package testsuite

import (
	"context"
	"net/url"
	"reflect"
	"testing"

	"forge.cadoles.com/cadoles/bouncer/internal/store"
	"github.com/pkg/errors"
)

type proxyRepositoryTestCase struct {
	Name string
	Do   func(repo store.ProxyRepository) error
}

var proxyRepositoryTestCases = []proxyRepositoryTestCase{
	{
		Name: "Create proxy",
		Do: func(repo store.ProxyRepository) error {
			ctx := context.Background()

			url, err := url.Parse("http://example.com")
			if err != nil {
				return errors.WithStack(err)
			}

			proxy, err := repo.CreateProxy(ctx, url, "*:*")
			if err != nil {
				return errors.WithStack(err)
			}

			if proxy == nil {
				return errors.Errorf("proxy should not be nil")
			}

			if proxy.ID == "" {
				return errors.Errorf("proxy.ID should not be empty")
			}

			if proxy.To == nil {
				return errors.Errorf("proxy.To should not be nil")
			}

			if e, g := url.String(), proxy.To.String(); e != g {
				return errors.Errorf("proxy.URL.String(): expected '%v', got '%v'", url.String(), proxy.To.String())
			}

			if proxy.CreatedAt.IsZero() {
				return errors.Errorf("proxy.CreatedAt should not be zero value")
			}

			if proxy.UpdatedAt.IsZero() {
				return errors.Errorf("proxy.UpdatedAt should not be zero value")
			}

			return nil
		},
	},
	{
		Name: "Create then get proxy",
		Do: func(repo store.ProxyRepository) error {
			ctx := context.Background()

			url, err := url.Parse("http://example.com")
			if err != nil {
				return errors.WithStack(err)
			}

			createdProxy, err := repo.CreateProxy(ctx, url, "127.0.0.1:*", "localhost:*")
			if err != nil {
				return errors.WithStack(err)
			}

			foundProxy, err := repo.GetProxy(ctx, createdProxy.ID)
			if err != nil {
				return errors.WithStack(err)
			}

			if e, g := createdProxy.ID, foundProxy.ID; e != g {
				return errors.Errorf("foundProxy.ID: expected '%v', got '%v'", createdProxy.ID, foundProxy.ID)
			}

			if e, g := createdProxy.From, foundProxy.From; !reflect.DeepEqual(e, g) {
				return errors.Errorf("foundProxy.From: expected '%v', got '%v'", createdProxy.From, foundProxy.From)
			}

			if e, g := createdProxy.To.String(), foundProxy.To.String(); e != g {
				return errors.Errorf("foundProxy.To: expected '%v', got '%v'", createdProxy.To, foundProxy.To)
			}

			if e, g := createdProxy.CreatedAt, foundProxy.CreatedAt; e != g {
				return errors.Errorf("foundProxy.CreatedAt: expected '%v', got '%v'", createdProxy.CreatedAt, foundProxy.CreatedAt)
			}

			if e, g := createdProxy.UpdatedAt, foundProxy.UpdatedAt; e != g {
				return errors.Errorf("foundProxy.UpdatedAt: expected '%v', got '%v'", createdProxy.UpdatedAt, foundProxy.UpdatedAt)
			}

			return nil
		},
	},
	{
		Name: "Create then delete proxy",
		Do: func(repo store.ProxyRepository) error {
			ctx := context.Background()

			url, err := url.Parse("http://example.com")
			if err != nil {
				return errors.WithStack(err)
			}

			createdProxy, err := repo.CreateProxy(ctx, url, "127.0.0.1:*", "localhost:*")
			if err != nil {
				return errors.WithStack(err)
			}

			if err := repo.DeleteProxy(ctx, createdProxy.ID); err != nil {
				return errors.WithStack(err)
			}

			foundProxy, err := repo.GetProxy(ctx, createdProxy.ID)
			if err == nil {
				return errors.New("err should not be nil")
			}

			if !errors.Is(err, store.ErrNotFound) {
				return errors.Errorf("err should be store.ErrNotFound, got '%+v'", err)
			}

			if foundProxy != nil {
				return errors.Errorf("foundProxy should be nil, got '%v'", foundProxy)
			}

			return nil
		},
	},
	{
		Name: "Create then query",
		Do: func(repo store.ProxyRepository) error {
			ctx := context.Background()

			url, err := url.Parse("http://example.com")
			if err != nil {
				return errors.WithStack(err)
			}

			createdProxy, err := repo.CreateProxy(ctx, url, "127.0.0.1:*", "localhost:*")
			if err != nil {
				return errors.WithStack(err)
			}

			headers, err := repo.QueryProxy(ctx)
			if err != nil {
				return errors.WithStack(err)
			}

			if len(headers) < 1 {
				return errors.Errorf("len(headers): expected value > 1, got '%v'", len(headers))
			}

			found := false

			for _, h := range headers {
				if h.ID == createdProxy.ID {
					found = true
					break
				}
			}

			if !found {
				return errors.New("could not find created proxy in query results")
			}

			return nil
		},
	},
}

func TestProxyRepository(t *testing.T, repo store.ProxyRepository) {
	for _, tc := range proxyRepositoryTestCases {
		func(tc proxyRepositoryTestCase) {
			t.Run(tc.Name, func(t *testing.T) {
				if err := tc.Do(repo); err != nil {
					t.Fatalf("%+v", errors.WithStack(err))
				}
			})
		}(tc)
	}
}