#!/bin/bash

set -e

source bin/require_sed

# This script creates corpus *.txt files expected by `tree-sitter test` in the format
# expected [0] based on *.php and *.exp files in test/cases.
#
# [0] https://tree-sitter.github.io/tree-sitter/creating-parsers#:~:text=Return%20statements

export LC_ALL="C" # Necessary for sorting in a consistent fashion

for cases_path in test/cases/*; do
  corpus_name=$(basename $cases_path)
  corpus_path="test/corpus/$corpus_name.txt"

  echo "Generating $corpus_path"

  cases="$(ls -d $cases_path/* | grep -E '^[^.]*\.exp$' | $sed -Ee 's/.exp$//' | sort -bu)"

  printf "" >$corpus_path
  first=1

  for case in $cases; do
    exp="$case.exp"

    if [[ -f "$case.php" ]]; then
      code="$case.php"
    elif [[ -f "$case.hack" ]]; then
      code="$case.hack"
    elif [[ -f "$case.hhi" ]]; then
      code="$case.hhi"
    else
      printf "Source file not found for $exp\n"
      exit 1
    fi

    # Use the test case file name as the description
    description=$(printf "$(basename $case)" | $sed -e 's/^\(.\)/\u\1/g' -e 's/-/ /g')

    if [[ $first -eq 0 ]]; then
      printf "\n" >>$corpus_path
    else
      first=0
    fi

    printf "==========================\n" >>$corpus_path
    printf "$description\n" >>$corpus_path
    printf "==========================\n\n" >>$corpus_path

    cat $code >>$corpus_path

    printf "\n---\n\n" >>$corpus_path

    cat $exp >>$corpus_path
  done
done