// ESLint flat config codifying the style already in use across the workspace's
// Vue projects: tabs, single quotes, `if(x)` with no space before the paren,
// and Hungarian-ish prefixes on locals. Goal is catching real mistakes, not
// importing an external style guide.
import js from '@eslint/js';
import vue from 'eslint-plugin-vue';
import globals from 'globals';

export default [
	js.configs.recommended,
	...vue.configs['flat/essential'],
	{
		languageOptions: {
			ecmaVersion: 'latest',
			sourceType: 'module',
			globals: {
				...globals.browser
			}
		},
		rules: {
			//Indentation: tabs everywhere. Left manual - the rule throws too
			//many false positives on wrapped Vue template attributes.
			'indent': 'off',
			'no-tabs': 'off',

			'quotes': ['warn', 'single', {avoidEscape: true, allowTemplateLiterals: true}],

			//Semicolons everywhere except the top-level `export default {...}`
			//in Vue SFCs, which ESLint cannot carve out - hence 'warn'.
			'semi': ['warn', 'always'],

			//Loose and strict equality are both used on purpose (numeric
			//strings come back from the API) - do not force either.
			'eqeqeq': 'off',

			'space-before-function-paren': ['warn', 'never'],
			'keyword-spacing': ['warn', {
				after: true,
				overrides: {
					if: {after: false},
					for: {after: false},
					while: {after: false},
					switch: {after: false},
					catch: {after: false}
				}
			}],
			'space-before-blocks': ['warn', 'always'],

			//Object literals and destructuring use `{a, b}`, but imports use
			//`import { x } from 'y'` - one rule cannot express both.
			'object-curly-spacing': 'off',
			'array-bracket-spacing': ['warn', 'never'],

			'no-unused-vars': ['warn', {argsIgnorePattern: '^_', ignoreRestSiblings: true}],
			'no-undef': 'error',
			'no-var': 'error',
			'prefer-const': 'off',

			'vue/component-name-in-template-casing': 'off',
			'vue/multi-word-component-names': 'off',
			'vue/attribute-hyphenation': 'off',
			'vue/require-default-prop': 'off',
			'vue/no-v-html': 'error'
		}
	},
	{
		ignores: ['public/**', 'vendor/**', 'node_modules/**']
	}
];