# C-b already in use by vim for page up. Use screen's prefix.
set -g prefix C-a
unbind C-b
bind C-a send-prefix
# Make ^a a send ^a (Useful in minicom)
bind a send-prefix

# No delay for escape key press (vim mode changes)
set -sg escape-time 0

# Copy mode more intuitive for vim users, use v and y
# From https://dev.to/iggredible/the-easy-way-to-copy-text-in-tmux-319g
# See https://ianthehenry.com/posts/how-to-configure-tmux/ for copy-pipe tips.
bind -T copy-mode-vi v send -X begin-selection
bind -T copy-mode-vi C-v send -X rectangle-toggle
bind -T copy-mode-vi y send -X copy-selection-and-cancel

# Vim style pane splitting
bind v split-window -h
bind s split-window -v

# Vim style pane selection
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

# pane sizing with capital letters
bind -r H resize-pane -L
bind -r J resize-pane -D
bind -r K resize-pane -U
bind -r L resize-pane -R

# Use Alt-vim keys without prefix key to switch panes
bind -n M-h select-pane -L
bind -n M-j select-pane -D
bind -n M-k select-pane -U
bind -n M-l select-pane -R

# These next two bind-key f and o are from: https://jyn.dev/how-i-use-my-terminal/
# 1. Do a `rg` search.
# 2. Prefix + f to enter copy mode and search backward for a file path regex.
# 3. Once found, Prefix + o to open the file in $EDITOR.
bind-key f copy-mode \; send-keys -X search-backward \
  '(^|\<|[[:space:]/])(("(~/|/)?[[:alnum:] _\.#$%&+=@-]+(/[[:alnum:] _\.#$%&+=@-]+)*"|(~/|/)?[[:alnum:]_\.#$%&+=@-]+(/[[:alnum:]_\.#$%&+=@-]+)*[[:alnum:]_\.#$%&+=@-]+):[0-9]{1,10}(:[0-9]{1,10})?)|~?/[[:alnum:]_\.#$%&+=@-]+(/[[:alnum:]_\.#$%&+=@-]+)+|[[:alnum:]_\.#$%&+=@-]+(/[[:alnum:]_\.#$%&+=@-]+){2,}'

# save the buffer, then open an editor in the current pane
bind-key -T copy-mode-vi o send-keys -X copy-pipe-and-cancel \
    'xargs -I {} tmux send-keys "${EDITOR:-vi} {}"; tmux send-keys "C-m"'

# open an app in current directory in a popup
# from https://www.youtube.com/watch?v=70cN9swORE8&t=440s
#bind o popup -E -d "#{pane_current_path}" -w 90% -h 90% "opencode"

# https://www.reddit.com/r/tmux/comments/olgte7/comment/jz4t9rc/
# Toggle scratch session.
# Create a detached session and disable the status line before attaching to it
bind b if -F '#{==:#{session_name},scratch}' { 
    detach-client 
  } { 
    if "tmux has-session -t scratch" {
      popup -E -w 90% "tmux attach -t scratch"
    } {
      popup -E -w 90% "tmux new -d -c '#{pane_current_path}' -s scratch && \
                       tmux set -t scratch status off && \
                       tmux attach -t scratch"
    }
}

# (Removed) Use Alt-arrow keys without prefix key to switch panes
# Note vim's Copilot plugin uses M-Right for "accept suggested word"
#bind -n M-Right select-pane -R

# Use prefix-! to break-pane a pane into a new window.
# Use these to join another pane to this window (choosing which pane).
bind-key S choose-window 'join-pane -v -s "%%"'
bind-key V choose-window 'join-pane -h -s "%%"'

# Use Tab to rotate full-screen panes like I do vim buffers
bind -r Tab select-pane -t .+1 \; resize-pane -Z

# Theme
set -g status-keys vi
set -g status-fg white
set -g focus-events on
set -g status-bg colour235
set -g status-left-length 10
set -g status-left "#[fg=green]#{?#{!=:#{window_panes},1},pane #P/#{window_panes},}#[default]"
set -g status-justify centre
set -g status-right '#[fg=green]%m/%d %H:%M#[default]'
setw -g mode-keys vi
setw -g automatic-rename on
setw -g aggressive-resize
# For mouse wheel scrolling, but now have to hold shift when selecting text.
set -g mouse on
set -g set-titles on
set -g set-titles-string "tmux / #T"
#set -g allow-rename on  ## ssh'ed servers may rename window to PS1, duplicating path
#setw -g window-status-current-format '#[fg=yellow]#I:#F:#T:.../#{b:pane_current_path}#[default]'
setw -g window-status-current-format '#{?#{!=:#{session_windows},1},#I:#W:,}#[fg=yellow]#{?window_zoomed_flag,Z:,}#{s\/home/dblume\~\:pane_current_path}#[default]'
setw -g window-status-format '#[fg=colour241]#I:#W#[default]'

# This allows neovim's hi htmlItalic (also used by markdown) to use italic font
# See https://wiki.dlma.com/apple#tmux-and-tmux-256color for macOS installation
set -g default-terminal "tmux-256color"

# prefix, C-Arrow doesn't work from PuTTY. Needs TERM to be xterm
set -g terminal-overrides "xterm*:kLFT5=\eOD:kRIT5=\eOC:kUP5=\eOA:kDN5=\eOB:smkx@:rmkx@"