# ---- logging ---------------------------------------------------------------

log_shell_init() {
  local uid="${UID:-}"
  [[ -n "$uid" ]] || uid="$(id -u 2>/dev/null || echo unknown)"

  # Avoid a shared logfile in /tmp: if it is ever created root-owned (e.g. from
  # a root shell), user shells will spam "Permission denied" on every launch.
  #
  # Override with:
  #   export NANUQSAURUS_SHELL_INIT_LOG_FILE=/path/to/log
  local log_file="${NANUQSAURUS_SHELL_INIT_LOG_FILE:-/tmp/shell-init-${uid}.log}"

  printf '%s\n' "shell-init: $*" >>"$log_file" 2>/dev/null || true
}

# ---- helpers ---------------------------------------------------------------

have() { command -v "$1" >/dev/null 2>&1; }

is_interactive() {
  [[ -t 1 || -n ${PS1:-} ]]
}

append_unique() {
  local var="$1" val="$2"
  [[ ";${!var:-};" == *";$val;"* ]] && return
  printf -v "$var" '%s' "${!var:+${!var%;};}$val"
}

prepend_unique_array() {
  local name="$1" val="$2"
  local -n arr="$name"
  local out=("$val")
  for f in "${arr[@]}"; do [[ $f != "$val" ]] && out+=("$f"); done
  arr=("${out[@]}")
}

# ---- environment sanity ----------------------------------------------------

if [[ -z ${TERM:-} || $TERM == dumb ]]; then
  export TERM=xterm-256color
fi

INTERACTIVE=0
is_interactive && INTERACTIVE=1

log_shell_init "TERM=$TERM PS1=${PS1:-<empty>} SHELL=$SHELL interactive=$INTERACTIVE"

# Ensure PS1 exists so downstream init blocks run
if (( INTERACTIVE )) && [[ -z ${PS1:-} ]]; then
  PS1='\\s-\\v\\$ '
fi

(( INTERACTIVE )) || return 0

# ---- bash-preexec ----------------------------------------------------------

if [[ -n ${BASH_VERSION:-} && -z ${bash_preexec_imported:-} && -r "@BASHPREEXEC@" ]]; then
  # shellcheck disable=SC1090
  . "@BASHPREEXEC@"
  have __bp_install && __bp_install
  log_shell_init "bash-preexec loaded"
fi

# ---- starship --------------------------------------------------------------

if have @STARSHIP@; then
  log_shell_init "starship init"
  case $SHELL in
    */bash) eval "$(@STARSHIP@ init bash)" ;;
    */zsh)  eval "$(@STARSHIP@ init zsh)" ;;
  esac
  append_unique PROMPT_COMMAND starship_precmd
else
  log_shell_init "starship skipped"
fi

# ---- atuin -----------------------------------------------------------------

if have @ATUIN@; then
  log_shell_init "atuin init"

  if [[ -z ${ATUIN_SESSION:-} ]]; then
    export ATUIN_SESSION="$(@ATUIN@ uuid)"
    ATUIN_HISTORY_ID=""
  fi

  case $SHELL in
    */bash) eval "$(@ATUIN@ init bash)" ;;
    */zsh)  eval "$(@ATUIN@ init zsh)" ;;
  esac

  declare -a preexec_functions precmd_functions
  prepend_unique_array preexec_functions __atuin_preexec
  prepend_unique_array precmd_functions  __atuin_precmd
else
  log_shell_init "atuin skipped"
fi

# ---- zoxide ---------------------------------------------------------------

if have zoxide; then
  log_shell_init "zoxide init"
  case $SHELL in
    */bash) eval "$(zoxide init bash)" ;;
    */zsh)  eval "$(zoxide init zsh)" ;;
  esac
  have __zoxide_hook && append_unique PROMPT_COMMAND __zoxide_hook
else
  log_shell_init "zoxide skipped"
fi

# ---- bash-preexec PROMPT_COMMAND safety -----------------------------------

have __bp_precmd_invoke_cmd && append_unique PROMPT_COMMAND __bp_precmd_invoke_cmd
have __bp_interactive_mode   && append_unique PROMPT_COMMAND __bp_interactive_mode

# ---- aliases --------------------------------------------------------------

if have eza; then
  alias ls='eza'
  alias ll='eza -l --icons=auto --group-directories-first'
  alias l1='eza -1'
  alias l.='eza -d .*'
fi

if have ug; then
  alias grep='ug'
  alias egrep='ug -E'
  alias fgrep='ug -F'
  alias xzgrep='ug -z'
  alias xzegrep='ug -zE'
  alias xzfgrep='ug -zF'
fi

if have bat; then
  alias cat='bat --style=plain --pager=never' 2>/dev/null
fi