126 lines
3.8 KiB
Lua
126 lines
3.8 KiB
Lua
-- Chest backend
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-- Currently just the one for Dragon. Will not actually work yet.
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local w = require "lib"
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local d = require "luadash"
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local conf = w.load_config({
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"buffer_internal",
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"buffer_external"
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})
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local BUFFER_OUT_SLOT = 1
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local BUFFER_IN_SLOT = 2
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-- Find all chests or shulker boxes
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local inventories = d.map_with_key(w.find_peripherals(function(type, name, wrapped)
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return string.find(name, "chest") or string.find(name, "shulker")
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end), function(_, p) return p.name, p.wrapped end)
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local display_name_cache = {}
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-- Gets the display name of the given item (in the given chest peripheral & slot)
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-- If its name is not cached, cache it.
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-- If it is, just return the cached name
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local function cache(item, chest, slot)
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local idx = w.get_internal_identifier(item)
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if display_name_cache[idx] then
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return display_name_cache[idx]
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else
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local n = chest.getItemMeta(slot).displayName
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display_name_cache[idx] = n
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return n
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end
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end
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local index = {}
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-- Update the index for the given peripheral
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local function update_index_for(name)
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local inv = inventories[name]
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local data = inv.list()
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for slot, item in pairs(data) do
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data[slot].display_name = cache(item, inv, slot)
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end
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index[name] = data
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end
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-- Reindex all connected inventories
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local function update_index()
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print "Indexing started."
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for n in pairs(inventories) do
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update_index_for(n)
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sleep()
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end
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print "Indexing complete."
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end
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-- Finds all items matching a certain predicate.
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-- Returns a table of tables of { name, slot, item }
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local function find(predicate)
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local ret = {}
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for inventory, items in pairs(index) do
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for slot, item in pairs(items) do
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local ok, extra = predicate(item) -- allow predicates to return some extra data which will come out in resulting results
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if ok then
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table.insert(ret, { location = { inventory = inventory, slot = slot }, item = item, extra = extra })
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end
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end
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end
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return ret
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end
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-- Finds space in the chest system. Returns the name of an inventory which has space.
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local function find_space()
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for name, items in pairs(index) do
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if #items < inventories[name].size() then
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return name
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end
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end
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end
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local function find_by_ID_meta(id, meta)
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return find(function(item)
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return
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(not meta or item.damage == meta) and -- if metadata provided, ensure match
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(not id or item.name == id) -- if internal name provided, ensure match
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end)
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end
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local function search(query, threshold)
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local threshold = threshold or 4
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local results = find(function(item)
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local distance = d.distance(query, item.display_name)
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if distance < threshold then
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return true, distance
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else return false end
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end)
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return d.sort_by(results, function(x) return x.extra end) -- sort returned results by closeness to query
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end
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local function fetch_by_location(loc, limit)
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local peripheral_name, slot, limit = loc.inventory, loc.slot, limit or 64
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return peripheral.call(conf.buffer_internal, "pullItems", peripheral_name, slot, limit, BUFFER_OUT_SLOT)
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end
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local function server(command)
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if command.type == "buffers" then -- Sends the external address of the buffer
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return conf.buffer_external
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elseif command.type == "reindex" then
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os.queueEvent "reindex"
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elseif command.type == "extract" then
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local result = find_by_ID_meta(command.ID, command.meta)
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end
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end
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local function indexer_thread()
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while true do
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update_index()
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os.pullEvent "reindex"
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end
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end
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w.init()
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parallel.waitForAll(function() w.serve(server, "storage") end, indexer_thread) |