package extension

import (
	core "agent-system-core"
	"context"
)

// ProjectHost is an optional actor-scoped host projection capability. Metadata
// can be shared by an authorizer; registered-lifecycle metadata masks credentials.
// OwnedProject remains an owner-only management lookup. A request-bound
// delegated projection may carry a separate real operator and fixed creator;
// its final Store transaction checks both accounts and the persisted owner.
type ProjectHost interface {
	Owner() string
	OwnedProjects() ([]core.Project, error)
	ProjectMetadata(projectID string) (core.Project, error)
	OwnedProject(projectID string) (core.Project, error)
	EnsureProject(projectID, name string) (core.Project, error)
	RenameOwnedProject(projectID, name string) (core.Project, error)
	ProjectNameAvailable(name, exceptID string) (bool, error)
}

// DelegatedProjectProjectionHost is an optional capability of a current,
// authenticated RDM request Host. It derives a single-project creator
// projection while retaining the original operator for final account fencing.
// A globally reconstructed ScopedHost does not implement this capability.
type DelegatedProjectProjectionHost interface {
	ProjectProjectionForCreator(creator, projectID string) (ProjectHost, error)
}

// ProjectLifecycle supplies the domain's public project lifecycle and live work
// authorization. Each Host is scoped to the authenticated actor. Errors with a
// StatusCode() int method may report 400, 403, 404, 409, or 503 to HTTP clients.
type ProjectLifecycle struct {
	List    func(context.Context, Host) ([]core.Project, error)
	Create  func(context.Context, Host, string) (core.Project, error)
	Rename  func(context.Context, Host, string, string) (core.Project, error)
	Archive func(context.Context, Host, string) error
	Work    func(context.Context, string, core.ID) (bool, error)
}

// ProjectLifecycleRegistry is optional so older Registry implementations retain
// their contract. Only in-process plugins can register one complete provider.
type ProjectLifecycleRegistry interface {
	RegisterProjectLifecycle(ProjectLifecycle) error
}