package engine

import (
	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource"
)

// Engine ...
type Engine interface {
	// IsAllowed returns status for the operation after all checks.
	// The second return value signifies whether a matching rule was found.
	IsAllowed(name chain.Name, namespace string, r resource.Request) (chain.Status, bool)
}

// CachedChainStorage ...
type CachedChainStorage interface {
	Engine
	// Adds a policy chain used for all operations with a specific resource.
	AddResourceChain(name chain.Name, resource string, c *chain.Chain)
	// Adds a policy chain used for all operations in the namespace.
	AddNameSpaceChain(name chain.Name, namespace string, c *chain.Chain)
	// Adds a local policy chain used for all operations with this service.
	AddOverride(name chain.Name, c *chain.Chain)
	// Gets the local override with given chain id.
	GetOverride(name chain.Name, chainID chain.ID) (chain *chain.Chain, found bool)
	// Remove the local override with given chain id.
	RemoveOverride(name chain.Name, chainID chain.ID) (removed bool)
	// ListOverrides returns the list of local overrides.
	ListOverrides(name chain.Name) []*chain.Chain
}