package test

import (
	"fmt"
	"github.com/gruntwork-io/terratest/modules/gcp"
	"github.com/gruntwork-io/terratest/modules/terraform"
	"github.com/gruntwork-io/terratest/modules/test-structure"
	"github.com/stretchr/testify/assert"
	"path/filepath"
	"strings"
	"testing"
)

const NAME_PREFIX_POSTGRES_PRIVATE = "postgres-private"
const EXAMPLE_NAME_POSTGRES_PRIVATE = "postgres-private-ip"

func TestPostgresPrivateIP(t *testing.T) {
	t.Parallel()

	//os.Setenv("SKIP_bootstrap", "true")
	//os.Setenv("SKIP_deploy", "true")
	//os.Setenv("SKIP_validate_outputs", "true")
	//os.Setenv("SKIP_teardown", "true")

	_examplesDir := test_structure.CopyTerraformFolderToTemp(t, "../", "examples")
	exampleDir := filepath.Join(_examplesDir, EXAMPLE_NAME_POSTGRES_PRIVATE)

	test_structure.RunTestStage(t, "bootstrap", func() {
		projectId := gcp.GetGoogleProjectIDFromEnvVar(t)
		region := getRandomRegion(t, projectId)

		test_structure.SaveString(t, exampleDir, KEY_REGION, region)
		test_structure.SaveString(t, exampleDir, KEY_PROJECT, projectId)
	})

	// At the end of the test, run `terraform destroy` to clean up any resources that were created
	defer test_structure.RunTestStage(t, "teardown", func() {
		terraformOptions := test_structure.LoadTerraformOptions(t, exampleDir)
		terraform.Destroy(t, terraformOptions)
	})

	test_structure.RunTestStage(t, "deploy", func() {
		region := test_structure.LoadString(t, exampleDir, KEY_REGION)
		projectId := test_structure.LoadString(t, exampleDir, KEY_PROJECT)
		terraformOptions := createTerratestOptionsForCloudSql(projectId, region, exampleDir, NAME_PREFIX_POSTGRES_PRIVATE, "", "", 0, "")
		test_structure.SaveTerraformOptions(t, exampleDir, terraformOptions)

		terraform.InitAndApply(t, terraformOptions)
	})

	test_structure.RunTestStage(t, "validate_outputs", func() {
		terraformOptions := test_structure.LoadTerraformOptions(t, exampleDir)

		region := test_structure.LoadString(t, exampleDir, KEY_REGION)
		projectId := test_structure.LoadString(t, exampleDir, KEY_PROJECT)

		instanceNameFromOutput := terraform.Output(t, terraformOptions, OUTPUT_MASTER_INSTANCE_NAME)
		ipAddressesFromOutput := terraform.Output(t, terraformOptions, OUTPUT_MASTER_IP_ADDRESSES)
		privateIPFromOutput := terraform.Output(t, terraformOptions, OUTPUT_MASTER_PRIVATE_IP)

		assert.Contains(t, ipAddressesFromOutput, "PRIVATE", "IP Addresses output has to contain 'PRIVATE'")
		assert.Contains(t, ipAddressesFromOutput, privateIPFromOutput, "IP Addresses output has to contain 'private_ip' from output")

		dbNameFromOutput := terraform.Output(t, terraformOptions, OUTPUT_DB_NAME)
		proxyConnectionFromOutput := terraform.Output(t, terraformOptions, OUTPUT_MASTER_PROXY_CONNECTION)

		expectedDBConn := fmt.Sprintf("%s:%s:%s", projectId, region, instanceNameFromOutput)

		assert.True(t, strings.HasPrefix(instanceNameFromOutput, NAME_PREFIX_POSTGRES_PRIVATE))
		assert.Equal(t, DB_NAME, dbNameFromOutput)
		assert.Equal(t, expectedDBConn, proxyConnectionFromOutput)
	})
}