const fs = require('fs')
const path = require('path')

const {getConfigParserSettings} = require('./set-pages-path')
const {ConfigParser} = require('./config-parser')
const {getTempFolder, compareFiles} = require('./test-helpers')

// Get the temp folder
const tempFolder = getTempFolder()

// Test suite
describe('configParser', () => {
  // Iterate over the static site generators
  ;['next', 'nuxt', 'gatsby'].forEach(staticSiteGenerator => {
    // Folder containing the fixtures for a given static site generator
    const fixtureFolder = `${__dirname}/fixtures/${staticSiteGenerator}`

    // Iterate over the fixtures
    fs.readdirSync(fixtureFolder).forEach(configurationFile => {
      // Ignore expectation
      if (configurationFile.endsWith('.expected.js')) {
        return
      }

      it(`Inject path properly for ${staticSiteGenerator} in ${configurationFile}`, async () => {
        // Get settings for the static site generator
        const settings = getConfigParserSettings(staticSiteGenerator, '/docs/')

        // Copy the source fixture to a temp file
        const fixtureSourceFile = `${fixtureFolder}/${configurationFile}`
        const fixtureTargetFile = `${tempFolder}/${configurationFile}`
        if (configurationFile != 'blank.js') {
          fs.copyFileSync(fixtureSourceFile, fixtureTargetFile)
        } else if (fs.existsSync(fixtureTargetFile)) {
          fs.rmSync(fixtureTargetFile)
        }

        // Update the settings and do the injection
        settings.configurationFile = fixtureTargetFile
        new ConfigParser(settings).injectAll()

        // Read the expected file
        const expectedFile = `${fixtureFolder}/${path.basename(
          configurationFile,
          '.js'
        )}.expected.js`

        // Compare the actual and expected files
        compareFiles(settings.configurationFile, expectedFile)
      })
    })
  })
})