# Layout of this conf file:
# 1. Global Settings
# 2. Plugins
# 3. Keybinds
# 4. Theme

# For rapid change prototyping, disabled normally:
# bind-key r source-file ~/.config/tmux/tmux.conf \; display-message "config reloaded."

######################
### 1. GLOBAL SETTINGS
######################

# show that activity happens but don't display a huge 'activity happening' notification
setw -g monitor-activity on
set -g visual-activity off

# Start counting windows and panes at 1
set -g base-index 1
setw -g pane-base-index 1
set -g renumber-windows on

# Terminal improvements
set-window-option -g automatic-rename on
set-option -g set-titles on
set -g mouse on
# allow truecolor support
set -g default-terminal 'xterm-256color'
set -ga terminal-overrides ',xterm-256color:Tc'
set -g status-keys vi
set-window-option -g mode-keys vi
set -g history-limit 10000

# Screen size is based on the smallest client looking at the current windows, not the smallest
# client connected to the overall session. If two clients are connected to the same session but not
# looking at the same window, why would they care about each others screen size?
setw -g aggressive-resize on

# No delay for escape key press
set -sg escape-time 0

# to enable autoread option in neovim
set-option -g focus-events on

####################
## 2. PLUGINS     ##
####################

set -g @tpm_plugins '           \
   tmux-plugins/tpm             \
   tmux-plugins/tmux-sensible   \
   christoomey/vim-tmux-navigator \
   Morantron/tmux-fingers       \
   '

set -g @fingers-key F

# make sure tpm is installed
if-shell "test ! -d $TMUX_PLUGIN_MANAGER_PATH/tpm" \
   "run 'git clone https://github.com/tmux-plugins/tpm $TMUX_PLUGIN_MANAGER_PATH/tpm && $TMUX_PLUGIN_MANAGER_PATH/tpm/bin/install_plugins'" \

# optinally add this to install plugins on each start -- adds small lag to startup
   # "run-shell $TMUX_PLUGIN_MANAGER_PATH/tpm/bin/install_plugins"

#####################
## 3. KEYBINDINGS  ##
#####################

# Unbind some defaults
unbind '"'
unbind %

# Custom modifier key
set -g prefix C-a
unbind-key C-b
bind-key -r C-a send-prefix

# Window Navigation - Prefix + Vim Keys
bind-key -r C-h select-window -t :-
bind-key -r C-l select-window -t :+

# Resize Panes
bind-key -r H resize-pane -L 3
bind-key -r J resize-pane -D 1
bind-key -r K resize-pane -U 1
bind-key -r L resize-pane -R 3

bind-key -r C-H resize-pane -L 10
bind-key -r C-J resize-pane -D 5
bind-key -r C-K resize-pane -U 5
bind-key -r C-L resize-pane -R 10

# Send Pane to a new window (but stay on current window), join it back into the current window
bind-key B break-pane -d
bind-key C-b command-prompt -p "join pane from: "  "join-pane -h -s '%%'"

# Swap panes within the current window (swaps pane # entered with currently selected pane)
bind-key b display-panes\; command-prompt -p "pane #: "  "swap-pane -t '%%'"

# Kill tabs quicker
bind-key x kill-pane
bind-key C-x kill-window

# Split Window into panes - automatically handled by plugin
bind-key '\' split-window -h -c '#{pane_current_path}'
bind-key '-' split-window -v -c '#{pane_current_path}'

# Open a sessions chooser
bind C-s split-window -v "tmux list-sessions | sed -E 's/:.*$//' | grep -v \"^$(tmux display-message -p '#S')\$\" | fzf --reverse | xargs tmux switch-client -t"

# Make visual selections act a little more like vim
bind-key -T copy-mode-vi v send -X begin-selection
bind-key -T copy-mode-vi V send -X select-line
bind-key -T copy-mode-vi y send -X copy-pipe-and-cancel 'wl-copy' \; send -X rectangle-off
bind-key -T copy-mode-vi 'C-v' send -X begin-selection \; send -X rectangle-on

#####################
## 4. THEME        ##
#####################

# Status update interval
set -g status-interval 1
# Clock mode
set -g clock-mode-colour colour24
set -g clock-mode-style 24

# This tmux statusbar config was created by tmuxline.vim
# on Wed, 13 Mar 2019

set -g message-command-style bg="#2e2e2e",fg="#c8c8c8"
set -g message-style bg="#2e2e2e",fg="#c8c8c8"
set -g pane-active-border-style fg="#2e2e2e"
set -g pane-border-style fg="#2e2e2e"
set -g status-justify "centre"
set -g status "on"
set -g status-style "none"
set -g status-style "none"
set -g status-left-length "100"
set -g status-right-length "100"
setw -g window-status-style fg="#c8c8c8",bg="#2e2e2e","none"
setw -g window-status-activity-style bg="#2e2e2e",fg="#c8c8c8","underscore"
setw -g window-status-separator ""
set -g status-left "#[fg=#c8c8c8,bg=#2e2e2e] #S #[fg=#2e2e2e,bg=#2e2e2e,nobold,nounderscore,noitalics]#[fg=#c8c8c8,bg=#2e2e2e] #I:#P #[fg=#2e2e2e,bg=#2e2e2e,nobold,nounderscore,noitalics]#[fg=#c8c8c8,bg=#2e2e2e] #[fg=#2e2e2e,bg=#2e2e2e,nobold,nounderscore,noitalics]"
set -g status-right "#[fg=#2e2e2e,bg=#2e2e2e,nobold,nounderscore,noitalics] #[fg=#c8c8c8,bg=#2e2e2e] #{?client_prefix,#[fg=colour232]#[bg=brightblue],} #(whoami) #[fg=#2e2e2e,bg=#2e2e2e,nobold,nounderscore,noitalics]#[fg=#c8c8c8,bg=#2e2e2e] %d-%b-%y #[fg=#2e2e2e,bg=#2e2e2e,nobold,nounderscore,noitalics]#[fg=#c8c8c8,bg=#2e2e2e] #H "
setw -g window-status-format "#[fg=#2e2e2e,bg=#2e2e2e,nobold,nounderscore,noitalics]#[default] #I #W #[fg=#2e2e2e,bg=#2e2e2e,nobold,nounderscore,noitalics]"
setw -g window-status-current-format "#[fg=#2e2e2e,bg=#2e2e2e,nobold,nounderscore,noitalics]#[fg=#c8c8c8,bg=#2e2e2e]    #I #W #[fg=#2e2e2e,bg=#2e2e2e,nobold,nounderscore,noitalics]"

########################
## 5. Nested Sessions ##
########################
# from: https://github.com/samoshkin/tmux-config/blob/master/tmux/tmux.conf
# all credit to samoshkin

# Session is considered to be remote when we ssh into host
if-shell 'test -n "$SSH_CLIENT"' \
    'source-file $XDG_CONFIG_HOME/tmux/tmux.remote.conf'

# We want to have single prefix key "C-a", usable both for local and remote session
# we don't want to "C-a" + "a" approach either
# Idea is to turn off all key bindings and prefix handling on local session,
# so that all keystrokes are passed to inner/remote session

# see: toggle on/off all keybindings · Issue #237 · tmux/tmux - https://github.com/tmux/tmux/issues/237

# Also, change some visual styles when window keys are off
bind -T root F12  \
    set prefix None \;\
    set key-table off \;\
    set status-style fg="colour245",bg="colour238" \;\
    set window-status-current-format "#[fg=$color_window_off_status_bg,bg=$color_window_off_status_current_bg]$separator_powerline_right#[default] #I:#W# #[fg=$color_window_off_status_current_bg,bg=$color_window_off_status_bg]$separator_powerline_right#[default]" \;\
    set window-status-current-style fg="colour232",bg="colour254","bold" \;\
    if -F '#{pane_in_mode}' 'send-keys -X cancel' \;\
    refresh-client -S \;\

bind -T off F12 \
  set -u prefix \;\
  set -u key-table \;\
  set -u status-style \;\
  set -u window-status-current-style \;\
  set -u window-status-current-format \;\
  refresh-client -S

run -b "$TMUX_PLUGIN_MANAGER_PATH/tpm/tpm"