package api

import (
	"context"

	fsAPI "github.com/matrix-org/dendrite/federationsender/api"
)

// RoomserverInputAPI is used to write events to the room server.
type RoomserverInternalAPI interface {
	// needed to avoid chicken and egg scenario when setting up the
	// interdependencies between the roomserver and other input APIs
	SetFederationSenderAPI(fsAPI fsAPI.FederationSenderInternalAPI)

	InputRoomEvents(
		ctx context.Context,
		request *InputRoomEventsRequest,
		response *InputRoomEventsResponse,
	) error

	PerformJoin(
		ctx context.Context,
		req *PerformJoinRequest,
		res *PerformJoinResponse,
	) error

	PerformLeave(
		ctx context.Context,
		req *PerformLeaveRequest,
		res *PerformLeaveResponse,
	) error

	// Query the latest events and state for a room from the room server.
	QueryLatestEventsAndState(
		ctx context.Context,
		request *QueryLatestEventsAndStateRequest,
		response *QueryLatestEventsAndStateResponse,
	) error

	// Query the state after a list of events in a room from the room server.
	QueryStateAfterEvents(
		ctx context.Context,
		request *QueryStateAfterEventsRequest,
		response *QueryStateAfterEventsResponse,
	) error

	// Query a list of events by event ID.
	QueryEventsByID(
		ctx context.Context,
		request *QueryEventsByIDRequest,
		response *QueryEventsByIDResponse,
	) error

	// Query the membership event for an user for a room.
	QueryMembershipForUser(
		ctx context.Context,
		request *QueryMembershipForUserRequest,
		response *QueryMembershipForUserResponse,
	) error

	// Query a list of membership events for a room
	QueryMembershipsForRoom(
		ctx context.Context,
		request *QueryMembershipsForRoomRequest,
		response *QueryMembershipsForRoomResponse,
	) error

	// Query whether a server is allowed to see an event
	QueryServerAllowedToSeeEvent(
		ctx context.Context,
		request *QueryServerAllowedToSeeEventRequest,
		response *QueryServerAllowedToSeeEventResponse,
	) error

	// Query missing events for a room from roomserver
	QueryMissingEvents(
		ctx context.Context,
		request *QueryMissingEventsRequest,
		response *QueryMissingEventsResponse,
	) error

	// Query to get state and auth chain for a (potentially hypothetical) event.
	// Takes lists of PrevEventIDs and AuthEventsIDs and uses them to calculate
	// the state and auth chain to return.
	QueryStateAndAuthChain(
		ctx context.Context,
		request *QueryStateAndAuthChainRequest,
		response *QueryStateAndAuthChainResponse,
	) error

	// Query a given amount (or less) of events prior to a given set of events.
	PerformBackfill(
		ctx context.Context,
		request *PerformBackfillRequest,
		response *PerformBackfillResponse,
	) error

	// Asks for the default room version as preferred by the server.
	QueryRoomVersionCapabilities(
		ctx context.Context,
		request *QueryRoomVersionCapabilitiesRequest,
		response *QueryRoomVersionCapabilitiesResponse,
	) error

	// Asks for the room version for a given room.
	QueryRoomVersionForRoom(
		ctx context.Context,
		request *QueryRoomVersionForRoomRequest,
		response *QueryRoomVersionForRoomResponse,
	) error

	// Set a room alias
	SetRoomAlias(
		ctx context.Context,
		req *SetRoomAliasRequest,
		response *SetRoomAliasResponse,
	) error

	// Get the room ID for an alias
	GetRoomIDForAlias(
		ctx context.Context,
		req *GetRoomIDForAliasRequest,
		response *GetRoomIDForAliasResponse,
	) error

	// Get all known aliases for a room ID
	GetAliasesForRoomID(
		ctx context.Context,
		req *GetAliasesForRoomIDRequest,
		response *GetAliasesForRoomIDResponse,
	) error

	// Get the user ID of the creator of an alias
	GetCreatorIDForAlias(
		ctx context.Context,
		req *GetCreatorIDForAliasRequest,
		response *GetCreatorIDForAliasResponse,
	) error

	// Remove a room alias
	RemoveRoomAlias(
		ctx context.Context,
		req *RemoveRoomAliasRequest,
		response *RemoveRoomAliasResponse,
	) error
}