# Enable utf-8
set -g utf8 on
set -g status-utf8 on

# Use vim keybindings in copy mode
set -g mode-keys vi

# Change prefix to C-Space
unbind C-b
set -g prefix C-Space
bind Space send-prefix

# Address vim mode switching delay
set -s escape-time 0

# Increase scrollback buffer size
set -g history-limit 50000

# Set tmux messages display time to 4 seconds
set -g display-time 4000

# Refresh 'status-left' and 'status-right' more often
set -g status-interval 5

# Upgrade $TERM
set -g default-terminal "screen-256color"

# Focus events enabled for terminals that support them
set -g focus-events on

# TODO: Change this comment to something that explains the setting
# super useful when using "grouped sessions" and multi-monitor setup
setw -g aggressive-resize on

# Start window & pane index at 1
set -g pane-base-index 1

# Enable mouse support
set-option -g mouse on

# Enable cursor shape per pane in VTE compatible terminals
if -b '[ "`uname`" != "Darwin" ]' \
  "set -ga terminal-overrides ',*:Ss=\E[%p1%d q:Se=\E[2 q'"

# Set only on OS X where it's required
if -b '[ "`uname`" = "Darwin" ]' \
  "set -g default-command 'reattach-to-user-namespace -l $SHELL'"

# Make new splits open in current directory
bind "\"" split-window -c "#{pane_current_path}"
bind "%" split-window -h -c "#{pane_current_path}"

# Integrate pane selection with vim
is_vim='echo "#{pane_current_command}" | grep -iqE "(^|\/)g?(view|n?vim?)(diff)?$"'
bind -n C-h if-shell "$is_vim" "send-keys C-h" "select-pane -L"
bind -n C-j if-shell "$is_vim" "send-keys C-j" "select-pane -D"
bind -n C-k if-shell "$is_vim" "send-keys C-k" "select-pane -U"
bind -n C-l if-shell "$is_vim" "send-keys C-l" "select-pane -R"
bind -n C-\ if-shell "$is_vim" "send-keys C-\\" "select-pane -l"

# Integrate urlview
bind-key u capture-pane \; split-window "tmux show-buffer | urlview -"

# Enter copy mode with C-U
bind-key C-u copy-mode -u

# Left status style
set-window-option -g status-left " #S"
set-window-option -g status-left-fg colour240
set-window-option -g status-left-bg colour233

# Centre status style
set-window-option -g status-fg colour240
set-window-option -g status-bg colour233

# Right status style
set-window-option -g status-right "%a %d-%m-%y %H:%M "
set-window-option -g status-right-fg white
set-window-option -g status-right-bg colour233

# Active window status style
set-window-option -g window-status-current-format " #I: #W"
set-window-option -g window-status-current-fg white
set-window-option -g window-status-current-bg colour233

# Inactive window status style
set-window-option -g window-status-format " #I: #W"
set-window-option -g window-status-fg colour240
set-window-option -g window-status-bg colour233

# Active pane border
set-option -g pane-active-border-fg colour235
set-option -g pane-active-border-bg colour235

# Inactive pane border
set-option -g pane-border-fg colour233
set-option -g pane-border-bg colour233

# Command line window list selection
set-window-option -g mode-style fg=colour233,bg=colour30
set-option -g message-style fg=colour233,bg=colour30