add AMC Score Calculator extension

extensions/amc-score-calculator/.eslintrc.json

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+{
+  "root": true,
+  "env": {
+    "es2020": true,
+    "node": true
+  },
+  "parser": "@typescript-eslint/parser",
+  "plugins": ["@typescript-eslint"],
+  "extends": ["eslint:recommended", "plugin:@typescript-eslint/recommended", "prettier"]
+}

extensions/amc-score-calculator/.prettierrc

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+{
+  "printWidth": 120,
+  "singleQuote": true
+}

extensions/amc-score-calculator/package.json

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+{
+  "name": "amc-score-calculator",
+  "title": "AMC Score Calculator",
+  "description": "Calculates AMC scores for 8, 10, and 12",
+  "icon": "command-icon.png",
+  "author": "ryanccn",
+  "license": "MIT",
+  "commands": [
+    {
+      "name": "eight",
+      "title": "AMC 8",
+      "subtitle": "",
+      "description": "Calculate AMC 8 scores",
+      "mode": "view"
+    },
+    {
+      "name": "ten",
+      "title": "AMC 10",
+      "subtitle": "",
+      "description": "Calculate AMC 10 scores",
+      "mode": "view"
+    },
+    {
+      "name": "twelve",
+      "title": "AMC 12",
+      "subtitle": "",
+      "description": "Calculate AMC 12 scores",
+      "mode": "view"
+    }
+  ],
+  "dependencies": {
+    "@raycast/api": "^1.25.0"
+  },
+  "devDependencies": {
+    "@types/node": "~16.10.0",
+    "@types/react": "^17.0.28",
+    "@typescript-eslint/eslint-plugin": "^5.0.0",
+    "@typescript-eslint/parser": "^5.0.0",
+    "eslint": "^7.32.0",
+    "eslint-config-prettier": "^8.3.0",
+    "typescript": "^4.4.3"
+  },
+  "scripts": {
+    "build": "ray build -e dist",
+    "dev": "ray develop"
+  }
+}

extensions/amc-score-calculator/src/eight.tsx

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+import Generic from './generic';
+
+export default () => {
+  return <Generic title={'AMC 8 Score Calculator'} correctValue={1} emptyValue={0} />;
+};

extensions/amc-score-calculator/src/generic.tsx

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+import { Form, ActionPanel, SubmitFormAction, showToast, ToastStyle, Detail, Icon } from '@raycast/api';
+
+interface Props {
+  title: string;
+  correctValue: number;
+  emptyValue: number;
+}
+interface Values {
+  c: string;
+  e: string;
+}
+
+const GenericCalculator = (props: Props) => {
+  const handleSubmit = (values: Values) => {
+    if (typeof values.c !== 'string' || (props.emptyValue !== 0 && typeof values.e !== 'string')) {
+      showToast(ToastStyle.Failure, 'Bad Request', "Fields aren't strings");
+      return;
+    }
+
+    const c = parseInt(values.c);
+    const e = props.emptyValue !== 0 ? parseInt(values.e) : 0;
+
+    if (isNaN(c) || isNaN(e)) {
+      showToast(ToastStyle.Failure, 'Bad Request', 'Enter numbers, please...');
+      return;
+    }
+
+    const score = c * props.correctValue + e * props.emptyValue;
+
+    showToast(ToastStyle.Success, `Your score is ${score}`, 'Good job!');
+  };
+
+  return (
+    <Form
+      actions={
+        <ActionPanel>
+          <SubmitFormAction title="Get Score" onSubmit={handleSubmit} icon={Icon.Checkmark} />
+        </ActionPanel>
+      }
+    >
+      <Form.TextField id="c" title="Correct" placeholder="Number of correct answers" />
+      {props.emptyValue !== 0 && <Form.TextField id="e" title="Empty" placeholder="Number of questions left empty" />}
+    </Form>
+  );
+};
+
+export default GenericCalculator;

extensions/amc-score-calculator/src/ten.tsx

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+import Generic from './generic';
+
+export default () => {
+  return <Generic title={'AMC 10 Score Calculator'} correctValue={6} emptyValue={1.5} />;
+};

extensions/amc-score-calculator/src/twelve.tsx

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+import Generic from './generic';
+
+export default () => {
+  return <Generic title={'AMC 12 Score Calculator'} correctValue={6} emptyValue={1.5} />;
+};

extensions/amc-score-calculator/tsconfig.json

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+{
+  "$schema": "https://json.schemastore.org/tsconfig",
+  "display": "Node 16",
+  "include": ["src/**/*"],
+  "compilerOptions": {
+    "lib": ["es2020"],
+    "module": "commonjs",
+    "target": "es2020",
+    "strict": true,
+    "isolatedModules": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "jsx": "react-jsx"
+  }
+}