set-environment -g PATH "/usr/local/bin:/bin:/usr/bin"

# remap prefix from 'C-b' to 'C-a'
unbind C-b
set-option -g prefix C-a
bind-key C-a send-prefix
set-option -g default-terminal "screen-256color"

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

set-option -g default-shell /usr/bin/fish

# window and pane index number starts at 1
set -g base-index 1
setw -g pane-base-index 1

# vi-mode
set-window-option -g mode-keys vi
bind-key -T copy-mode-vi v send-keys begin-selection
bind -T copy-mode-vi y send-keys -X copy-pipe-and-cancel 'wl-copy'

# reload config file (change file location to your the tmux.conf you want to use)
bind r source-file /home/minhradz/.tmux.conf

# is_vim="children=(); i=0; pids=( $(ps -o pid= -t '#{pane_tty}') ); \
# while read -r c p; do [[ -n c && c -ne p && p -ne 0 ]] && children[p]+=\" $\{c\}\"; done <<< \"$(ps -Ao pid=,ppid=)\"; \
# while (( $\{#pids[@]\} > i )); do pid=$\{pids[i++]\}; pids+=( $\{children[pid]-\} ); done; \
# ps -o state=,comm= -p \"$\{pids[@]\}\" | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|l?vim?x?)(diff)?$'"

is_vim="ps -o state= -o comm= -t '#{pane_tty}' | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"

bind-key -n 'C-h' if-shell "$is_vim" 'send-keys C-h' { if -F '#{pane_at_left}' '' 'select-pane -L' }
bind-key -n 'C-j' if-shell "$is_vim" 'send-keys C-j' { if -F '#{pane_at_bottom}' '' 'select-pane -D' }
bind-key -n 'C-k' if-shell "$is_vim" 'send-keys C-k' { if -F '#{pane_at_top}' '' 'select-pane -U' }
bind-key -n 'C-l' if-shell "$is_vim" 'send-keys C-l' { if -F '#{pane_at_right}' '' 'select-pane -R' }

bind-key -T copy-mode-vi 'C-h' if -F '#{pane_at_left}' '' 'select-pane -L'
bind-key -T copy-mode-vi 'C-j' if -F '#{pane_at_bottom}' '' 'select-pane -D'
bind-key -T copy-mode-vi 'C-k' if -F '#{pane_at_top}' '' 'select-pane -U'
bind-key -T copy-mode-vi 'C-l' if -F '#{pane_at_right}' '' 'select-pane -R'

bind -n 'M-h' if-shell "$is_vim" 'send-keys M-h' 'resize-pane -L 1'
bind -n 'M-j' if-shell "$is_vim" 'send-keys M-j' 'resize-pane -D 1'
bind -n 'M-k' if-shell "$is_vim" 'send-keys M-k' 'resize-pane -U 1'
bind -n 'M-l' if-shell "$is_vim" 'send-keys M-l' 'resize-pane -R 1'

bind-key -T copy-mode-vi M-h resize-pane -L 1
bind-key -T copy-mode-vi M-j resize-pane -D 1
bind-key -T copy-mode-vi M-k resize-pane -U 1
bind-key -T copy-mode-vi M-l resize-pane -R 1

# Enable mouse mode (tmux 2.1 and above)
set -g mouse on

# Neovim escape time
set-option -sg escape-time 1
set-option -g focus-events on

######################
### DESIGN CHANGES ###
######################

# loud or quiet?
set -g visual-activity off
set -g visual-bell off
set -g visual-silence off
setw -g monitor-activity off
set -g bell-action none

# List of plugins
set -g @plugin 'tmux-plugins/tpm'
set -g @plugin "arcticicestudio/nord-tmux"
set -g @plugin 'tmux-plugins/tmux-resurrect'
set -g @plugin 'tmux-plugins/tmux-continuum'

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