#!/usr/bin/env bash

# when deleting the tests suites from /features there might be the tests scenarios that might be in the expected to failure file
# this script checks if there are such scenarios in the expected to failure file which needs to be deleted

# helper functions
log_error() {
  echo -e "\e[31m$1\e[0m"
}

log_info() {
  echo -e "\e[37m$1\e[0m"
}

log_success() {
  echo -e "\e[32m$1\e[0m"
}

SCRIPT_PATH=$(dirname "$0")
PATH_TO_SUITES="${SCRIPT_PATH}/features"
EXPECTED_FAILURE_FILES=("expected-failures-decomposed-storage.md" "expected-failures-posix-storage.md" "expected-failures-without-remotephp.md")
# contains all the suites names inside tests/acceptance/features
AVAILABLE_SUITES=($(ls -l "$PATH_TO_SUITES" | grep '^d' | awk '{print $NF}'))

# regex to match [someSuites/someFeatureFile.feature:lineNumber]
SCENARIO_REGEX="\[([a-zA-Z0-9]+/[a-zA-Z0-9]+\.feature:[0-9]+)]"

# contains all those suites available in the expected to failure files in pattern [someSuites/someFeatureFile.feature:lineNumber]
EXPECTED_FAILURE_SCENARIOS=()
EXIT_CODE=0
for expected_failure_file in "${EXPECTED_FAILURE_FILES[@]}"; do
  PATH_TO_EXPECTED_FAILURE_FILE="${SCRIPT_PATH}/${expected_failure_file}"
  EXPECTED_FAILURE_SCENARIOS=($(grep -Eo ${SCENARIO_REGEX} ${PATH_TO_EXPECTED_FAILURE_FILE}))
  # get and store only the suites names from EXPECTED_FAILURE_SCENARIOS
  EXPECTED_FAILURE_SUITES=()
  for scenario in "${EXPECTED_FAILURE_SCENARIOS[@]}"; do
    if [[ $scenario =~ \[([a-zA-Z0-9]+) ]]; then
      suite="${BASH_REMATCH[1]}"
      EXPECTED_FAILURE_SUITES+=("$suite")
   fi
  done
  # also filter the duplicated suites name
  EXPECTED_FAILURE_SUITES=($(echo "${EXPECTED_FAILURE_SUITES[@]}" | tr ' ' '\n' | sort | uniq))
  # Check the existence of the suite
  NON_EXISTING_SCENARIOS=()
  FEATURE_PATTERN="[a-zA-Z0-9]+\\.feature:[0-9]+"
  for suite in "${EXPECTED_FAILURE_SUITES[@]}"; do
    pattern="(\\b${suite}/${FEATURE_PATTERN}\\b)"
    if [[ " ${AVAILABLE_SUITES[*]} " != *" $suite "* ]]; then
      NON_EXISTING_SCENARIOS+=($(grep -Eo ${pattern} ${PATH_TO_EXPECTED_FAILURE_FILE}))
    else
      SCENARIOS=($(grep -Eo ${pattern} ${PATH_TO_EXPECTED_FAILURE_FILE} | grep -Eo "${FEATURE_PATTERN}"))
      for scenario in "${SCENARIOS[@]}"; do
        FEATURE_FILE=$(echo "$scenario" | cut -d':' -f1)
        if [[ ! -f "$PATH_TO_SUITES/$suite/$FEATURE_FILE" ]]; then
          NON_EXISTING_SCENARIOS+=("$suite/$scenario")
        fi
      done
    fi
  done

  count="${#NON_EXISTING_SCENARIOS[@]}"
  if [ "$count" -gt 0 ]; then
    EXIT_CODE=1
    log_info "The following test scenarios do not exist anymore:"
    log_info "They can be deleted from the '${expected_failure_file}'"
    for scenario_path in "${NON_EXISTING_SCENARIOS[@]}"; do
      log_error "$scenario_path"
    done
  else
    log_success "All the suites in the expected failure file '${expected_failure_file}' exist!"
  fi
  log_info "\n"
done

exit "$EXIT_CODE"