package vault

import (
	"log"
	"testing"

	"github.com/hashicorp/vault/audit"
	"github.com/hashicorp/vault/logical"
	"github.com/hashicorp/vault/logical/framework"
	"github.com/hashicorp/vault/physical"
)

// This file contains a number of methods that are useful for unit
// tests within other packages.

// TestCore returns a pure in-memory, uninitialized core for testing.
func TestCore(t *testing.T) *Core {
	noopAudits := map[string]audit.Factory{
		"noop": func(map[string]string) (audit.Backend, error) {
			return new(noopAudit), nil
		},
	}
	noopBackends := make(map[string]logical.Factory)
	noopBackends["noop"] = func(map[string]string) (logical.Backend, error) {
		return new(framework.Backend), nil
	}
	noopBackends["http"] = func(map[string]string) (logical.Backend, error) {
		return new(rawHTTP), nil
	}

	physicalBackend := physical.NewInmem()
	c, err := NewCore(&CoreConfig{
		Physical:           physicalBackend,
		AuditBackends:      noopAudits,
		LogicalBackends:    noopBackends,
		CredentialBackends: noopBackends,
		DisableMlock:       true,
	})
	if err != nil {
		t.Fatalf("err: %s", err)
	}

	return c
}

// TestCoreInit initializes the core with a single key, and returns
// the key that must be used to unseal the core and a root token.
func TestCoreInit(t *testing.T, core *Core) ([]byte, string) {
	result, err := core.Initialize(&SealConfig{
		SecretShares:    1,
		SecretThreshold: 1,
	})
	if err != nil {
		t.Fatalf("err: %s", err)
	}
	return result.SecretShares[0], result.RootToken
}

// TestCoreUnsealed returns a pure in-memory core that is already
// initialized and unsealed.
func TestCoreUnsealed(t *testing.T) (*Core, []byte, string) {
	core := TestCore(t)
	key, token := TestCoreInit(t, core)
	if _, err := core.Unseal(TestKeyCopy(key)); err != nil {
		t.Fatalf("unseal err: %s", err)
	}

	sealed, err := core.Sealed()
	if err != nil {
		t.Fatalf("err checking seal status: %s", err)
	}
	if sealed {
		t.Fatal("should not be sealed")
	}

	return core, key, token
}

// TestKeyCopy is a silly little function to just copy the key so that
// it can be used with Unseal easily.
func TestKeyCopy(key []byte) []byte {
	result := make([]byte, len(key))
	copy(result, key)
	return result
}

type noopAudit struct{}

func (n *noopAudit) LogRequest(a *logical.Auth, r *logical.Request) error {
	return nil
}

func (n *noopAudit) LogResponse(a *logical.Auth, r *logical.Request, re *logical.Response, err error) error {
	return nil
}

type rawHTTP struct{}

func (n *rawHTTP) HandleRequest(req *logical.Request) (*logical.Response, error) {
	return &logical.Response{
		Data: map[string]interface{}{
			logical.HTTPStatusCode:  200,
			logical.HTTPContentType: "plain/text",
			logical.HTTPRawBody:     []byte("hello world"),
		},
	}, nil
}

func (n *rawHTTP) SpecialPaths() *logical.Paths {
	return &logical.Paths{Unauthenticated: []string{"*"}}
}

func (n *rawHTTP) SetLogger(l *log.Logger) {}