Claude Code Status Line - Enhanced Edition

statusline-enhanced.sh

#!/bin/bash
# Claude Code Status Line - Enhanced Edition
# Optimized: single jq call, colored progress bar, compressed path

# Read JSON input from stdin
input=$(cat)

# Extract all fields in one jq call for performance
eval "$(echo "$input" | jq -r '
  @sh "model_name=\(.model.display_name // "unknown")",
  @sh "current_dir=\(.workspace.current_dir // ".")",
  @sh "context_percent=\(.context_window.used_percentage // 0 | floor)",
  @sh "session_cost=\(.cost.total_cost_usd // 0)",
  @sh "duration_ms=\(.cost.total_duration_ms // 0)",
  @sh "output_style=\(.output_style.name // "default")"
' | tr '\n' ' ')"

# Compress path: ~/workspace/vibecoding/interviewer -> ~/w/v/interviewer
compress_path() {
    local path="$1"
    path="${path/#$HOME/~}"
    echo "$path" | awk -F'/' '{
        if (NF <= 2) { print; next }
        result = ""
        for (i = 1; i < NF; i++) {
            if ($i == "" || $i == "~") { result = result $i "/" }
            else { result = result substr($i, 1, 1) "/" }
        }
        print result $NF
    }'
}

# Format duration: ms -> human readable
format_duration() {
    local ms=$1
    if [ "$ms" -ge 60000 ]; then
        echo "$((ms / 60000))m$((ms % 60000 / 1000))s"
    elif [ "$ms" -ge 1000 ]; then
        echo "$((ms / 1000))s"
    else
        echo "${ms}ms"
    fi
}

short_path=$(compress_path "$current_dir")
duration_fmt=$(format_duration "$duration_ms")

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
BLUE='\033[0;34m'
YELLOW='\033[0;33m'
CYAN='\033[0;36m'
MAGENTA='\033[0;35m'
GRAY='\033[0;90m'
NC='\033[0m'

# Build colored progress bar (15 chars wide)
bar_width=15
filled=$((context_percent * bar_width / 100))
empty=$((bar_width - filled))

# Color based on usage: green < 50%, yellow 50-80%, red > 80%
if [ "$context_percent" -ge 80 ]; then
    bar_color=$RED
elif [ "$context_percent" -ge 50 ]; then
    bar_color=$YELLOW
else
    bar_color=$GREEN
fi

bar="${bar_color}"
for ((i=0; i<filled; i++)); do bar+="█"; done
bar+="${GRAY}"
for ((i=0; i<empty; i++)); do bar+="░"; done
bar+="${NC}"

# Git info
cd "$current_dir" 2>/dev/null || cd /
git_info=""
if git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
    branch=$(git branch --show-current 2>/dev/null || echo "detached")
    status_output=$(git status --porcelain 2>/dev/null)

    if [ -n "$status_output" ]; then
        total_files=$(echo "$status_output" | wc -l | xargs)
        line_stats=$(git diff --numstat HEAD 2>/dev/null | awk '{added+=$1; removed+=$2} END {print added+0, removed+0}')
        added=$(echo $line_stats | cut -d' ' -f1)
        removed=$(echo $line_stats | cut -d' ' -f2)

        git_info="${YELLOW}${branch}${NC} ${GRAY}${total_files}f${NC}"
        [ "$added" -gt 0 ] && git_info+=" ${GREEN}+${added}${NC}"
        [ "$removed" -gt 0 ] && git_info+=" ${RED}-${removed}${NC}"
    else
        git_info="${YELLOW}${branch}${NC}"
    fi
fi

# Format cost
cost_info=""
if [ "$(echo "$session_cost > 0" | bc -l)" = "1" ]; then
    cost_fmt=$(printf "%.4f" "$session_cost")
    cost_info="${GRAY}\$${cost_fmt}${NC}"
fi

# Output style (skip if default or empty)
style_info=""
output_style_lower=$(echo "$output_style" | tr '[:upper:]' '[:lower:]')
if [ -n "$output_style" ] && [ "$output_style_lower" != "default" ] && [ "$output_style" != "null" ] && [ "$output_style" != "" ]; then
    style_info="${MAGENTA}${output_style}${NC}"
fi

# Build status line
sep="${GRAY}│${NC}"
output="${BLUE}${short_path}${NC} ${sep} ${CYAN}${model_name}${NC}"
[ -n "$style_info" ] && output+=" ${sep} ${style_info}"
output+=" ${sep} ${bar} ${context_percent}%"
[ -n "$git_info" ] && output+=" ${sep} ${git_info}"
output+=" ${sep} ${GRAY}${duration_fmt}${NC}"
[ -n "$cost_info" ] && output+=" ${sep} ${cost_info}"

echo -e "$output"