package test

import (
	"context"
	"fmt"
	"io"
	"net/http"
	"testing"
	"time"

	"queryorchestration/internal/serviceconfig"
	"queryorchestration/internal/serviceconfig/objectstore"

	"github.com/docker/go-connections/nat"
	"github.com/stretchr/testify/require"
	"github.com/testcontainers/testcontainers-go"
	"github.com/testcontainers/testcontainers-go/wait"
)

type AWSContainerConfig struct {
	Container        testcontainers.Container
	ExternalEndpoint string
	NetworkEndpoint  string
}

type CreateAWSConfig struct {
	Network *testcontainers.DockerNetwork
}

type AWSConfigProvider interface {
	serviceconfig.ConfigProvider
	objectstore.ConfigProvider
}

func CreateAWSContainer(t testing.TB, ctx context.Context, cfg AWSConfigProvider, acfg *CreateAWSConfig) (*AWSContainerConfig, func()) {
	alias := "localstack"

	port, err := nat.NewPort("tcp", "4566")
	require.NoError(t, err)

	req := testcontainers.ContainerRequest{
		Image: "localstack/localstack:4.1.0",
		Env: map[string]string{
			"AWS_ACCESS_KEY_ID":                      cfg.GetAWSKeyID(),
			"AWS_SECRET_ACCESS_KEY":                  cfg.GetAWSSecretKey(),
			"AWS_SESSION_TOKEN":                      cfg.GetAWSSessionToken(),
			"AWS_REGION":                             cfg.GetAWSRegion(),
			"SERVICES":                               "s3,sqs,cloudwatch,logs",
			"SKIP_SSL_CERT_DOWNLOAD":                 "1",
			"LOCALSTACK_HOST":                        alias,
			"SQS_ENDPOINT_STRATEGY":                  "path",
			"EAGER_SERVICE_LOADING":                  "1",
			"DEBUG":                                  "1",
			"LS_LOG":                                 "trace",
			"SQS_CLOUDWATCH_METRICS_REPORT_INTERVAL": "5",
		},
		ExposedPorts: []string{port.Port()},
		WaitingFor: wait.ForAll(
			wait.ForListeningPort(port),
			wait.ForLog("Ready."),
			wait.ForHTTP("/_localstack/health").
				WithPort(port).
				WithStartupTimeout(50*time.Second).
				WithPollInterval(5*time.Second).
				WithResponseMatcher(func(body io.Reader) bool {
					return true
				}).
				WithStatusCodeMatcher(func(statusCode int) bool {
					return statusCode == http.StatusOK
				}),
		),
	}

	if acfg.Network != nil {
		req.Networks = []string{acfg.Network.Name}
		req.NetworkAliases = map[string][]string{
			acfg.Network.Name: {alias},
		}
	}

	container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{
		ContainerRequest: req,
		Started:          true,
	})
	require.NoError(t, err)

	host, err := container.Host(ctx)
	require.NoError(t, err)
	mappedPort, err := container.MappedPort(ctx, port)
	require.NoError(t, err)

	extEndpoint := fmt.Sprintf("http://%s:%s", host, mappedPort.Port())
	t.Setenv("AWS_ENDPOINT_URL", extEndpoint)
	cfg.SetAWSEndpoint(extEndpoint)
	t.Setenv("AWS_ENDPOINT_URL_SQS", extEndpoint)
	cfg.SetSQSEndpoint(extEndpoint)
	t.Setenv("AWS_ENDPOINT_URL_S3", extEndpoint)
	cfg.SetS3Endpoint(extEndpoint)

	var endpoint string
	if acfg.Network != nil {
		endpoint = fmt.Sprintf("http://%s:%s", alias, port.Port())
		cfg.SetAWSEndpoint(endpoint)
		cfg.SetSQSEndpoint(endpoint)
		cfg.SetS3Endpoint(endpoint)
	}

	return &AWSContainerConfig{
			Container:        container,
			ExternalEndpoint: extEndpoint,
			NetworkEndpoint:  endpoint,
		}, func() {
			err := container.Terminate(ctx)
			if err != nil {
				t.Error(err)
			}
		}
}