# MIT License
#
# Copyright (c) 2020-2020 Macaroni Studios AB
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

class_name GotmLobbyFetch
#warnings-disable

# Used for fetching non-hidden and non-locked lobbies.



##############################################################
# PROPERTIES
##############################################################
################
# Filter options
################
# If not empty, fetch lobbies whose 'Lobby.name' contains 'name'.
var filter_name: String = ""

# If not empty, fetch lobbies whose filterable custom properties
# matches those in 'filter_properties'.
#
# For example, setting 'filter_properties.difficulty = 2' will
# only fetch lobbies that have been set up with both 'lobby.set_property("difficulty", 2)'
# and 'lobby.set_filterable("difficulty", true)'.
#
# If your lobby has multiple filterable props, you must provide every filterable
# prop in 'filter_properties'. Setting a prop's value to 'null' will match any
# value of that prop.
var filter_properties: Dictionary = {}


################
# Sort options
################
# If not empty, sort by a sortable custom property.
#
# For example, setting 'sort_property = "difficulty"' will 
# only fetch lobbies that have been set up with both 'lobby.set_property("difficulty", some_value)'
# and 'lobby.set_sortable("difficulty", true)'.
#
# If your lobby has a sortable prop, you must always provide a 'sort_property'.
var sort_property: String = ""

# Sort results in ascending order?
var sort_ascending: bool = false

# If not null, fetch lobbies whose sort property's value is equal to or greater than 'sort_min'.
var sort_min = null

# If not null, fetch lobbies whose sort property's value is equal to or lesser than 'sort_max'.
var sort_max = null

# If true, and 'sort_min' is provided, exclude lobbies whose sort property's value is equal to 'sort_min'.
var sort_min_exclusive = false

# If true, and 'sort_max' is provided, exclude lobbies whose sort property's value is equal to 'sort_max'.
var sort_max_exclusive = false



##############################################################
# METHODS
##############################################################
# All these methods asynchronously fetch up to 8 non-hidden
# and non-locked lobbies.
#
# Modifying any filtering or sorting option resets the state of this
# 'GotmLobbyFetch' instance and causes the next fetch call to 
# fetch the first lobbies.
#
# All calls asynchronously return an array of fetched lobbies.
# Use 'yield(fetch.next(), "completed")' to retrieve it.


# Fetch the next lobbies, starting after the last lobby fetched
# in the previous call.
func next(count: int = 8) -> Array:
	return yield(_GotmImpl._fetch_lobbies(self, count, "next"), "completed")


# Fetch the previous lobbies, ending before the first lobby
# that was fetched in the previous call.
func previous(count: int = 8) -> Array:
	return yield(_GotmImpl._fetch_lobbies(self, count, "previous"), "completed")


# Fetch the first lobbies.
func first(count: int = 8) -> Array:
	return yield(_GotmImpl._fetch_lobbies(self, count, "first"), "completed")


# Fetch lobbies at the current position.
# Useful for refreshing lobbies without changing the page.
func current(count: int = 8) -> Array:
	return yield(_GotmImpl._fetch_lobbies(self, count, "current"), "completed")



##############################################################
# PRIVATE
##############################################################
var _impl: Dictionary = {}