format-logs.sh

#!/bin/bash
# Formats Claude Code streaming JSON output into readable logs

while IFS= read -r line; do
    # Skip empty lines
    [ -z "$line" ] && continue
    
    # Try to parse as JSON
    type=$(echo "$line" | grep -o '"type":"[^"]*"' | head -1 | cut -d'"' -f4)
    
    case "$type" in
        "system")
            subtype=$(echo "$line" | grep -o '"subtype":"[^"]*"' | cut -d'"' -f4)
            if [ "$subtype" = "init" ]; then
                model=$(echo "$line" | grep -o '"model":"[^"]*"' | cut -d'"' -f4)
                echo "🚀 Session started (model: $model)"
            fi
            ;;
        "assistant")
            # Extract text content
            text=$(echo "$line" | grep -o '"text":"[^"]*"' | head -1 | cut -d'"' -f4)
            if [ -n "$text" ] && [ "$text" != "null" ]; then
                echo "💭 $text"
            fi
            
            # Check for tool use
            tool=$(echo "$line" | grep -o '"name":"[^"]*"' | head -1 | cut -d'"' -f4)
            if [ -n "$tool" ] && [ "$tool" != "null" ]; then
                # Get description or command if available
                desc=$(echo "$line" | grep -o '"description":"[^"]*"' | cut -d'"' -f4)
                cmd=$(echo "$line" | grep -o '"command":"[^"]*"' | cut -d'"' -f4)
                file=$(echo "$line" | grep -o '"file_path":"[^"]*"' | cut -d'"' -f4)
                
                if [ -n "$desc" ]; then
                    echo "🔧 [$tool] $desc"
                elif [ -n "$cmd" ]; then
                    echo "🔧 [$tool] $cmd"
                elif [ -n "$file" ]; then
                    echo "🔧 [$tool] $file"
                else
                    echo "🔧 [$tool]"
                fi
            fi
            ;;
        "user")
            # Tool result - only show errors
            is_error=$(echo "$line" | grep -o '"is_error":true')
            if [ -n "$is_error" ]; then
                content=$(echo "$line" | grep -o '"content":"[^"]*"' | head -1 | cut -d'"' -f4)
                echo "❌ Error: $content"
            fi
            ;;
        "result")
            subtype=$(echo "$line" | grep -o '"subtype":"[^"]*"' | cut -d'"' -f4)
            cost=$(echo "$line" | grep -o '"total_cost_usd":[0-9.]*' | cut -d':' -f2)
            duration=$(echo "$line" | grep -o '"duration_ms":[0-9]*' | cut -d':' -f2)
            
            if [ "$subtype" = "success" ]; then
                echo ""
                echo "✅ Session completed successfully"
                [ -n "$duration" ] && echo "⏱️  Duration: $((duration / 1000))s"
                [ -n "$cost" ] && echo "💰 Cost: \$${cost}"
            elif [ "$subtype" = "error" ]; then
                echo "❌ Session failed"
            fi
            ;;
    esac
done