package amazonebs

import (
	"github.com/mitchellh/packer/packer"
	"testing"
)

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",
	}
}

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{},
	}

	err := b.Prepare(c)
	if err == nil {
		t.Fatalf("prepare should fail")
	}
}

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

	// Test good
	config["access_key"] = "foo"
	err := b.Prepare(config)
	if err != nil {
		t.Fatalf("should not have error: %s", err)
	}

	if b.config.AccessKey != "foo" {
		t.Errorf("access key invalid: %s", b.config.AccessKey)
	}

	// Test bad
	delete(config, "access_key")
	b = Builder{}
	err = b.Prepare(config)
	if err == nil {
		t.Fatal("should have error")
	}
}

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

	// Test good
	config["instance_type"] = "foo"
	err := b.Prepare(config)
	if err != nil {
		t.Fatalf("should not have error: %s", err)
	}

	if b.config.InstanceType != "foo" {
		t.Errorf("invalid: %s", b.config.InstanceType)
	}

	// Test bad
	delete(config, "instance_type")
	b = Builder{}
	err = b.Prepare(config)
	if err == nil {
		t.Fatal("should have error")
	}
}

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

	// Test good
	config["region"] = "us-east-1"
	err := b.Prepare(config)
	if err != nil {
		t.Fatalf("should not have error: %s", err)
	}

	if b.config.Region != "us-east-1" {
		t.Errorf("invalid: %s", b.config.Region)
	}

	// Test bad
	delete(config, "region")
	b = Builder{}
	err = b.Prepare(config)
	if err == nil {
		t.Fatal("should have error")
	}

	// Test invalid
	config["region"] = "i-am-not-real"
	b = Builder{}
	err = b.Prepare(config)
	if err == nil {
		t.Fatal("should have error")
	}
}

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

	// Test good
	config["secret_key"] = "foo"
	err := b.Prepare(config)
	if err != nil {
		t.Fatalf("should not have error: %s", err)
	}

	if b.config.SecretKey != "foo" {
		t.Errorf("secret key invalid: %s", b.config.SecretKey)
	}

	// Test bad
	delete(config, "secret_key")
	b = Builder{}
	err = b.Prepare(config)
	if err == nil {
		t.Fatal("should have error")
	}
}

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

	// Test good
	config["source_ami"] = "foo"
	err := b.Prepare(config)
	if err != nil {
		t.Fatalf("should not have error: %s", err)
	}

	if b.config.SourceAmi != "foo" {
		t.Errorf("invalid: %s", b.config.SourceAmi)
	}

	// Test bad
	delete(config, "source_ami")
	b = Builder{}
	err = b.Prepare(config)
	if err == nil {
		t.Fatal("should have error")
	}
}

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

	// Test default
	err := b.Prepare(config)
	if err != nil {
		t.Fatalf("should not have error: %s", err)
	}

	if b.config.SSHPort != 22 {
		t.Errorf("invalid: %d", b.config.SSHPort)
	}

	// Test set
	config["ssh_port"] = 35
	b = Builder{}
	err = b.Prepare(config)
	if err != nil {
		t.Fatalf("should not have error: %s", err)
	}

	if b.config.SSHPort != 35 {
		t.Errorf("invalid: %d", b.config.SSHPort)
	}
}

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

	// Test good
	config["ssh_username"] = "foo"
	err := b.Prepare(config)
	if err != nil {
		t.Fatalf("should not have error: %s", err)
	}

	if b.config.SSHUsername != "foo" {
		t.Errorf("invalid: %s", b.config.SSHUsername)
	}

	// Test bad
	delete(config, "ssh_username")
	b = Builder{}
	err = b.Prepare(config)
	if err == nil {
		t.Fatal("should have error")
	}
}