"use strict"

const _ = require("lodash")
const chalk = require("chalk")
const stringFormatter = require("./stringFormatter")

module.exports = function (results) {
  let output = stringFormatter(results)

  if (output === "") {
    output = "\n"
  }

  const sourceWord = results.length > 1 ? "sources" : "source"
  const ignoredCount = results.filter(result => result.ignored).length
  const checkedDisplay = ignoredCount ? `${results.length - ignoredCount} of ${results.length}` : results.length
  output += chalk.underline(`${checkedDisplay} ${sourceWord} checked\n`)
  results.forEach(result => {
    let formatting = "green"
    if (result.errored) {
      formatting = "red"
    } else if (result.warnings.length) {
      formatting = "yellow"
    } else if (result.ignored) {
      formatting = "dim"
    }
    let sourceText = `${result.source}`
    if (result.ignored) {
      sourceText += " (ignored)"
    }
    output += _.get(chalk, formatting)(` ${sourceText}\n`)
  })

  const warnings = _.flatten(results.map(r => r.warnings))
  const warningsBySeverity = _.groupBy(warnings, "severity")
  const problemWord = warnings.length === 1 ? "problem" : "problems"

  output += chalk.underline(`\n${warnings.length} ${problemWord} found\n`)

  _.forOwn(warningsBySeverity, (warningList, severityLevel) => {
    const warningsByRule = _.groupBy(warningList, "rule")
    output += ` severity level "${severityLevel}": ${warningList.length}\n`
    _.forOwn(warningsByRule, (list, rule) => {
      output += chalk.dim(`  ${rule}: ${list.length}\n`)
    })
  })

  return output + "\n"
}