"use strict";

import { CLIEngine } from "eslint";
import { join } from "path";

import { GenericTask } from "../types";

const errorSeverity = 2;

export default ((params) => (processor) => () => {
    if (processor.settings.isCodeAnalysisUnsupported) {
        return;
    }

    const cli = new CLIEngine({ configFile: processor.settings.eslintBrowserConfig });

    const filePath = join(processor.context.exported, params.filename);
    const result = cli.executeOnFiles([filePath]);

    processor.onInfo(`ESLinted ${params.filename}`);

    result.results.forEach((subresult) => {
        subresult.messages.forEach((message) => {
            const messageText = `${params.filename}:${message.line},${message.column} (${message.ruleId}) ${message.message}`;

            if (message.fatal || message.severity === errorSeverity) {
                processor.onError(messageText);
            } else {
                processor.onWarn(messageText);
            }
        });
    });

    processor.done();
}) as GenericTask<{ readonly filename: string }>;