.tmux.conf

# required when launching tmux directly outside a shell session
# https://github.com/tmux/tmux/issues/2541
set-environment -g PATH "/opt/homebrew/bin:/opt/homebrew/sbin:/usr/bin:/bin:/usr/sbin:/sbin"

# https://github.com/orgs/tmux-plugins/repositories?type=all
set -g @plugin 'tmux-plugins/tpm'
# handles `reattach-to-user-namespace`
set -g @plugin 'tmux-plugins/tmux-sensible'
# prefix-F to view keybindings and commands in fzf
set -g @plugin 'sainnhe/tmux-fzf'
# o to open selection in macos
set -g @plugin 'tmux-plugins/tmux-open'
# prefix-u urlview
set -g @plugin 'wfxr/tmux-fzf-url'
# TODO need status bar for this to be useful
# set -g @plugin 'tmux-plugins/tmux-prefix-highlight'
# prefix-y to copy, prefix-shift-y to copy and paste
set -g @plugin 'tmux-plugins/tmux-yank'
# TODO https://github.com/jabirali/tmux-tilish
# TODO is this one better? https://github.com/noscript/tmux-mighty-scroll
set -g @plugin 'nhdaly/tmux-better-mouse-mode'
# prefix-f
set -g @plugin 'abhinav/tmux-fastcopy'
# prefix-tab to extract text from pane
# TODO custom extraction patterns https://github.com/laktak/extrakto#custom-filters
set -g @plugin 'laktak/extrakto'
set -g @plugin 'akohlbecker/aw-watcher-tmux'
# TODO https://github.com/tmux-plugins/tmux-fpp/blob/master/fpp.tmux

# remap prefix to C-h. Some people use C-a, but that conflicts with beginning of line for me. C-b is just annoying.
unbind C-b
set-option -g prefix C-h
bind-key C-h send-prefix

# Enter copy mode with prefix-k, much easier
unbind [
bind-key k copy-mode

# enter copy mode without a prefix!
bind -n C-M-k copy-mode

# push fastcopy into macos clipboard
set-option -g @fastcopy-action pbcopy

# easy reload: prefix+r
# https://til.hashrocket.com/posts/d4d3c1fea6-quickly-edit-and-reload-tmux-configuration
bind-key r source-file ~/.tmux.conf \; display-message "~/.tmux.conf reloaded"

# https://unix.stackexchange.com/questions/665657/tmux-copy-and-paste-not-working
setw -g mode-keys vi
bind-key -T copy-mode-vi C-a send-keys -X start-of-line
bind-key -T copy-mode-vi C-e send-keys -X end-of-line

# prefix-C to clear the terminal
# https://stackoverflow.com/questions/10543684/how-do-i-clear-the-scrollback-buffer-in-tmux#:~:text=Just%20type%20%2B%20%3A,question%20for%20the%20same%20effect.
# NOTE this is normally bound to create a new window, but we don't do that via tmux
bind-key c {
  send-keys -R
  clear-history
  # this runs `push-line` in zsh
  # TODO we should really try executing the widget directly as this is brittle
  send-keys C-x C-p
  send-keys "Enter"
}

# TODO may fix issues with nano https://github.com/mislav/dotfiles/blob/master/tmux.conf#L39C8-L39C19

set -g mouse on

# I'm very nitpicky about the mouse configuration and I've manually configured it below
set -g @yank_with_mouse off

# I don't like the status bar taking up screen real estate
set -g status off


# pass VS Code variables from the shell to tmux
set update-environment "VSCODE_GIT_ASKPASS_EXTRA_ARGS VSCODE_GIT_ASKPASS_MAIN VSCODE_GIT_IPC_HANDLE VSCODE_INJECTION"

# blue is harder to read for me when searching, switch to yellow
set -g copy-mode-match-style bg=yellow,fg=black

# makes scrolling seem more macos-like
set -g @scroll-speed-num-lines-per-scroll 3
# allows less and other pagers to use the scroll wheel!
set -g @emulate-scroll-for-no-mouse-alternate-buffer on

# expand tmux-fzf plugin to full screen
TMUX_FZF_OPTIONS="-p -w 100% -h 100% -m"
TMUX_FZF_ORDER="command|keybinding|copy-mode|session|window|pane|clipboard|process"

# make colors inside tmux look the same as outside of tmux
# https://unix.stackexchange.com/questions/348771/why-do-vim-colors-look-different-inside-and-outside-of-tmux
set -g default-terminal "xterm-256color"
set-option -ga terminal-overrides ",xterm-256color:Tc"

# Enable CSI u, this makes iterm play better with tmux
# https://github.com/tmux/tmux/wiki/Modifier-Keys#extended-keys
set -s extended-keys on
set -as terminal-features 'xterm*:extkeys'

# TODO https://github.com/abhinav/tmux-fastcopy/issues/155 jump to selection instead of copying
# modify file regex to include line and column numbers
set-option -g @fastcopy-regex-path "(?:[\\w\\-\\.]+|~)?(?:/[\\w\\-\\.@]+){2,}(?:\\:\\d+)?(?:\\:\\d+)?\\b"
set-option -g @fastcopy-regex-stacktrace-path "(?:[\\w\\-\\.@/]+){2,}(?:\\:\\d+)(?:\\:\\d+)?\\b"

# same regex as `regex-path`, but without escape chars
# TODO this matches against https:// too.. `rg --no-filename --no-column --no-line-number --color=never -oP '(?!://)(\~/|./|/)([a-zA-Z0-9_\-\.@/-]+/){2,}[a-zA-Z0-9_\-\.@]+'`
# set -g @fzf-url-extra-filter 'grep -oE "(\~/|./|/)([a-zA-Z0-9_\-\.@/-]+/){2,}[a-zA-Z0-9_\-\.@]+"'
set -g @fzf-url-extra-filter '/opt/homebrew/bin/rg --no-filename --no-column --no-line-number --color=never -oP "(?!\:\/\/)(~/|./|/)([a-zA-Z0-9_./@-]+/){2,}[a-zA-Z0-9_./@-]+"'

# open file in editor on shift-{letter}
# default action is copy to clipboard
set-option -g @fastcopy-shift-action '/Users/mike/.open-file-path.sh {}'
set-option -g @open-editor '/Users/mike/.open-file-path.sh'

# TODO custom extraction patterns https://github.com/laktak/extrakto#custom-filters
set -g @extrakto_editor "~/.open-file-path.sh"
set -g @extrakto_filter_order "all line"
set -g @extrakto_grab_area "recent"

###########################
# use pbpcopy for copy bindings
# trim training newlines from end-of-line copy
###########################

# append selection to clipboard
bind-key -T copy-mode-vi A send-keys -X append-selection-and-cancel pbcopy

# copy to EOL and trim trailing newline, but not leading/trailing whitespace
bind-key -T copy-mode-vi D send-keys -X copy-pipe-end-of-line-and-cancel "tr -d '\\n' | pbcopy"

# copy selection to clipboard without canceling anything
bind-key -T copy-mode-vi Y send-keys -X copy-selection-no-clear

# copy to EOL and trim trailing newline and trailing/leading whitespace
bind-key -T copy-mode-vi C-D {
  send -X copy-pipe-end-of-line-and-cancel "tr -d '\\n' | sed 's/^[[:space:]]*//;s/[[:space:]]*$//' | pbcopy"
}

# rebind Enter to copy line; use y to copy selection
bind-key -T copy-mode-vi Enter {
  send -X clear-selection

  # get to the start of the physical line
  send -X start-of-line
  send -X start-of-line

  send -X begin-selection

  # end of physical line
  send -X end-of-line
  send -X end-of-line

  # trim trailing newline from selection
  send -X copy-pipe-and-cancel "tr -d '\\n' | pbcopy"
}

###########################
# Copy Mode navigation
# helpful shortcuts for jumping to content in the buffer very quickly
###########################

# easily jump to prompt starts
# https://unix.stackexchange.com/questions/226731/jump-to-last-prompt-in-terminal-or-tmux
bind-key -T copy-mode-vi b {
  send-keys -X start-of-line
  send-keys -X search-backward "❯"
}

# easily jump to jest errors, j for jest
bind-key -T copy-mode-vi j {
  send-keys -X start-of-line
  send-keys -X search-backward " ● "
}

# https://ianthehenry.com/posts/tmux-copy-last-command/
# select the output of the last command, use multiple times
bind -n S-M-Up {
  # This just “resets” our state so that we’re ready to copy and so that we have no selection active. Pretty simple.
  copy-mode
  send -X clear-selection

  # This puts our cursor at the start of the current physical line
  send -X start-of-line
  send -X start-of-line

  # And this puts our cursor at the beginning of the physical line just above us
  send -X cursor-up
  send -X start-of-line
  send -X start-of-line

  # checks “is our cursor now on a line that contains a prompt” after moving
  # the previous cursor up a line. This occurs on the second trigger of this command
  if -F "#{m:*❯\u00A0*,#{copy_cursor_line}}" {
    send -X cursor-up
  }

  # skips the git status line
  send -X cursor-up

  # begin selection at the end of the last prompt input
  send -X end-of-line
  send -X end-of-line
  send -X begin-selection

  # jump to the next line after the previous prompt
  send -X search-backward-text "❯\u00A0"
  send -X end-of-line
  send -X end-of-line
  send -X cursor-right

  # do not `stop-selection` here to retain selection to allow for adjustmnet
}

# copy word, trim whitespace
bind-key -T copy-mode-vi C-w {
  send -X begin-selection

  # Continue the current selection to the end of the word
  # https://github.com/tmux/tmux/blob/b77778072052c14d1450d2eb89542f2493121f84/window-copy.c#L5326
  send -X next-word-end

  # trim leading + trailing whitespace
  send -X copy-pipe-and-cancel "sed 's/^[[:space:]]*//;s/[[:space:]]*$//' | pbcopy"
}

# TODO add copy entire line shortcut, regardless of current cursor

###########################
# Fast Searching
# similar to copycat, but using the native search so it's fast (https://github.com/tmux-plugins/tmux-copycat/tree/master)
###########################

# `/` for quick, interactive searches
bind-key / command-prompt -i -I "#{pane_search_string}" -T search -p "search" {
  copy-mode -e
  send-keys -X search-backward-incremental "%%"
}

# TODO file search https://github.com/tmux-plugins/tmux-copycat/issues/148
# bind-key f {
#   send-keys -X search-backward '[a-zA-Z0-9_./-@]+$'
# }

# TODO add url, file, git sha, etc searches; pull from copycat

###########################
# iTerm rebindings
# In iterm when CSI U mode (extended key mode) is enabled tmux sees M-Left & M-Right arrow keys directly, unlike xterm.js
# or alacritty where \ef & \eb are reported by opt+{right,left} arrow keys. The raw codes in CSI U mode are "\e[1;3C" "\e[1;3D"
# This fixes M-{Arrow} word navigation for me. Weirdly enough, iTerm only does this in a tmux session: not in zsh, bash, etc (although these are not consistent either).
# In copy mode, we want to send specific commands, but in normal mode we want to pass the correct key bindings down to zsh.
###########################

bind -n M-Right send-keys "\ef"
bind -n M-Left send-keys "\eb"

bind -T copy-mode-vi M-Right send-keys -X next-word
bind -T copy-mode-vi M-Left send-keys -X previous-word

###########################
# less-style page up/down
###########################

# this is how `less` does it, and it feels nice
bind-key -T copy-mode-vi u send-keys -X page-up
bind-key -T copy-mode-vi d send-keys -X page-down

# 3x scrolling with shift
bind-key -T copy-mode-vi U send-keys -X halfpage-up \; send-keys -X halfpage-up\; send-keys -X halfpage-up
bind-key -T copy-mode-vi D send-keys -X halfpage-down \; send-keys -X halfpage-down\; send-keys -X halfpage-down

###########################
# option-{Arrow} word navigation
###########################

bind-key -T copy-mode-vi M-f send-keys -X next-word
bind-key -T copy-mode-vi M-b send-keys -X previous-word

###########################
# Keyboard Based Copy Mode Navigation
# allow Shift-{Arrows} to be used to start selection AND mutate selection, like macos
###########################

bind-key -n S-Right {
  select-pane
  copy-mode

  if-shell -F '#{selection_present}' {
    send-keys -X cursor-right
  } {
    send-keys -X begin-selection
    send-keys -X cursor-right
  }
}

bind-key -n S-Left {
  select-pane
  copy-mode

  if-shell -F '#{selection_present}' {
    send-keys -X cursor-left
  } {
    send-keys -X begin-selection
    send-keys -X cursor-left
  }
}
bind-key -n S-M-Right {
  select-pane
  copy-mode

  if-shell -F '#{selection_present}' {
    send-keys -X next-word
  } {
    send-keys -X begin-selection
    send-keys -X next-word
  }
}

bind-key -n S-M-Left {
  select-pane
  copy-mode

  if-shell -F '#{selection_present}' {
    send-keys -X previous-word
  } {
    send-keys -X begin-selection
    send-keys -X previous-word
  }
}

bind-key -T copy-mode-vi 'S-Down' {
  if-shell -F '#{selection_present}' {
    send-keys -X cursor-down
  } {
    send-keys -X begin-selection
    send-keys -X cursor-down
  }
}

bind-key -T copy-mode-vi 'S-Up' {
  if-shell -F '#{selection_present}' {
    send-keys -X cursor-up
  } {
    send-keys -X begin-selection
    send-keys -X cursor-up
  }
}

bind-key -T copy-mode-vi 'S-Right' {
  if-shell -F '#{selection_present}' {
    send-keys -X cursor-right
  } {
    send-keys -X begin-selection
    send-keys -X cursor-right
  }
}

bind-key -T copy-mode-vi 'S-Left' {
  if-shell -F '#{selection_present}' {
    send-keys -X cursor-left
  } {
    send-keys -X begin-selection
    send-keys -X cursor-left
  }
}

bind-key -T copy-mode-vi S-M-Left {
  if-shell -F '#{selection_present}' {
    send-keys -X previous-word
  } {
    send-keys -X begin-selection
    send-keys -X previous-word
  }
}

bind-key -T copy-mode-vi S-M-Right  {
  if-shell -F '#{selection_present}' {
    send-keys -X next-word
  } {
    send-keys -X begin-selection
    send-keys -X next-word
  }
}

# this patch fix errors
if "test ! -d ~/.tmux/plugins/tpm" \
   "run 'git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm && ~/.tmux/plugins/tpm/bin/install_plugins'"

run '~/.tmux/plugins/tpm/tpm'

# TODO never got this working, some bug in the macos integration
# set-option -g @plugin 'b0o/tmux-autoreload'

###########################
# macos-style mouse selection
# must run after tpm
###########################

# don't cancel selection when double click ends
# works in copy mode too
bind-key -n DoubleClick1Pane {
  select-pane
  copy-mode -M
  send-keys -X select-word
}

# once we are in copy mode, single click to start new selection
bind -T copy-mode-vi MouseDown1Pane {
  select-pane
  send-keys -X clear-selection
}

# triple click to copy entire line
bind-key -n TripleClick1Pane {
  select-pane
  copy-mode -M
  send-keys -X select-line
  send-keys -X copy-pipe-end-of-line-and-cancel "tr -d '\\n' | pbcopy"

  # without the sleep, the message dissapears
  run-shell "sleep 0.1"
  display-message "Copied line to clipboard"
}

# TODO create another binding which copies the last output, trims trailing newlines, and copies to clipboard

# TODO should replace the existing yank script
# copy line in prompt
bind p {
  # go to beginning of line, this respects whatever prompt header (zsh, py, etc) is present
  send-key 'C-a'
  run-shell "sleep 0.01"

  select-pane
  copy-mode
  send-keys -X begin-selection
  send-keys -X end-of-line
  # TODO do we need to do end-of-line twice?
  send-keys -X copy-pipe-and-cancel "tr -d '\\n' | pbcopy"

  # now jump to the end of the line since we are out of copy mode
  send-key 'C-e'

  # without the sleep, the message disappears
  run-shell "sleep 0.1"
  display-message "Copied prompt line to clipboard"
}

# do not cancel selection when dragging ends
# TODO document exactly what is binding these actions
unbind -T copy-mode-vi MouseDragEnd1Pane
unbind -T copy-mode MouseDragEnd1Pane
unbind -T copy-mode-vi DoubleClick1Pane
unbind -T copy-mode DoubleClick1Pane
unbind -T copy-mode-vi TripleClick1Pane
unbind -T copy-mode TripleClick1Pane
# TODO unbind rightclick

# this is at the bottom because it messes with syntax highlighting in vs code
# align word separators with a more standard terminal
# https://github.com/tmux/tmux/issues/3528
set-option -g word-separators " ()[]{}',:;\""