package builtin

import (
	"context"
	"encoding/json"
	"testing"

	"nub/internal/skill"
)

func TestReadSkillTool_LoadsBodyByName(t *testing.T) {
	skills := []skill.Skill{
		{Name: "refactoring", Description: "d1", Body: "full refactoring body"},
		{Name: "testing", Description: "d2", Body: "full testing body"},
	}
	rt := NewReadSkillTool(skills)
	env := testEnv(t)

	in, _ := json.Marshal(map[string]string{"name": "refactoring"})
	res, err := rt.Run(context.Background(), in, env)
	if err != nil {
		t.Fatal(err)
	}
	if res.IsError {
		t.Fatalf("unexpected error: %s", res.ForModel)
	}
	if res.ForModel != "full refactoring body" {
		t.Errorf("ForModel = %q", res.ForModel)
	}
}

func TestReadSkillTool_UnknownNameListsAvailable(t *testing.T) {
	skills := []skill.Skill{{Name: "refactoring", Body: "x"}}
	rt := NewReadSkillTool(skills)
	env := testEnv(t)

	in, _ := json.Marshal(map[string]string{"name": "does-not-exist"})
	res, err := rt.Run(context.Background(), in, env)
	if err != nil {
		t.Fatal(err)
	}
	if !res.IsError {
		t.Fatal("expected error for unknown skill name")
	}
	if !contains(res.ForModel, "refactoring") {
		t.Errorf("expected available skills listed in error, got: %q", res.ForModel)
	}
}