# set prefix key to Ctrl-a
set -g prefix C-a

# enable mouse mode
set -g mouse on

# set default terminal to xterm-256color
set -g default-terminal "tmux-256color"

# bind keys for pane navigation
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

# bind key for closing panes
bind x kill-pane
bind q confirm-before kill-session
# bind key for switching between windows
bind n next-window
bind p previous-window

# cheatsheet & reload
bind ? display-popup -h 27 -w 46 -E "echo -e '╔══════════════════════════════════════════╗\n║             Tmux Cheatsheet             ║\n╠══════════════════════════════════════════╣\n║  Press Ctrl+A (prefix) then:             ║\n╠══════════════════════════════════════════╣\n║  PANES                                   ║\n║    h/j/k/l        Navigate pane          ║\n║    |              Split horizontally     ║\n║    -              Split vertically       ║\n║    x              Kill pane              ║\n║    Ctrl+S         Swap pane layout       ║\n╠══════════════════════════════════════════╣\n║  WINDOWS                                 ║\n║    n              Next window            ║\n║    p              Previous window        ║\n║    q              Kill session           ║\n║    c              New window             ║\n║    ,              Rename window          ║\n╠══════════════════════════════════════════╣\n║  GENERAL                                 ║\n║    r              Reload config          ║\n║    ?              This cheatsheet        ║\n╚══════════════════════════════════════════╝\nPress any key to close.' && read -n 1 -s"
bind r source-file ~/.config/tmux/tmux.conf

# disable terminal flow control (so C-s doesn't freeze)
# set -g flow-control off  # option not available in this tmux build

# bind key for toggling between horizontal and vertical split
bind C-s swap-pane -s .-1

# split panes using | and -
bind | split-window -h
bind - split-window -v
unbind '"'
unbind %

set -g @plugin 'tmux-plugins/tpm'
set -g @plugin 'tmux-plugins/tmux-online-status'
set -g @plugin 'tmux-plugins/tmux-battery'
set -g @plugin 'tmux-plugins/tmux-cpu'
# GitHub Dark color palette
set -g @thm_bg "#0d1117"
set -g @thm_surface_0 "#161b22"
set -g @thm_overlay_0 "#30363d"
set -g @thm_red "#f85149"
set -g @thm_green "#3fb950"
set -g @thm_yellow "#d29922"
set -g @thm_blue "#58a6ff"
set -g @thm_mauve "#bc8cff"
set -g @thm_pink "#f778ba"
set -g @thm_peach "#f0883e"
set -g @thm_maroon "#ff7b72"
set -g @thm_rosewater "#c9d1d9"

# Configure Online
set -g @online_icon "ok"
set -g @offline_icon "nok"

# status left look and feel
set -g status-left-length 100
set -g status-left ""
set -ga status-left "#{?client_prefix,#{#[bg=#{@thm_red},fg=#{@thm_bg},bold]  #S },#{#[bg=#{@thm_bg},fg=#{@thm_green}]  #S }}"
set -ga status-left "#[bg=#{@thm_bg},fg=#{@thm_overlay_0},none]│"
set -ga status-left "#[bg=#{@thm_bg},fg=#{@thm_maroon}]  #{pane_current_command} "
set -ga status-left "#[bg=#{@thm_bg},fg=#{@thm_overlay_0},none]│"
set -ga status-left "#[bg=#{@thm_bg},fg=#{@thm_blue}]  #{=/-32/...:#{s|$USER|~|:#{b:pane_current_path}}} "
set -ga status-left "#[bg=#{@thm_bg},fg=#{@thm_overlay_0},none]#{?window_zoomed_flag,│,}"
set -ga status-left "#[bg=#{@thm_bg},fg=#{@thm_yellow}]#{?window_zoomed_flag,  zoom ,}"

# status right look and feel
set -g status-right-length 100
set -g status-right ""
set -ga status-right "#{?#{e|>=:10,#{battery_percentage}},#{#[bg=#{@thm_red},fg=#{@thm_bg}]},#{#[bg=#{@thm_bg},fg=#{@thm_pink}]}} #{battery_icon} #{battery_percentage} "
set -ga status-right "#[bg=#{@thm_bg},fg=#{@thm_overlay_0}, none]│"
set -ga status-right "#[bg=#{@thm_bg}]#{?#{==:#{online_status},ok},#[fg=#{@thm_mauve}] 󰖩 on ,#[fg=#{@thm_red},bold]#[reverse] 󰖪 off }"
set -ga status-right "#[bg=#{@thm_bg},fg=#{@thm_overlay_0}, none]│"
set -ga status-right "#[bg=#{@thm_bg},fg=#{@thm_blue}] 󰭦 %a, %m-%d-%Y 󰅐 %I:%M %p "

# start indexing at 1 (not 0)
set -g base-index 1
setw -g pane-base-index 1

# misc quality-of-life
set -sg escape-time 0
set -g status-interval 5
set -g renumber-windows on
set -g focus-events on
setw -g aggressive-resize on
set -g set-clipboard on

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

# auto-install a Nerd Font if missing (for icons)
run 'if ! fc-list :lang=en 2>/dev/null | grep -qi "nerd\\|jetbrainsmono\\|firacode\\|hack\\|iosevka\\|meslo"; then
  mkdir -p ~/.local/share/fonts
  if command -v curl >/dev/null 2>&1; then
    curl -sL "https://github.com/ryanoasis/nerd-fonts/releases/download/v3.3.0/JetBrainsMono.zip" -o /tmp/jetbrains-nerd.zip
  elif command -v wget >/dev/null 2>&1; then
    wget -q "https://github.com/ryanoasis/nerd-fonts/releases/download/v3.3.0/JetBrainsMono.zip" -O /tmp/jetbrains-nerd.zip
  fi
  if [ -f /tmp/jetbrains-nerd.zip ]; then
    unzip -qo /tmp/jetbrains-nerd.zip -d ~/.local/share/fonts/ 2>/dev/null
    rm -f /tmp/jetbrains-nerd.zip
    fc-cache -f ~/.local/share/fonts/ 2>/dev/null
  fi
fi'

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

# Configure Tmux
set -g status-position bottom
set -g status-style "bg=#{@thm_bg}"
set -g status-justify "absolute-centre"

# pane border look and feel
setw -g pane-border-status bottom
setw -g pane-border-format ""
setw -g pane-active-border-style "bg=#{@thm_bg},fg=#{@thm_overlay_0}"
setw -g pane-border-style "bg=#{@thm_bg},fg=#{@thm_surface_0}"
setw -g pane-border-lines single

# window look and feel
set -wg automatic-rename on
set -g automatic-rename-format "#{pane_current_command}"

set -g window-status-format " #I#{?#{!=:#{window_name},Window},: #W,} "
set -g window-status-style "bg=#{@thm_bg},fg=#{@thm_rosewater}"
set -g window-status-last-style "bg=#{@thm_bg},fg=#{@thm_peach}"
set -g window-status-activity-style "bg=#{@thm_red},fg=#{@thm_bg}"
set -g window-status-bell-style "bg=#{@thm_red},fg=#{@thm_bg},bold"
set -gF window-status-separator "#[bg=#{@thm_bg},fg=#{@thm_overlay_0}]│"

set -g window-status-current-format " #I#{?#{!=:#{window_name},Window},: #W,} "
set -g window-status-current-style "bg=#{@thm_peach},fg=#{@thm_bg},bold"