import { promises as fs, existsSync } from 'fs';
import { bold, cyan, red, underline, yellow } from '../picocolors';
import path from 'path';
import findUp from 'next/dist/compiled/find-up';
import semver from 'next/dist/compiled/semver';
import * as CommentJson from 'next/dist/compiled/comment-json';
import { formatResults } from './customFormatter';
import { writeDefaultConfig } from './writeDefaultConfig';
import { hasEslintConfiguration } from './hasEslintConfiguration';
import { writeOutputFile } from './writeOutputFile';
import { findPagesDir } from '../find-pages-dir';
import { installDependencies } from '../install-dependencies';
import { hasNecessaryDependencies } from '../has-necessary-dependencies';
import * as Log from '../../build/output/log';
import isError, { getProperError } from '../is-error';
import { getPkgManager } from '../helpers/get-pkg-manager';
import { getESLintStrictValue, getESLintPromptValues } from './getESLintPromptValues';
// 0 is off, 1 is warn, 2 is error. See https://eslint.org/docs/user-guide/configuring/rules#configuring-rules
const VALID_SEVERITY = [
    'off',
    'warn',
    'error'
];
function isValidSeverity(severity) {
    return VALID_SEVERITY.includes(severity);
}
const requiredPackages = [
    {
        file: 'eslint',
        pkg: 'eslint',
        exportsRestrict: false
    },
    {
        file: 'eslint-config-next',
        pkg: 'eslint-config-next',
        exportsRestrict: false
    }
];
async function cliPrompt(cwd) {
    console.log(bold(`${cyan('?')} How would you like to configure ESLint? https://nextjs.org/docs/app/api-reference/config/eslint`));
    try {
        const cliSelect = (await Promise.resolve(require('next/dist/compiled/cli-select'))).default;
        const { value } = await cliSelect({
            values: await getESLintPromptValues(cwd),
            valueRenderer: ({ title, recommended }, selected)=>{
                const name = selected ? bold(underline(cyan(title))) : title;
                return name + (recommended ? bold(yellow(' (recommended)')) : '');
            },
            selected: cyan('❯ '),
            unselected: '  '
        });
        return {
            config: (value == null ? void 0 : value.config) ?? null
        };
    } catch  {
        return {
            config: null
        };
    }
}
async function lint(baseDir, lintDirs, eslintrcFile, pkgJsonPath, { lintDuringBuild = false, eslintOptions = null, reportErrorsOnly = false, maxWarnings = -1, formatter = null, outputFile = null }) {
    try {
        var _mod_CLIEngine, _ESLint_getErrorResults;
        // Load ESLint after we're sure it exists:
        const deps = await hasNecessaryDependencies(baseDir, requiredPackages);
        const packageManager = getPkgManager(baseDir);
        if (deps.missing.some((dep)=>dep.pkg === 'eslint')) {
            Log.error(`ESLint must be installed${lintDuringBuild ? ' in order to run during builds:' : ':'} ${bold(cyan((packageManager === 'yarn' ? 'yarn add --dev' : packageManager === 'pnpm' ? 'pnpm install --save-dev' : 'npm install --save-dev') + ' eslint'))}`);
            return null;
        }
        const mod = await Promise.resolve(require(deps.resolved.get('eslint')));
        // If V9 config was found, use flat config, or else use legacy.
        const useFlatConfig = eslintrcFile ? path.basename(eslintrcFile).startsWith('eslint.config.') : false;
        let ESLint;
        // loadESLint is >= 8.57.0
        // PR https://github.com/eslint/eslint/pull/18098
        // Release https://github.com/eslint/eslint/releases/tag/v8.57.0
        if ('loadESLint' in mod) {
            // By default, configType is `flat`. If `useFlatConfig` is false, the return value is `LegacyESLint`.
            // https://github.com/eslint/eslint/blob/1def4cdfab1f067c5089df8b36242cdf912b0eb6/lib/types/index.d.ts#L1609-L1613
            ESLint = await mod.loadESLint({
                useFlatConfig
            });
        } else {
            // eslint < 8.57.0, use legacy ESLint
            ESLint = mod.ESLint;
        }
        let eslintVersion = (ESLint == null ? void 0 : ESLint.version) ?? ((_mod_CLIEngine = mod.CLIEngine) == null ? void 0 : _mod_CLIEngine.version);
        if (!eslintVersion || semver.lt(eslintVersion, '7.0.0')) {
            return `${red('error')} - Your project has an older version of ESLint installed${eslintVersion ? ' (' + eslintVersion + ')' : ''}. Please upgrade to ESLint version 7 or above`;
        }
        let options = {
            useEslintrc: true,
            baseConfig: {},
            errorOnUnmatchedPattern: false,
            extensions: [
                '.js',
                '.jsx',
                '.ts',
                '.tsx'
            ],
            cache: true,
            ...eslintOptions
        };
        if (semver.gte(eslintVersion, '9.0.0') && useFlatConfig) {
            for (const option of [
                'useEslintrc',
                'extensions',
                'ignorePath',
                'reportUnusedDisableDirectives',
                'resolvePluginsRelativeTo',
                'rulePaths',
                'inlineConfig',
                'maxWarnings'
            ]){
                if (option in options) {
                    delete options[option];
                }
            }
        }
        let eslint = new ESLint(options);
        let nextEslintPluginIsEnabled = false;
        const nextRulesEnabled = new Map();
        for (const configFile of [
            eslintrcFile,
            pkgJsonPath
        ]){
            if (!configFile) continue;
            const completeConfig = await eslint.calculateConfigForFile(configFile);
            if (!completeConfig) continue;
            const plugins = completeConfig.plugins;
            const hasNextPlugin = // in ESLint < 9, `plugins` value is string[]
            Array.isArray(plugins) ? plugins.includes('@next/next') : '@next/next' in plugins;
            if (hasNextPlugin) {
                nextEslintPluginIsEnabled = true;
                for (const [name, [severity]] of Object.entries(completeConfig.rules)){
                    if (!name.startsWith('@next/next/')) {
                        continue;
                    }
                    if (typeof severity === 'number' && severity >= 0 && severity < VALID_SEVERITY.length) {
                        nextRulesEnabled.set(name, VALID_SEVERITY[severity]);
                    } else if (typeof severity === 'string' && isValidSeverity(severity)) {
                        nextRulesEnabled.set(name, severity);
                    }
                }
                break;
            }
        }
        const pagesDir = findPagesDir(baseDir).pagesDir;
        const pagesDirRules = pagesDir ? [
            '@next/next/no-html-link-for-pages'
        ] : [];
        if (nextEslintPluginIsEnabled) {
            let updatedPagesDir = false;
            for (const rule of pagesDirRules){
                var _options_baseConfig_rules, _options_baseConfig_rules1;
                if (!((_options_baseConfig_rules = options.baseConfig.rules) == null ? void 0 : _options_baseConfig_rules[rule]) && !((_options_baseConfig_rules1 = options.baseConfig.rules) == null ? void 0 : _options_baseConfig_rules1[rule.replace('@next/next', '@next/babel-plugin-next')])) {
                    if (!options.baseConfig.rules) {
                        options.baseConfig.rules = {};
                    }
                    options.baseConfig.rules[rule] = [
                        1,
                        pagesDir
                    ];
                    updatedPagesDir = true;
                }
            }
            if (updatedPagesDir) {
                eslint = new ESLint(options);
            }
        } else {
            Log.warn('');
            Log.warn('The Next.js plugin was not detected in your ESLint configuration. See https://nextjs.org/docs/app/api-reference/config/eslint#migrating-existing-config');
        }
        const lintStart = process.hrtime();
        let results = await eslint.lintFiles(lintDirs);
        let selectedFormatter = null;
        if (options.fix) await ESLint.outputFixes(results);
        if (reportErrorsOnly) results = await ESLint.getErrorResults(results) // Only return errors if --quiet flag is used
        ;
        if (formatter) selectedFormatter = await eslint.loadFormatter(formatter);
        const formattedResult = await formatResults(baseDir, results, selectedFormatter == null ? void 0 : selectedFormatter.format);
        const lintEnd = process.hrtime(lintStart);
        const totalWarnings = results.reduce((sum, file)=>sum + file.warningCount, 0);
        if (outputFile) await writeOutputFile(outputFile, formattedResult.output);
        return {
            output: formattedResult.outputWithMessages,
            isError: ((_ESLint_getErrorResults = ESLint.getErrorResults(results)) == null ? void 0 : _ESLint_getErrorResults.length) > 0 || maxWarnings >= 0 && totalWarnings > maxWarnings,
            eventInfo: {
                durationInSeconds: lintEnd[0],
                eslintVersion: eslintVersion,
                lintedFilesCount: results.length,
                lintFix: !!options.fix,
                nextEslintPluginVersion: nextEslintPluginIsEnabled && deps.resolved.has('eslint-config-next') ? require(path.join(path.dirname(deps.resolved.get('eslint-config-next')), 'package.json')).version : null,
                nextEslintPluginErrorsCount: formattedResult.totalNextPluginErrorCount,
                nextEslintPluginWarningsCount: formattedResult.totalNextPluginWarningCount,
                nextRulesEnabled: Object.fromEntries(nextRulesEnabled)
            }
        };
    } catch (err) {
        if (lintDuringBuild) {
            Log.error(`ESLint: ${isError(err) && err.message ? err.message.replace(/\n/g, ' ') : err}`);
            return null;
        } else {
            throw getProperError(err);
        }
    }
}
export async function runLintCheck(baseDir, lintDirs, opts) {
    const { lintDuringBuild = false, eslintOptions = null, reportErrorsOnly = false, maxWarnings = -1, formatter = null, outputFile = null, strict = false } = opts;
    try {
        // Find user's .eslintrc file
        // See: https://eslint.org/docs/user-guide/configuring/configuration-files#configuration-file-formats
        const eslintrcFile = await findUp([
            // eslint v9
            'eslint.config.js',
            'eslint.config.mjs',
            'eslint.config.cjs',
            // TS extensions require to install a separate package `jiti`.
            // https://eslint.org/docs/latest/use/configure/configuration-files#typescript-configuration-files
            'eslint.config.ts',
            'eslint.config.mts',
            'eslint.config.cts',
            // eslint <= v8
            '.eslintrc.js',
            '.eslintrc.cjs',
            '.eslintrc.yaml',
            '.eslintrc.yml',
            '.eslintrc.json',
            '.eslintrc'
        ], {
            cwd: baseDir
        }) ?? null;
        const pkgJsonPath = await findUp('package.json', {
            cwd: baseDir
        }) ?? null;
        let packageJsonConfig = null;
        if (pkgJsonPath) {
            const pkgJsonContent = await fs.readFile(pkgJsonPath, {
                encoding: 'utf8'
            });
            packageJsonConfig = CommentJson.parse(pkgJsonContent);
        }
        const config = await hasEslintConfiguration(eslintrcFile, packageJsonConfig);
        let deps;
        if (config.exists) {
            // Run if ESLint config exists
            return await lint(baseDir, lintDirs, eslintrcFile, pkgJsonPath, {
                lintDuringBuild,
                eslintOptions,
                reportErrorsOnly,
                maxWarnings,
                formatter,
                outputFile
            });
        } else {
            // Display warning if no ESLint configuration is present inside
            // config file during "next build", no warning is shown when
            // no eslintrc file is present
            if (lintDuringBuild) {
                if (config.emptyPkgJsonConfig || config.emptyEslintrc) {
                    Log.warn(`No ESLint configuration detected. Run ${bold(cyan('next lint'))} to begin setup`);
                }
                return null;
            } else {
                // Ask user what config they would like to start with for first time "next lint" setup
                const { config: selectedConfig } = strict ? await getESLintStrictValue(baseDir) : await cliPrompt(baseDir);
                if (selectedConfig == null) {
                    // Show a warning if no option is selected in prompt
                    Log.warn('If you set up ESLint yourself, we recommend adding the Next.js ESLint plugin. See https://nextjs.org/docs/app/api-reference/config/eslint#migrating-existing-config');
                    return null;
                } else {
                    // Check if necessary deps installed, and install any that are missing
                    deps = await hasNecessaryDependencies(baseDir, requiredPackages);
                    if (deps.missing.length > 0) {
                        deps.missing.forEach((dep)=>{
                            if (dep.pkg === 'eslint') {
                                // pin to v9 to avoid breaking changes
                                dep.pkg = 'eslint@^9';
                            }
                        });
                        await installDependencies(baseDir, deps.missing, true);
                    }
                    // Write default ESLint config.
                    // Check for /pages and src/pages is to make sure this happens in Next.js folder
                    if ([
                        'app',
                        'src/app',
                        'pages',
                        'src/pages'
                    ].some((dir)=>existsSync(path.join(baseDir, dir)))) {
                        await writeDefaultConfig(baseDir, config, selectedConfig, eslintrcFile, pkgJsonPath, packageJsonConfig);
                    }
                }
                Log.ready(`ESLint has successfully been configured. Run ${bold(cyan('next lint'))} again to view warnings and errors.`);
                return null;
            }
        }
    } catch (err) {
        throw err;
    }
}

//# sourceMappingURL=runLintCheck.js.map