package ebs

import (
	"testing"

	"github.com/hashicorp/packer/packer"
)

func testConfig() map[string]interface{} {
	return map[string]interface{}{
		"access_key":    "foo",
		"secret_key":    "bar",
		"source_ami":    "foo",
		"instance_type": "foo",
		"region":        "us-east-1",
		"ssh_username":  "root",
		"ami_name":      "foo",
	}
}

func TestBuilder_ImplementsBuilder(t *testing.T) {
	var raw interface{}
	raw = &Builder{}
	if _, ok := raw.(packer.Builder); !ok {
		t.Fatalf("Builder should be a builder")
	}
}

func TestBuilder_Prepare_BadType(t *testing.T) {
	b := &Builder{}
	c := map[string]interface{}{
		"access_key": []string{},
	}

	_, warnings, err := b.Prepare(c)
	if len(warnings) > 0 {
		t.Fatalf("bad: %#v", warnings)
	}
	if err == nil {
		t.Fatalf("prepare should fail")
	}
}

func TestBuilderPrepare_AMIName(t *testing.T) {
	var b Builder
	config := testConfig()

	// Test good
	config["ami_name"] = "foo"
	config["skip_region_validation"] = true
	_, warnings, err := b.Prepare(config)
	if len(warnings) > 0 {
		t.Fatalf("bad: %#v", warnings)
	}
	if err != nil {
		t.Fatalf("should not have error: %s", err)
	}

	// Test bad
	config["ami_name"] = "foo {{"
	b = Builder{}
	_, warnings, err = b.Prepare(config)
	if len(warnings) > 0 {
		t.Fatalf("bad: %#v", warnings)
	}
	if err == nil {
		t.Fatal("should have error")
	}

	// Test bad
	delete(config, "ami_name")
	b = Builder{}
	_, warnings, err = b.Prepare(config)
	if len(warnings) > 0 {
		t.Fatalf("bad: %#v", warnings)
	}
	if err == nil {
		t.Fatal("should have error")
	}
}

func TestBuilderPrepare_InvalidKey(t *testing.T) {
	var b Builder
	config := testConfig()

	// Add a random key
	config["i_should_not_be_valid"] = true
	_, warnings, err := b.Prepare(config)
	if len(warnings) > 0 {
		t.Fatalf("bad: %#v", warnings)
	}
	if err == nil {
		t.Fatal("should have error")
	}
}

func TestBuilderPrepare_InvalidShutdownBehavior(t *testing.T) {
	var b Builder
	config := testConfig()

	// Test good
	config["shutdown_behavior"] = "terminate"
	config["skip_region_validation"] = true
	_, warnings, err := b.Prepare(config)
	if len(warnings) > 0 {
		t.Fatalf("bad: %#v", warnings)
	}
	if err != nil {
		t.Fatalf("should not have error: %s", err)
	}

	// Test good
	config["shutdown_behavior"] = "stop"
	_, warnings, err = b.Prepare(config)
	if len(warnings) > 0 {
		t.Fatalf("bad: %#v", warnings)
	}
	if err != nil {
		t.Fatalf("should not have error: %s", err)
	}

	// Test bad
	config["shutdown_behavior"] = "foobar"
	_, warnings, err = b.Prepare(config)
	if len(warnings) > 0 {
		t.Fatalf("bad: %#v", warnings)
	}
	if err == nil {
		t.Fatal("should have error")
	}
}

func TestBuilderPrepare_ReturnGeneratedData(t *testing.T) {
	var b Builder
	config := testConfig()

	generatedData, warnings, err := b.Prepare(config)
	if len(warnings) > 0 {
		t.Fatalf("bad: %#v", warnings)
	}
	if err != nil {
		t.Fatalf("should not have error: %s", err)
	}
	if len(generatedData) == 0 {
		t.Fatalf("Generated data should not be empty")
	}
	if len(generatedData) == 0 {
		t.Fatalf("Generated data should not be empty")
	}
	if generatedData[0] != "SourceAMIName" {
		t.Fatalf("Generated data should contain SourceAMIName")
	}
	if generatedData[1] != "BuildRegion" {
		t.Fatalf("Generated data should contain BuildRegion")
	}
	if generatedData[2] != "SourceAMI" {
		t.Fatalf("Generated data should contain SourceAMI")
	}
	if generatedData[3] != "SourceAMICreationDate" {
		t.Fatalf("Generated data should contain SourceAMICreationDate")
	}
	if generatedData[4] != "SourceAMIOwner" {
		t.Fatalf("Generated data should contain SourceAMIOwner")
	}
	if generatedData[5] != "SourceAMIOwnerName" {
		t.Fatalf("Generated data should contain SourceAMIOwnerName")
	}
}