#!/bin/bash

# This workflow runs axe checks on modified doc/content/components/* or doc/content/components/* pages because those include code examples.
# Developers frequently copy and paste examples directly so it's important to ensure the examples are accessible.
# Learn about @axe-core/cli: https://github.com/dequelabs/axe-core-npm/tree/develop/packages/cli

if [ -z "$STRING_OF_PATHS_WE_CARE_ABOUT" ]; then
  echo "The script cannot run because STRING_OF_PATHS_WE_CARE_ABOUT is not correctly set for some reason"
  echo "Exiting..."
  exit 1
else
  array=($STRING_OF_PATHS_WE_CARE_ABOUT)
  printf "%s\n" "${array[@]}" > temp.txt
fi

# Parsing paths from the filenames...
nav_paths=()
while IFS= read -r file
do
  prefix="docs/content"
  suffix=".md"
  doc_path=${file#"$prefix"}
  doc_path=${doc_path%"$suffix"}
  nav_paths+=($doc_path)
done < temp.txt
rm temp.txt

# https://stackoverflow.com/a/8574392
containsElement () {
  local e match="$1"
  shift
  for e; do [[ "$e" == "$match" ]] && return 0; done
  return 1
}

# Starting point violations
# DO NOT ADD TO THIS LIST!
needs_to_be_fixed=(
  /components/autocomplete
  /components/avatars
  /components/box
  /components/buttons
  /components/header
  /components/markdown
  /components/progress
  /components/select-menu
  /components/labels
  /components/timeline
  /components/toasts
  /utilities/flexbox
  /utilities/layout 
)

echo "Pages that included in this starting point violations list are excluded from checks:"
printf '%s\n' "${needs_to_be_fixed[@]}"

doc_urls=()
skipped=()
for i in "${nav_paths[@]}"; 
do
  if containsElement "${i//\"/}" "${needs_to_be_fixed[@]}"; then
    skipped+=($i)
    continue
  else
    doc_url="http://localhost:8000$i"
    doc_url="${doc_url//\"/}"
    doc_urls+=($doc_url)
  fi
done

if (( ${#skipped[@]} )); then
  echo "==========================================================================================="
  echo "WARNING"
  echo ""
  echo "Oh no! We have to skip accessibility checks on these doc pages you updated:"
  echo ""
  printf '%s\n' "${skipped[@]}"
  echo ""
  echo "because they are part of the starting point violations list."
  echo ""
  echo "Help us get one closer to getting rid of this list!"
  echo "Consider addressing the accessibility issues on the examples of these pages as part of your PR ❤️"
  echo "==========================================================================================="
fi

# Run axe checks only if there are pages to run it on
if [ ${#doc_urls[@]} -eq 0 ]; then
  exit
else
  echo "Installing axe..."
  npm install -g @axe-core/cli
  # https://github.com/dequelabs/axe-core-npm/tree/develop/packages/cli
  # We exclude rules that depend on full page context.
  echo "Running axe..."
  axe ${doc_urls[@]} --include "iframe" --disable html-has-lang,frame-title,page-has-heading-one,region,color-contrast,landmark-unique,landmark-one-main --exit --show-errors
fi