package google

import (
	"fmt"
	"regexp"
	"testing"

	"github.com/hashicorp/terraform/helper/acctest"
	"github.com/hashicorp/terraform/helper/resource"
)

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

	fr := fmt.Sprintf("forwardrule-test-%s", acctest.RandString(10))
	proxy := fmt.Sprintf("forwardrule-test-%s", acctest.RandString(10))
	proxyUpdated := fmt.Sprintf("forwardrule-test-%s", acctest.RandString(10))
	backend := fmt.Sprintf("forwardrule-test-%s", acctest.RandString(10))
	hc := fmt.Sprintf("forwardrule-test-%s", acctest.RandString(10))
	urlmap := fmt.Sprintf("forwardrule-test-%s", acctest.RandString(10))

	resource.Test(t, resource.TestCase{
		PreCheck:     func() { testAccPreCheck(t) },
		Providers:    testAccProviders,
		CheckDestroy: testAccCheckComputeGlobalForwardingRuleDestroy,
		Steps: []resource.TestStep{
			{
				Config: testAccComputeGlobalForwardingRule_httpProxy(fr, "proxy", proxy, proxyUpdated, backend, hc, urlmap),
				Check: resource.ComposeTestCheckFunc(
					resource.TestMatchResourceAttr(
						"google_compute_global_forwarding_rule.forwarding_rule", "target", regexp.MustCompile(proxy+"$")),
				),
			},
			{
				ResourceName:      "google_compute_global_forwarding_rule.forwarding_rule",
				ImportState:       true,
				ImportStateVerify: true,
			},
			{
				Config: testAccComputeGlobalForwardingRule_httpProxy(fr, "proxy2", proxy, proxyUpdated, backend, hc, urlmap),
				Check: resource.ComposeTestCheckFunc(
					resource.TestMatchResourceAttr(
						"google_compute_global_forwarding_rule.forwarding_rule", "target", regexp.MustCompile(proxyUpdated+"$")),
				),
			},
			{
				ResourceName:      "google_compute_global_forwarding_rule.forwarding_rule",
				ImportState:       true,
				ImportStateVerify: true,
			},
		},
	})
}

func TestAccComputeGlobalForwardingRule_ipv6(t *testing.T) {
	t.Parallel()

	fr := fmt.Sprintf("forwardrule-test-%s", acctest.RandString(10))
	proxy := fmt.Sprintf("forwardrule-test-%s", acctest.RandString(10))
	backend := fmt.Sprintf("forwardrule-test-%s", acctest.RandString(10))
	hc := fmt.Sprintf("forwardrule-test-%s", acctest.RandString(10))
	urlmap := fmt.Sprintf("forwardrule-test-%s", acctest.RandString(10))

	resource.Test(t, resource.TestCase{
		PreCheck:     func() { testAccPreCheck(t) },
		Providers:    testAccProviders,
		CheckDestroy: testAccCheckComputeGlobalForwardingRuleDestroy,
		Steps: []resource.TestStep{
			{
				Config: testAccComputeGlobalForwardingRule_ipv6(fr, proxy, backend, hc, urlmap),
				Check: resource.ComposeTestCheckFunc(
					resource.TestCheckResourceAttr(
						"google_compute_global_forwarding_rule.forwarding_rule", "ip_version", "IPV6"),
				),
			},
			{
				ResourceName:      "google_compute_global_forwarding_rule.forwarding_rule",
				ImportState:       true,
				ImportStateVerify: true,
			},
		},
	})
}

func testAccComputeGlobalForwardingRule_httpProxy(fr, targetProxy, proxy, proxy2, backend, hc, urlmap string) string {
	return fmt.Sprintf(`
	resource "google_compute_global_forwarding_rule" "forwarding_rule" {
		description = "Resource created for Terraform acceptance testing"
		ip_protocol = "TCP"
		name = "%s"
		port_range = "80"
		target = "${google_compute_target_http_proxy.%s.self_link}"
	}

	resource "google_compute_target_http_proxy" "proxy" {
		description = "Resource created for Terraform acceptance testing"
		name = "%s"
		url_map = "${google_compute_url_map.url_map.self_link}"
	}

	resource "google_compute_target_http_proxy" "proxy2" {
		description = "Resource created for Terraform acceptance testing"
		name = "%s"
		url_map = "${google_compute_url_map.url_map.self_link}"
	}

	resource "google_compute_backend_service" "backend" {
		name = "%s"
		health_checks = ["${google_compute_http_health_check.zero.self_link}"]
	}

	resource "google_compute_http_health_check" "zero" {
		name = "%s"
		request_path = "/"
		check_interval_sec = 1
		timeout_sec = 1
	}

	resource "google_compute_url_map" "url_map" {
		name = "%s"
		default_service = "${google_compute_backend_service.backend.self_link}"
		host_rule {
			hosts = ["mysite.com", "myothersite.com"]
			path_matcher = "boop"
		}
		path_matcher {
			default_service = "${google_compute_backend_service.backend.self_link}"
			name = "boop"
			path_rule {
				paths = ["/*"]
				service = "${google_compute_backend_service.backend.self_link}"
			}
		}
		test {
			host = "mysite.com"
			path = "/*"
			service = "${google_compute_backend_service.backend.self_link}"
		}
	}`, fr, targetProxy, proxy, proxy2, backend, hc, urlmap)
}

func testAccComputeGlobalForwardingRule_ipv6(fr, proxy, backend, hc, urlmap string) string {
	return fmt.Sprintf(`
	resource "google_compute_global_forwarding_rule" "forwarding_rule" {
		description = "Resource created for Terraform acceptance testing"
		ip_protocol = "TCP"
		name = "%s"
		port_range = "80"
		target = "${google_compute_target_http_proxy.proxy.self_link}"
		ip_version = "IPV6"
	}

	resource "google_compute_target_http_proxy" "proxy" {
		description = "Resource created for Terraform acceptance testing"
		name = "%s"
		url_map = "${google_compute_url_map.urlmap.self_link}"
	}

	resource "google_compute_backend_service" "backend" {
		name = "%s"
		health_checks = ["${google_compute_http_health_check.zero.self_link}"]
	}

	resource "google_compute_http_health_check" "zero" {
		name = "%s"
		request_path = "/"
		check_interval_sec = 1
		timeout_sec = 1
	}

	resource "google_compute_url_map" "urlmap" {
		name = "%s"
		default_service = "${google_compute_backend_service.backend.self_link}"
		host_rule {
			hosts = ["mysite.com", "myothersite.com"]
			path_matcher = "boop"
		}
		path_matcher {
			default_service = "${google_compute_backend_service.backend.self_link}"
			name = "boop"
			path_rule {
				paths = ["/*"]
				service = "${google_compute_backend_service.backend.self_link}"
			}
		}
		test {
			host = "mysite.com"
			path = "/*"
			service = "${google_compute_backend_service.backend.self_link}"
		}
	}`, fr, proxy, backend, hc, urlmap)
}