Add monitor dashboard functionality to inventory manager

inventoryManager.lua

@@ -4,6 +4,179 @@
 local DROPPER_NAME  = "minecraft:dropper_9"
 local BARREL_NAME   = "minecraft:barrel_0"
 local POLL_INTERVAL = 2    -- seconds between barrel checks
+local MONITOR_SIDE  = "left"
+local DASH_REFRESH  = 3    -- seconds between dashboard refreshes
+
+-------------------------------------------------
+-- Monitor Dashboard
+-------------------------------------------------
+
+local mon = nil
+
+local function setupMonitor()
+    mon = peripheral.wrap(MONITOR_SIDE)
+    if not mon then return false end
+    mon.setTextScale(0.5)
+    mon.clear()
+    return true
+end
+
+-- Helpers
+local function monWrite(x, y, text, fg, bg)
+    mon.setCursorPos(x, y)
+    if fg then mon.setTextColor(fg) end
+    if bg then mon.setBackgroundColor(bg) end
+    mon.write(text)
+end
+
+local function monFill(y, color)
+    local w, _ = mon.getSize()
+    mon.setCursorPos(1, y)
+    mon.setBackgroundColor(color)
+    mon.write(string.rep(" ", w))
+end
+
+local function monCenter(y, text, fg, bg)
+    local w, _ = mon.getSize()
+    local x = math.floor((w - #text) / 2) + 1
+    monWrite(x, y, text, fg, bg)
+end
+
+local function monBar(x, y, width, ratio, barColor, bgColor)
+    local filled = math.floor(ratio * width)
+    mon.setCursorPos(x, y)
+    mon.setBackgroundColor(barColor)
+    mon.write(string.rep(" ", filled))
+    mon.setBackgroundColor(bgColor)
+    mon.write(string.rep(" ", width - filled))
+end
+
+-- Draw the full dashboard
+local function drawDashboard()
+    if not mon then return end
+
+    local w, h = mon.getSize()
+
+    -- Clear
+    mon.setBackgroundColor(colors.black)
+    mon.clear()
+
+    -- ===== Title bar =====
+    monFill(1, colors.blue)
+    monCenter(1, " ** INVENTORY MANAGER ** ", colors.white, colors.blue)
+
+    -- ===== Status bar =====
+    monFill(2, colors.gray)
+    local chests = getChests()
+    local dropperOk = peripheral.wrap(DROPPER_NAME) ~= nil
+    local barrelOk  = peripheral.wrap(BARREL_NAME) ~= nil
+
+    local statusParts = {}
+    table.insert(statusParts, string.format(" Chests: %d", #chests))
+    table.insert(statusParts, dropperOk and "Dropper: OK" or "Dropper: --")
+    table.insert(statusParts, barrelOk  and "Barrel: OK"  or "Barrel: --")
+    local statusLine = table.concat(statusParts, "  |  ")
+
+    monWrite(2, 2, statusLine, colors.white, colors.gray)
+
+    -- Dropper/Barrel status indicators
+    local indicatorX = w - 10
+    if indicatorX > #statusLine + 3 then
+        monWrite(indicatorX, 2, dropperOk and " \7 " or " x ", dropperOk and colors.lime or colors.red, colors.gray)
+        monWrite(indicatorX + 4, 2, barrelOk and " \7 " or " x ", barrelOk and colors.lime or colors.red, colors.gray)
+    end
+
+    -- ===== Divider =====
+    monFill(3, colors.lightBlue)
+    monCenter(3, string.rep("\140", math.min(w - 4, 60)), colors.cyan, colors.lightBlue)
+
+    -- ===== Item catalogue =====
+    local catalogue = buildCatalogue()
+
+    -- Collect and sort items
+    local itemList = {}
+    local grandTotal = 0
+    for itemName, sources in pairs(catalogue) do
+        local total = 0
+        for _, s in ipairs(sources) do total = total + s.total end
+        grandTotal = grandTotal + total
+        table.insert(itemList, { name = itemName, total = total, sources = #sources })
+    end
+    table.sort(itemList, function(a, b) return a.total > b.total end)
+
+    -- Header row
+    local row = 5
+    monFill(row, colors.gray)
+    monWrite(2, row, "#",     colors.lightGray, colors.gray)
+    monWrite(5, row, "Item",  colors.lightGray, colors.gray)
+    monWrite(w - 22, row, "Qty",     colors.lightGray, colors.gray)
+    monWrite(w - 14, row, "Stock",   colors.lightGray, colors.gray)
+    row = row + 1
+
+    -- Find max for bar scaling
+    local maxCount = 0
+    for _, item in ipairs(itemList) do
+        if item.total > maxCount then maxCount = item.total end
+    end
+    if maxCount == 0 then maxCount = 1 end
+
+    -- Item rows
+    local maxRows = h - row - 3  -- leave space for footer
+    for i, item in ipairs(itemList) do
+        if i > maxRows then break end
+
+        local y = row
+        local short = item.name:gsub("^minecraft:", ""):gsub("_", " ")
+        -- Capitalize first letter
+        short = short:sub(1,1):upper() .. short:sub(2)
+
+        -- Truncate if too long
+        local maxNameLen = w - 30
+        if #short > maxNameLen then
+            short = short:sub(1, maxNameLen - 2) .. ".."
+        end
+
+        -- Alternating row background
+        local rowBg = (i % 2 == 0) and colors.gray or colors.black
+
+        monFill(y, rowBg)
+
+        -- Index number
+        monWrite(2, y, string.format("%2d", i), colors.lightBlue, rowBg)
+
+        -- Item name
+        monWrite(5, y, short, colors.white, rowBg)
+
+        -- Quantity
+        local qtyStr = tostring(item.total)
+        monWrite(w - 22, y, qtyStr, colors.yellow, rowBg)
+
+        -- Stock bar
+        local ratio = item.total / maxCount
+        local barColor = colors.lime
+        if ratio < 0.25 then barColor = colors.red
+        elseif ratio < 0.5 then barColor = colors.orange
+        end
+        monBar(w - 14, y, 12, ratio, barColor, rowBg == colors.gray and colors.lightGray or colors.gray)
+
+        row = row + 1
+    end
+
+    -- ===== Footer =====
+    local footerY = h - 1
+    monFill(footerY, colors.gray)
+    monWrite(2, footerY,
+        string.format(" Total: %d items across %d types ", grandTotal, #itemList),
+        colors.white, colors.gray)
+
+    -- Timestamp
+    local timeStr = textutils.formatTime(os.time(), true)
+    monWrite(w - #timeStr - 1, footerY, timeStr, colors.lightGray, colors.gray)
+
+    -- Bottom accent
+    monFill(h, colors.blue)
+    monCenter(h, " \4 Auto-Sort Active \4 ", colors.lightBlue, colors.blue)
+end
 
 -------------------------------------------------
 -- Inventory helpers
@@ -194,9 +367,16 @@ local function main()
         print("[WARN] Barrel not found: " .. BARREL_NAME)
     end
 
+    -- Setup monitor
+    if setupMonitor() then
+        print("[OK]   Monitor found on: " .. MONITOR_SIDE)
+    else
+        print("[WARN] No monitor on " .. MONITOR_SIDE .. ". Dashboard disabled.")
+    end
+
     print("")
 
-    -- Run barrel watcher and command prompt in parallel
+    -- Run barrel watcher, dashboard, and command prompt in parallel
     parallel.waitForAny(
         -- Task 1: Watch barrel for new items
         function()
@@ -206,7 +386,15 @@ local function main()
             end
         end,
 
-        -- Task 2: Interactive command prompt
+        -- Task 2: Dashboard refresh
+        function()
+            while true do
+                pcall(drawDashboard)
+                sleep(DASH_REFRESH)
+            end
+        end,
+
+        -- Task 3: Interactive command prompt
         function()
             while true do
                 local items = showCatalogue()