package test

import (
	"context"
	"fmt"
	"queryorchestration/internal/server/queue"
	"queryorchestration/internal/serviceconfig"
	"testing"
	"time"

	"github.com/aws/aws-sdk-go-v2/aws"
	"github.com/aws/aws-sdk-go-v2/config"
	"github.com/aws/aws-sdk-go-v2/credentials"
	"github.com/aws/aws-sdk-go-v2/service/sqs"
	"github.com/aws/aws-sdk-go-v2/service/sqs/types"
	"github.com/docker/go-connections/nat"
	"github.com/stretchr/testify/assert"
	"github.com/testcontainers/testcontainers-go"
	"github.com/testcontainers/testcontainers-go/wait"
)

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

type CreateQueueConfig struct {
	Network *testcontainers.DockerNetwork
	Cfg     *serviceconfig.BaseConfig
}

func createQueueContainer(t *testing.T, ctx context.Context, cfg *CreateQueueConfig) (*queueContainerConfig, func()) {
	alias := "localstack"
	provider := credentials.NewStaticCredentialsProvider(cfg.Cfg.AWSKeyID, cfg.Cfg.AWSSecretKey, cfg.Cfg.AWSSessionToken)

	port, err := nat.NewPort("tcp", "4566")
	if err != nil {
		t.Fatalf("Failed to create port: %v", err)
	}

	req := testcontainers.ContainerRequest{
		Image: "localstack/localstack:4.0.3",
		Env: map[string]string{
			"AWS_ACCESS_KEY_ID":      provider.Value.AccessKeyID,
			"AWS_SECRET_ACCESS_KEY":  provider.Value.SecretAccessKey,
			"AWS_SESSION_TOKEN":      provider.Value.SessionToken,
			"AWS_REGION":             cfg.Cfg.AWSRegion,
			"SERVICES":               "sqs",
			"SKIP_SSL_CERT_DOWNLOAD": "1",
			"LOCALSTACK_HOST":        alias,
			"SQS_ENDPOINT_STRATEGY":  "path",
		},
		ExposedPorts: []string{port.Port()},
		WaitingFor: wait.ForAll(
			// wait.ForExposedPort(),
			wait.ForListeningPort(port),
			wait.ForLog("Ready."),
		),
	}

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

	container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{
		ContainerRequest: req,
		Started:          true,
	})
	if err != nil {
		t.Fatalf("Failed to start container: %v", err)
	}

	host, err := container.Host(ctx)
	if err != nil {
		t.Fatalf("Failed to extract host: %v", err)
	}
	mappedPort, err := container.MappedPort(ctx, port)
	if err != nil {
		t.Fatalf("Failed to extract port: %v", err)
	}

	extEndpoint := fmt.Sprintf("http://%s:%s", host, mappedPort.Port())
	t.Setenv("AWS_ENDPOINT_URL_SQS", extEndpoint)
	cfg.Cfg.AWSEndpointUrlSQS = extEndpoint

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

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

func CreateQueueClient(t *testing.T, ctx context.Context, cfg *CreateQueueConfig) func() {
	qcfg, clean := createQueueContainer(t, ctx, cfg)

	provider := credentials.NewStaticCredentialsProvider(cfg.Cfg.AWSKeyID, cfg.Cfg.AWSSecretKey, cfg.Cfg.AWSSessionToken)

	sqsCfg, err := config.LoadDefaultConfig(ctx, config.WithRegion(cfg.Cfg.AWSRegion), config.WithCredentialsProvider(provider), config.WithBaseEndpoint(qcfg.ExternalEndpoint))
	if err != nil {
		t.Fatal(err)
	}

	cfg.Cfg.QueueClient = sqs.NewFromConfig(sqsCfg)

	return clean
}

func CreateQueue(t *testing.T, ctx context.Context, cfg *serviceconfig.BaseConfig, name string) string {
	queueM, err := cfg.QueueClient.CreateQueue(ctx, &sqs.CreateQueueInput{
		QueueName: aws.String(name),
	})
	if err != nil {
		t.Fatal(err)
	}

	return *queueM.QueueUrl
}

func AssertMessageWait(t *testing.T, ctx context.Context, cfg *queue.Config, attrs []string) types.Message {
	time.Sleep(1 * time.Second)

	result, err := queue.Receive(ctx, cfg, attrs)
	assert.NoError(t, err)
	assert.NotNil(t, result.Messages)
	assert.Len(t, result.Messages, 1)
	assert.NotNil(t, result.Messages[0])

	return result.Messages[0]
}

func AssertMessageBodyWait(t *testing.T, ctx context.Context, cfg *queue.Config, body string) {
	message := AssertMessageWait(t, ctx, cfg, []string{})

	assert.Equal(t, body, *message.Body)
}

func AssertMessageAttrWait(t *testing.T, ctx context.Context, cfg *queue.Config, name string, value string) {
	message := AssertMessageWait(t, ctx, cfg, []string{name})

	assert.NotNil(t, message.MessageAttributes[name])
	assert.Equal(t, value, *(message.MessageAttributes[name]).StringValue)
}