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### Options ###

# Setting the Prefix from Ctrl+b to Ctrl+s
unbind C-b
set -g prefix C-s
#set -g prefix M-Space

# Ensure that we can send Ctrl+s to other apps
bind C-s send-prefix

# Send the prefix to client inside window (nested tmux)
#bind-key -n C-a send-prefix
is_vim="ps -o state= -o comm= -t '#{pane_tty}' | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
bind -n C-a if-shell "$is_vim" "send-keys C-a" "send-prefix"

# Disable local tmux keys (nested tmux)
bind -T root F12 \
  set prefix None \;\
  set key-table off \;\
  if -F '#{pane_in_mode}' 'send-keys -X cancel' \;\
  refresh-client -S \;\

bind -T off F12 \
  set -u prefix \;\
  set -u key-table \;\
  refresh-client -S

# Setting the delay between Prefix and Command
set -sg escape-time 10
#set-option -sg escape-time 10

# Reload tmux with <Prefix>r
bind r source-file ~/.config/tmux/tmux.conf \; display "Reloaded!"

# Use <Prefix>L to clear terminal
bind -r L send-keys 'C-l'

# Rename current window (Ctrl + A, A)
bind R rename-window '' \; \
        command-prompt -I "#W" "rename-window -- '%%'"

# Renumber all windows when one is killed
set -g renumber-windows on

# Mouse
set -g mouse on
#set -g mouse-select-pane on
#set -g mouse-resize-pane on
#set -g mouse-select-window on

# Scrollback
#set -g history-limit 10000

# Sane scrolling
set -g terminal-overrides 'xterm*:smcup@:rmcup@'

# Sane scrolling
set -g terminal-overrides 'xterm*:smcup@:rmcup@'
bind -n WheelUpPane {
  if -F '#{==:#{window_name},nvim}' {
        #send-keys -M
        send-keys Up
    } {
        copy-mode -e
    }
}
bind -n WheelDownPane {
  if -F '#{==:#{window_name},nvim}' {
        #send-keys -M
        send-keys Down
    } {
        copy-mode -e
    }
}

# Shift up/down copy-mode without prefix
bind-key -n S-Up copy-mode \; send-key Up
bind-key -n S-Down copy-mode \; send-key Down
bind-key -n Pageup copy-mode \; send-key Pageup
bind-key -n Pagedown copy-mode \; send-key Pagedown
is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
#bind -n M-k if-shell "$is_vim" "send-keys Pageup" "copy-mode -u"
bind -n Pageup if-shell "$is_vim" "send-keys Pageup" "copy-mode -u"
bind -n S-Pageup if-shell "$is_vim" "send-keys Pageup" "copy-mode -u"
bind -n S-Pagedown send-keys Pagedown
#bind -n M-j send-keys Pagedown

# Focus events, allow supported requests from applications to passthrough/run in tmux
set-option -g focus-events on

# Update the TERM variable of terminal emulator when creating a new session or attaching a existing session
set -g update-environment 'DISPLAY SSH_ASKPASS SSH_AGENT_PID SSH_CONNECTION WINDOWID XAUTHORITY TERM'


#――――――――――――――――――――――――――――――――――――――――――

### Window Movement/Control ###

# Aggressive resizing, useful when using "grouped sessions" and multi-monitor setup
setw -g aggressive-resize on

# Popup scratch session
#bind -n M-g display-popup -E "tmux new-session -A -s scratch"

# Toggle popup scratch session
bind-key -n M-g if-shell -F '#{==:#{session_name},note}' {
detach-client
} {
display-popup -E "tmux new-session -A -s note"
}

# Non-popup
#bind C-k new-window -n "session-switcher" "\
#    tmux list-sessions -F '#{?session_attached,,#{session_name}}' |\
#    sed '/^$/d' |\
#    fzf --reverse --header jump-to-session --preview 'tmux capture-pane -pt {}'  |\
#    xargs tmux switch-client -t"

# List sessions
bind -n M-f display-popup -E "\
    tmux list-sessions -F '#{?session_attached,,#{session_name}}' |\
    sed '/^$/d' |\
    fzf --reverse --header jump-to-session --preview 'tmux capture-pane -pt {}'  |\
    xargs tmux switch-client -t"

# Quick window select
bind -n M-? list-keys
bind -n M-0 select-window -t :=0
bind -n M-1 select-window -t :=1
bind -n M-2 select-window -t :=2
bind -n M-3 select-window -t :=3
bind -n M-4 select-window -t :=4
bind -n M-5 select-window -t :=5
bind -n M-6 select-window -t :=6
bind -n M-7 select-window -t :=7
bind -n M-8 select-window -t :=8
bind -n M-9 select-window -t :=9


#――――――――――――――――――――――――――――――――――――――――――

### Pane Movement/Control ###

# Smart pane switching with awareness of Vim splits.
# See: https://github.com/christoomey/vim-tmux-navigator
# Navigate across tmux-vim
is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"

# {{{ keybinds: select-pane
bind -Tnav h   select-pane -L
bind       h   select-pane -L
bind -Tnav C-h select-pane -L
bind       C-h select-pane -L
bind -Tnav j   select-pane -D
bind       j   select-pane -D
bind -Tnav C-j select-pane -D
bind       C-j select-pane -D
bind -Tnav k   select-pane -U
bind       k   select-pane -U
bind -Tnav C-k select-pane -U
bind       C-k select-pane -U
bind -Tnav l   select-pane -R
bind       l   select-pane -R
bind -Tnav C-l select-pane -R
bind       C-l select-pane -R
# keybinds: select-pane }}}

# {{{ keybinds: split-window
bind -Tnav "\\" split-window -h  -c "#{pane_current_path}" # vertical
bind       "\\" split-window -h  -c "#{pane_current_path}" # vertical
bind -Tnav "|"  split-window -fh -c "#{pane_current_path}" # full vertical
bind       "|"  split-window -fh -c "#{pane_current_path}" # full vertical
bind -Tnav "-"  split-window -v  -c "#{pane_current_path}" # horizontal
bind       "-"  split-window -v  -c "#{pane_current_path}" # horizontal
bind -Tnav "_"  split-window -fv -c "#{pane_current_path}" # full horizontal
bind       "_"  split-window -fv -c "#{pane_current_path}" # full horizontal
# keybinds: split-window }}}

# {{{ keybinds: resize-pane
bind -r -Tnav M-h resize-pane -L 10
bind -r       M-h resize-pane -L 10
bind -r -Tnav M-j resize-pane -D 5
bind -r       M-j resize-pane -D 5
bind -r -Tnav M-k resize-pane -U 5
bind -r       M-k resize-pane -U 5
bind -r -Tnav M-l resize-pane -R 10
bind -r       M-l resize-pane -R 10
# keybinds: resize-pane }}}

# Hide a pane and bring it back with <Prefix>! and <Prefix>@ respectively
bind-key ! break-pane -d -n _hidden_pane
bind-key @ join-pane -s $.0

# Send Pane to another session/window
bind-key = command-prompt -p "send pane to:"  "join-pane -t '%%'"


#――――――――――――――――――――――――――――――――――――――――――

### Copy Mode (Copy/Paste) ###

# Set Vi copy mode, use <prefix>[ to enter copy mode
setw -g mode-keys vi # `<prefix>:list-keys -T copy-mode-vi` to confirm

# Change selection <space> and enter to vi keybinding
bind-key -T copy-mode-vi 'v' send -X begin-selection
bind-key -T copy-mode-vi 'y' send -X copy-selection-and-cancel

# Copy to system clipboard (requires xclip)
if-shell -b 'echo $XDG_SESSION_TYPE | grep -q x11' "\
    bind-key -T copy-mode-vi 'y' send-keys -X copy-pipe-and-cancel 'xclip -in -selection clipboard > /dev/null'; \
    bind-key -T copy-mode-vi MouseDragEnd1Pane send-keys -X copy-pipe-and-cancel 'xclip -in -selection clipboard > /dev/null'; \
    bind-key C-M-v run 'xclip -out -selection clipboard | tmux load-buffer - ; tmux paste-buffer'"

# Wayland support
if-shell -b 'echo $XDG_SESSION_TYPE | grep -q wayland' "\
    bind-key -T copy-mode-vi 'y' send-keys -X copy-pipe-and-cancel 'wl-copy'; \
    bind-key -T copy-mode-vi MouseDragEnd1Pane send-keys -X copy-pipe-and-cancel 'wl-copy'; \
    bind-key C-p run 'wl-paste --no-newline | tmux load-buffer - ; tmux paste-buffer'" "\
    \
    bind-key -T copy-mode-vi 'y' send-keys -X copy-pipe-and-cancel 'cat - >/dev/clipboard'; \
    bind-key -T copy-mode-vi MouseDragEnd1Pane send-keys -X copy-pipe-and-cancel 'cat - >/dev/clipboard'; \
    bind-key C-M-v run 'cat /dev/clipboard | tmux load-buffer - ; tmux paste-buffer'"

#

### Colors ###

## Assume external terminal supports the 256 colors palette (when TERM=xterm-256color)
#set -sa terminal-features ",xterm-256color:256"
## Assume external terminal supports RGB colors (when TERM=xterm-256color)
#set -sa terminal-features ",xterm-256color:RGB"
#
## Set TERM for proper colors
#set -g default-terminal "tmux-256color"
set -g default-terminal "xterm-256color"


# Set 256 color terminal
#set-option -sa terminal-overrides ",tmux-256color:Tc"
#set-option -sa terminal-overrides ",xterm*:Tc,alacritty*:Tc"

# Colors for pane borders(default)
setw -g pane-border-style fg=white
setw -g pane-active-border-style fg=green

# Active pane normal, other shaded out
setw -g window-style fg=colour240
setw -g window-active-style fg=white


#

### Status ###

set -g status-position bottom # [top, bottom]
set -g status on
#set -g status-interval 1
set -g status-interval 500
set -g status-style fg=#50fa7b,bg=default

## Left
#set -g status-left ""
set -g status-left-length 60
#set -g status-left "#[fg=#50fa7b,bg=default]#[bg=#50fa7b,fg=black] ❐ #S #[fg=#50fa7b,bg=default]"
set -g status-left "#(cat ~/.vi-mode | awk '/-- NORMAL --/ {print \"#[fg=#39BAE6]#[bg=default]#[bg=#39BAE6,fg=#000000]  ❐ #S  #[fg=#39BAE6,bg=default]\"} /-- INSERT --/ {print \"#[fg=#50fa7b]#[bg=default]#[bg=#50fa7b,fg=#000000]  ❐ #S  #[fg=#50fa7b,bg=default]\"}')"

## Centre
#set -g window-status-current-format "#[bg=default,fg=#50fa7b]#[fg=black,bg=#50fa7b] #I:#W #[bg=default,fg=#50fa7b]"
set -g window-status-current-format "#(cat ~/.vi-mode | awk '/-- NORMAL --/ {print \"#[fg=#39BAE6]#[bg=default]#[fg=#000000,bg=#39BAE6] #I:#W #[bg=default,fg=#39BAE6]\"} /-- INSERT --/ {print \"#[fg=#50fa7b]#[bg=default]#[fg=#000000,bg=#50fa7b] #I:#W #[bg=default,fg=#50fa7b]\"}')"
set -g status-justify absolute-centre

## Right
set-option -g status-right ""
set -g status-right-length 60
#set -g status-right "#[fg=#50fa7b,bg=default] #{?client_prefix,#[reverse] Prefix #[noreverse] ,} #[bg=default,fg=#50fa7b]#[bg=#50fa7b,fg=black] %H:%M #[bg=default,fg=#50fa7b]"
local_keys_off="#[fg=#50fa7b,bg=default]#([ $(tmux show-option -qv key-table) = 'off' ] && echo 'OFF')#[default]"
set -g status-right "$local_keys_off #(cat ~/.vi-mode | awk '/-- NORMAL --/ {print \"#[fg=#50fa7b,bg=default] #{?client_prefix,#[reverse] Prefix #[noreverse] ,} #[fg=#39BAE6]#[bg=default]#[bg=#39BAE6,fg=#000000]  %H:%M  #[bg=default,fg=#39BAE6]\"} /-- INSERT --/ {print \"#[fg=#39BAE6,bg=default] #{?client_prefix,#[reverse] Prefix #[noreverse] ,} #[fg=#50fa7b]#[bg=default]#[bg=#50fa7b,fg=#000000]  %H:%M  #[bg=default,fg=#50fa7b]\"}')"

#set -g status-right "#[fg=white,bg=black]#(cat ~/.vi-mode)"
#set -g status-right "#[fg=white,bg=black]#(cat ~/.vi-mode | awk '/-- NORMAL --/ {print \"#[fg=blue]#[bg=black]-- NORMAL --\"} /-- INSERT --/ {print \"#[fg=green]#[bg=black]-- INSERT --\"}')"

## Reload Status with IP addr, Cpu, Mem and Date
bind a run-shell ~/.config/tmux/tmux-toggle-option.sh

## Reload Config/Status silently
bind b source-file ~/.config/tmux/tmux.conf

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


#――――――――――――――――――――――――――――――――――――――――――

### Plugin Install ###

set -g @plugin "tmux-plugins/tpm"
#set -g @plugin "tmux-plugins/tmux-sensible"
set -g @plugin "tmux-plugins/tmux-resurrect"
set -g @plugin "tmux-plugins/tmux-continuum"
set -g @plugin "christoomey/vim-tmux-navigator"
#set -g @plugin "tmux-plugins/tmux-yank"
#set -g @plugin 'srdusr/tmux-vi-mode'
#set -g @plugin 'vi-mode ~/.config/tmux/plugins/vi-mode.sh'


#――――――――――――――――――――――――――――――――――――――――――

### Plugins Settings ###

# Plugin to save and restore tmux sessions after restart
# * Save with: <Prefix> + Ctrl-s
# * Restore with: <Prefix> + Ctlr-r
# Change default save and restore keybindings
  set -g @resurrect-save "W" # <Prefix> + W
  set -g @resurrect-restore "E" # <Prefix> + E

# Restore vim and nvim sessions as well
# For vim:
  set -g @resurrect-strategy-vim "session"
# For neovim:
  set -g @resurrect-strategy-nvim "session"

# Automatic restore
  #set -g @continuum-restore "on"
  #set -g @continuum-boot "on"

# Restore Panes
  set -g @resurrect-capture-pane-contents "on"

# This is a hook for tmux-resurrect which tells it to kill session 0 before restoring the panels
  set -g @resurrect-hook-pre-restore-pane-processes "tmux switch-client -n && tmux kill-session -t=0"

# Plugin uninstall
  # Delete or comment out the plugin in .tmux.conf.
  # Press <prefix> + alt + u to remove the plugin.

# TMUX plugin manager (keep at the bottom of tmux.conf)
  #run "~/.config/tmux/plugins/tpm/tpm"
  if "test ! -d ~/.config/tmux/plugins/tpm" \
   "run 'git clone https://github.com/tmux-plugins/tpm ~/.config/tmux/plugins/tpm && ~/.config/tmux/plugins/tpm/bin/install_plugins'"
run -b "~/.config/tmux/plugins/tpm/tpm"