# some basic options
set-option -g default-shell $SHELL
set-window-option -g mode-keys vi
set-option -g history-limit 10000
set-option -g set-clipboard off
set -g escape-time 10

# set prefix to c-a
unbind C-a
unbind C-b
set -g prefix C-a
bind C-a send-prefix

set -g status-bg red
set -g status-fg white

# do some cool color stuff
set -g default-terminal "tmux-256color"
set -sa terminal-overrides ",xterm*:Tc"  # true-color
set -as terminal-overrides ',xterm*:Smulx=\E[4::%p1%dm'  # undercurl support
set -as terminal-overrides ',xterm*:Setulc=\E[58::2::%p1%{65536}%/%d::%p1%{256}%/%{255}%&%d::%p1%{255}%&%d%;m'  # underscore colours - needs tmux-3.0

# smart pane switching with awareness of vim splits
bind -n C-h run "(tmux display-message -p '#{pane_current_command}' | grep -iq vim && tmux send-keys C-h) || tmux select-pane -L || true"
bind -n C-j run "(tmux display-message -p '#{pane_current_command}' | grep -iq vim && tmux send-keys C-j) || tmux select-pane -D || true"
bind -n C-k run "(tmux display-message -p '#{pane_current_command}' | grep -iq vim && tmux send-keys C-k) || tmux select-pane -U || true"
bind -n C-l run "(tmux display-message -p '#{pane_current_command}' | grep -iq vim && tmux send-keys C-l) || tmux select-pane -R || true"
# TODO bind these in vi normal mode
bind C-h send-keys C-h
bind C-j send-keys C-j
bind C-k send-keys C-k
bind C-l send-keys C-l

# sane copying (TODO?)
bind -Tcopy-mode-vi 'v' send -X begin-selection
bind -Tcopy-mode-vi 'Y' send -X copy-pipe 'xclip'

# launch splits in the same directory and with some copied environment
# new window command opens window after current window
unbind %
unbind '"'
unbind c
bind % split-window -c "#{pane_current_path}" -h
bind '"' split-window -c "#{pane_current_path}" -v
bind c new-window -c "#{pane_current_path}" -a
# garbage-collect split pane variables
#set-hook -g pane-exited 'run-shell "zsh -c \"HOOK_PANE=#{hook_pane}; for VAR in \\\$(tmux show-environment | grep \"^ZSH_PANE_\\\${HOOK_PANE#%}_\" | cut -d= -f1); do tmux set-environment -u \\\${VAR}; done\""'

# don't change the title once I've set it
set-option -g allow-rename off

# set window title to session name for scripting
set-option -g set-titles-string "#H tmux #{session_name}"
set-option -g set-titles on


# do stuff on focus
set focus-events on
set-hook -g client-focus-in[0] attach
#set-hook -g client-focus-in[1] 'run-shell "bash -c \"tmux list-panes -sF \\\"##D\\\" | while read -r MY_PANE; do tmux set-environment ZSH_PANE_\\\${MY_PANE#%}_IMPORTS \\\"\\\$(for var in DISPLAY WAYLAND_DISPLAY; do tmux show-environment -s \\\$var || true ; done)\\\"; done\" >/tmp/augh 2>&1"'