#!/usr/bin/env bash
set -euo pipefail

export SHELL="/bin/bash"
export PATH="${HOME}/.local/bin:/usr/local/bin:/usr/bin:/bin:${PATH:-}"

workspace="${CODEX_TERMINAL_WORKSPACE:-${HOME}/workspace}"
session_name="${CODEX_TMUX_SESSION:-codex}"

if [ ! -d "$workspace" ]; then
    echo "Codex workspace does not exist: $workspace" >&2
    exit 1
fi

new_session=0
if ! tmux has-session -t "$session_name" 2> /dev/null; then
    tmux new-session -d -s "$session_name" -c "$workspace" /bin/bash -l
    new_session=1
fi

if [ "$new_session" -eq 1 ]; then
    tmux send-keys -t "$session_name" \
        "printf '\\nChatGPT Codex add-on\\n  login: codex-login\\n  optimized: codex-headroom\\n  direct: codex-direct\\n  savings: rtk gain && headroom perf\\n\\n'" C-m
    if [ "${CODEX_AUTO_START:-1}" = "1" ]; then
        if [ "${CODEX_USE_HEADROOM:-1}" = "1" ]; then
            tmux send-keys -t "$session_name" "codex-headroom" C-m
        else
            tmux send-keys -t "$session_name" "codex-direct" C-m
        fi
    fi
fi

exec tmux attach-session -t "$session_name"