minetest/builtin/mainmenu/content/update_detector.lua

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--Minetest
--Copyright (C) 2023 rubenwardy
--
--This program is free software; you can redistribute it and/or modify
--it under the terms of the GNU Lesser General Public License as published by
--the Free Software Foundation; either version 2.1 of the License, or
--(at your option) any later version.
--
--This program is distributed in the hope that it will be useful,
--but WITHOUT ANY WARRANTY; without even the implied warranty of
--MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
--GNU Lesser General Public License for more details.
--
--You should have received a copy of the GNU Lesser General Public License along
--with this program; if not, write to the Free Software Foundation, Inc.,
--51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
update_detector = {}
if not core.get_http_api then
update_detector.get_all = function() return {} end
update_detector.get_count = function() return 0 end
return
end
local has_fetched = false
local latest_releases
do
local tmp = core.get_once("cdb_latest_releases")
if tmp then
latest_releases = core.deserialize(tmp, true)
has_fetched = latest_releases ~= nil
end
end
local function fetch_latest_releases()
local version = core.get_version()
local base_url = core.settings:get("contentdb_url")
local url = base_url ..
"/api/updates/?type=mod&type=game&type=txp&protocol_version=" ..
core.get_max_supp_proto() .. "&engine_version=" .. core.urlencode(version.string)
local http = core.get_http_api()
local response = http.fetch_sync({ url = url })
if not response.succeeded then
return
end
return core.parse_json(response.data)
end
--- Get a table from package key (author/name) to latest release id
---
--- @param callback function that takes a single argument, table or nil
local function get_latest_releases(callback)
core.handle_async(fetch_latest_releases, nil, callback)
end
local function has_packages_from_cdb()
pkgmgr.refresh_globals()
pkgmgr.update_gamelist()
for _, content in pairs(pkgmgr.get_all()) do
if pkgmgr.get_contentdb_id(content) then
return true
end
end
return false
end
--- @returns a new table with all keys lowercase
local function lowercase_keys(tab)
local ret = {}
for key, value in pairs(tab) do
ret[key:lower()] = value
end
return ret
end
local function fetch()
if has_fetched or not has_packages_from_cdb() then
return
end
has_fetched = true
get_latest_releases(function(releases)
if not releases then
has_fetched = false
return
end
latest_releases = lowercase_keys(releases)
core.set_once("cdb_latest_releases", core.serialize(latest_releases))
if update_detector.get_count() > 0 then
local maintab = ui.find_by_name("maintab")
if not maintab.hidden then
ui.update()
end
end
end)
end
--- @returns a list of content with an update available
function update_detector.get_all()
if latest_releases == nil then
fetch()
return {}
end
pkgmgr.refresh_globals()
pkgmgr.update_gamelist()
local ret = {}
local all_content = pkgmgr.get_all()
for _, content in ipairs(all_content) do
local cdb_id = pkgmgr.get_contentdb_id(content)
if cdb_id then
-- The backend will account for aliases in `latest_releases`
local latest_release = latest_releases[cdb_id]
if not latest_release and content.type == "game" then
latest_release = latest_releases[cdb_id .. "_game"]
end
if latest_release and latest_release > content.release then
ret[#ret + 1] = content
end
end
end
return ret
end
--- @return number of packages with updates available
function update_detector.get_count()
return #update_detector.get_all()
end