# Force colors for e.g. prompt
set-option -g default-terminal "screen-256color"
set-option -ag terminal-overrides ",xterm-256color:RGB"

# Enumerate windows from 1
set -g base-index 1
# Renumber windows when one is closed to keep a gapless order
set-option -g renumber-windows on

# Lower escape-time in vim
# see https://github.com/neovim/neovim/wiki/FAQ#esc-in-tmux-or-gnu-screen-is-delayed
set -sg escape-time 0

# 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)?$'"
bind-key -n 'C-h' if-shell "$is_vim" 'send-keys C-h'  'select-pane -L'
bind-key -n 'C-j' if-shell "$is_vim" 'send-keys C-j'  'select-pane -D'
bind-key -n 'C-k' if-shell "$is_vim" 'send-keys C-k'  'select-pane -U'
bind-key -n 'C-l' if-shell "$is_vim" 'send-keys C-l'  'select-pane -R'
tmux_version='$(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 'C-h' select-pane -L
bind-key -T copy-mode-vi 'C-j' select-pane -D
bind-key -T copy-mode-vi 'C-k' select-pane -U
bind-key -T copy-mode-vi 'C-l' select-pane -R
bind-key -T copy-mode-vi 'C-\' select-pane -l

# vim mode keys in copy-mode
set-window-option -g mode-keys vi
# start selection with v and end with y
## tmux <= 2.3
if-shell 'tmux -V | grep -Eq "tmux 2\.[0-3]"' " \
    bind-key -t vi-copy 'v' begin-selection; \
    bind-key -t vi-copy 'y' copy-selection; \
    bind -t vi-copy y copy-pipe 'xclip -sel clip -i'; \
"

if-shell 'tmux -V | grep -Eq "tmux (2\.[4-9])|(3\.)"' " \
    bind-key -T copy-mode-vi v send-keys -X begin-selection; \
    bind-key -T copy-mode-vi y send-keys -X copy-selection; \
"
# bind-key -T copy-mode-vi y send-keys -X copy-pipe-and-cancel 'xclip -sel clip -i'

# Faster repeat time
set-option -g repeat-time 300

# Exit parent process when detaching from tmux
bind-key d detach-client -P

# Keep pwd for new splits
bind-key '"' split-window -v -c '#{pane_current_path}'
bind-key  %  split-window -h -c '#{pane_current_path}'

# Status line mirroring vim-airline with the bubblegum theme
## colour238: grey
## colour150: green
## colour110: blue
set-option -g status-style bg=colour238,fg=colour110
set-option -g message-style bg=colour238,fg=colour255
set-option -g status-left-length "80"
set-option -g status-left "#[bg=colour238,fg=colour110,bold,noitalics,nounderscore] #S "
set-option -g status-right "#[bg=colour110,fg=colour238,bold,noitalics,nounderscore] %Y-%m-%d %H:%M | #h "
set-window-option -g window-status-current-format "#[bg=colour110,fg=colour238,nobold,noitalics,nounderscore] #I:#W#{?window_zoomed_flag,*Z,} "
set-window-option -g window-status-format "#[bg=colour238,fg=colour110,nobold,noitalics,nounderscore] #I:#W#{?window_last_flag,-,} "
set-window-option -g window-status-separator ""
set-option -g pane-active-border-style fg=colour110
set-option -g pane-border-style fg=colour238