tmux.conf

# Set the TMUX_CONF variable to track the location of the current tmux configuration file.
# Set the TMUX_PROGRAM variable to track the path of the tmux binary being used.
%if #{==:#{TMUX_PROGRAM},}
  run 'TMUX_PROGRAM="$(LSOF=$(PATH="$PATH:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin" command -v lsof); \
  $LSOF -b -w -a -d txt -p #{pid} -Fn 2>/dev/null | perl -n -e "if (s/^n((?:.(?!dylib$|so$))+)$/\1/g && \
  s/(?:\s+\([^\s]+?\))?$//g) { print; exit } } exit 1; {" || readlink "/proc/#{pid}/exe" 2>/dev/null)"; \
  {[ -f "$TMUX_PROGRAM" ] && [ -x "$TMUX_PROGRAM" ]} || TMUX_PROGRAM="$(command -v tmux || printf tmux)"; \
  "$TMUX_PROGRAM" -S #{socket_path} set-environment -g TMUX_PROGRAM "$TMUX_PROGRAM"'
%endif

# Set the TMUX_SOCKET variable to track the socket path being used by tmux.
%if #{==:#{TMUX_SOCKET},}
  run '"$TMUX_PROGRAM" -S #{socket_path} set-environment -g TMUX_SOCKET "#{socket_path}"'
%endif

# Set the TMUX_CONF variable to track the location of the tmux configuration file.
%if #{==:#{TMUX_CONF},}
  run '"$TMUX_PROGRAM" set-environment -g TMUX_CONF $(for conf in "$HOME/.tmux.conf" "$XDG_CONFIG_HOME/tmux/tmux.conf" \
  "$HOME/.config/tmux/tmux.conf"; do [ -f "$conf" ] && printf "%s" "$conf" && break; done)'
%endif


# Keybinding to open and source the tmux configuration file in a new window using the preferred editor.
bind e new-window -n "tmux.conf" -e EDITOR="$EDITOR" sh -c '
  # Check if nvim is available; use it if present, otherwise fall back to the current editor.
  if command -v nvim >/dev/null 2>&1; then
    EDITOR=nvim
  fi

  # Open the tmux config file with the determined editor, setting appropriate syntax highlighting.
  case "${EDITOR:-vim}" in
    *vim*) ${EDITOR:-vim} -c ":set syntax=tmux" "$TMUX_CONF";;
    *) $EDITOR ~/.config/tmux/tmux.conf;;
  esac && "$TMUX_PROGRAM" ${TMUX_SOCKET:+-S "$TMUX_SOCKET"} source "$TMUX_CONF" \; display "$TMUX_CONF sourced"
'

# Keybinding to open ~/.zshrc file in a new tmux window using the preferred editor.
bind | new-window -n "zshrc" -e EDITOR="$EDITOR" sh -c '
  # Check if nvim is available; use it if present, otherwise fall back to the current editor.
  if command -v nvim >/dev/null 2>&1; then
    EDITOR=nvim
  else
    EDITOR=${EDITOR:-vim}
  fi

  # Open the .zshrc file with the determined editor, setting appropriate syntax highlighting.
  case "$EDITOR" in
    *vim*) $EDITOR -c ":set syntax=zsh" "$HOME/.zshrc";;
    *) $EDITOR "$HOME/.zshrc";;
  esac && source "$HOME/.zshrc"; display "~/.zshrc sourced"
'

# Keybinding to reload the tmux configuration file.
bind r run '"$TMUX_PROGRAM" ${TMUX_SOCKET:+-S "$TMUX_SOCKET"} source "$TMUX_CONF"' \; display "#{TMUX_CONF} sourced"


# -- general -------------------------------------------------------------------

# Enable true color support in xterm-compatible terminals.
set-option -sa terminal-overrides ",xterm*:Tc"

# Enable focus events to detect when the terminal gains or loses focus.
set -s focus-events on

# Enable mouse support for selecting panes, resizing, and scrolling.
set -g mouse on

# Unset the default prefix key
unbind C-b

# Set an additional prefix key for tmux commands.
set -g prefix C-a

# Allow the use of the secondary prefix key (C-a) to send the original prefix key.
bind -n C-a send-prefix


# -- display -------------------------------------------------------------------

# Start window numbering from 1.
set -g base-index 1

# Ensure pane numbering is consistent with window numbering.
setw -g pane-base-index 1

# Automatically rename windows to reflect the currently active program.
set -g automatic-rename on

# Renumber windows after closing a window.
set -g renumber-windows on

# Set the terminal title to reflect the current tmux session and window.
set -g set-titles on

# Set the terminal title string to show pane title, session name, and window details.
set -g set-titles-string '#{pane_title} ❐ #{session_name} ❐ #{window_index}:#{window_name}'

# Set a slightly longer display time for pane indicators.
set -g display-panes-time 800

# Set a slightly longer display time for status messages.
set -g display-time 1000

# Ensure pane numbering starts from 1 in each window.
set-window-option -g pane-base-index 1

# Enable pane border status at the top
set -w  pane-border-status top # removed the -g flag cause it was being over written by theme

# Zen-full pane border format with minimal and useful information
set -g pane-border-format "#{pane_current_command}"

# set-hook -g after-new-window 'set allow-passthrough on'
# set -g visual-activity off


# -- navigation ----------------------------------------------------------------

# Bind C-c to create a new tmux session.
bind C-c new-session

# Bind C-f to prompt for finding a session and switching to it.
bind C-f command-prompt -p find-session 'switch-client -t %%'

# Bind BTab to switch to the last active session.
bind BTab switch-client -l

# Split the current window horizontally with a new pane.
bind - split-window -v

# Split the current window vertically with a new pane.
bind _ split-window -h

# Split the current window horizontally, maintaining the current pane's working directory.
bind - split-window -v -c "#{pane_current_path}"

# Split the current window vertically, maintaining the current pane's working directory.
bind _ split-window -h -c "#{pane_current_path}"

# Commenting below pane movement keys since we are already using
# christoomey/vim-tmux-navigator plugin which provides C-hjkl movements
# but without <prefix>before them
# Bind h, j, k, l for easy pane navigation in all directions.
#bind -r h select-pane -L  # move left
#bind -r j select-pane -D  # move down
#bind -r k select-pane -U  # move up
#bind -r l select-pane -R  # move right

# Bind > and < for swapping panes with the next or previous pane.
bind > swap-pane -D
bind < swap-pane -U

# Bind H, J, K, L for resizing panes in all directions.
bind -r H resize-pane -L 2
bind -r J resize-pane -D 2
bind -r K resize-pane -U 2
bind -r L resize-pane -R 2

# Unbind default navigation keys for previous and next window.
unbind n
unbind p

# Bind C-h and C-l for window navigation: previous and next window respectively.
bind -r C-h previous-window
bind -r C-l next-window

# Bind Tab to switch to the last active window.
bind Tab last-window

# -- copy mode -----------------------------------------------------------------

# Bind Enter to enter copy mode in tmux.
bind Enter copy-mode -e

# Use vi-style key bindings in copy mode.
setw -g mode-keys vi

# Bind v for starting selection, C-v for rectangle selection, and y for yanking in vi-mode.
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

# Bind Escape to cancel copy mode in vi-style.
bind -T copy-mode-vi Escape send -X cancel

# Bind H and L to move to the start and end of the line in vi-style copy mode.
bind -T copy-mode-vi H send -X start-of-line
bind -T copy-mode-vi L send -X end-of-line

# Copy mouse selected selection to system clipboard
bind -Tcopy-mode MouseDragEnd1Pane send -X copy-selection

# bind C to open a new pane to enter copy mode for the current panr
bind C {
	splitw -f -l30% ''
	set-hook -p pane-mode-changed 'if -F "#{!=:#{pane_mode},copy-mode}" "kill-pane"'
	copy-mode -s'{last}'
}
# -- buffers -------------------------------------------------------------------

# Bind b to list available paste buffers.
bind b list-buffers

# Bind p to paste the top buffer content.
bind p paste-buffer -p

# Bind P to choose which buffer to paste from.
bind P choose-buffer


# -- plugin settings -----------------------------------------------------------

# Set options for the Catppuccin tmux theme.
set -g @catppuccin_flavour 'mocha'

# Set options for the Tokyo Night tmux theme.
set -g @tokyo-night-tmux_show_datetime 0
set -g @tokyo-night-tmux_show_path 1
set -g @tokyo-night-tmux_path_format relative
set -g @tokyo-night-tmux_window_id_style dsquare
set -g @tokyo-night-tmux_pane_id_style hsquare
set -g @tokyo-night-tmux_show_git 1

# resurrect settings
set -g @resurrect-capture-pane-contents 'on'
set -g @resurrect-strategy-nvim 'session'

# List of plugins to load with tmux.
set -g @plugin 'tmux-plugins/tpm'
set -g @plugin 'tmux-plugins/tmux-sensible'
set -g @plugin 'christoomey/vim-tmux-navigator'
set -g @plugin 'dreamsofcode-io/tokyo-night-tmux'
# set -g @plugin 'catppuccin/tmux'
set -g @plugin 'tmux-plugins/tmux-resurrect'
set -g @plugin 'tmux-plugins/tmux-continuum'
# Initialize TPM (Tmux Plugin Manager) for managing plugins.
run -b '~/.tmux/plugins/tpm/tpm'

# Temporary settings
set -ga terminal-overrides '*:Ss=\E[%p1%d q:Se=\E[ q' # see :h tui-cursor-shape in nvim for this setting