-- Storage Interface API Description

--

-- This is written as a TypedLua description

-- Key-Value stores (the default)

interface keyval_store

	get : ( self, string? ) -> (any) | (nil, string)

	set : ( self, string?, any ) -> (boolean) | (nil, string)

end

-- Map stores (key-key-value stores)

interface map_store

	get : ( self, string?, any ) -> (any) | (nil, string)

	set : ( self, string?, any, any ) -> (boolean) | (nil, string)

	set_keys : ( self, string?, { any : any }) -> (boolean) | (nil, string)

	remove : {}

end

-- Archive stores

typealias archive_query = {

	"start"  : number?, -- timestamp

	"end"    : number?, -- timestamp

	"with"   : string?,

	"after"  : string?, -- archive id

	"before" : string?, -- archive id

	"total"  : boolean?,

}

interface archive_store

	-- Optional set of capabilities

	caps   : {

		-- Optional total count of matching items returned as second return value from :find()

		"total" : boolean?,

	}?

	-- Add to the archive

	append : ( self, string?, string?, any, number?, string? ) -> (string) | (nil, string)

	-- Iterate over archive

	find   : ( self, string?, archive_query? ) -> ( () -> ( string, any, number?, string? ), integer? )

	-- Removal of items. API like find. Optional?

	delete : ( self, string?, archive_query? ) -> (boolean) | (number) | (nil, string)

	-- Array of dates which do have messages (Optional?)

	dates  : ( self, string? ) -> ({ string }) | (nil, string)

end

-- This represents moduleapi

interface module

	-- If the first string is omitted then the name of the module is used

	-- The second string is one of "keyval" (default), "map" or "archive"

	open_store : (self, string?, string?) -> (keyval_store) | (map_store) | (archive_store) | (nil, string)

	-- Other module methods omitted

end

module : module