#!/bin/bash

if ! tmux info &>/dev/null; then
    echo "========================================"
    echo " No Active Terminal Sessions Found"
    echo "========================================"
    echo "The tmux server is not running."
    exit 0
fi

# Fetch unique sessions using sort -u to completely eliminate double listings
sessions=$(tmux list-sessions -F "#S" 2>/dev/null | sort -u)

if [ -z "$sessions" ]; then
    echo "No active terminal sessions found."
    exit 1
fi

echo "========================================"
echo " Active Terminal Sessions"
echo "========================================"

if_names=()
while read -r line; do
    [[ -n "$line" ]] && if_names+=("$line")
done <<< "$sessions"

for i in "${!if_names[@]}"; do
    display_title=$(tmux display-message -t "${if_names[$i]}" -p "#T")
    current_cmd=$(tmux display-message -t "${if_names[$i]}" -p "#{pane_current_command}")

    if [ "$display_title" = "bash" ] || [ "$display_title" = "zsh" ] || [[ "$display_title" == *"Terminal"* ]]; then
        title_string="Running: $current_cmd"
    else
        title_string="Title: '$display_title' ($current_cmd)"
    fi

    echo "[$i] Session: ${if_names[$i]} -> $title_string"
done

echo "========================================"
read -p "Select a session number to attach (or 'q' to quit): " choice

if [[ "$choice" =~ ^[0-9]+$ ]] && [ "$choice" -lt "${#if_names[@]}" ]; then
    tmux attach-session -t "${if_names[$choice]}"
else
    echo "Exiting."
fi