#!/bin/sh

negate=0
mode="-a"

# Process options
while test $# -gt 0 && test "${1#-}" != "$1"; do
  case "$1" in
    -n)
      negate=1
      ;;
    -a)
      mode="-a"
      ;;
    -o)
      mode="-o"
      ;;
    *)
      echo "Invalid option: $1"
      echo "usage: [options] arguments ..."
      echo "  -a  matching lines must contain all strings. the default"
      echo "  -n  negate"
      echo "  -o  matching lines must contain at least one of the strings"
      exit 1
      ;;
  esac
  shift
done

# Ensure that patterns are provided
if test $# -eq 0; then
  echo "No patterns provided."
  exit 1
fi

# Build the regex based on the mode
case "$mode" in
  -a)
    # Build regex with positive lookaheads for all patterns
    regex=""
    for pat in "$@"; do
      regex="${regex}(?=.*${pat})"
    done
    rg_opts="-P"
    ;;
  -o)
    # Build an OR regex for any of the patterns
    regex=$(printf '%s|' "$@" | sed 's/|$//')
    rg_opts=""
    ;;
esac

# Add the negate option if needed
if test $negate -eq 1; then
  rg_opts="$rg_opts -v"
fi

# Run ripgrep with the constructed options and regex
rg -S --color=never $rg_opts "$regex"