.tmux.conf

set-option -g default-shell /bin/zsh

# initial setup
set -g status-keys vi

# Pass xterm-keys to the terminal
set-window-option -g xterm-keys on

# remap prefix from 'C-b' to 'C-a'
unbind C-b
set-option -g prefix C-a
bind-key C-a send-prefix

# split horizontal panes using pipe or backslash with same path as current pane
bind | split-window -h -c '#{pane_current_path}'
bind '\' split-window -h -c '#{pane_current_path}'

# split vertical panes using underscore or dash with same path as current pane
bind _ split-window -v -c '#{pane_current_path}'
bind - split-window -v -c '#{pane_current_path}'
unbind '"'


# Resize panes with HJKL
bind-key -r H resize-pane -L 5
bind-key -r J resize-pane -D 5
bind-key -r K resize-pane -U 5
bind-key -r L resize-pane -R 5

# Swap window tabs
bind-key S-Left swap-window -t -1
bind-key S-Right swap-window -t +1

# Start windows and panes at index 1, not 0
set -g base-index 1
setw -g pane-base-index 1

# Mouse mode for those emergencies...
set -g mouse on

# tmux 2.9 introduced breaking changes to style configuration
# conditionally applies using newer syntax but also backwards compatible

# tmux >= v/2.9
if-shell "tmux -V | awk '{exit !($2 >= \"2.9\")}'" \
	"\
	set -g pane-border-style fg=colour235; \
	set -g pane-active-border-style fg=cyan; \
	set -g message-style bg=black,fg=yellow; \
	set -g status-style bright,bg=colour235,fg=yellow; \
	setw -g window-status-current-style bg=yellow,fg=black; \
	"

# tmux >= v/2.8
# Spread panes out evenly
if-shell "tmux -V | awk '{exit !($2 >= \"2.8\")}'" \
    "\
    bind = select-layout -E; \
    unbind-key E; \
    "


# tmux < v/2.9
if-shell "tmux -V | awk '{exit !($2 < \"2.9\")}'" \
	"\
	set-option -g pane-border-fg colour235; \
	set-option -g pane-active-border-fg cyan; \
	set-option -g message-bg black; \
	set-option -g message-fg yellow; \
	set-option -g status-bg colour235; \
	set-option -g status-fg yellow; \
	set-option -g status-attr bright; \
	set-window-option -g window-status-current-bg yellow; \
	set-window-option -g window-status-current-fg black; \
	"

# switch panes without using prefix
bind -n M-h select-pane -L
bind -n M-l select-pane -R
bind -n M-k select-pane -U
bind -n M-j select-pane -D

# Fast toggle between last window (normally prefix-l)
bind ^space last-window

# Auto renumber windows after closing one
set-option -g renumber-windows on

# set scrollback history to 10000 (10k)
set -g history-limit 10000

# make tmux display things in 256 colors
set -g default-terminal "screen-256color"

# dynamically update window titles
set -g set-titles on

# Report focus events
set -g focus-events on

# but don't change if window title named manually
set -w -g automatic-rename off

# re-source this tmux conf file
bind r source-file ~/.tmux.conf \; display "Reloaded!"

 # shorten command delay
set -sg escape-time 1

# ----------------------
# Status Bar
# -----------------------
set-option -g status on                # turn the status bar on
set -g status-interval 1               # set update frequencey (default 15 seconds)
set -g status-justify centre           # center window list for clarity

# move status bar to the top
set-option -g status-position top

# clock
set-window-option -g clock-mode-colour colour76 #green

# show session name, window & pane number, date and time on right side of
# status bar
set -g status-left-length 40
set -g status-right-length 50
set -g status-right "#[fg=cyan]$USER@#h #[fg=yellow] %m-%d-%y #[fg=green] #(date | awk '{print $4}') "

# use vim keybindings
setw -g mode-keys vi

# Paste the contents of the last yank
bind-key 'p' paste-buffer

# tmux >= v/2.4
if-shell "tmux -V | awk '{exit !($2 >= \"2.4\")}'" \
	"\
	bind-key -T copy-mode-vi 'V' send-keys -X select-line; \
	bind-key -T copy-mode-vi 'v' send-keys -X begin-selection; \
	bind-key -T copy-mode-vi 'y' send-keys -X copy-pipe-and-cancel 'xclip -in -selection clipboard'; \
	bind-key -T copy-mode-vi 'r' send-keys -X rectangle-toggle; \
	"

# tmux < v/2.4
if-shell "tmux -V | awk '{exit !($2 < \"2.4\")}'" \
	"\
	bind-key -t vi-copy 'v' begin-selection; \
	bind-key -t vi-copy 'y' copy-selection; \
	bind-key -t vi-copy 'V' rectangle-toggle; \
	set -g status-utf8 on; \
	set -g utf8; \
	set-window-option -g utf8 on; \
	"

# Fix for weird MacOS issues with accessing system clipboard
# Fix requires install of 'reattach-to-user-namespace' which can be obtained through Homebrew
if-shell "type 'reattach-to-user-namespace' >/dev/null" "set -g default-command 'reattach-to-user-namespace -l $SHELL'"


set -g @yank_selection 'primary'


# 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"

# Restore clear screen
bind C-l send-keys 'C-l'

# Tmux Session Restoration
# set -g @continuum-restore 'on'

# Plugins
set -g @plugin 'tmux-plugins/tpm'
set -g @plugin 'tmux-plugins/tmux-sensible'
set -g @plugin 'tmux-plugins/tmux-yank'
set -g @plugin 'tmux-plugins/tmux-resurrect'
# set -g @plugin 'tmux-plugins/tmux-continuum'

#Install 	-- prefix + I
#Update 	-- prefix + u
#Uninstall 	-- prefeix + alt + u

run-shell '~/.tmux/plugins/tmux-yank/yank.tmux'

# Initialize TMUX plugin manager (keep this line at the very bottom of tmux.conf)
run '~/.tmux/plugins/tpm/tpm'