#!/usr/bin/env bash

# Must be sourced, not executed
if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
  echo "Dette scriptet må kjøres med:"
  echo "  source ps1.sh"
  echo "eller:"
  echo "  . ps1.sh"
  exit 1
fi

# Only for interactive shells
case "$-" in
  *i*) ;;
  *) return 0 ;;
esac

# ---- Emoji pools (edit these) ----
# Keep them as simple strings; terminals must support the emoji glyphs.
__PS1_EMOJI_FUN=( "🚀" "✨" "🔥" "🌈" "🧠" "🛠️" "📦" "🧩" "🧪" "⚡" "🐧" "🛰️" )

# ---- Emoji function (simple random) ----
_ps1_emoji() {
  local n="${#__PS1_EMOJI_FUN[@]}"
  # RANDOM is bash built-in
  printf '%s' "${__PS1_EMOJI_FUN[RANDOM % n]}"
}

# ---- Your PS1 core (edit to taste) ----
# This is intentionally simple: time, jobs, host, cwd, emoji.
# Use \\[ \\] around non-printing escape sequences to keep line editing sane.
_ps1_build() {
  local emoji="$(_ps1_emoji)"
  # Colors: 35 (purple) + 38 (cyan-ish) from your earlier style
  printf '%b' \
"\[\e[0m\]\[\e[38;5;35m\]╭─(\[\e[38;5;38m\]\t\[\e[38;5;35m\])-(\[\e[38;5;38m\]\j\[\e[38;5;35m\])-(\[\e[38;5;38m\]\H\[\e[38;5;35m\])-(\[\e[38;5;38m\]\w\[\e[38;5;35m\])\n\[\e[38;5;35m\]╰──${emoji} \[\e[0m\]"
}

# ---- PROMPT_COMMAND hook (updates PS1 each prompt) ----
# We add our updater without nuking an existing PROMPT_COMMAND.
__PS1_PREV_PROMPT_COMMAND=""

_ps1_set_prompt_command() {
  # Save existing PROMPT_COMMAND once
  if [[ -z "${__PS1_PREV_PROMPT_COMMAND+x}" || -z "$__PS1_PREV_PROMPT_COMMAND" ]]; then
    __PS1_PREV_PROMPT_COMMAND="${PROMPT_COMMAND-}"
  fi

  local updater='_PS1=$(_ps1_build); export PS1="$_PS1"'
  if [[ -z "${PROMPT_COMMAND-}" ]]; then
    PROMPT_COMMAND="$updater"
  else
    # Avoid duplicating if user runs ps1_on multiple times
    case "$PROMPT_COMMAND" in
      *"_ps1_build"*) : ;;
      *)
        PROMPT_COMMAND="$updater; $PROMPT_COMMAND"
        ;;
    esac
  fi
}

_ps1_restore_prompt_command() {
  PROMPT_COMMAND="${__PS1_PREV_PROMPT_COMMAND-}"
}

# ---- Public controls ----
ps1_on() {
  _ps1_set_prompt_command
  # Force immediate update
  _PS1="$(_ps1_build)"; export PS1="$_PS1"
}

ps1_off() {
  psanimate_stop >/dev/null 2>&1 || true
  _ps1_restore_prompt_command
}

# ---- Animation helpers (simple loop that forces prompt refresh) ----
# This follows the same basic idea as in the Medium post: background loop updates prompt periodically. :contentReference[oaicite:2]{index=2}
__PSANIMATE_PIDFILE="/tmp/psanimatepid-$$"

psanimate() {
  local interval="${1:-0.5}"

  # Stop existing animator for this shell, if any
  psanimate_stop >/dev/null 2>&1 || true

  # Ensure prompt is enabled
  ps1_on

  (
    while :; do
      # Trigger a prompt rebuild by setting PS1; next prompt draw will use it.
      _PS1="$(_ps1_build)"; export PS1="$_PS1"
      sleep "$interval"
    done
  ) &

  echo "$!" > "$__PSANIMATE_PIDFILE"
}

psanimate_stop() {
  if [[ -f "$__PSANIMATE_PIDFILE" ]]; then
    local pid
    pid="$(cat "$__PSANIMATE_PIDFILE" 2>/dev/null || true)"
    if [[ -n "${pid:-}" ]]; then
      kill "$pid" 2>/dev/null || true
    fi
    rm -f "$__PSANIMATE_PIDFILE"
  fi
}