Status line below Claude Code CLI prompt input

statusline-command.sh

#!/usr/bin/env bash
# Claude Code status line — inspired by the af-magic oh-my-zsh theme

input=$(cat)

cwd=$(echo "$input" | jq -r '.workspace.current_dir // .cwd // empty')
model=$(echo "$input" | jq -r '.model.display_name // empty')
used=$(echo "$input" | jq -r '.context_window.used_percentage // empty')

# Shorten path: replace $HOME with ~, then keep last 3 components for deep paths
if [ -n "$cwd" ]; then
  home="$HOME"
  short_path="${cwd/#$home/\~}"
  # Count path components (split by /)
  depth=$(echo "$short_path" | tr -cd '/' | wc -c | tr -d ' ')
  if [ "$depth" -ge 4 ]; then
    parent=$(echo "$short_path" | rev | cut -d'/' -f1-3 | rev)
    first=$(echo "$short_path" | cut -d'/' -f1)
    short_path="${first}/…/${parent}"
  fi
fi

# Git branch + diff stats (skip optional lock)
git_info=""
if git -C "$cwd" rev-parse --git-dir >/dev/null 2>&1; then
  git_branch=$(git -C "$cwd" symbolic-ref --short HEAD 2>/dev/null || git -C "$cwd" rev-parse --short HEAD 2>/dev/null)
  if [ -n "$git_branch" ]; then
    diff_stat=$(git -C "$cwd" diff --shortstat 2>/dev/null)
    added=$(echo "$diff_stat" | grep -oE '[0-9]+ insertion' | grep -oE '[0-9]+')
    removed=$(echo "$diff_stat" | grep -oE '[0-9]+ deletion' | grep -oE '[0-9]+')
    diff_info=""
    if [ -n "$added" ] || [ -n "$removed" ]; then
      diff_info=" (+${added:-0} -${removed:-0})"
    fi
    git_info="git:${git_branch}${diff_info}"
  fi
fi

# LiteLLM budget (cached for 60s)
litellm_info=""
cache_file="/tmp/.claude-litellm-cache"
cache_ttl=60
now=$(date +%s)
if [ -f "$cache_file" ]; then
  cache_age=$(( now - $(stat -f '%m' "$cache_file" 2>/dev/null || echo 0) ))
else
  cache_age=$((cache_ttl + 1))
fi
if [ "$cache_age" -gt "$cache_ttl" ]; then
  litellm_json=$(dp-devinfra litellm usage -o json 2>/dev/null)
  if [ -n "$litellm_json" ]; then
    echo "$litellm_json" > "$cache_file"
  fi
else
  litellm_json=$(cat "$cache_file" 2>/dev/null)
fi
if [ -n "$litellm_json" ]; then
  spend=$(echo "$litellm_json" | jq -r '.spend // empty')
  budget=$(echo "$litellm_json" | jq -r '.totalBudget // empty')
  if [ -n "$spend" ] && [ -n "$budget" ]; then
    litellm_info="Usage: $(printf '%.1f' "$spend")/$(printf '%.0f' "$budget")"
  fi
fi

# ANSI colors (use $'...' for real escape bytes)
blue=$'\033[34m'
green=$'\033[32m'
cyan=$'\033[36m'
yellow=$'\033[33m'
red=$'\033[31m'
magenta=$'\033[35m'
dim=$'\033[2m'
reset=$'\033[0m'

# Build output parts with colors
parts=()

[ -n "$short_path" ] && parts+=("${blue}${short_path}${reset}")

if [ -n "$git_branch" ]; then
  colored_git="${green}git:${git_branch}${reset}"
  if [ -n "$added" ] || [ -n "$removed" ]; then
    colored_git+=" (${green}+${added:-0}${reset} ${red}-${removed:-0}${reset})"
  fi
  parts+=("$colored_git")
fi

[ -n "$model" ] && parts+=("${cyan}${model}${reset}")

if [ -n "$used" ]; then
  pct=$(printf '%.0f' "$used")
  if [ "$pct" -ge 80 ]; then
    ctx_color=$red
  elif [ "$pct" -ge 50 ]; then
    ctx_color=$yellow
  else
    ctx_color=$green
  fi
  parts+=("${ctx_color}ctx:${pct}%${reset}")
fi

[ -n "$litellm_info" ] && parts+=("${magenta}${litellm_info}${reset}")

sep="${dim} · ${reset}"
output=""
for i in "${!parts[@]}"; do
  [ "$i" -gt 0 ] && output+="$sep"
  output+="${parts[$i]}"
done
printf '%s' "$output"