package domain

import "time"

type PluginLifecycleState string

const (
	PluginLifecycleStatePending     PluginLifecycleState = "pending"
	PluginLifecycleStateInstalled   PluginLifecycleState = "installed"
	PluginLifecycleStateEnabled     PluginLifecycleState = "enabled"
	PluginLifecycleStateDisabled    PluginLifecycleState = "disabled"
	PluginLifecycleStateUpgrading   PluginLifecycleState = "upgrading"
	PluginLifecycleStateRollingBack PluginLifecycleState = "rolling_back"
	PluginLifecycleStateRetired     PluginLifecycleState = "retired"
	PluginLifecycleStateFailed      PluginLifecycleState = "failed"
)

type PluginLifecycleOperation string

const (
	PluginLifecycleOperationInstall         PluginLifecycleOperation = "install"
	PluginLifecycleOperationEnable          PluginLifecycleOperation = "enable"
	PluginLifecycleOperationDisable         PluginLifecycleOperation = "disable"
	PluginLifecycleOperationUpgrade         PluginLifecycleOperation = "upgrade"
	PluginLifecycleOperationRollback        PluginLifecycleOperation = "rollback"
	PluginLifecycleOperationRetire          PluginLifecycleOperation = "retire"
	PluginLifecycleOperationDependencyCheck PluginLifecycleOperation = "dependency-check"
)

type PluginLifecycleInstallation struct {
	ID               string
	PluginID         string
	ServerInstanceID string
	CurrentVersion   string
	TargetVersion    string
	PreviousVersion  string
	DesiredState     PluginLifecycleState
	CurrentState     PluginLifecycleState
	LastOperation    PluginLifecycleOperation
	Compatibility    string
	DependencyState  DependencyState
	JobID            string
	FailureReason    string
	IdempotencyKey   string
	CreatedAt        time.Time
	UpdatedAt        time.Time
}

type PluginLifecycleFilter struct {
	PluginID         string
	ServerInstanceID string
	CurrentState     PluginLifecycleState
}

type PluginLifecycleRequest struct {
	PluginID         string
	ServerInstanceID string
	Operation        PluginLifecycleOperation
	TargetVersion    string
	IdempotencyKey   string
}

type PluginLifecycleResult struct {
	Installation PluginLifecycleInstallation
	Job          Job
	Status       string
}

type AIConfigDiffState string

const (
	AIConfigDiffStatePending   AIConfigDiffState = "pending"
	AIConfigDiffStateApproved  AIConfigDiffState = "approved"
	AIConfigDiffStateCancelled AIConfigDiffState = "cancelled"
	AIConfigDiffStateExpired   AIConfigDiffState = "expired"
)

type AIConfigDiffPreview struct {
	ID                     string
	RequestID              string
	CreatedBy              string
	ServerInstanceID       string
	PluginID               string
	ProviderID             string
	Model                  string
	Key                    string
	ConfigVersion          int
	CurrentConfigChecksum  string
	ProposedConfig         string
	DiffSummary            string
	State                  AIConfigDiffState
	ExpiresAt              time.Time
	ApprovedBy             string
	ApprovedAt             time.Time
	ApprovalIdempotencyKey string
	CancelledBy            string
	CancelledAt            time.Time
	JobID                  string
	CreatedAt              time.Time
	UpdatedAt              time.Time
}

type AIConfigDiffFilter struct {
	ServerInstanceID string
	PluginID         string
	State            AIConfigDiffState
}

type AIConfigDiffApprovalRequest struct {
	DiffID         string
	IdempotencyKey string
}

type AIConfigDiffApprovalResult struct {
	Preview  AIConfigDiffPreview
	Dispatch ServerConfigWriteDispatch
}

func CopyPluginLifecycleInstallation(installation PluginLifecycleInstallation) PluginLifecycleInstallation {
	return installation
}

func CopyPluginLifecycleInstallations(installations []PluginLifecycleInstallation) []PluginLifecycleInstallation {
	if installations == nil {
		return nil
	}
	out := make([]PluginLifecycleInstallation, len(installations))
	copy(out, installations)
	return out
}

func CopyPluginLifecycleResult(result PluginLifecycleResult) PluginLifecycleResult {
	result.Installation = CopyPluginLifecycleInstallation(result.Installation)
	result.Job = CopyJob(result.Job)
	return result
}

func CopyAIConfigDiffPreview(preview AIConfigDiffPreview) AIConfigDiffPreview {
	return preview
}

func CopyAIConfigDiffPreviews(previews []AIConfigDiffPreview) []AIConfigDiffPreview {
	if previews == nil {
		return nil
	}
	out := make([]AIConfigDiffPreview, len(previews))
	copy(out, previews)
	return out
}

func CopyAIConfigDiffApprovalResult(result AIConfigDiffApprovalResult) AIConfigDiffApprovalResult {
	result.Preview = CopyAIConfigDiffPreview(result.Preview)
	result.Dispatch = CopyServerConfigWriteDispatch(result.Dispatch)
	return result
}