package peer

import (
	"cwtch.im/cwtch/event"
	"cwtch.im/cwtch/model"
	"cwtch.im/cwtch/model/attr"
	"cwtch.im/cwtch/protocol/connections"
	"git.openprivacy.ca/cwtch.im/tapir/primitives"
	"git.openprivacy.ca/openprivacy/connectivity"
)

// AccessPeeringState provides access to functions relating to the underlying connections of a peer.
type AccessPeeringState interface {
	GetPeerState(string) (connections.ConnectionState, bool)
}

// ModifyPeeringState is a meta-interface intended to restrict callers to modify-only access to connection peers
type ModifyPeeringState interface {
	BlockUnknownConnections()
	AllowUnknownConnections()
	PeerWithOnion(string)
	JoinServer(string) error
}

// ModifyContactsAndPeers is a meta-interface intended to restrict a call to reading and modifying contacts
// and peers.
type ModifyContactsAndPeers interface {
	ModifyPeeringState
}

// ReadServers provides access to the servers
type ReadServers interface {
	GetServers() []string
}

// ReadGroups provides read-only access to group state
type ReadGroups interface {
	GetGroup(string) *model.Group
	GetGroupState(string) (connections.ConnectionState, bool)
	GetGroups() []string
	ExportGroup(string) (string, error)
}

// ModifyGroups provides write-only access add/edit/remove new groups
type ModifyGroups interface {
	ImportGroup(string) (string, error)
	StartGroup(string) (string, string, error)
}

// ModifyServers provides write-only access to servers
type ModifyServers interface {
	AddServer(string) error
	ResyncServer(onion string) error
}

// SendMessages enables a caller to sender messages to a contact
type SendMessages interface {
	SendMessage(handle string, message string) error

	// Deprecated: is unsafe
	SendGetValToPeer(string, string, string)

	SendScopedZonedGetValToContact(handle string, scope attr.Scope, zone attr.Zone, key string)

	// TODO
	// Deprecated use overlays instead
	InviteOnionToGroup(string, string) error
}

// ModifyMessages enables a caller to modify the messages in a timeline
type ModifyMessages interface {
	UpdateMessageFlags(string, int, uint64)
}

// CwtchPeer provides us with a way of testing systems built on top of cwtch without having to
// directly implement a cwtchPeer.
type CwtchPeer interface {

	// Core Cwtch Peer Functions that should not be exposed to
	// most functions
	Init(event.Manager)
	GetIdentity() primitives.Identity
	GenerateProtocolEngine(acn connectivity.ACN, bus event.Manager) connections.Engine

	AutoHandleEvents(events []event.Type)
	Listen()
	StartPeersConnections()
	StartServerConnections()
	Shutdown()

	// GetOnion is deprecated. If you find yourself needing to rely on this method it is time
	// to consider replacing this with a GetAddress(es) function that can fully expand cwtch beyond the boundaries
	// of tor v3 onion services.
	// Deprecated
	GetOnion() string

	// SetScopedZonedAttribute allows the setting of an attribute by scope and zone
	// scope.zone.key = value
	SetScopedZonedAttribute(scope attr.Scope, zone attr.Zone, key string, value string)

	// GetScopedZonedAttribute allows the retrieval of an attribute by scope and zone
	// scope.zone.key = value
	GetScopedZonedAttribute(scope attr.Scope, zone attr.Zone, key string) (string, bool)

	AccessPeeringState
	ModifyPeeringState

	ReadGroups
	ModifyGroups

	ReadServers
	ModifyServers

	SendMessages
	ModifyMessages

	// New Unified Conversation Interfaces
	NewContactConversation(handle string, acl model.AccessControl, accepted bool) error
	FetchConversations() ([]*model.Conversation, error)
	FetchConversationInfo(handle string) (*model.Conversation, error)
	AcceptConversation(conversation int) error
	SetConversationAttribute(conversation int, path attr.ScopedZonedPath, value string) error
	GetConversationAttribute(conversation int, path attr.ScopedZonedPath) (string, error)
	DeleteConversation(conversation int) error

	GetChannelMessage(conversation int, channel int, id int) (string, model.Attributes, error)

	ShareFile(fileKey string, serializedManifest string)
}