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

# start with window 1 (instead of 0)
set -g base-index 1

# start with pane 1
set -g pane-base-index 1

# split panes using | and -, make sure they open in the same path
bind | split-window -h -c "#{pane_current_path}"
bind - split-window -v -c "#{pane_current_path}"

unbind '"'
unbind %

# open new windows in the current path
bind c new-window -c "#{pane_current_path}"

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

# shorten command delay
set -sg escape-time 1

# Increase scrollback buffer size
set -g history-limit 131072

# don't rename windows automatically
set-option -g allow-rename off

# mouse control (clickable windows, panes, resizable panes)
set -g mouse on
set -g focus-events on

# 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-Left'  if-shell "$is_vim" 'send-keys C-Left'  'select-pane -L'
bind-key -n 'C-Down'  if-shell "$is_vim" 'send-keys C-Down'  'select-pane -D'
bind-key -n 'C-Up'    if-shell "$is_vim" 'send-keys C-Up'    'select-pane -U'
bind-key -n 'C-Right' if-shell "$is_vim" 'send-keys C-Right' '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-Left'  select-pane -L
bind-key -T copy-mode-vi 'C-Down'  select-pane -D
bind-key -T copy-mode-vi 'C-Up'    select-pane -U
bind-key -T copy-mode-vi 'C-Right' select-pane -R

# Pane resizing with arrow keys
bind Left resize-pane -L 10
bind Down resize-pane -D 10
bind Up resize-pane -U 10
bind Right resize-pane -R 10

# Move windows back/forward
bind -n S-left swap-window -t -1
bind -n S-right swap-window -t +1
bind m command-prompt -p "Merge pane to:"  "join-pane -t '%%'"
bind M command-prompt -p "Merge pane from:"  "join-pane -s '%%'"

bind e setw synchronize-panes on \; display "Synchronize panes ON (E: off)"
bind E setw synchronize-panes off \; display "Synchronize panes OFF (e: on)"

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

bind 0 select-pane -t 0
bind 1 select-pane -t 1
bind 2 select-pane -t 2
bind 3 select-pane -t 3
bind 4 select-pane -t 4
bind 5 select-pane -t 5
bind 6 select-pane -t 6
bind 7 select-pane -t 7
bind 8 select-pane -t 8
bind 9 select-pane -t 9

bind P paste-buffer
bind -T copy-mode-vi v send-keys -X begin-selection
bind -T copy-mode-vi y send-keys -X copy-selection
bind -T copy-mode-vi r send-keys -X rectangle-toggle

# Save scrollback buffer to a file
bind S command-prompt -p 'Save history to filename:' -I '/tmp/tmux.history' 'capture-pane -S - -E -; save-buffer %1 ; delete-buffer'

# Session selector
bind T display-popup -E "tmux switch-client -t (tmux list-sessions | fzf --exact | awk -F':' '{print $1}')"

# Last command output
set -g @command-capture-key t
set -g @command-capture-prompt-pattern '] % '
set -g @command-capture-editor-cmd 'nvim -R'

# Fuzzback
set -g @fuzzback-popup 1
set -g @fuzzback-popup-size '90%'

# This effects color rendering and typing on terminal.
set-option -g default-terminal "tmux-256color"

## Status Bar settings
# Gruvbox dark color scheme
set-option -g status "on"
# Default statusbar color
set-option -g status-style bg=colour237,fg=colour223 # bg=bg1, fg=fg1
# Default window title colors
set-window-option -g window-status-style bg=colour214,fg=colour237 # bg=yellow, fg=bg1
# Default window with an activity alert
set-window-option -g window-status-activity-style bg=colour237,fg=colour248 # bg=bg1, fg=fg3
# Active window title colors
set-window-option -g window-status-current-style bg=red,fg=colour237 # fg=bg1
# Pane border
set-option -g pane-active-border-style fg=colour250 #fg2
set-option -g pane-border-style fg=colour237 #bg1
# Message infos
set-option -g message-style bg=colour239,fg=colour223 # bg=bg2, fg=fg1
# Writing commands inactive
set-option -g message-command-style bg=colour239,fg=colour223 # bg=fg3, fg=bg1
# Pane number display
set-option -g display-panes-active-colour colour250 #fg2
set-option -g display-panes-colour colour237 #bg1
# Clock
set-window-option -g clock-mode-colour colour109 #blue
# Bell
set-window-option -g window-status-bell-style bg=colour167,fg=colour235 # bg=red, fg=bg
# Theme settings mixed with colors (unfortunately, but there is no cleaner way)
set-option -g status-justify "centre"
set-option -g status-left-style none
set-option -g status-left-length "80"
set-option -g status-right-style none
set-option -g status-right-length "80"
set-window-option -g window-status-separator ""
set-option -g status-left "#[bg=colour248,fg=colour237] #S #[bg=colour237,fg=colour241,nobold,noitalics,nounderscore]"
set-option -g status-right "#[bg=colour248,fg=colour237] %H:%M "
set-window-option -g window-status-current-format "#[bg=colour214,fg=colour237,nobold,noitalics,nounderscore]#[bg=colour214,fg=colour239] #I #[bg=colour214,fg=colour239,bold] #W #[bg=colour237,fg=colour214,nobold,noitalics,nounderscore]"
set-window-option -g window-status-format "#[bg=colour239,fg=colour237,noitalics]#[bg=colour239,fg=colour223] #I #[bg=colour239,fg=colour223] #W #[bg=colour237,fg=colour239,noitalics]"

# Plugins
run-shell '~/.tmux/plugins/tmux-yank/yank.tmux'
run-shell '~/.tmux/plugins/tmux-open/open.tmux'
run-shell '~/.tmux/plugins/tmux-butler/tmux-butler.tmux'
run-shell '~/.tmux/plugins/tmux-fuzzback/fuzzback.tmux'
run-shell '~/.tmux/plugins/tmux-cmd-capture/tmux_capture_last_command_output.tmux'