init commit

.babelrc

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+{
+  "presets": ["@babel/preset-env"]
+}

.env.sample

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+INFURA_API_KEY="infura_api_key"
+MNEMONIC="twelve words mnemonic"
+ETHERSCAN_API_KEY="etherscan_api_key"
+PRIVATE_KEY="privete_key_starting_with_0x"
+REPORT_GAS=true

.eslintignore

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+node_modules
+coverage
+artifacts
+build
+docs

.eslintrc.json

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+{
+  "env": {
+    "browser": true,
+    "es6": true
+  },
+  "extends": ["airbnb-base"],
+  "globals": {
+    "Atomics": "readonly",
+    "SharedArrayBuffer": "readonly"
+  },
+  "parserOptions": {
+    "ecmaVersion": 2018,
+    "sourceType": "module"
+  },
+  "rules": {
+    "indent": ["error", 2],
+    "no-undef": "off",
+    "prefer-const": "off",
+    "no-console": "off",
+    "linebreak-style": "off",
+    "operator-linebreak": "off",
+    "object-curly-newline": "off",
+    "arrow-body-style": "off"
+  }
+}

.gitattributes

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+*.sol linguist-language=Solidity

.github/workflows/build.yml

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+name: build
+on: push
+
+jobs:
+  coverage:
+    name: build
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v2
+      - name: setup-node
+        uses: actions/setup-node@v1
+        with:
+          node-version: "10.x"
+      - name: install
+        run: npm ci
+      - name: build
+        run: npm run compile
+      - name: upload artifacts
+        uses: actions/upload-artifact@v1
+        with:
+          name: artifacts
+          path: artifacts/contracts

.github/workflows/coverage.yml

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+name: coverage
+on: push
+
+jobs:
+  coverage:
+    name: coverage
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v2
+      - name: setup-node
+        uses: actions/setup-node@v1
+        with:
+          node-version: "10.x"
+      - name: install
+        run: npm ci
+      - name: test+coverage
+        run: npm run coverage
+        env:
+          INFURA_API_KEY: ${{ secrets.INFURA_API_KEY }}
+      - name: upload artifacts
+        uses: actions/upload-artifact@v1
+        if: always()
+        with:
+          name: coverage
+          path: coverage

.github/workflows/lint.yml

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+name: lint
+on: push
+
+jobs:
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v2
+      - name: setup-node
+        uses: actions/setup-node@v1
+        with:
+          node-version: "10.x"
+      - name: install
+        run: npm ci
+      - name: build
+        run: npm run compile
+      - name: lint
+        run: npm run lint

.github/workflows/test.yml

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+name: test
+on: push
+
+jobs:
+  coverage:
+    name: test
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v2
+      - name: setup-node
+        uses: actions/setup-node@v1
+        with:
+          node-version: "10.x"
+      - name: install
+        run: npm ci
+      - name: test
+        run: npm run test
+        env:
+          INFURA_API_KEY: ${{ secrets.INFURA_API_KEY }}

.gitignore

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+node_modules
+.env
+cache
+artifacts
+.DS_Store
+coverage
+coverage.json

.husky/.gitignore

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+_

.husky/pre-commit

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+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+npx --no lint-staged

.prettierignore

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+node_modules
+coverage
+artifacts
+build
+cache

.prettierrc.json

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+{
+  "overrides": [
+    {
+      "files": "*.sol",
+      "options": {
+        "printWidth": 99,
+        "tabWidth": 4,
+        "useTabs": false,
+        "singleQuote": false,
+        "bracketSpacing": true,
+        "explicitTypes": "always",
+        "trailingComma": "none"
+      }
+    },
+    {
+      "files": "*.js",
+      "options": {
+        "printWidth": 99,
+        "tabWidth": 2,
+        "useTabs": false,
+        "singleQuote": true,
+        "bracketSpacing": true,
+        "explicitTypes": "always",
+        "trailingComma": "all"
+      }
+    }
+  ]
+}

.solcover.js

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+require('dotenv').config();
+
+module.exports = {
+  skipFiles: [],
+  providerOptions: {
+    accounts: [
+      {
+        secretKey: `${process.env.PRIVATE_KEY}`,
+        balance: '0x56BC75E2D63100000',
+      },
+      {
+        secretKey: '0xbe5d6e330de6c44c137f8fb45fa44dada079fb8bc29d290cadd8f882035dd189',
+        balance: '0x56BC75E2D63100000',
+      },
+      {
+        secretKey: '0x473acc210edb35998de9dc65495bafbf0a3804950482cd2b48af7bba7046d7de',
+        balance: '0x56BC75E2D63100000',
+      },
+      {
+        secretKey: '0x3893470a6bcee2e2652eea6dddd6c677925453529313bddd86ce61fd29e06313',
+        balance: '0x56BC75E2D63100000',
+      },
+      {
+        secretKey: '0x8bcaeea38f9d2ecb9719dc31b7dd8ef4d3a7c27fed7d2a5e29c15677f1d70a2d',
+        balance: '0x56BC75E2D63100000',
+      },
+      {
+        secretKey: '0x159496cd9b1532e326dbb1759fb57dfca6722568690713032bab3b7a0aaf0fbd',
+        balance: '0x56BC75E2D63100000',
+      },
+      {
+        secretKey: '0x3ce40f93372672923bda9fc1e8581428d02510c09418d9ebb8182b232234446d',
+        balance: '0x56BC75E2D63100000',
+      },
+      {
+        secretKey: '0x92070709cd34955ec8aaf14b1b4cd8197ee4743189391072629538e52ef18014',
+        balance: '0x56BC75E2D63100000',
+      },
+      {
+        secretKey: '0x0af73f5c72996143627524d0b22134e66d47e594b9598a94ef94ab1b781e7460',
+        balance: '0x56BC75E2D63100000',
+      },
+      {
+        secretKey: '0x0272de3730704f4150e3c691cb2538ff22146affb578a845399a5def59f24e17',
+        balance: '0x56BC75E2D63100000',
+      },
+    ],
+    fork: `https://mainnet.infura.io/v3/${process.env.INFURA_API_KEY}`,
+    gasLimit: 0x1fffffffffffff,
+  },
+  mocha: {
+    enableTimeouts: false,
+  },
+};

.solhint.json

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+{
+  "extends": "solhint:all",
+  "plugins": ["prettier"],
+  "rules": {
+    "mark-callable-contracts": ["off"],
+    "reason-string": ["error", { "maxLength": 50 }],
+    "function-max-lines": ["error", 99],
+    "compiler-version": ["off"],
+    "private-vars-leading-underscore": ["off"],
+    "func-visibility": [
+      "warn",
+      {
+        "ignoreConstructors": true
+      }
+    ],
+    "prettier/prettier": "warn",
+    "comprehensive-interface": ["off"]
+  }
+}

.solhintignore

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+node_modules

LICENSE

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+MIT License
+
+Copyright (c) 2021 Igor Sobolev
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# zerion-genesis-nft
+
+This is a project with a simple NFT token.
+
+The main functionality of this token is `claim()` function.
+It can be called once per EOA (Ethereum address) and only within a deadline (5 days after the deployment).
+For every account, `call()` function 'randomly' mints 1 of 10 NFT tokens with the following probabilities:
+
+0. Legendary – 0.1%
+1. Rare – 5.1%
+2. Rare – 5.1%
+3. Rare – 5.1%
+4. Common – 14.1%
+5. Common – 14.1%
+6. Common – 14.1%
+7. Common – 14.1%
+8. Common – 14.1%
+9. Common – 14.1%
+
+The mainnet address is the following: [0x0000000000000000000000000000000000000000](https://etherscan.io/address/0x0000000000000000000000000000000000000000#code).
+
+Call `claim()` function within a deadline and try your luck!

contracts/IZerionGenesisNFT.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity =0.8.6;
+
+import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
+
+interface IZerionGenesisNFT is IERC1155 {
+    /// @notice Claims a random Zerion NFT for the `msg.sender`.
+    /// @dev Can be called only by an EOA.
+    /// @dev Can be called once per account.
+    /// @dev Can be called only prior to the deadline.
+    function claim() external;
+
+    /// @notice Shows the latest time Zerion NFTs can be claimed.
+    /// @return Timestamp of minting deadline.
+    function deadline() external view returns (uint256);
+
+    /// @notice Shows the rarities for Zerion NFTs.
+    /// @return Rarity for a given id, multiplied by 1000.
+    function rarity(uint256 tokenId) external view returns (uint256);
+
+    /// @notice Indicates whether the account has already claimed Zerion NFT.
+    function claimed(address account) external view returns (bool);
+
+    /// @notice Collection name.
+    function name() external view returns (string memory);
+
+    /// @notice Collection symbol.
+    function symbol() external view returns (string memory);
+
+    /// @notice Collection metadata URI.
+    function contractURI() external view returns (string memory);
+}