first

.eslintignore

+webpack.config.js
+dist/*
+build/*
\ No newline at end of file

.eslintrc.js

+module.exports = {
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    project: 'tsconfig.json',
+    sourceType: 'module',
+  },
+  plugins: ['@typescript-eslint/eslint-plugin'],
+  extends: [
+    'plugin:@typescript-eslint/recommended',
+    'plugin:prettier/recommended',
+  ],
+  root: true,
+  env: {
+    node: true,
+    jest: true,
+  },
+  ignorePatterns: ['.eslintrc.js'],
+  rules: {
+    '@typescript-eslint/interface-name-prefix': 'off',
+    '@typescript-eslint/explicit-function-return-type': 'off',
+    '@typescript-eslint/explicit-module-boundary-types': 'off',
+    '@typescript-eslint/no-explicit-any': 'off',
+  },
+};

.gitignore

+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# Next.js build output
+.next
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and *not* Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+/build
+/output
+/dest
+/config.yaml
+.idea

.gitlab-ci.yml

+stages:
+  - build
+  - deploy
+
+variables:
+  GIT_DEPTH: "1"
+
+build:
+  stage: build
+  tags: 
+    - linux
+  script:
+    - npm ci
+    - npm run build
+  artifacts:
+    paths:
+      - dist/
+
+upload_to_minio:
+  stage: deploy
+  dependencies:
+    - build
+  tags:
+    - linux
+  script:
+    - aws s3 --endpoint=https://minio.mycard.moe:9000 sync --delete dist/ s3://nanahira/koishi-plugin/fortune
+  only:
+    - master
+
+deploy_npm:
+  stage: deploy
+  dependencies:
+    - build
+  tags:
+    - linux
+  script:
+    - apt update;apt -y install coreutils
+    - echo $NPMRC | base64 --decode > ~/.npmrc
+    - npm publish . || true
+  only:
+    - master

.npmignore

+/install-npm.sh
+.git*
+/output
+/dest
+/config.yaml
+.idea
+.dockerignore
+Dockerfile
+/src
+.eslintrc.js
+.prettierrc
+webpack.config.js
+tsconfig.json
\ No newline at end of file

.prettierrc

+{
+  "singleQuote": true,
+  "trailingComma": "all"
+}
\ No newline at end of file

LICENSE

+The MIT License (MIT)
+
+Copyright (c) 2021 Nanahira
+
+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

 # koishi-plugin-fortune
 
-Koishi 的算卦插件
\ No newline at end of file
+占卜插件，每人每天可以算一卦。
+
+本插件使用了 mt19937 算法来保证每天每人占卜结果确定。
+
+## 安装
+
+### npm
+
+```bash
+npm install koishi-plugin-fortune
+```
+
+### 直接安装
+
+在 https://cdn02.moecube.com:444/nanahira/koishi-plugin/fortune/index.js 下载，并配置 `koishi.config.js` 。
+
+```js
+module.exports = {
+    plugins: { 
+        "/path/to/fortune/index.js": {
+            adminContext: (ctx) => ctx.private(),
+              header: '今日 ({date}) 的占卜结果:\n',
+              masterKey: 'my-master-key',
+              results: ['开心', '不开心']
+        }
+    }
+}
+```
+
+上例的返回结果为
+
+```
+今日 (2021-10-2) 的占卜结果:
+不开心
+```
+
+## 配置
+
+```ts
+export interface Config {
+  header?: string;
+  masterKey?: string;
+  results: string[];
+}
+```
+
+### 说明
+
+* `header` 占卜结果的标题，会出现在结果首部。
+
+* `masterKey` 占卜随机密钥。占卜结果会由 **日期** **用户ID** **masterKey** 唯一确定。
+
+* `results` 所有可能的占卜结果。
+
+## 命令
+
+* `fortune` 进行占卜。

install-npm.sh

+#!/bin/bash
+npm install --save \
+	source-map-support
+
+npm install --save-dev \
+	lodash \
+	@types/node \
+	@types/lodash \
+	typescript \
+	'@typescript-eslint/eslint-plugin@^4.28.2' \
+	'@typescript-eslint/parser@^4.28.2 '\
+	'eslint@^7.30.0' \
+	'eslint-config-prettier@^8.3.0' \
+	'eslint-plugin-prettier@^3.4.0' \
+	prettier \
+	raw-loader \
+	ts-loader \
+	webpack \
+	webpack-cli \
+	koishi-core

package.json

+{
+  "name": "koishi-plugin-fortune",
+  "version": "1.0.0",
+  "description": "Koishi 的算卦插件",
+  "main": "dist/index.js",
+  "typings": "dist/src/index.d.ts",
+  "scripts": {
+    "lint": "eslint --fix .",
+    "build": "webpack"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://code.mycard.moe/nanahira/koishi-plugin-fortune.git"
+  },
+  "author": "Nanahira",
+  "license": "MIT",
+  "keywords": [
+    "Koishi.js",
+    "qqbot",
+    "cqhttp",
+    "onebot"
+  ],
+  "bugs": {
+    "url": "https://code.mycard.moe/nanahira/koishi-plugin-fortune/issues"
+  },
+  "homepage": "https://code.mycard.moe/nanahira/koishi-plugin-fortune",
+  "dependencies": {
+    "source-map-support": "^0.5.20"
+  },
+  "peerDependencies": {
+    "koishi-core": "^3.14.2"
+  },
+  "devDependencies": {
+    "@stdlib/random-base-mt19937": "^0.0.5",
+    "@types/node": "^16.10.2",
+    "@typescript-eslint/eslint-plugin": "^4.32.0",
+    "@typescript-eslint/parser": "^4.32.0",
+    "eslint": "^7.32.0",
+    "eslint-config-prettier": "^8.3.0",
+    "eslint-plugin-prettier": "^3.4.1",
+    "koishi-core": "^3.14.2",
+    "moment": "^2.29.1",
+    "prettier": "^2.4.1",
+    "raw-loader": "^4.0.2",
+    "ts-loader": "^9.2.6",
+    "typescript": "^4.4.3",
+    "webpack": "^5.56.0",
+    "webpack-cli": "^4.8.0"
+  }
+}

src/index.ts

+import 'source-map-support/register';
+import { Context } from 'koishi-core';
+import { Config, MyPlugin } from './plugin';
+export { Config } from './plugin';
+
+export const name = 'fortune';
+export function apply(ctx: Context, config: Config) {
+  ctx.plugin(new MyPlugin(), config);
+}

src/plugin.ts

+import 'source-map-support/register';
+import { Context } from 'koishi-core';
+import { pickOne } from './random';
+import moment from 'moment';
+
+export interface Config {
+  header?: string;
+  masterKey?: string;
+  results: string[];
+}
+
+export class MyPlugin {
+  config: Config;
+  ctx: Context;
+  name = 'fortune-main';
+  private getResult(userId: string) {
+    if (!userId) {
+      return '获取用户信息失败。';
+    }
+    let result = this.config.header
+      ? this.config.header.replace('{date}', moment().format('YYYY-MM-DD'))
+      : '';
+    result += pickOne(
+      this.config.results,
+      userId.toString(),
+      this.config.masterKey,
+    );
+    return result;
+  }
+  apply(ctx: Context, config: Config) {
+    this.ctx = ctx;
+    this.config = config;
+    ctx
+      .command('fortune', '进行占卜')
+      .usage('占卜结果每天固定。')
+      .action((argv) => {
+        return this.getResult(argv.session.userId);
+      });
+  }
+}

src/random.ts

+import mt19937 from '@stdlib/random-base-mt19937';
+import { createHash } from 'crypto';
+import moment from 'moment';
+
+export function getTodayBuffer() {
+  const today = moment();
+  today.set('hour', 0);
+  today.set('minute', 0);
+  today.set('second', 0);
+  today.set('millisecond', 0);
+  const buf = Buffer.allocUnsafe(8);
+  buf.writeBigUInt64LE(BigInt(today.unix()));
+  return buf;
+}
+
+export function getRandomState(id: string, masterKey?: string) {
+  const hash = createHash('md5').update(id).update(getTodayBuffer());
+  if (masterKey) {
+    hash.update(masterKey);
+  }
+  return hash.digest().readUInt32LE(0);
+}
+
+export function getRandomValue(id: string, masterKey?: string) {
+  const mt = mt19937.factory({ seed: getRandomState(id, masterKey) });
+  return mt();
+}
+
+export function pickOne<T>(arr: T[], id: string, masterKey?: string): T {
+  if (!arr.length) {
+    return undefined;
+  }
+  if (arr.length === 1) {
+    return arr[0];
+  }
+  const index = getRandomValue(id, masterKey) % arr.length;
+  return arr[index];
+}

test/test-random.ts

+import { getRandomValue } from '../src/random';
+
+console.log(getRandomValue('1112222', '222'));

tsconfig.json

+{
+	"compilerOptions": {
+		"outDir": "dist",
+		"module": "commonjs",
+		"target": "es2021",
+		"esModuleInterop": true,
+		"emitDecoratorMetadata": true,
+		"experimentalDecorators": true,
+		"declaration": true,
+		"sourceMap": true
+	},
+	"compileOnSave": true,
+	"allowJs": true,
+	"include": [
+		"*.ts",
+		"src/**/*.ts",
+		"test/**/*.ts"
+	]
+}

webpack.config.js

+const path = require("path");
+
+module.exports = {
+  entry: "./src/index.ts",
+  mode: "production",
+  target: "node",
+  devtool: "source-map",
+  module: {
+    rules: [
+      {
+        test: /\.tsx?$/,
+        use: "ts-loader",
+        exclude: /node_modules/,
+      },
+      { test: /\.mustache$/, use: "raw-loader" },
+    ],
+  },
+  resolve: {
+    extensions: [".tsx", ".ts", ".js"],
+  },
+  output: {
+    filename: "index.js",
+    library: {
+      type: "commonjs",
+    },
+    path: path.resolve(__dirname, "dist"),
+  },
+  externals: {
+    'koishi-core': 'koishi-core',
+    'koishi': 'koishi',
+  }
+};