#!/usr/bin/env bash

set -euo pipefail

repo_root=$(git rev-parse --show-toplevel)
cd "$repo_root"

printf 'Running auto-fixers and shell_check before committing...\n'

# Get list of staged shell files
mapfile -t staged_files < <(git diff --cached --name-only --diff-filter=ACM | grep -E '\.(sh|bash|zsh)$' || true)

if [[ ${#staged_files[@]} -gt 0 ]]; then
  printf 'Auto-fixing %d shell file(s)...\n' "${#staged_files[@]}"

  # Auto-fix with shfmt if available
  if command -v shfmt > /dev/null 2>&1; then
    printf '  → Running shfmt...\n'
    for file in "${staged_files[@]}"; do
      if [[ -f $file ]]; then
        shfmt -w "$file" 2> /dev/null || true
      fi
    done
  fi

  # Re-stage the auto-fixed files
  for file in "${staged_files[@]}"; do
    if [[ -f $file ]]; then
      git add "$file"
    fi
  done

  printf '  ✓ Auto-fixes applied and staged\n'
fi

printf 'Running shell_check validation...\n'

# Run shell_check to validate all checks
# Note: We only validate the staged files since we just auto-formatted them
# Validate only shellcheck, not shfmt (we already applied formatting)
mapfile -d '' -t staged_shell_files < <(git diff --cached --name-only --diff-filter=ACM -z | grep -zE '\.(sh|bash|zsh)$' || true)

if [[ ${#staged_shell_files[@]} -gt 0 ]]; then
  # Run shellcheck on staged files
  if command -v shellcheck > /dev/null 2>&1; then
    if ! shellcheck -x -S style "${staged_shell_files[@]}" 2>&1; then
      printf '\nCommit aborted: shellcheck found issues.\n' >&2
      printf 'Fix the remaining problems and retry the commit.\n' >&2
      exit 1
    fi
  fi
fi

printf 'shell_check passed. Proceeding with commit.\n'