when you hate oh-my-opencode style footer but still want to mark commit as AI generated

assisted-by

#!/usr/bin/env bash

set -euo pipefail

if [ "$#" -lt 1 ]; then
  echo "usage: assisted-by <model-name>" >&2
  exit 1
fi

model_raw="$(printf '%s' "$1" | sed -E "s/^[[:space:]]+//; s/[[:space:]]+$//; s/^(['\"])(.*)\\1$/\\2/")"

model="$(printf '%s' "$model_raw" | tr '[:upper:]' '[:lower:]')"

co_author=""

case "$model" in
  gpt-*|o*|codex*|chatgpt*|openai/*)
    co_author="chatgpt-codex-connector[bot] <199175422+chatgpt-codex-connector[bot]@users.noreply.github.com>"
    ;;
  gemini*|google/gemini*)
    co_author="gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>"
    ;;
esac

if [[ -z "$co_author" && "$model" =~ ^claude-([0-9]+\.?[0-9]*)-(opus|sonnet|haiku)$ ]]; then
  version="${BASH_REMATCH[1]}"
  family="${BASH_REMATCH[2]}"
  family_title="${family^}"
  co_author="Claude ${family_title} ${version} <noreply@anthropic.com>"
fi

if [[ -z "$co_author" && "$model" =~ ^claude-(opus|sonnet|haiku)-([0-9]+)-([0-9]+)$ ]]; then
  family="${BASH_REMATCH[1]}"
  major="${BASH_REMATCH[2]}"
  minor="${BASH_REMATCH[3]}"
  family_title="${family^}"
  co_author="Claude ${family_title} ${major}.${minor} <noreply@anthropic.com>"
fi

if [[ -z "$co_author" && "$model" =~ ^claude-(opus|sonnet|haiku)$ ]]; then
  family="${BASH_REMATCH[1]}"
  family_title="${family^}"
  co_author="Claude ${family_title} <noreply@anthropic.com>"
fi

printf '%s\n' "Assisted-by: ${model_raw} on opencode"

if [ -n "$co_author" ]; then
  printf '%s\n' "Co-authored-by: ${co_author}"
fi