dot_tmux.conf

# WARNING: Do not bind C-M!! The terminal sees this as <return> being pressed.
# If you set it on accident, you will need to manually unset it :unset -m C-M,
# or start a new session.

#--------------------------------------------
#      ~ Options ~
#--------------------------------------------
set -g history-limit 50000
# Increase tmux message display duration.
set -g display-time 3000
# Style messages to be more visible (centered, bright colors)
set -g message-style "bg=green,fg=black,bold,align=centre"
set -g message-command-style "bg=yellow,fg=black,bold,align=centre"
# Refresh 'status-left' and 'status-right' more often, from every 15s to 5s
set -g status-interval 5
# Needed for neovim
# Suggested by lazyvim's :checkhealth
set -sg escape-time 10
set -g focus-events on
# True color settings
set -s default-terminal 'tmux-256color'
set -sa terminal-features ',tmux-256color:RGB'
set -as terminal-overrides ',alacritty*:Tc'
# required for pi ai
set -g extended-keys on
set -g extended-keys-format csi-u

set -g mode-keys vi
# End Neovim Specific
# Super useful when using "grouped sessions" and multi-monitor setup
setw -g aggressive-resize on
# Enable mouse mode (tmux 2.1 and above)
set -g mouse on
# Position of status bar
set -g status-position top
set -g status-right ''
set -g status-left '#{tmux_mode_indicator}  '
# Used for sesh.
set -g detach-on-destroy off  # don't exit from tmux when closing a session

#--------------------------------------------
#      ~ Keybinds ~
#--------------------------------------------

# Reload Config
bind-key r source-file ~/.local/share/chezmoi/dot_tmux.conf \; display-message -d 2000 "~/.tmux.conf reloaded"

# Searchable keybinding reference (replaces built-in list-keys)
bind-key ? display-popup -E -w 90% -h 90% "$HOME/code/scripts/tmux/tmux-keys-fzf"

# Restart current pane
bind-key R respawn-pane -k
bind-key M split-window -h "vim ~/.tmux.conf"

# Vim Copy Settings
bind -T copy-mode-vi v send -X begin-selection
bind -T copy-mode-vi y send-keys -X copy-pipe-and-cancel "pbcopy" \; set -p window-active-style ''
bind -T copy-mode-vi Enter send-keys -X copy-pipe-and-cancel "pbcopy" \; set -p window-active-style ''
bind -T copy-mode-vi Escape send -X cancel \; set -p window-active-style ''
bind -T copy-mode-vi q send -X cancel \; set -p window-active-style ''
bind P paste-buffer
bind -T copy-mode-vi MouseDragEnd1Pane send-keys -X copy-pipe-and-cancel "pbcopy" \; set -p window-active-style ''

# Selection highlight color
set -g mode-style 'bg=#32302f,fg=#ebdbb2,bold'

# Homerow arrow keys in copy mode (colemak-style mnei = left/down/up/right)
bind -T copy-mode-vi m send -X cursor-left
bind -T copy-mode-vi n send -X cursor-down
bind -T copy-mode-vi e send -X cursor-up
bind -T copy-mode-vi i send -X cursor-right

# Quick scroll up - enter copy mode and scroll up with Alt-u (handled below with color)

# Enter copy mode with Alt-v (no leader needed), highlight background
bind-key -n M-v copy-mode \; set -p window-active-style '#{@theme_copy_mode_bg}'
bind-key -n M-u copy-mode -u \; set -p window-active-style '#{@theme_copy_mode_bg}'

# In copy mode, Alt-u/Alt-d to continue scrolling (keep holding Alt)
bind-key -T copy-mode-vi M-u send-keys -X halfpage-up
bind-key -T copy-mode-vi M-d send-keys -X halfpage-down

# Leader Key
set -g prefix C-t
bind-key C-t send-prefix
# set -g prefix C-Space
# bind-key C-Space send-prefix

# RESIZE PANELS
#
# By 5 Pixels
bind-key -r -T prefix       C-Up              resize-pane -U 5
bind-key -r -T prefix       C-Down            resize-pane -D 5
bind-key -r -T prefix       C-Left            resize-pane -L 5
bind-key -r -T prefix       C-Right           resize-pane -R 5

# By 1 Pixels
bind-key -r -T prefix       M-m               resize-pane -L
bind-key -r -T prefix       M-n               resize-pane -D
bind-key -r -T prefix       M-e               resize-pane -U
bind-key -r -T prefix       M-i               resize-pane -R

# Panes

# alt mnei to select panes without leader
bind-key -n M-m select-pane -L
bind-key -n M-n select-pane -D
bind-key -n M-e select-pane -U
bind-key -n M-i select-pane -R

# Select Pane using Leader.
bind m select-pane -L
bind n select-pane -D
bind e select-pane -U
bind i select-pane -R

# Create Pane panes using / and -
unbind '"'
unbind %
# Vertical
bind / split-window -h -c "#{pane_current_path}"
# Horizontal
bind - split-window -v -c "#{pane_current_path}"

# Layout Cycling - prefix Space cycles layouts (use prefix first to avoid accidental triggers)
# Removed C-Space root binding - too easy to trigger accidentally

# Windows
# ------------------------------------------------------

# Create
bind c new-window -c "#{pane_current_path}"
# Next
bind-key -n M-I next-window
# Previous
bind-key -n M-M previous-window

# # Move Window Left
# bind-key -n M-M swap-window -t -1
# # Move Window Right
# bind-key -n M-I swap-window -t +1
#
# Misc
# ------------------------------------------------------
# Not sure how this got set in the first place.
unbind -n Tab

# ------------------------------------------------------
# Session Management
# ------------------------------------------------------

# Switch to last active session - Alt-s (no leader needed) or C-t s (with leader)
bind-key -n M-s run-shell "sesh last"
bind-key s run-shell "sesh last"

# Quick session cycling - Alt-Tab style (instant switching)
bind-key -n M-Tab run-shell "$HOME/code/scripts/tmux/session-quick-switch 1"
bind-key -n M-BTab run-shell "$HOME/code/scripts/tmux/session-quick-switch 2"

# Alternative: Visual session switcher with fzf popup
# Uncomment this and comment out the lines above if you prefer to see a list
# bind-key -n M-Tab display-popup -E -w 60% -h 50% "$HOME/code/scripts/tmux/session-visual-switcher /tmp/tmux-session-switch-#{session_id}"

# Sesh session selector - Alt-t (no leader needed) or C-t t (with leader)
bind-key -n M-t run-shell -b "sesh connect \"$(
  sesh list --icons | fzf-tmux -p 80%,70% \
    --no-sort --ansi --border-label ' sesh ' --prompt '> ' \
    --header '  ^a all ^t tmux ^g configs ^x zoxide ^d tmux kill ^f find ^w worktrees' \
    --bind 'tab:down,btab:up' \
    --bind 'ctrl-a:change-prompt(> )+reload(sesh list --icons)' \
    --bind 'ctrl-t:change-prompt(tmux> )+reload(sesh list -t --icons)' \
    --bind 'ctrl-g:change-prompt(config> )+reload(sesh list -c --icons)' \
    --bind 'ctrl-x:change-prompt(zoxide> )+reload(sesh list -z --icons)' \
    --bind 'ctrl-f:change-prompt(find> )+reload(fd -H -d 2 -t d -E .Trash . ~)' \
    --bind 'ctrl-w:change-prompt(worktree> )+reload(fd -t d -d 2 . ~/code/worktrees 2>/dev/null)' \
    --bind 'ctrl-d:execute(tmux kill-session -t {2..})+change-prompt(> )+reload(sesh list --icons)' \
    --preview-window 'right:55%' \
    --preview 'sesh preview {}'
)\""
bind-key t run-shell -b "sesh connect \"$(
  sesh list --icons | fzf-tmux -p 80%,70% \
    --no-sort --ansi --border-label ' sesh ' --prompt '> ' \
    --header '  ^a all ^t tmux ^g configs ^x zoxide ^d tmux kill ^f find ^w worktrees' \
    --bind 'tab:down,btab:up' \
    --bind 'ctrl-a:change-prompt(> )+reload(sesh list --icons)' \
    --bind 'ctrl-t:change-prompt(tmux> )+reload(sesh list -t --icons)' \
    --bind 'ctrl-g:change-prompt(config> )+reload(sesh list -c --icons)' \
    --bind 'ctrl-x:change-prompt(zoxide> )+reload(sesh list -z --icons)' \
    --bind 'ctrl-f:change-prompt(find> )+reload(fd -H -d 2 -t d -E .Trash . ~)' \
    --bind 'ctrl-w:change-prompt(worktree> )+reload(fd -t d -d 2 . ~/code/worktrees 2>/dev/null)' \
    --bind 'ctrl-d:execute(tmux kill-session -t {2..})+change-prompt(> )+reload(sesh list --icons)' \
    --preview-window 'right:55%' \
    --preview 'sesh preview {}'
)\""

# Worktree branch selector - Alt-w (no leader needed) or C-t w (with leader)
# Select repo > select branch > create worktree if needed > start session
bind-key -n M-w display-popup -E -w 80% -h 70% "$HOME/code/scripts/tmux/worktree-branch-selector"
bind-key w display-popup -E -w 80% -h 70% "$HOME/code/scripts/tmux/worktree-branch-selector"

# example of starting a session using output of ls to select from.
# bind-key 'f' run-shell -b "sesh connect \"$(ls | fzf-tmux --ansi --bind 'tab:down,btab:up')\""

# Layout picker - select and apply tmuxinator layouts
bind-key "L" display-popup -E -w 80% -h 80% "$HOME/code/scripts/tmux/layout-picker"

# Theme picker - switch alacritty + tmux themes in real time
bind-key "T" display-popup -E -w 55% -h 70% "$HOME/code/scripts/terminal-theme-picker"

# Command history browser
# M-h: tv version   M-y: fzf version (compare and pick your favourite)
# M-H: tmux scrollback fallback (for subshell sessions)
bind-key -n M-h display-popup -E -w 85% -h 80% "$HOME/code/scripts/shell/cmd-history-browse"
bind-key -n M-y display-popup -E -w 85% -h 80% "$HOME/code/scripts/shell/cmd-history-fzf"
bind-key -n M-H display-popup -E -w 85% -h 80% "tv tmux-scrollback"

# Claude pane message picker - copy any message/response from the focused pane
bind-key -n M-c run-shell "tmux display-popup -E -w 85% -h 80% '$HOME/code/scripts/shell/claude-pane-copy #{pane_id}'"

# PR Selector popup - Alt-g for GitHub PRs (toggles on/off)
bind-key -n M-g run-shell "$HOME/code/scripts/github/pr-popup-toggle"

# Start PR cache refresher in background when new sessions are created
# The script has PID file protection to prevent multiple instances
# Settings are read from ~/.config/gh-pr-select/config.yml
set-hook -g after-new-session "run-shell -b '$HOME/code/scripts/github/pr-cache-refresh'"

# Refresh system state cache on new session
set-hook -g after-new-session "run-shell -b '$HOME/code/scripts-private/bin/system-state-check --json --no-fetch > /dev/null 2>&1 || true'"

# Theme colors - loaded from machine-local file (not tracked in git)
source-file -q ~/.config/tmux/themes/current-theme.conf

# Plugins
# ------------------------------------------------------
# Instructions for Tmux Plugin Manager (TPM)
# https://github.com/tmux-plugins/tpm?tab=readme-ov-file#installing-plugins
set -g @plugin 'tmux-plugins/tpm'
set -g @plugin 'alexwforsythe/tmux-which-key'
# Load which-key init directly (plugin.sh.tmux uses GNU readlink which fails on macOS)
if-shell 'test -f ~/.tmux/plugins/tmux-which-key/plugin/init.tmux' \
  'source-file ~/.tmux/plugins/tmux-which-key/plugin/init.tmux'

# Mode indicator styling
set -g @plugin 'MunifTanjim/tmux-mode-indicator'
set -g @mode_indicator_prefix_prompt ' WAIT '
set -g @mode_indicator_copy_prompt ' COPY '
set -g @mode_indicator_empty_prompt ' TMUX '
set -g @mode_indicator_prefix_mode_style 'bg=colour208,fg=colour237,bold'
set -g @mode_indicator_copy_mode_style 'bg=colour142,fg=colour237,bold'
set -g @mode_indicator_empty_mode_style 'bg=colour245,fg=colour237,bold'


#  Leader + Space to show the menu.
# set -g @plugin 'z3z1ma/tmux-gruvbox'

# Session persistence
set -g @plugin 'tmux-plugins/tmux-resurrect'
set -g @plugin 'tmux-plugins/tmux-continuum'
set -g @continuum-restore 'on'  # Auto-restore on tmux start

# Restore programs on session restore
# Note: Claude Code will restart but conversation state won't be restored (use /resume in Claude)
set -g @resurrect-processes 'vi vim nvim emacs man less more tail top htop irssi weechat mutt ~claude'

# Initialize TMUX plugin manager (keep this line at the very bottom of tmux.conf)
run '~/.tmux/plugins/tpm/tpm'


# Pane border format - placed after plugins
set -g pane-border-status top
set -g pane-border-format " #{pane_index}: #{s|$HOME|~|:pane_current_path} "
set -g pane-border-lines heavy

# Override status bar to show session name in center
# set -g status-centre 'hello'

# Resources
# ------------------------------------------------------
# https://www.hamvocke.com/blog/a-guide-to-customizing-your-tmux-conf/

# Notes
# ------------------------------------------------------
# -r allows the keybind to repeat without having to hit the leader
# key again.
# The C- portion of this keybind allows you to continue holding down
# control and hit multiple <spc>+a/t to cycle through windows as opposed
# to repaeting a/t which can som  etimes be faster.
# bind -r C-t next-window
# bind -r C-a previous-window
#
# vim:syntax=tmux