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#!/bin/bash
# Launch tmux session with an LLM in fzf-selected project directories
SESSION="ai"
# Switch to or attach to the session
attach_session() {
if [ -n "$TMUX" ]; then
tmux switch-client -t "$SESSION"
else
tmux attach-session -t "$SESSION"
fi
}
# Dependency checks
for cmd in fzf tmux claude; do
if ! command -v "$cmd" &>/dev/null; then
echo "Error: $cmd is not installed" >&2
exit 1
fi
done
# Claude command — separated for safe editing
AI_CMD="claude"
AI_INSTRUCTIONS='Read docs/protocols.org and follow all instructions.'
# Create a window in the session and launch claude; prints window ID
create_window() {
local dir="$1" name="$2" wid
wid=$(tmux new-window -t "$SESSION" -n "$name" -c "$dir" -P -F '#{window_id}')
sleep 0.1
tmux send-keys -t "$wid" "$AI_CMD \"$AI_INSTRUCTIONS\"" Enter
echo "$wid"
}
# Read fzf selections into the 'selected' array
read_selections() {
selected=()
while IFS= read -r line; do
selected+=("$line")
done <<<"$1"
}
# Build candidate directory list
build_candidates() {
candidates=()
[ -d "$HOME/.emacs.d" ] && candidates+=("~/.emacs.d")
if [ -d "$HOME/code" ]; then
while IFS= read -r d; do
candidates+=("~/${d#"$HOME"/}")
done < <(find "$HOME/code" -maxdepth 1 -mindepth 1 -type d | sort)
fi
if [ -d "$HOME/projects" ]; then
while IFS= read -r d; do
candidates+=("~/${d#"$HOME"/}")
done < <(find "$HOME/projects" -maxdepth 1 -mindepth 1 -type d | sort)
fi
}
# Sort windows alphabetically by name, shells last
sort_windows() {
local windows shells projects
windows=$(tmux list-windows -t "$SESSION" -F '#{window_name}'$'\t''#{window_id}')
shells=$(echo "$windows" | grep -iE '^(bash|zsh|fish|sh)'$'\t' | sort -t$'\t' -k1,1f)
projects=$(echo "$windows" | grep -viE '^(bash|zsh|fish|sh)'$'\t' | sort -t$'\t' -k1,1f)
local all
all=$(printf '%s\n' "$shells" "$projects" | sed '/^$/d')
# Move all to high temp indices to avoid collisions
local i=900
while IFS=$'\t' read -r _name wid; do
tmux move-window -s "$wid" -t "$SESSION:$i"
((i++))
done <<<"$all"
# Place shells at 0, projects from 1
i=0
if [ -n "$shells" ]; then
while IFS=$'\t' read -r _name wid; do
tmux move-window -s "$wid" -t "$SESSION:$i"
((i++))
done <<<"$shells"
fi
i=1
if [ -n "$projects" ]; then
while IFS=$'\t' read -r _name wid; do
tmux move-window -s "$wid" -t "$SESSION:$i"
((i++))
done <<<"$projects"
fi
}
# Attach directly to existing session
if [ "$1" = "--attach" ]; then
if ! tmux has-session -t "$SESSION" 2>/dev/null; then
echo "No $SESSION session to attach to." >&2
exit 1
fi
sort_windows
attach_session
exit 0
fi
# If session exists, add new windows to it
if tmux has-session -t "$SESSION" 2>/dev/null; then
# Get existing window names to filter duplicates
existing=$(tmux list-windows -t "$SESSION" -F '#{window_name}')
build_candidates
# Filter out candidates that already have a window open
filtered=()
for c in "${candidates[@]}"; do
name="$(basename "${c/#\~/$HOME}")"
if ! echo "$existing" | grep -qxF "$name"; then
filtered+=("$c")
fi
done
if [ ${#filtered[@]} -eq 0 ]; then
echo "All projects already have windows open."
else
selections=$(printf '%s\n' "${filtered[@]}" | fzf --multi --height=70% --reverse)
if [ -n "$selections" ]; then
read_selections "$selections"
first_wid=""
for entry in "${selected[@]}"; do
dir="${entry/#\~/$HOME}"
name="$(basename "$dir")"
wid=$(create_window "$dir" "$name")
[ -z "$first_wid" ] && first_wid="$wid"
done
tmux select-window -t "$first_wid"
fi
fi
sort_windows
attach_session
exit 0
fi
# New session: select projects and create session
build_candidates
selections=$(printf '%s\n' "${candidates[@]}" | fzf --multi --height=70% --reverse)
[ -z "$selections" ] && exit 0
read_selections "$selections"
# Create session with first selection
first="${selected[0]}"
dir="${first/#\~/$HOME}"
name="$(basename "$dir")"
first_wid=$(tmux new-session -d -s "$SESSION" -n "$name" -c "$dir" -P -F '#{window_id}')
tmux send-keys -t "$first_wid" "$AI_CMD \"$AI_INSTRUCTIONS\"" Enter
# Create remaining windows
for entry in "${selected[@]:1}"; do
dir="${entry/#\~/$HOME}"
name="$(basename "$dir")"
create_window "$dir" "$name" > /dev/null
done
# Sort windows and select first
sort_windows
tmux select-window -t "$SESSION:1"
attach_session
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