package tools

import (
	"context"
	"encoding/json"
	"strings"

	"ollie/toolsrv"
)

// SkillActive lists skills currently loaded in this session.
func SkillActive(ctx context.Context, srv *toolsrv.Server, args json.RawMessage) (string, error) {
	reg := srv.SkillsRegistry()
	sid := srv.SessionID()
	if reg == nil || sid == "" {
		return "(no skills loaded)", nil
	}
	loaded := reg.Loaded(sid)
	if len(loaded) == 0 {
		return "(no skills loaded)", nil
	}
	var out strings.Builder
	for _, s := range loaded {
		out.WriteString(s.Name)
		if s.Description != "" {
			out.WriteString(" — ")
			out.WriteString(s.Description)
		}
		out.WriteString("\n")
	}
	return strings.TrimRight(out.String(), "\n"), nil
}