package ec2

import (
	"bytes"
	"encoding/json"
	"fmt"

	"github.com/awslabs/goformation/v3/cloudformation/policies"
	"github.com/awslabs/goformation/v3/cloudformation/tags"
)

// Instance AWS CloudFormation Resource (AWS::EC2::Instance)
// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html
type Instance struct {

	// AdditionalInfo AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-additionalinfo
	AdditionalInfo string `json:"AdditionalInfo,omitempty"`

	// Affinity AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-affinity
	Affinity string `json:"Affinity,omitempty"`

	// AvailabilityZone AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-availabilityzone
	AvailabilityZone string `json:"AvailabilityZone,omitempty"`

	// BlockDeviceMappings AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-blockdevicemappings
	BlockDeviceMappings []Instance_BlockDeviceMapping `json:"BlockDeviceMappings,omitempty"`

	// CpuOptions AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-cpuoptions
	CpuOptions *Instance_CpuOptions `json:"CpuOptions,omitempty"`

	// CreditSpecification AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-creditspecification
	CreditSpecification *Instance_CreditSpecification `json:"CreditSpecification,omitempty"`

	// DisableApiTermination AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-disableapitermination
	DisableApiTermination bool `json:"DisableApiTermination,omitempty"`

	// EbsOptimized AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-ebsoptimized
	EbsOptimized bool `json:"EbsOptimized,omitempty"`

	// ElasticGpuSpecifications AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-elasticgpuspecifications
	ElasticGpuSpecifications []Instance_ElasticGpuSpecification `json:"ElasticGpuSpecifications,omitempty"`

	// ElasticInferenceAccelerators AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-elasticinferenceaccelerators
	ElasticInferenceAccelerators []Instance_ElasticInferenceAccelerator `json:"ElasticInferenceAccelerators,omitempty"`

	// HostId AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-hostid
	HostId string `json:"HostId,omitempty"`

	// IamInstanceProfile AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-iaminstanceprofile
	IamInstanceProfile string `json:"IamInstanceProfile,omitempty"`

	// ImageId AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-imageid
	ImageId string `json:"ImageId,omitempty"`

	// InstanceInitiatedShutdownBehavior AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-instanceinitiatedshutdownbehavior
	InstanceInitiatedShutdownBehavior string `json:"InstanceInitiatedShutdownBehavior,omitempty"`

	// InstanceType AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-instancetype
	InstanceType string `json:"InstanceType,omitempty"`

	// Ipv6AddressCount AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-ipv6addresscount
	Ipv6AddressCount int `json:"Ipv6AddressCount,omitempty"`

	// Ipv6Addresses AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-ipv6addresses
	Ipv6Addresses []Instance_InstanceIpv6Address `json:"Ipv6Addresses,omitempty"`

	// KernelId AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-kernelid
	KernelId string `json:"KernelId,omitempty"`

	// KeyName AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-keyname
	KeyName string `json:"KeyName,omitempty"`

	// LaunchTemplate AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-launchtemplate
	LaunchTemplate *Instance_LaunchTemplateSpecification `json:"LaunchTemplate,omitempty"`

	// LicenseSpecifications AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-licensespecifications
	LicenseSpecifications []Instance_LicenseSpecification `json:"LicenseSpecifications,omitempty"`

	// Monitoring AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-monitoring
	Monitoring bool `json:"Monitoring,omitempty"`

	// NetworkInterfaces AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-networkinterfaces
	NetworkInterfaces []Instance_NetworkInterface `json:"NetworkInterfaces,omitempty"`

	// PlacementGroupName AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-placementgroupname
	PlacementGroupName string `json:"PlacementGroupName,omitempty"`

	// PrivateIpAddress AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-privateipaddress
	PrivateIpAddress string `json:"PrivateIpAddress,omitempty"`

	// RamdiskId AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-ramdiskid
	RamdiskId string `json:"RamdiskId,omitempty"`

	// SecurityGroupIds AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-securitygroupids
	SecurityGroupIds []string `json:"SecurityGroupIds,omitempty"`

	// SecurityGroups AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-securitygroups
	SecurityGroups []string `json:"SecurityGroups,omitempty"`

	// SourceDestCheck AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-sourcedestcheck
	SourceDestCheck bool `json:"SourceDestCheck,omitempty"`

	// SsmAssociations AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-ssmassociations
	SsmAssociations []Instance_SsmAssociation `json:"SsmAssociations,omitempty"`

	// SubnetId AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-subnetid
	SubnetId string `json:"SubnetId,omitempty"`

	// Tags AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-tags
	Tags []tags.Tag `json:"Tags,omitempty"`

	// Tenancy AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-tenancy
	Tenancy string `json:"Tenancy,omitempty"`

	// UserData AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-userdata
	UserData string `json:"UserData,omitempty"`

	// Volumes AWS CloudFormation Property
	// Required: false
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-volumes
	Volumes []Instance_Volume `json:"Volumes,omitempty"`

	// _creationPolicy represents a CloudFormation CreationPolicy
	_creationPolicy *policies.CreationPolicy

	// _deletionPolicy represents a CloudFormation DeletionPolicy
	_deletionPolicy policies.DeletionPolicy

	// _dependsOn stores the logical ID of the resources to be created before this resource
	_dependsOn []string

	// _metadata stores structured data associated with this resource
	_metadata map[string]interface{}
}

// AWSCloudFormationType returns the AWS CloudFormation resource type
func (r *Instance) AWSCloudFormationType() string {
	return "AWS::EC2::Instance"
}

// DependsOn returns a slice of logical ID names this resource depends on.
// see: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-attribute-dependson.html
func (r *Instance) DependsOn() []string {
	return r._dependsOn
}

// SetDependsOn specify that the creation of this resource follows another.
// see: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-attribute-dependson.html
func (r *Instance) SetDependsOn(dependencies []string) {
	r._dependsOn = dependencies
}

// Metadata returns the metadata associated with this resource.
// see: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-attribute-metadata.html
func (r *Instance) Metadata() map[string]interface{} {
	return r._metadata
}

// SetMetadata enables you to associate structured data with this resource.
// see: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-attribute-metadata.html
func (r *Instance) SetMetadata(metadata map[string]interface{}) {
	r._metadata = metadata
}

// DeletionPolicy returns the AWS CloudFormation DeletionPolicy to this resource
// see: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-attribute-deletionpolicy.html
func (r *Instance) DeletionPolicy() policies.DeletionPolicy {
	return r._deletionPolicy
}

// SetDeletionPolicy applies an AWS CloudFormation DeletionPolicy to this resource
// see: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-attribute-deletionpolicy.html
func (r *Instance) SetDeletionPolicy(policy policies.DeletionPolicy) {
	r._deletionPolicy = policy
}

// SetCreationPolicy applies an AWS CloudFormation CreationPolicy to this resource
// see: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-attribute-creationpolicy.html
func (r *Instance) SetCreationPolicy(policy *policies.CreationPolicy) {
	r._creationPolicy = policy
}

// MarshalJSON is a custom JSON marshalling hook that embeds this object into
// an AWS CloudFormation JSON resource's 'Properties' field and adds a 'Type'.
func (r Instance) MarshalJSON() ([]byte, error) {
	type Properties Instance
	return json.Marshal(&struct {
		Type           string
		Properties     Properties
		DependsOn      []string                `json:"DependsOn,omitempty"`
		Metadata       map[string]interface{}  `json:"Metadata,omitempty"`
		DeletionPolicy policies.DeletionPolicy `json:"DeletionPolicy,omitempty"`

		CreationPolicy *policies.CreationPolicy `json:"CreationPolicy,omitempty"`
	}{
		Type:           r.AWSCloudFormationType(),
		Properties:     (Properties)(r),
		DependsOn:      r._dependsOn,
		Metadata:       r._metadata,
		DeletionPolicy: r._deletionPolicy,

		CreationPolicy: r._creationPolicy,
	})
}

// UnmarshalJSON is a custom JSON unmarshalling hook that strips the outer
// AWS CloudFormation resource object, and just keeps the 'Properties' field.
func (r *Instance) UnmarshalJSON(b []byte) error {
	type Properties Instance
	res := &struct {
		Type           string
		Properties     *Properties
		DependsOn      []string
		Metadata       map[string]interface{}
		DeletionPolicy string
	}{}

	dec := json.NewDecoder(bytes.NewReader(b))
	dec.DisallowUnknownFields() // Force error if unknown field is found

	if err := dec.Decode(&res); err != nil {
		fmt.Printf("ERROR: %s\n", err)
		return err
	}

	// If the resource has no Properties set, it could be nil
	if res.Properties != nil {
		*r = Instance(*res.Properties)
	}
	if res.DependsOn != nil {
		r._dependsOn = res.DependsOn
	}
	if res.Metadata != nil {
		r._metadata = res.Metadata
	}
	if res.DeletionPolicy != "" {
		r._deletionPolicy = policies.DeletionPolicy(res.DeletionPolicy)
	}
	return nil
}
