#!/usr/bin/env bash
# tmux-session-name.sh — Auto-name new tmux sessions with emoji + codename
#
# Called by the session-created hook in .tmux.conf.local
# Usage: tmux-session-name.sh <current_session_name> <session_id>
#
# Only renames if the current name is purely numeric (tmux's default
# auto-numbering: 0, 1, 2 …). Explicitly named sessions are left alone.

CURRENT_NAME="${1:-}"
SESSION_ID="${2:-}"

# Skip if name is not a plain number (user explicitly named the session)
if [[ ! "$CURRENT_NAME" =~ ^[0-9]+$ ]]; then
  exit 0
fi

# ── Name pool ─────────────────────────────────────────────────────────────────

EMOJIS=(
  "⚡" "🔥" "🌙" "🚀" "🎯" "💎" "🌊" "🎸" "🦊" "🐉"
  "🌟" "🎭" "🔮" "🦋" "🌸" "🏔️" "🎪" "🦁" "🐺" "🦅"
  "🐬" "🌋" "⚗️" "🧠" "🔭" "🎲" "🏹" "🌀" "🦄" "🐙"
  "🎮" "🛸" "🌈" "🔱" "⚜️" "🧬" "🦾" "💫" "🎆" "🌌"
)

ADJECTIVES=(
  swift blazing cosmic silent wild golden dark frozen epic neon
  cyber ghost storm iron crystal hyper zen rogue nova apex
  void shadow turbo lunar sonic electric primal ancient savage brave
  mystic toxic ultra prime omega alpha delta sigma raging burning
)

NOUNS=(
  wolf   phoenix raven   otter  falcon dragon  viper  lynx  shark  cobra
  titan  spectre nexus   cipher forge  matrix  pulse  blade hawk   panther
  manta  kraken  hydra   mantis raptor condor  jaguar orca  wraith banshee
  golem  oracle  anvil   tempest quasar nebula comet  prism zenith apex
)

# ── Pick random combination ───────────────────────────────────────────────────

EMOJI="${EMOJIS[$RANDOM % ${#EMOJIS[@]}]}"
ADJ="${ADJECTIVES[$RANDOM % ${#ADJECTIVES[@]}]}"
NOUN="${NOUNS[$RANDOM % ${#NOUNS[@]}]}"
NEW_NAME="${EMOJI} ${ADJ}-${NOUN}"

# ── Rename ────────────────────────────────────────────────────────────────────

if [[ -n "$SESSION_ID" ]]; then
  tmux rename-session -t "$SESSION_ID" "$NEW_NAME" 2>/dev/null
else
  # Called standalone — just print the name
  echo "$NEW_NAME"
fi