set -g prefix C-a
unbind C-b

set -g xterm-keys on
set -s extended-keys on

set -g history-file ~/.tmux_history

set -s escape-time 1

set -g base-index 1
setw -g pane-base-index 1

set -g main-pane-width 160

bind r source-file ~/.tmux.conf \; display "Reloaded!"
bind -r '`' clear-history \; display "History Cleared!"

bind C-a send-prefix

bind | split-window -h
bind - split-window -v

bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

bind -r C-h select-window -t :-
bind -r C-l select-window -t :+

bind H resize-pane -L 5
bind J resize-pane -D 5
bind K resize-pane -U 5
bind L resize-pane -R 5

setw -g mouse off

# set -g default-terminal "xterm-256:color"
# set -g default-terminal "${TERM}"
set -g default-terminal "tmux-256color"
set -g history-limit 55000

set -g window-status-style dim
set -g window-status-current-style bright

setw -g mode-keys vi

set -g status-right '#(~/dotfiles/bin/tmux_battery_charge_indicator.sh) #[bg=white,fg=colour240] %H:%M #[bg=colour240,fg=white] %Y-%m-%d '

set -g update-environment "DISPLAY SSH_ASKPASS SSH_AGENT_PID SSH_CONNECTION WINDOWID XAUTHORITY"
set-environment -g 'SSH_AUTH_SOCK' ~/.ssh/ssh_auth_sock

# set -as terminal-overrides ',xterm-256color:RGB'
set -as terminal-features ',tmux-256color:RGB'
set-option -sa terminal-overrides ',tmux-256color:RGB'

# Undercurl
set -as terminal-overrides ',*:Smulx=\E[4::%p1%dm'  # undercurl support
# set -gas terminal-overrides ',*:Ss=\E[%p1%d q:Se=\E[2 q'
set -as terminal-overrides ',*:Setulc=\E[58::2::%p1%{65536}%/%d::%p1%{256}%/%{255}%&%d::%p1%{255}%&%d%;m'  # underscore colours - needs tmux-3.0

set-option -g focus-events on


# Smart pane switching with awareness of Vim splits.
# See: https://github.com/christoomey/vim-tmux-navigator
is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
bind-key -n M-S-h if-shell "$is_vim" 'send-keys M-S-h'  'resize-pane -L 3'
bind-key -n M-S-j if-shell "$is_vim" 'send-keys M-S-j'  'resize-pane -D 3'
bind-key -n M-S-k if-shell "$is_vim" 'send-keys M-S-k'  'resize-pane -U 3'
bind-key -n M-S-l if-shell "$is_vim" 'send-keys M-S-l'  'resize-pane -R 3'

bind-key -n M-h if-shell "$is_vim" 'send-keys M-h' 'select-pane -L'
bind-key -n M-j if-shell "$is_vim" 'send-keys M-j' 'select-pane -D'
bind-key -n M-k if-shell "$is_vim" 'send-keys M-k' 'select-pane -U'
bind-key -n M-l if-shell "$is_vim" 'send-keys M-l' 'select-pane -R'

tmux_version='$(tmux -V | sed -En "s/^tmux ([0-9]+(.[0-9]+)?).*/\1/p")'
if-shell -b '[ "$(echo "$tmux_version < 3.0" | bc)" = 1 ]' \
    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\'  'select-pane -l'"
if-shell -b '[ "$(echo "$tmux_version >= 3.0" | bc)" = 1 ]' \
    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\\\'  'select-pane -l'"

bind-key -T copy-mode-vi 'M-S-h' select-pane -L
bind-key -T copy-mode-vi 'M-S-j' select-pane -D
bind-key -T copy-mode-vi 'M-S-k' select-pane -U
bind-key -T copy-mode-vi 'M-S-l' select-pane -R
bind-key -T copy-mode-vi 'M-S-\' select-pane -l