Codex 如何切换 OpenAI Compatible API

#!/bin/zsh
setopt errexit pipefail

typeset -r official_home="$HOME/.codex"
typeset -r profiles_root="$HOME/.codex-profiles"
typeset -r shared_skills="$HOME/.codex-shared/skills"

typeset -A profile_labels profile_base_envs profile_key_envs
typeset -A profile_models profile_efforts
profile_labels[packyapi]="PackyApi"
profile_labels[devpoolai]="DevPoolAi"
profile_base_envs[packyapi]="PACKY_BASE_URL"
profile_base_envs[devpoolai]="DEVPOOL_BASE_URL"
profile_key_envs[packyapi]="PACKY_API_KEY"
profile_key_envs[devpoolai]="DEVPOOL_API_KEY"
profile_models[packyapi]="provider-model-name"
profile_models[devpoolai]="provider-model-name"
profile_efforts[packyapi]="medium"
profile_efforts[devpoolai]="medium"

usage() { print "Usage: codex-switch [current|list|official|packyapi|devpoolai]"; }

launchd_env_value() {
  local name="$1" value=""
  case "$name" in
    PACKY_BASE_URL) value="${PACKY_BASE_URL-}" ;;
    PACKY_API_KEY) value="${PACKY_API_KEY-}" ;;
    DEVPOOL_BASE_URL) value="${DEVPOOL_BASE_URL-}" ;;
    DEVPOOL_API_KEY) value="${DEVPOOL_API_KEY-}" ;;
  esac
  [[ -n "$value" ]] && print -r -- "$value" || launchctl getenv "$name" 2>/dev/null || true
}

profile_label() { print -r -- "${profile_labels[$1]-$1}"; }
valid_profile_id() { [[ "$1" =~ '^[a-z0-9][a-z0-9_-]*$' ]]; }
current_home() { launchctl getenv CODEX_HOME 2>/dev/null || true; }

current_description() {
  local active="$(current_home)"
  [[ -z "$active" || "$active" == "$official_home" ]] && print "Official ($official_home)" && return
  if [[ "$active" == "$profiles_root"/* ]]; then
    local id="${active#$profiles_root/}"
    [[ "$id" != */* && -n "${profile_labels[$id]-}" ]] && print "$(profile_label "$id") ($active)" && return
  fi
  print "Custom ($active)"
}

profile_ids() {
  local path id
  for id in packyapi devpoolai; do [[ -d "$profiles_root/$id" ]] && print "$id"; done
  for path in "$profiles_root"/*(N/); do
    id="${path:t}"; [[ "$id" == packyapi || "$id" == devpoolai ]] && continue
    print "$id"
  done
}

check_profile_safety() {
  local id="$1" dir="$profiles_root/$1"
  [[ -d "$dir" ]] || { print -u2 "Profile directory does not exist: $dir"; return 1; }
  [[ ! -e "$dir/auth.json" && ! -L "$dir/auth.json" ]] || { print -u2 "Refusing to use $dir because auth.json exists."; return 1; }
  [[ -L "$dir/skills" && "$(readlink "$dir/skills")" == "$shared_skills" ]] || {
    print -u2 "Refusing to use $dir because skills is not linked to $shared_skills."; return 1;
  }
}

write_managed_config() {
  local id="$1" dir="$profiles_root/$1" path="$profiles_root/$1/config.toml"
  local base_env="${profile_base_envs[$id]-}" key_env="${profile_key_envs[$id]-}"
  local base_url="$(launchd_env_value "$base_env")" api_key="$(launchd_env_value "$key_env")"
  [[ -n "$base_url" && -n "$api_key" ]] || { print -u2 "Set $base_env and $key_env first."; return 1; }
  [[ "$base_url" == http://* || "$base_url" == https://* ]] || { print -u2 "$base_env must be an HTTP(S) URL."; return 1; }
  if [[ -e "$path" || -L "$path" ]] && ! grep -q '^# Managed by codex-switch$' "$path"; then
    print -u2 "Refusing to overwrite unmanaged $path"; return 1
  fi
  local temp="$(mktemp "$dir/.config.toml.XXXXXX")"; chmod 600 "$temp"
  cat > "$temp" <<EOF
# Managed by codex-switch
model = "${profile_models[$id]}"
model_provider = "$id"
model_reasoning_effort = "${profile_efforts[$id]}"
disable_response_storage = true
service_tier = "default"

[model_providers.$id]
name = "$(profile_label "$id")"
base_url = "$base_url"
env_key = "$key_env"
wire_api = "responses"
EOF
  mv "$temp" "$path"
}

switch_profile() {
  local id="${1:l}" dir="$profiles_root/${1:l}"
  if [[ "$id" == official ]]; then
    launchctl unsetenv CODEX_HOME
    print "Switched to Official ($official_home). Restart Codex / VS Code to apply."; return
  fi
  valid_profile_id "$id" || { print -u2 "Invalid profile name: $1"; return 2; }
  check_profile_safety "$id"
  [[ -n "${profile_base_envs[$id]-}" ]] && write_managed_config "$id"
  [[ -f "$dir/config.toml" ]] || { print -u2 "Profile '$id' has no config.toml."; return 1; }
  launchctl setenv CODEX_HOME "$dir"
  print "Switched to $(profile_label "$id") ($dir). Restart Codex / VS Code to apply."
}

list_profiles() {
  print "Current: $(current_description)"
  print "1) Official ($official_home)"
  print "2) PackyApi ($profiles_root/packyapi)"
  print "3) DevPoolAi ($profiles_root/devpoolai)"
}

menu() {
  list_profiles
  read "choice?Select: "
  case "$choice" in
    1) switch_profile official ;;
    2) switch_profile packyapi ;;
    3) switch_profile devpoolai ;;
    *) print -u2 "Invalid selection."; return 2 ;;
  esac
}

case "${1-}" in
  "") menu ;;
  current) current_description ;;
  official|packyapi|devpoolai) switch_profile "$1" ;;
  list) list_profiles ;;
  *) usage; exit 2 ;;
esac