# -----------------------------------------------------------------------------
# This config is targeted for tmux 2.1+ and should be placed in $HOME.
#
# Created from several notes on the web. Thanks to everyone for sharing
# It's a work in progress
# -----------------------------------------------------------------------------

# Version 1.0.9

# -----------------------------------------------------------------------------
# Global options
# -----------------------------------------------------------------------------

# Version settings based on info from [Stack Overflow](https://stackoverflow.com/a/40902312)

run-shell 'tmux setenv -g TMUX_VERSION $(tmux -V | \
                            sed -En "s/^tmux ([0-9]+(.[0-9]+)?).*/\1/p")'

if-shell -b '[ "$(echo "$TMUX_VERSION < 2.1" | bc)" = 1 ]' " \
    set -g mouse-select-pane on; set -g mode-mouse on; \
    set -g mouse-resize-pane on; set -g mouse-select-window on; \
    set -g message-fg red; \
    set -g message-bg black; \
    set -g message-attr bright; \
    set -g window-status-bg default; \
    set -g window-status-fg default; \
    set -g window-status-current-attr bold; \
    set -g window-status-current-bg cyan; \
    set -g window-status-current-fg default; \
    set -g window-status-bell-fg red; \
    set -g window-status-bell-bg black; \
    set -g window-status-activity-fg white; \
    set -g window-status-activity-bg black"

# In version 2.1 "mouse" replaced the previous 4 mouse options
if-shell -b '[ "$(echo "$TMUX_VERSION >= 2.1" | bc)" = 1 ]' \
  "set -g mouse on"

# UTF8 is autodetected in 2.2 onwards, but errors if explicitly set
if-shell -b '[ "$(echo "$TMUX_VERSION < 2.2" | bc)" = 1 ]' \
  "set -g utf8 on; set -g status-utf8 on; set -g mouse-utf8 on"

# bind-key syntax changed in 2.4 -- selection / copy / paste
# if-shell -b '[ "$(echo "$TMUX_VERSION < 2.4" | bc)" = 1 ]' " \
#    bind-key -t vi-copy v   begin-selection; \
#    bind-key -t vi-copy V   send -X select-line; \
#    bind-key -t vi-copy C-v rectangle-toggle; \
#    bind-key -t vi-copy y   copy-pipe 'xclip -selection clipboard -in'"

if-shell -b '[ "$(echo "$TMUX_VERSION < 2.6" | bc)" = 1 ]' \
  "set -s set-clipboard on"

# Newer versions
if-shell -b '[ "$(echo "$TMUX_VERSION < 2.9" | bc)" = 1 ]' " \
   bind-key h split-window -v; \
   bind-key '\\' split-window -h; \
   unbind 'W'; \
   bind-key 'W' choose-tree -w; \
   set-window-option -g window-status-current-attr bold; \
   set-window-option -g window-status-current-fg colour223; \
   set -as terminal-overrides ',screen-256color:Ms=\E]52;%p1%s;%p2%s\007'"

if-shell -b '[ "$(echo "$TMUX_VERSION >= 2.9" | bc)" = 1 ]' \
   "set -g message-style fg=red,bg=black; \
    set -g message-style bright; \
    bind-key h split-window -v; \
    bind-key '\\' split-window -h; \
    unbind 'W'; \
    bind-key 'W' choose-tree -Zw; \
    set -g window-status-style          fg=default,bg=default; \
    set -g window-status-bell-style     fg=red,bg=black; \
    set -g window-status-activity-style fg=white,bg=black; \
    set -s set-clipboard on; \
    set -as terminal-overrides ',screen-256color:Ms=\E]52;%p1%s;%p2%s\007'"

if-shell -b '[ "$(echo "$TMUX_VERSION >= 3.2" | bc)" = 1 ]' \
   "set -as terminal-features ',screen-256color:clipboard'"


# Set a new prefix / leader key.
set -g prefix `
bind ` send-prefix

# Allow opening multiple terminals to view the same session at different sizes.
setw -g aggressive-resize on

# Remove delay when switching between Vim modes.
set -s escape-time 0

# Allow Vim's FocusGained to work when your terminal gains focus.
#   Requires Vim plugin: https://github.com/tmux-plugins/vim-tmux-focus-events
set -g focus-events on

# Add a bit more scroll history in the buffer.
set -g history-limit 50000

# Enable color support inside of tmux.
set -g default-terminal "screen-256color"

# Ensure window titles get renamed automatically.
set-window-option -g automatic-rename on
set-option -g set-titles on

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

# Enable full mouse support.
# set -g terminal-overrides 'xterm*:smcup@:rmcup@'
set -g mouse on

# Status bar optimized for Gruvbox.
set -g status-fg default
set -g status-bg default


# -----------------------------------------------------------------------------
# Key bindings
# -----------------------------------------------------------------------------

# Unbind default keys
unbind C-b
unbind '"'
unbind %

# Reload the tmux config.
bind-key r source-file ~/.tmux.conf \; display-message "Config reloaded..."

# Open ~/.tmux.conf in nano and reload settings on quit
unbind e
bind e new-window -n '~/.tmux.conf' "sh -c 'nano ~/.tmux.conf && tmux source ~/.tmux.conf'"

# Kill the session
bind-key k kill-session

# Configure copying
# use emacs mode
setw -g mode-keys emacs
set -g status-keys emacs

# Enter copy mode
bind-key 'c' copy-mode

bind-key -Tcopy-mode 'C' send-keys -X rectangle-toggle
bind-key -Tcopy-mode 'c' send -X begin-selection

bind-key -Tcopy-mode ENTER send-keys -X copy-selection-and-cancel
bind-key -Tcopy-mode C-Left send-keys -X previous-word
bind-key -Tcopy-mode C-Right send-keys -X next-word-end

# Enable copy on select. Requires xsel on the server, X11 forwarding on the terminal
# and VcXsrv installed on the workstation with clipboard enabled
# unbind -n -Tcopy-mode MouseDragEnd1Pane
# bind -Tcopy-mode MouseDragEnd1Pane send -X copy-selection-and-cancel\; run "tmux save-buffer - | xsel -ib"

unbind -n MouseDown3Pane
bind -n MouseDown3Pane run "tmux set-buffer \"$(xsel -o)\" ;tmux paste-buffer"

unbind 'w'
bind-key 'w' new-window

# Move around panes with ALT + arrow keys.
bind-key -n M-Up select-pane -U
bind-key -n M-Left select-pane -L
bind-key -n M-Down select-pane -D
bind-key -n M-Right select-pane -R

# window navigation

bind-key -n C-n new-window

unbind n
unbind p
bind-key -n M-S-Left previous-window  # select previous window
bind-key -n M-S-Right next-window     # select next window
bind Tab last-window                # move to last active window

# =====================================
# ===           Theme               ===
# =====================================

# Feel free to NOT use this variables at all (remove, rename)
# this are named colors, just for convenience
color_orange="colour166" # 208, 166
color_purple="colour134" # 135, 134
color_green="colour076" # 070
color_blue="colour39"
color_yellow="colour220"
color_red="colour160"
color_black="colour232"
color_white="colour7" # 015

# This is a theme CONTRACT, you are required to define variables below
# Change values, but not remove/rename variables itself
color_dark="$color_black"
color_light="$color_white"
color_session_text="$color_blue"
color_status_text="$color_white"
color_main="$color_orange"
color_secondary="$color_purple"
color_level_ok="$color_green"
color_level_warn="$color_yellow"
color_level_stress="$color_red"
color_window_off_indicator="colour088"
color_window_off_status_bg="colour238"
color_window_off_status_current_bg="colour254"

# =====================================
# ===    Appearence and status bar  ===
# ======================================

set -g mode-style "fg=default,bg=$color_main"

# command line style
set -g message-style "fg=$color_main,bg=$color_dark"

# status line style
set -g status-style "fg=$color_status_text,bg=$color_dark"

# window segments in status line
set -g window-status-separator ""
separator_powerline_left=""
separator_powerline_right=""

setw -g window-status-style "fg=$color_status_text,bg=$color_dark"
setw -g window-status-format " #I:#W "
#setw -g window-status-current-format "#[fg=$color_dark,bg=$color_dark]$separator_powerline_left#[default] #I:#W# #[fg=$color_main,bg=$color_main]$separator_powerline_right#[default]"
setw -g window-status-current-format "#[fg=$color_main,bg=$color_dark]$separator_powerline_left#[fg=$color_light,bg=$color_main] #I:#W #[fg=$color_main,bg=$color_dark]$separator_powerline_right#[default]"
setw -g window-status-current-style "fg=$color_light,bg=$color_main"

# when window has monitoring notification
setw -g window-status-activity-style "fg=$color_main"

# outline for active pane
setw -g pane-active-border-style "fg=$color_main"

# general status bar settings
set -g status on
set -g status-interval 5
set -g status-position bottom
set -g status-justify left
set -g status-right-length 100

#wg_user_host="#[fg=$color_secondary]#(whoami)#[default]@#H"

#set -g status-left "$wg_session"

#set -g status-right "#{prefix_highlight} $wg_is_keys_off $wg_is_zoomed | $wg_user_host | $wg_date"