Claude Code statusLine with git info, changed files count, and daily token usage tracking

statusline-script.sh

#!/bin/bash

# Read JSON input from Claude Code
input=$(cat)

# Extract values from JSON input
project_dir=$(echo "$input" | jq -r '.workspace.project_dir')
current_dir=$(echo "$input" | jq -r '.workspace.current_dir')
model=$(echo "$input" | jq -r '.model.display_name')

# Get relative path for display
if [ "$current_dir" != "$project_dir" ]; then
    rel_path=$(realpath --relative-to="$project_dir" "$current_dir" 2>/dev/null || echo "$(basename "$project_dir")/$(basename "$current_dir")")
else
    rel_path=$(basename "$project_dir")
fi

# Git information
if git -C "$current_dir" rev-parse --git-dir >/dev/null 2>&1; then
    git_branch=$(git -C "$current_dir" -c core.preloadindex=false -c core.fscache=true -c gc.auto=0 branch --show-current 2>/dev/null || echo 'detached')
    git_status=$(git -C "$current_dir" -c core.preloadindex=false -c core.fscache=true -c gc.auto=0 status --porcelain=v1 2>/dev/null)

    if [ -n "$git_status" ]; then
        git_dirty='*'
        changed_count=$(echo "$git_status" | wc -l | tr -d ' ')
        git_info=" ($changed_count)"
    else
        git_dirty=''
        git_info=''
    fi

    git_part="$git_branch$git_dirty$git_info"
else
    git_part=""
fi

# Token usage tracking using ccusage
# Cache the usage data for 5 minutes to avoid running ccusage too frequently
cache_file="/tmp/claude_usage_cache"
cache_age=300  # 5 minutes in seconds

# Check if cache exists and is recent
if [ -f "$cache_file" ] && [ $(($(date +%s) - $(stat -f %m "$cache_file" 2>/dev/null || echo 0))) -lt $cache_age ]; then
    token_usage=$(cat "$cache_file")
else
    # Run ccusage and extract today's usage
    today_pattern="$(date +%m-%d)"
    usage_output=$(npx --yes ccusage@latest 2>/dev/null | sed 's/\x1b\[[0-9;]*m//g' | grep -B1 "$today_pattern" | head -1)

    if [ -n "$usage_output" ] && echo "$usage_output" | grep -q "│"; then
        # Extract total tokens and cost from today's row
        total_tokens=$(echo "$usage_output" | awk -F'│' '{print $7}' | tr -d ' ')
        daily_cost=$(echo "$usage_output" | awk -F'│' '{print $9}' | tr -d ' ')

        # Format the usage display (convert to millions for readability)
        if [ -n "$total_tokens" ] && [ "$total_tokens" != "" ] && [ "$total_tokens" != "Total" ]; then
            # Remove commas and ellipsis for processing
            clean_tokens=$(echo "$total_tokens" | sed 's/,//g' | sed 's/…//g')

            # Check if it's a truncated number (contains …)
            if echo "$total_tokens" | grep -q "…"; then
                # For truncated numbers like "13,065,…" assume it's in thousands
                tokens_m=$(echo "scale=1; $clean_tokens / 1000" | bc 2>/dev/null || echo "0")
            else
                # For complete numbers, convert to millions
                tokens_m=$(echo "scale=1; $clean_tokens / 1000000" | bc 2>/dev/null || echo "0")
            fi

            # Clean up the cost (remove $ and any extra characters)
            clean_cost=$(echo "$daily_cost" | sed 's/\$//g' | sed 's/,//g')

            # Format the final display
            if [ -n "$clean_cost" ] && [ "$clean_cost" != "" ]; then
                token_usage="today: ${tokens_m}M • \$${clean_cost}"
            else
                token_usage="today: ${tokens_m}M"
            fi
            echo "$token_usage" > "$cache_file"
        else
            token_usage="usage unavailable"
        fi
    else
        token_usage="usage unavailable"
    fi
fi

# Build status line
if [ -n "$git_part" ]; then
    printf '%s %s • %s • %s' "$rel_path" "$git_part" "$model" "$token_usage"
else
    printf '%s • %s • %s' "$rel_path" "$model" "$token_usage"
fi