function eleventyComputedPermalink() {
  // When using `addGlobalData` and you *want* to return a function, you must nest functions like this.
  // `addGlobalData` acts like a global data file and runs the top level function it receives.
  return (data) => {
    // Always skip during non-watch/serve builds
    if (data.draft && !process.env.BUILD_DRAFTS) {
      return false
    }

    return data.permalink
  }
}

function eleventyComputedExcludeFromCollections() {
  // When using `addGlobalData` and you *want* to return a function, you must nest functions like this.
  // `addGlobalData` acts like a global data file and runs the top level function it receives.
  return (data) => {
    // Always exclude from non-watch/serve builds
    if (data.draft && !process.env.BUILD_DRAFTS) {
      return true
    }

    return data.eleventyExcludeFromCollections
  }
}

module.exports.eleventyComputedPermalink = eleventyComputedPermalink
module.exports.eleventyComputedExcludeFromCollections =
  eleventyComputedExcludeFromCollections

module.exports = (eleventyConfig) => {
  eleventyConfig.addGlobalData(
    'eleventyComputed.permalink',
    eleventyComputedPermalink,
  )
  eleventyConfig.addGlobalData(
    'eleventyComputed.eleventyExcludeFromCollections',
    eleventyComputedExcludeFromCollections,
  )

  let logged = false
  eleventyConfig.on('eleventy.before', ({ runMode }) => {
    let text = 'Excluding'
    // Only show drafts in serve/watch modes
    if (runMode === 'serve' || runMode === 'watch') {
      process.env.BUILD_DRAFTS = true
      text = 'Including'
    }

    // Only log once.
    if (!logged) {
      console.log(`[11ty/eleventy-base-blog] ${text} drafts.`)
    }

    logged = true
  })
}