// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0

package resource

import (
	"context"
	"fmt"
	"testing"

	"github.com/stretchr/testify/mock"
	"github.com/stretchr/testify/require"
	"google.golang.org/grpc"
	"google.golang.org/protobuf/types/known/anypb"

	"github.com/hashicorp/go-uuid"

	"github.com/hashicorp/consul/acl"
	"github.com/hashicorp/consul/acl/resolver"
	"github.com/hashicorp/consul/agent/grpc-external/testutils"
	"github.com/hashicorp/consul/agent/structs"
	"github.com/hashicorp/consul/internal/resource"
	"github.com/hashicorp/consul/internal/storage/inmem"
	"github.com/hashicorp/consul/proto-public/pbresource"
	pbdemov2 "github.com/hashicorp/consul/proto/private/pbdemo/v2"
	"github.com/hashicorp/consul/sdk/testutil"
)

func randomACLIdentity(t *testing.T) structs.ACLIdentity {
	id, err := uuid.GenerateUUID()
	require.NoError(t, err)

	return &structs.ACLToken{AccessorID: id}
}

func AuthorizerFrom(t *testing.T, policyStrs ...string) resolver.Result {
	policies := []*acl.Policy{}
	for _, policyStr := range policyStrs {
		policy, err := acl.NewPolicyFromSource(policyStr, nil, nil)
		require.NoError(t, err)
		policies = append(policies, policy)
	}

	authz, err := acl.NewPolicyAuthorizerWithDefaults(acl.DenyAll(), policies, nil)
	require.NoError(t, err)

	return resolver.Result{
		Authorizer:  authz,
		ACLIdentity: randomACLIdentity(t),
	}
}

func testServer(t *testing.T) *Server {
	t.Helper()

	backend, err := inmem.NewBackend()
	require.NoError(t, err)
	go backend.Run(testContext(t))

	// Mock the ACL Resolver to "allow all" for testing.
	mockACLResolver := &MockACLResolver{}
	mockACLResolver.On("ResolveTokenAndDefaultMeta", mock.Anything, mock.Anything, mock.Anything).
		Return(testutils.ACLsDisabled(t), nil).
		Run(func(args mock.Arguments) {
			// Caller expecting passed in tokenEntMeta and authorizerContext to be filled in.
			tokenEntMeta := args.Get(1).(*acl.EnterpriseMeta)
			if tokenEntMeta != nil {
				fillEntMeta(tokenEntMeta)
			}

			authzContext := args.Get(2).(*acl.AuthorizerContext)
			if authzContext != nil {
				fillAuthorizerContext(authzContext)
			}
		})

	// Mock the V1 tenancy bridge since we can't use the real thing.
	mockTenancyBridge := &MockTenancyBridge{}
	mockTenancyBridge.On("PartitionExists", resource.DefaultPartitionName).Return(true, nil)
	mockTenancyBridge.On("NamespaceExists", resource.DefaultPartitionName, resource.DefaultNamespaceName).Return(true, nil)
	mockTenancyBridge.On("PartitionExists", mock.Anything).Return(false, nil)
	mockTenancyBridge.On("NamespaceExists", mock.Anything, mock.Anything).Return(false, nil)

	return NewServer(Config{
		Logger:          testutil.Logger(t),
		Registry:        resource.NewRegistry(),
		Backend:         backend,
		ACLResolver:     mockACLResolver,
		V1TenancyBridge: mockTenancyBridge,
	})
}

func testClient(t *testing.T, server *Server) pbresource.ResourceServiceClient {
	t.Helper()

	addr := testutils.RunTestServer(t, server)

	//nolint:staticcheck
	conn, err := grpc.DialContext(context.Background(), addr.String(), grpc.WithInsecure())
	require.NoError(t, err)
	t.Cleanup(func() {
		require.NoError(t, conn.Close())
	})

	return pbresource.NewResourceServiceClient(conn)
}

func testContext(t *testing.T) context.Context {
	t.Helper()

	ctx, cancel := context.WithCancel(context.Background())
	t.Cleanup(cancel)
	return ctx
}

func modifyArtist(t *testing.T, res *pbresource.Resource) *pbresource.Resource {
	t.Helper()

	var artist pbdemov2.Artist
	require.NoError(t, res.Data.UnmarshalTo(&artist))
	artist.Name = fmt.Sprintf("The artist formerly known as %s", artist.Name)

	data, err := anypb.New(&artist)
	require.NoError(t, err)

	res = clone(res)
	res.Data = data
	return res
}