From 3d0d1e57cdb9bc2a13122dfa084f3afe643e76f6 Mon Sep 17 00:00:00 2001
From: Oliver Ladner <oliver.ladner@unic.com>
Date: Mon, 29 Jan 2024 12:21:02 +0100
Subject: [PATCH] finalize tmux

---
 .tmux.conf | 31 +++++++++++++++++++------
 tmux.sh    | 66 ++++++++++++++++++++++++++++++++++++++++--------------
 2 files changed, 73 insertions(+), 24 deletions(-)

diff --git a/.tmux.conf b/.tmux.conf
index 21bd8df..e653465 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -1,16 +1,32 @@
 # Source changes without restarting tmux:
 #   tmux source-file ~/.tmux.conf
+# I have a custom Planck EZ layer for tmux
+# so I don't have to adjust keyboard shortcuts
+#
+# Still, the most important ones to me:
+# Prefix is Ctrl+b, then:
+# c             create new window
+# n             switch to next window
+# <n>           switch to windows <n>
+# o             switch to next pane
+# %             split pane vertically
+# "             split pane horizontally
+# <Space>       change layout when having more than one pane
+# ,             rename active window
 
 # I don't know
 set -g mouse on
 
-# Mouse scroll speed
+# Increase scrollback history
+set-option -g history-limit 50000
+
+# Faster mouse scrolling
 set -g @scroll-speed-num-lines-per-scroll 5
 
 # Vi mode to copy things from terminal
 setw -g mode-keys vi
 
-# Count panes from 1
+# Count panes from 1 instead of 0
 set -g base-index 1
 setw -g pane-base-index 1
 
@@ -19,19 +35,20 @@ set -g status-style fg=#9d7cd8,bg=#16161e
 set-window-option -g window-status-current-style bg=#3e3158
 set -g status-position top
 set -g status-interval 10
-set -g status-left-length 120
-set -g status-left ' New: 󰘴bc Ren: 󰘴b, Go: 󰘴b<n> '
+set -g status-left-length 60
+set -g status-left '  Remember tmux layer'
 set -g status-justify centre
 set -g status-right "#( ~/tmux.sh )"
-set -g status-right-length 120
+set -g status-right-length 60
 
 # Get good colors
-set-option -g default-terminal "screen-256color"
+# https://www.reddit.com/r/tmux/comments/mesrci/tmux_2_doesnt_seem_to_use_256_colors/
+#set-option -g default-terminal "screen-256color"
 set -g default-terminal "tmux-256color"
 set -ga terminal-overrides ",*256col*:Tc"
 set -ga terminal-overrides '*:Ss=\E[%p1%d q:Se=\E[ q'
 set-environment -g COLORTERM "truecolor"
 
 # Display messages longer (ms)
-set-option -g display-time 4000
+#set-option -g display-time 4000
 
diff --git a/tmux.sh b/tmux.sh
index 3b569d7..4333ec8 100755
--- a/tmux.sh
+++ b/tmux.sh
@@ -1,24 +1,56 @@
 #!/usr/bin/env bash
 
-# This is not as good as activity monitor, as it shows per-core not overall usage
-cpu=$(ps -Ac -o %cpu,comm | sort -nk1 | grep -vE "(top)" | tail -1 \
-    | awk -v OFMT=%.0f '{print int($1+0.5)"%",$2,$3}')
+# This doesn't show overall/summarized CPU usage as e.g. macOS Activity Monitor
+# But still capable of showing high/multicore process CPU usage
+cpu_usage=$(ps -Ac -o %cpu,comm | sort -nk1 | grep -vE "(top)" | tail -1)
+float=$(echo "$cpu_usage" | awk '{print $1}')
+cpu_percent=${float%.*}
+cpu_procname=$(echo "$cpu_usage" | awk '{print $2,$3,$4}')
 
 # nettop needs at least two samples (-L 2) to calculate a delta
-# the beasty awk then throws away the first 50% samples (n=50) with bogus data
-# and sorts it by bytes_in
+# the beasty awk then throws away the first 50% samples (n=50) with bogus
+# data and sorts it by bytes_in
 bandwidth=$(nettop -t wifi -P -J bytes_in,bytes_out -d -x -L 2 \
-    | grep -v '^time' | sort -k1 | awk -v n=50 '{a[FNR]=$0; \
-    min=FNR-int(FNR*n/100)} {i=min; while(i in a) delete a[i--]} \
-    END{for(i=min+1;i<=FNR;++i) print a[i]}' - | sed 's/,$//' \
-    | sed 's#\.[0-9]*##g' | sort -t',' -k 3 -n | tail -1  | \
-    awk -F',' {'print $2,"↓ "int($3/1000) " KB/s ↑",int($4/1000) " KB/s"'}
-)
+| grep -v '^time' | sort -k1 | awk -v n=50 '{a[FNR]=$0; \
+min=FNR-int(FNR*n/100)} {i=min; while(i in a) delete a[i--]} \
+END{for(i=min+1;i<=FNR;++i) print a[i]}' - | sed 's/,$//' \
+| sed 's#\.[0-9]*##g' | sort -t',' -k 3 -n | tail -1  | \
+awk -F',' '{print $3,$4,$2}')
 
-# Pings the default gateway and returns avg ping. Three ping counts recommended
-# for a reasonably meaningful average
-rtt=$(ping -t 2 -q -c 3 "$(route -n get default | awk '$1 ~ "gateway:" \
-    {print $2}')" | awk -F'/' '$1 ~ "round-trip" {print int($5) " ms"}')
+value=$(echo "$bandwidth" | awk '{print $1}')
+    if [ "$value" -lt 1000 ]; then
+        bw_down=$(echo "$value" | awk '{print int($1),"B/s"}')
+    elif [ "$value" -ge 1000 ] && [ "$value" -lt 1000000 ]; then
+        bw_down=$(echo "$value" | awk '{print int($1/1000),"kB/s"}')
+    elif [ "$value" -ge 1000000 ]; then
+        bw_down=$(echo "$value" | awk '{print int($1/1000^2),"MB/s"}')
+    fi
+value=$(echo "$bandwidth" | awk '{print $2}')
+    if [ "$value" -lt 1000 ]; then
+        bw_up=$(echo "$value" | awk '{print int($2),"B/s"}')
+    elif [ "$value" -ge 1000 ] && [ "$value" -lt 1000000 ]; then
+        bw_up=$(echo "$value" | awk '{print int($2/1000),"kB/s"}')
+    elif [ "$value" -ge 1000000 ]; then
+        bw_up=$(echo "$value" | awk '{print int($2/1000^2),"MB/s"}')
+    fi
+    bw_procname=$(echo "$bandwidth" | awk '{print $3,$4,$5}')
 
-# Icons are shipped with a font from https://www.nerdfonts.com/font-downloads
-echo "󱍢 $rtt   $bandwidth  $cpu"
+# Pings the default gateway and returns avg ping. Three ping counts
+# recommended for a reasonably meaningful average
+ping=$(ping -t 2 -q -c 3 "$(route -n get default | \
+    awk '$1 ~ "gateway:" {print $2}')" | \
+    awk -F'/' '$1 ~ "round-trip" {print int($5)}')
+
+# cpu load 4 digits max, smaller value is padded
+# cpu process name right padded
+cpu=$(printf "%4d%% %#-14.14s" "$cpu_percent" "$cpu_procname")
+
+# up/download 8 digits max each, pad smaller value (has units baked in)
+# process name right padded
+bandwidth=$(printf "↓%8s ↑%8s %#-14.14s" "$bw_down" "$bw_up" "$bw_procname")
+
+# cpu load 4 digits max, smaller value is padded
+ping=$(printf "%4dms " "$ping")
+
+# Combine all printf formatted metrics
+echo "$ping $bandwidth $cpu"