feat(AuthorshipToken): owner minting

.gas-snapshot

@@ -1,22 +1,22 @@
-CurtaTest:testAddPuzzle() (gas: 296517)
-CurtaTest:testAddPuzzleAuthorshipTokenOwnership() (gas: 198598)
-CurtaTest:testAuthorshipTokenMarkedUsed() (gas: 291328)
-CurtaTest:testCheckDeployAddresses() (gas: 11329)
-CurtaTest:testFirstBloodMintsAuthorshipToken() (gas: 420454)
-CurtaTest:testFirstSolveTimestampOnlySetOnFirstBlood(uint40) (runs: 256, μ: 528810, ~: 528809)
-CurtaTest:testFirstSolveTimestampSetOnFirstBlood(uint40) (runs: 256, μ: 415543, ~: 415543)
-CurtaTest:testMintFlagFromSolve() (gas: 417183)
-CurtaTest:testPhase1PaymentPaidOutToAuthor(uint256) (runs: 256, μ: 505195, ~: 505195)
-CurtaTest:testPhase2PaymentPaidOutToAuthor(uint256) (runs: 256, μ: 505254, ~: 505254)
-CurtaTest:testPhase2RequireETH(uint256) (runs: 256, μ: 495758, ~: 495822)
-CurtaTest:testPlayerMarkedAsSolved() (gas: 416169)
-CurtaTest:testSetPuzzleTokenRenderer() (gas: 614180)
-CurtaTest:testSolve() (gas: 617756)
-CurtaTest:testSolveCountersUpdated() (gas: 586420)
+CurtaTest:testAddPuzzle() (gas: 296605)
+CurtaTest:testAddPuzzleAuthorshipTokenOwnership() (gas: 198686)
+CurtaTest:testAuthorshipTokenMarkedUsed() (gas: 291416)
+CurtaTest:testCheckDeployAddresses() (gas: 11307)
+CurtaTest:testFirstBloodMintsAuthorshipToken() (gas: 420696)
+CurtaTest:testFirstSolveTimestampOnlySetOnFirstBlood(uint40) (runs: 256, μ: 528876, ~: 528875)
+CurtaTest:testFirstSolveTimestampSetOnFirstBlood(uint40) (runs: 256, μ: 415609, ~: 415609)
+CurtaTest:testMintFlagFromSolve() (gas: 417249)
+CurtaTest:testPhase1PaymentPaidOutToAuthor(uint256) (runs: 256, μ: 505261, ~: 505261)
+CurtaTest:testPhase2PaymentPaidOutToAuthor(uint256) (runs: 256, μ: 505320, ~: 505320)
+CurtaTest:testPhase2RequireETH(uint256) (runs: 256, μ: 495824, ~: 495888)
+CurtaTest:testPlayerMarkedAsSolved() (gas: 416235)
+CurtaTest:testSetPuzzleTokenRenderer() (gas: 614357)
+CurtaTest:testSolve() (gas: 617866)
+CurtaTest:testSolveCountersUpdated() (gas: 586486)
 CurtaTest:testSolveNonExistantPuzzle(uint32) (runs: 256, μ: 13735, ~: 13735)
-CurtaTest:testSolvePuzzleTwice() (gas: 415418)
-CurtaTest:testSubmitDuringPhase3(uint40) (runs: 256, μ: 442037, ~: 442037)
-CurtaTest:testSubmitIncorrectSolution(uint256) (runs: 256, μ: 295903, ~: 295903)
-CurtaTest:testUnauthorizedSetPuzzleTokenRenderer() (gas: 586586)
-CurtaTest:testUseAuthorshipTokenTwice() (gas: 408905)
+CurtaTest:testSolvePuzzleTwice() (gas: 415484)
+CurtaTest:testSubmitDuringPhase3(uint40) (runs: 256, μ: 442103, ~: 442103)
+CurtaTest:testSubmitIncorrectSolution(uint256) (runs: 256, μ: 295991, ~: 295991)
+CurtaTest:testUnauthorizedSetPuzzleTokenRenderer() (gas: 586763)
+CurtaTest:testUseAuthorshipTokenTwice() (gas: 409103)
 OptimizationsTest:testFuzzComputePhaseFromTimestampBranchlessOptimization(uint40,uint40) (runs: 256, μ: 3538, ~: 3537)

src/AuthorshipToken.sol

@@ -1,10 +1,24 @@
 // SPDX-License-Identifier: MIT
 pragma solidity ^0.8.17;
 
+import { Owned } from "solmate/auth/Owned.sol";
 import { ERC721 } from "solmate/tokens/ERC721.sol";
+import { LibString } from "solmate/utils/LibString.sol";
 import { MerkleProofLib } from "solmate/utils/MerkleProofLib.sol";
 
-contract AuthorshipToken is ERC721 {
+import { ICurta } from "@/interfaces/ICurta.sol";
+import { Base64 } from "@/utils/Base64.sol";
+
+/// @title AuthorshipToken
+contract AuthorshipToken is ERC721, Owned {
+    // -------------------------------------------------------------------------
+    // Constants
+    // -------------------------------------------------------------------------
+
+    /// @notice The number of seconds an additional token is made available for
+    /// minting by the author.
+    uint256 constant ISSUE_LENGTH = 1 days;
+
     // -------------------------------------------------------------------------
     // Errors
     // -------------------------------------------------------------------------
@@ -16,16 +30,32 @@ contract AuthorshipToken is ERC721 {
     /// @notice Emitted if a merkle proof is invalid.
     error InvalidProof();
 
+    /// @notice Emitted when there are no tokens available to claim.
+    error NoTokensAvailable();
+
+    /// @notice Emitted when `msg.sender` is not authorized.
+    error Unauthorized();
+
     // -------------------------------------------------------------------------
-    // Storage
+    // Immutable Storage
     // -------------------------------------------------------------------------
 
     /// @notice The Curta / Flags contract.
     address public immutable curta;
 
-    /// @notice Merkle root of mint mintlist.
+    /// @notice Merkle root of addresses on the mintlist.
     bytes32 public immutable merkleRoot;
 
+    /// @notice The timestamp of when the contract was deployed.
+    uint256 public immutable deployTimestamp;
+
+    // -------------------------------------------------------------------------
+    // Storage
+    // -------------------------------------------------------------------------
+
+    /// @notice The number of tokens that have been claimed by the owner.
+    uint256 public numClaimedByOwner;
+
     /// @notice The total supply of tokens.
     uint256 public totalSupply;
 
@@ -37,15 +67,24 @@ contract AuthorshipToken is ERC721 {
     // Constructor
     // -------------------------------------------------------------------------
 
-    constructor(address _curta, bytes32 _merkleRoot) ERC721("Authorship Token", "AUTH") {
+    /// @param _curta The Curta / Flags contract.
+    /// @param _merkleRoot Merkle root of addresses on the mintlist.
+    constructor(address _curta, bytes32 _merkleRoot)
+        ERC721("Authorship Token", "AUTH")
+        Owned(msg.sender)
+    {
         curta = _curta;
         merkleRoot = _merkleRoot;
+        deployTimestamp = block.timestamp;
     }
 
     // -------------------------------------------------------------------------
     // Functions
     // -------------------------------------------------------------------------
 
+    /// @notice Mints a token to `msg.sender` if the merkle proof is valid, and
+    /// `msg.sender` has not claimed a token yet.
+    /// @param _proof The merkle proof.
     function mint(bytes32[] calldata _proof) external {
         // Revert if the user has already claimed.
         if (hasClaimed[msg.sender]) revert AlreadyClaimed(msg.sender);
@@ -60,15 +99,40 @@ contract AuthorshipToken is ERC721 {
 
         unchecked {
             uint256 tokenId = ++totalSupply;
+
             _mint(msg.sender, tokenId);
         }
     }
 
+    /// @notice Mints a token to `_to`.
+    /// @dev Only the Curta contract can call this function.
+    /// @param _to The address to mint the token to.
     function curtaMint(address _to) external {
-        require(msg.sender == curta, "Only Curta can mint");
+        // Revert if the sender is not the Curta contract.
+        if (msg.sender != curta) revert Unauthorized();
+
+        unchecked {
+            uint256 tokenId = ++totalSupply;
+
+            _mint(_to, tokenId);
+        }
+    }
 
+    /// @notice Mints a token to `_to`.
+    /// @dev Only the owner can call this function. The owner may claim a token
+    /// every `ISSUE_LENGTH` seconds.
+    /// @param _to The address to mint the token to.
+    function ownerMint(address _to) external onlyOwner {
         unchecked {
+            uint256 numIssued = (block.timestamp - deployTimestamp) / ISSUE_LENGTH;
+            uint256 numMintable = numIssued - numClaimedByOwner++;
+
+            // Revert if no tokens are available to mint.
+            if (numMintable == 0) revert NoTokensAvailable();
+
+            // Mint token
             uint256 tokenId = ++totalSupply;
+
             _mint(_to, tokenId);
         }
     }
@@ -77,7 +141,27 @@ contract AuthorshipToken is ERC721 {
     // ERC721Metadata
     // -------------------------------------------------------------------------
 
+    /// @inheritdoc ERC721
     function tokenURI(uint256 _tokenId) public view override returns (string memory) {
-        return "";
+        return string.concat(
+            "data:application/json;base64,",
+            Base64.encode(
+                abi.encodePacked(
+                    '{"name":"Authorship Token #',
+                    LibString.toString(_tokenId),
+                    '","description":"Token that grants user permission to add a puzzle to Curta",',
+                    '"image_data":"data:image/svg+xml;base64,',
+                    // TODO: Update this to use the actual SVG
+                    Base64.encode(
+                        abi.encodePacked(
+                            '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><rect width="100%" height="100%"/><text x="8" y="40" style="fill:#fff;font-family:serif;font-size:32px">Authorship Token</text></svg>'
+                        )
+                    ),
+                    '","attributes":[{"trait_type":"Used","value":',
+                    ICurta(curta).hasUsedAuthorshipToken(_tokenId) ? "true" : "false",
+                    "]}"
+                )
+            )
+        );
     }
 }

src/Curta.sol

@@ -7,6 +7,7 @@ import { FlagsERC721 } from "./FlagsERC721.sol";
 import { ICurta } from "@/interfaces/ICurta.sol";
 import { IPuzzle } from "@/interfaces/IPuzzle.sol";
 import { ITokenRenderer } from "@/interfaces/ITokenRenderer.sol";
+import { Base64 } from "@/utils/Base64.sol";
 
 // .===========================================================================.
 // | The Curta is a hand-held mechanical calculator designed by Curt           |

test/Curta.t.sol

@@ -482,7 +482,7 @@ contract CurtaTest is Test {
         }
 
         vm.warp(firstBloodTimestamp + 0.5 days);
-    
+
         // `address(0xBEEF)` has not solved the puzzle yet.
         assertTrue(!curta.hasSolvedPuzzle(address(0xBEEF), 1));