import colors from "colors/safe";
import { Problem } from "../context";
import { getFileName } from "../utils";

const severities = ["info", "warning", "error"];

export function terminalOutput(problems: Problem[]) {
  if (problems.length === 0) {
    return;
  }

  for (const problem of problems) {
    const { id } = problem.object;
    console.log(colors.underline(id));
    console.log(
      severity(problem.severity, problem.severity) +
        "  " +
        problem.message +
        "  " +
        colors.gray(getFileName(problem.rule))
    );
    console.log();
  }

  const maxSeverity =
    severities[
      Math.max(...problems.map(problem => severities.indexOf(problem.severity)))
    ];

  console.log(
    severity(
      maxSeverity,
      `${problems.length} problem${problems.length === 1 ? "" : "s"} reported`
    )
  );
}

function severity(severity: string, str: string) {
  if (severity === "info") {
    return colors.green(str);
  } else if (severity === "warning") {
    return colors.yellow(str);
  } else if (severity === "error") {
    return colors.red(str);
  } else {
    throw new Error(`Invalid severity: ${severity}`);
  }
}