dot_tmux.conf

# ══════════════════════════════════════════════════════════════════════════════
# TMUX CONFIGURATION
# ══════════════════════════════════════════════════════════════════════════════

# ──────────────────────────────────────────────────────────────────────────────
# Core Settings
# ──────────────────────────────────────────────────────────────────────────────

# True color support
set -g default-terminal "tmux-256color"
set -as terminal-features ",*:RGB"

# Extended key support (more key combinations)
set -s extended-keys on

# Faster command sequences (no delay for escape key)
set -s escape-time 0

# Larger scrollback buffer
set -g history-limit 50000

# Start window/pane numbering at 1
set -g base-index 1
setw -g pane-base-index 1

# Renumber windows when one is closed
set -g renumber-windows on

# Enable focus events (for vim/neovim)
set -g focus-events on

# Aggressive resize (useful when multiple clients)
setw -g aggressive-resize on

# ──────────────────────────────────────────────────────────────────────────────
# Key Bindings
# ──────────────────────────────────────────────────────────────────────────────

# Change prefix from C-b to C-a (easier to reach)
set -g prefix C-a
unbind C-b
bind C-a send-prefix

# Vi mode for copy/paste
set -g mode-keys vi
set -g status-keys vi

# Reload config with prefix + r
bind r source-file ~/.tmux.conf \; display "Config reloaded!"

# Split panes with | and - (more intuitive)
bind | split-window -h -c "#{pane_current_path}"
bind - split-window -v -c "#{pane_current_path}"

# Override default split bindings to open in same directory
bind '"' split-window -c "#{pane_current_path}"
bind % split-window -hc "#{pane_current_path}"

# New window in same directory
bind c new-window -c "#{pane_current_path}"

# Arrow key navigation for panes (no prefix needed)
bind -n M-Left select-pane -L
bind -n M-Right select-pane -R
bind -n M-Up select-pane -U
bind -n M-Down select-pane -D

# Shift + Arrow to switch windows
bind -n S-Left previous-window
bind -n S-Right next-window

# Ctrl + Shift + Arrow to reorder windows
bind -n C-S-Left swap-window -t -1\; select-window -t -1
bind -n C-S-Right swap-window -t +1\; select-window -t +1

# Resize panes with prefix + Arrow (repeatable)
bind -r Left resize-pane -L 5
bind -r Down resize-pane -D 5
bind -r Up resize-pane -U 5
bind -r Right resize-pane -R 5

# Quick pane cycling with prefix + Tab
bind Tab last-pane

# Vi-style copy mode bindings
bind -T copy-mode-vi v send -X begin-selection
bind -T copy-mode-vi y send -X copy-selection-and-cancel
bind -T copy-mode-vi C-v send -X rectangle-toggle

# Easier copy mode entry
bind Escape copy-mode

# ──────────────────────────────────────────────────────────────────────────────
# Mouse Support
# ──────────────────────────────────────────────────────────────────────────────

set -g mouse on

# Don't clear selection on mouse release
bind -T copy-mode-vi MouseDragEnd1Pane send -X copy-selection-no-clear

# ──────────────────────────────────────────────────────────────────────────────
# Visual Styling
# ──────────────────────────────────────────────────────────────────────────────

# Status bar position
set -g status-position top

# Status bar colors and style
set -g status-style 'bg=#1e1e2e,fg=#cdd6f4'

# Status bar left side
set -g status-left-length 40
set -g status-left '#{?client_prefix,#[bg=#f38ba8 fg=#1e1e2e bold],#[bg=#89b4fa fg=#1e1e2e bold]} #{session_name} #[bg=#1e1e2e] '

# Status bar right side
set -g status-right-length 80
set -g status-right '#[fg=#89dceb]#{continuum_status}#[fg=#cdd6f4] | #[fg=#a6e3a1]%H:%M #[fg=#f9e2af]%d-%b-%y '

# Window status format
set -g window-status-format ' #I:#W '
set -g window-status-current-format '#[fg=#f5c2e7 bold] #I:#W '

# Window status separator
set -g window-status-separator ''

# Active window highlighting
set -g window-status-current-style 'fg=#cba6f7,bold'

# Window with activity alert
setw -g monitor-activity on
set -g visual-activity off
set -g window-status-activity-style 'fg=#fab387,bold'

# Pane borders
set -g pane-border-status top
set -g pane-border-format ' #{pane_title} '
set -g pane-border-style 'fg=#313244'
set -g pane-active-border-style 'fg=#cba6f7,bold'

# Message styling
set -g message-style 'bg=#89b4fa,fg=#1e1e2e,bold'
set -g message-command-style 'bg=#f9e2af,fg=#1e1e2e'

# Clock mode colors
setw -g clock-mode-colour '#89b4fa'

# ──────────────────────────────────────────────────────────────────────────────
# Plugins (using TPM - Tmux Plugin Manager)
# ──────────────────────────────────────────────────────────────────────────────

# List of plugins
set -g @plugin 'tmux-plugins/tpm'
set -g @plugin 'tmux-plugins/tmux-sensible'
set -g @plugin 'tmux-plugins/tmux-yank'
set -g @plugin 'tmux-plugins/tmux-resurrect'
set -g @plugin 'tmux-plugins/tmux-continuum'

# ──────────────────────────────────────────────────────────────────────────────
# Plugin Configuration
# ──────────────────────────────────────────────────────────────────────────────

# tmux-resurrect settings
set -g @resurrect-strategy-vim 'session'
set -g @resurrect-strategy-nvim 'session'
set -g @resurrect-capture-pane-contents 'on'
set -g @resurrect-processes 'ssh psql mysql sqlite3 "~yarn dev" "~npm start" "~rails server"'

# tmux-continuum settings
set -g @continuum-restore 'on'
set -g @continuum-save-interval '15'

# Continuum status styling
set -g @continuum-status-on-wrap-style '#[fg=#a6e3a1 bold]#{value}m#[default]'
set -g @continuum-status-off-wrap-style '#[fg=#f38ba8 bold]#{value}#[default]'

# tmux-yank settings (clipboard integration)
set -g @yank_selection 'primary'
set -g @yank_selection_mouse 'clipboard'

# ──────────────────────────────────────────────────────────────────────────────
# Additional Tweaks
# ──────────────────────────────────────────────────────────────────────────────

# Allow renaming windows
set -g allow-rename on

# Display messages for longer
set -g display-time 2000

# Don't exit copy mode on mouse selection
set -g @yank_action 'copy-pipe-no-clear'

# Bell settings
set -g bell-action none
set -g visual-bell off

# ──────────────────────────────────────────────────────────────────────────────
# Conditional Configuration (host-specific)
# ──────────────────────────────────────────────────────────────────────────────

# Example: Different colors per machine
# %if #{==:#{host_short},laptop}
#     set -g status-style 'bg=#1e3a5f,fg=#cdd6f4'
# %elif #{==:#{host_short},workstation}
#     set -g status-style 'bg=#2d3a1f,fg=#cdd6f4'
# %endif

# ──────────────────────────────────────────────────────────────────────────────
# Initialize TPM (keep at bottom of .tmux.conf)
# ──────────────────────────────────────────────────────────────────────────────

# Install TPM if not already installed
run-shell 'if [ ! -d ~/.tmux/plugins/tpm ]; then git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm; fi'

# Initialize TPM
run '~/.tmux/plugins/tpm/tpm'

# ══════════════════════════════════════════════════════════════════════════════
# Quick Reference
# ══════════════════════════════════════════════════════════════════════════════
#
# Navigation:
#   Alt + Arrows          - Switch panes (no prefix needed!)
#   Shift + Left/Right    - Switch windows
#   Ctrl+Shift + L/R      - Reorder windows
#   Prefix + Arrows       - Resize panes
#   Prefix + Tab          - Last pane
#
# Windows & Panes:
#   Prefix + c            - New window (same directory)
#   Prefix + |            - Split vertical (same directory)
#   Prefix + -            - Split horizontal (same directory)
#   Prefix + x            - Kill pane
#   Prefix + &            - Kill window
#
# Copy Mode:
#   Prefix + [            - Enter copy mode
#   Prefix + Escape       - Enter copy mode
#   v                     - Begin selection (in copy mode)
#   y                     - Copy selection (in copy mode)
#   Prefix + ]            - Paste
#
# Session Management:
#   Prefix + d            - Detach
#   Prefix + s            - List sessions
#   Prefix + $            - Rename session
#   Prefix + (/)          - Previous/Next session
#
# Plugins:
#   Prefix + I            - Install plugins
#   Prefix + U            - Update plugins
#   Prefix + Alt + u      - Uninstall plugins
#
# Session Persistence:
#   Prefix + Ctrl + s     - Save session
#   Prefix + Ctrl + r     - Restore session
#   (Auto-saves every 15 minutes when continuum is active)
#
# Misc:
#   Prefix + r            - Reload config
#   Prefix + ?            - List all keybindings
#   Prefix + :            - Command prompt
#
# ══════════════════════════════════════════════════════════════════════════════