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-- Copyright 2025 David Vazgenovich Shakaryan
local state = {}
local mt = {}
mt.__index = mt
function state.new()
return setmetatable({
menus = {},
depth = 0,
favourites = {},
playing_id = nil,
}, mt)
end
function mt:menu()
return self.menus[self.depth]
end
function mt:push_menu(t)
local menu = {
options = {},
cursor = 1,
view_top = 1,
}
for k, v in pairs(t) do
menu[k] = v
end
self.depth = self.depth + 1
self.menus[self.depth] = menu
end
-- returns index if found
function mt:favourited(id)
for i, v in ipairs(self.favourites) do
if v == id then
return i
end
end
end
function mt:add_favourite(id)
self.favourites[#self.favourites+1] = id
end
function mt:remove_favourite_at(i)
table.remove(self.favourites, i)
end
-- inserts the given id into the favourites array before the next favourited
-- menu option, starting from the next cursor position, or the end if no such
-- option is found. this is meant for in-place favouriting from the favourites
-- menu.
function mt:insert_favourite_before_next_in_menu(id)
local menu = self:menu()
for i = menu.cursor+1, #menu.options do
local ind = self:favourited(menu.options[i].id)
if ind then
table.insert(self.favourites, ind, id)
return
end
end
self:add_favourite(id)
end
return state
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