# use utf-8
set -g utf8
setw -g utf8 on

# general settings
setenv -g PATH "/usr/local/bin:$PATH"
set -g default-shell $SHELL
set -g default-terminal "screen-256color"
set -g history-limit 100000
set -s escape-time 0

# window numbering
set -g base-index 1
setw -g pane-base-index 1
set -g renumber-windows on
set -g automatic-rename on

# mouse
set -g mode-mouse on
setw -g mouse-select-window on
setw -g mouse-select-pane on
setw -g mouse-resize-pane on

# act like GNU screen
unbind C-b
unbind C-a
bind C-a send-prefix
set -g prefix C-a

# act like Vim
setw -g mode-keys vi
unbind [
unbind v
bind v copy-mode
unbind p
bind p paste-buffer

# I hit this accidentally all the time
unbind C-z
bind C-z resize-pane -Z

# main window at the top, splits at the bottom
unbind =
bind = select-layout main-horizontal\; run "tmux resize-pane -t1 -y$((#{session_height} * 2/3))"

# keep pwd when splitting and creating new windows
unbind c
bind c new-window -c "#{pane_current_path}"
unbind %
bind % split-window -h -c "#{pane_current_path}"
unbind '"'
bind '"' split-window -c "#{pane_current_path}"

# copy and paste
set -g default-command "which reattach-to-user-namespace > /dev/null && reattach-to-user-namespace -l $SHELL || $SHELL"
unbind p
bind p run "tmux set-buffer $(reattach-to-user-namespace pbpaste); tmux paste-buffer"
unbind -t vi-copy v
bind -t vi-copy v begin-selection
unbind -t vi-copy y
bind -t vi-copy y copy-pipe "reattach-to-user-namespace pbcopy"
unbind -t vi-copy Enter
bind -t vi-copy Enter copy-pipe "reattach-to-user-namespace pbcopy"
unbind y
bind y run "tmux show-buffer | reattach-to-user-namespace pbcopy"

# smart pane switching with awareness of vim splits
unbind C-h
bind -n C-h run "(tmux display-message -p '#{pane_current_command}' | grep -iqE '(^|\/)vim$' && tmux send-keys C-h;    ) || tmux select-pane -L"
unbind C-j
bind -n C-j run "(tmux display-message -p '#{pane_current_command}' | grep -iqE '(^|\/)vim$' && tmux send-keys C-j;    ) || tmux select-pane -D"
unbind C-k
bind -n C-k run "(tmux display-message -p '#{pane_current_command}' | grep -iqE '(^|\/)vim$' && tmux send-keys C-k;    ) || tmux select-pane -U"
unbind C-l
bind -n C-l run "(tmux display-message -p '#{pane_current_command}' | grep -iqE '(^|\/)vim$' && tmux send-keys C-l;    ) || tmux select-pane -R"
unbind C-\\
bind -n C-\ run "(tmux display-message -p '#{pane_current_command}' | grep -iqE '(^|\/)vim$' && tmux send-keys 'C-\\'; ) || tmux select-pane -l"

# window resizing
bind -r C-h resize-pane -L
bind -r C-j resize-pane -D
bind -r C-k resize-pane -U
bind -r C-l resize-pane -R

# colors
set -g pane-border-bg colour0
set -g pane-border-fg colour10
set -g pane-active-border-bg colour0
set -g pane-active-border-fg colour1

# status line
set -g status-utf8 on
set -g status-position bottom
set -g status-bg colour10
set -g status-fg colour241
set -g status-left ''
set -g status-right '#(date +"%a %d %b %H:%M") '
set -g status-justify left
set -g window-status-format ' #I·#W'
set -g window-status-current-format ' #I·#W'
set -g window-status-current-fg colour4
set -g window-status-current-bg colour10

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

# create new session if none exists
if-shell "[[ -z $(tmux list-sessions) ]]" new-session

# local config
if-shell "[ -f ~/.tmux.conf.local ]" 'source ~/.tmux.conf.local'