this)), '/viewHTML?tokenId:uint256=4199">'
+                '<img src="evm://0x4e1f41613c9084fdb9e34e11fae9412427480e56/tokenSVG?tokenId:uint256=4199" style="width:200px">'
+            '</a>'
+        );
 
         // Random buffer for now
         uint bufferSize = 291925;
@@ -52,5 +70,33 @@ contract TerraformExplorer {
         return string(html);
     }
 
+    function viewHTML(uint256 tokenId) public view returns (string memory) {
+
+        WrappedScriptRequest[] memory requests = new WrappedScriptRequest[](3);
+        requests[0].name = "scriptyBase";
+        requests[0].wrapType = 0; // <script>[script]</script>
+        requests[0].contractAddress = scriptyStorageAddress;
+
+
+        requests[1].wrapType = 4; // [wrapPrefix][script][wrapSuffix]
+        requests[1].wrapPrefix = "<style>";
+        requests[1].scriptContent = 'body {background-color: #171717; color: #f5f5f5}';
+        requests[1].wrapSuffix = "</style>";
+
+        requests[2].wrapType = 4; // [wrapPrefix][script][wrapSuffix]
+        requests[2].scriptContent = abi.encodePacked(
+            '<h1 style="text-align: center">Terraform ', ToString.toString(tokenId), '</h1>'
+            '<br />'
+            '<img src="evm://0x4e1f41613c9084fdb9e34e11fae9412427480e56/tokenSVG?tokenId:uint256=', ToString.toString(tokenId) ,'">'
+        );
+
+        // Random buffer for now
+        uint bufferSize = 291925;
+
+        bytes memory html = IScriptyBuilder(scriptyBuilderAddress)
+            .getHTMLWrapped(requests, bufferSize);
+
+        return string(html);
+    }
 
 }

contracts/libs/ToString.sol

@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+// Uncomment this line to use console.log
+import "hardhat/console.sol";
+
+library ToString {
+
+    function toString(uint value) internal pure returns (string memory) {
+        // Inspired by OraclizeAPI's implementation - MIT license
+        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
+
+        if (value == 0) {
+            return "0";
+        }
+        uint temp = value;
+        uint digits;
+        while (temp != 0) {
+            digits++;
+            temp /= 10;
+        }
+        bytes memory buffer = new bytes(digits);
+        while (value != 0) {
+            digits -= 1;
+            buffer[digits] = bytes1(uint8(48 + uint(value % 10)));
+            value /= 10;
+        }
+        return string(buffer);
+    }
+
+    function toString(int value) internal pure returns (string memory) {
+        return string(abi.encodePacked(value < 0 ? "-" : "", toString(uint(value < 0 ? - value : value))));
+    }
+
+    function addressToString(address x) internal pure returns (string memory) {
+        // Fetched from https://ethereum.stackexchange.com/questions/8346/convert-address-to-string/8447#8447
+
+        bytes memory s = new bytes(40);
+        for (uint i = 0; i < 20; i++) {
+            bytes1 b = bytes1(uint8(uint(uint160(x)) / (2**(8*(19 - i)))));
+            bytes1 hi = bytes1(uint8(b) / 16);
+            bytes1 lo = bytes1(uint8(b) - 16 * uint8(hi));
+            s[2*i] = char(hi);
+            s[2*i+1] = char(lo);            
+        }
+        return string(s);
+    }
+
+    function char(bytes1 b) internal pure returns (bytes1 c) {
+        // Fetched from https://ethereum.stackexchange.com/questions/8346/convert-address-to-string/8447#8447
+
+        if (uint8(b) < 10) return bytes1(uint8(b) + 0x30);
+        else return bytes1(uint8(b) + 0x57);
+    }
+
+}

test/TerraformExplorer.js

@@ -5,6 +5,7 @@ const {
 const { anyValue } = require("@nomicfoundation/hardhat-chai-matchers/withArgs");
 const { expect } = require("chai");
 
+
 // We define a fixture to reuse the same setup in every test.
 async function deployFixture() {