feat: add disk-monitor plugin

disk-monitor/README.md

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+# Disk Monitor
+
+A bar widget and panel that monitors all connected disks and displays free space. The bar shows disk space at a glance, while the detailed panel provides usage bars, SSD detection, and disk selection.
+
+## Plugin
+
+| Field | Value |
+| --- | --- |
+| ID | `rael2pac/disk-monitor` |
+| Entries | Bar widget: `bar`; panel: `panel`; service: `disk-poller` |
+
+## Usage
+
+The bar widget shows free space for each disk. Click it to open the panel with detailed usage information including capacity bars, mount points, and SSD/HDD detection.
+
+```sh
+noctalia msg panel-toggle rael2pac/disk-monitor:panel
+```
+
+## Settings
+
+| Setting | Type | Default | Description |
+| --- | --- | --- | --- |
+| `refreshInterval` | `int` | `30` | Seconds between disk usage polls (min 10, max 300). |
+| `displayFormat` | `string` | `name_free` | Bar display format: `name_free`, `percent`, or `size`. |
+| `hideOnEmpty` | `bool` | `false` | Hide the bar widget when no disks are detected. |
+
+## Notes
+
+- Uses `lsblk` to detect all block devices and `df` for filesystem usage.
+- Automatically detects SSD vs HDD using the `ROTA` flag.
+- Supports ext4, btrfs, xfs, ntfs, and vfat filesystems.

disk-monitor/panel.luau

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+-- panel.luau -- Monitor de Discos: painel com seletor e config
+
+local disks = {}
+local panelOpen = false
+
+local function tr(key, fallback)
+    local v = noctalia.tr(key)
+    if v == nil or v == key then return fallback or key end
+    return v
+end
+
+local function parseBytes(str)
+    if not str or str == "?" then return 0 end
+    local num, unit = str:match("^([%d%.]+)(.+)$")
+    if not num then return 0 end
+    num = tonumber(num)
+    if not num then return 0 end
+    unit = unit:upper()
+    if unit == "T" or unit == "TB" then return num * 1024 * 1024 * 1024 * 1024
+    elseif unit == "G" or unit == "GB" then return num * 1024 * 1024 * 1024
+    elseif unit == "M" or unit == "MB" then return num * 1024 * 1024
+    elseif unit == "K" or unit == "KB" then return num * 1024
+    else return num end
+end
+
+local function getPercentUsed(disk)
+    if disk.percent then
+        return tonumber(disk.percent:match("(%d+)")) or 0
+    end
+    local totalBytes = parseBytes(disk.size)
+    local usedBytes = parseBytes(disk.used)
+    if totalBytes == 0 then return 0 end
+    return math.floor((usedBytes / totalBytes) * 100)
+end
+
+local function getPercentColor(pct)
+    if pct >= 80 then return "#ef4444"
+    elseif pct >= 60 then return "#facc15"
+    else return "#22c55e" end
+end
+
+local function getBarWidth(pct)
+    local filled = math.floor(pct / 5)
+    if filled > 20 then filled = 20 end
+    if filled < 0 then filled = 0 end
+    local empty = 20 - filled
+    return string.rep("█", filled) .. string.rep("░", empty)
+end
+
+local function getDiskIcon(disk)
+    if disk.removable then
+        local name = (disk.devName or ""):lower()
+        if name:match("sd") and not name:match("nvme") then
+            return "device-sd-card"
+        end
+        return "device-usb"
+    end
+    return "database"
+end
+
+local function stripSlash(mp)
+    if not mp then return "?" end
+    if mp == "/" then return "/" end
+    return mp:gsub("^/", "")
+end
+
+local function formatSize(disk)
+    local used = parseBytes(disk.used)
+    local total = parseBytes(disk.size)
+    if total == 0 then return (disk.used or "?") .. " / " .. (disk.size or "?") end
+    local usedGB = used / (1024 * 1024 * 1024)
+    local totalGB = total / (1024 * 1024 * 1024)
+    if totalGB >= 1 then
+        return string.format("%.1f / %.1f GB", usedGB, totalGB)
+    else
+        return (disk.used or "?") .. " / " .. (disk.size or "?")
+    end
+end
+
+function onSelect1() setDisk(1) end
+function onSelect2() setDisk(2) end
+function onSelect3() setDisk(3) end
+function onSelect4() setDisk(4) end
+function onSelect5() setDisk(5) end
+function onSelect6() setDisk(6) end
+function onSelect7() setDisk(7) end
+function onSelect8() setDisk(8) end
+
+function setDisk(idx)
+    local d = disks[idx]
+    if not d then return end
+    noctalia.state.set("selectedDisk", d.mountpoint)
+    render()
+end
+
+function onCycleFormat()
+    local formats = { "name_free", "free_only", "percent", "name_percent" }
+    local current = noctalia.state.get("displayFormat") or noctalia.getConfig("displayFormat") or "name_free"
+    local nextIdx = 1
+    for i, f in ipairs(formats) do
+        if f == current then
+            nextIdx = (i % #formats) + 1
+            break
+        end
+    end
+    noctalia.state.set("displayFormat", formats[nextIdx])
+    render()
+end
+
+function render()
+    local body = {}
+    local currentDisplay = noctalia.state.get("selectedDisk") or "/"
+
+    if #disks == 0 then
+        table.insert(body, ui.column({ align = "center", justify = "center", flexGrow = 1, padding = 30 }, {
+            ui.glyph({ name = "database", size = 28, color = "secondary" }),
+            ui.label({ text = tr("panel.noDisks", "Nenhum disco detectado"), fontSize = 14, color = "on_surface/0.6" }),
+        }))
+    else
+        for i, d in ipairs(disks) do
+            local pct = getPercentUsed(d)
+            local color = getPercentColor(pct)
+            local bar = getBarWidth(pct)
+            local icon = getDiskIcon(d)
+            local label = stripSlash(d.mountpoint)
+            local isSelected = (d.mountpoint == currentDisplay)
+            local variant = isSelected and "default" or "outline"
+
+            local tagLabel = ""
+            if d.ssd then tagLabel = "SSD" end
+            if d.removable then
+                if tagLabel ~= "" then tagLabel = tagLabel .. " " end
+                tagLabel = tagLabel .. "USB"
+            end
+
+            local modelStr = ""
+            if d.model and d.model ~= "" then
+                modelStr = d.model
+            end
+
+            local cb = "onSelect" .. i
+
+            table.insert(body, ui.column({ gap = 3, paddingH = 8, paddingV = 6, fill = "surface_variant", radius = 8 }, {
+                ui.row({ gap = 8, align = "center" }, {
+                    ui.button({ glyph = icon, variant = variant, controlSize = "sm", onClick = cb }),
+                    ui.column({ gap = 1, flexGrow = 1 }, {
+                        ui.row({ gap = 6, align = "center" }, {
+                            ui.label({ text = label, fontSize = 14, fontWeight = "bold", color = "on_surface" }),
+                            ui.label({ text = tagLabel, fontSize = 11, color = color }),
+                        }),
+                        ui.label({ text = modelStr, fontSize = 10, color = "on_surface/0.5" }),
+                    }),
+                    ui.label({ text = tostring(pct) .. "%", fontSize = 14, fontWeight = "bold", color = color }),
+                }),
+                ui.row({ gap = 6, align = "center" }, {
+                    ui.label({ text = bar, fontFamily = "monospace", fontSize = 11, color = color }),
+                    ui.label({ text = formatSize(d), fontSize = 11, color = "on_surface/0.7" }),
+                }),
+                ui.row({ gap = 4, align = "center" }, {
+                    ui.label({ text = d.devName, fontSize = 10, color = "on_surface/0.4" }),
+                    ui.label({ text = (d.fstype or "?"), fontSize = 10, color = "on_surface/0.4" }),
+                }),
+            }))
+        end
+    end
+
+    local currentFormat = noctalia.state.get("displayFormat") or noctalia.getConfig("displayFormat") or "name_free"
+    local hideOnEmpty = noctalia.getConfig("hideOnEmpty")
+    if hideOnEmpty == nil then hideOnEmpty = false end
+    local refreshInterval = noctalia.getConfig("refreshInterval") or 30
+
+    local formatLabel = "Espaco Livre"
+    if currentFormat == "free_only" then formatLabel = "Apenas Livre"
+    elseif currentFormat == "percent" then formatLabel = "Percentual"
+    elseif currentFormat == "name_percent" then formatLabel = "Livre + Percentual"
+    end
+
+    table.insert(body, ui.column({ gap = 6, paddingH = 8, paddingV = 8, fill = "surface_variant", radius = 8 }, {
+        ui.label({ text = tr("panel.config", "Configuracoes"), fontSize = 13, fontWeight = "bold", color = "primary" }),
+        ui.row({ gap = 8, align = "center" }, {
+            ui.label({ text = tr("panel.format", "Formato na barra:"), fontSize = 11, color = "on_surface/0.7", flexGrow = 1 }),
+            ui.button({ text = formatLabel, glyph = "adjustments", variant = "outline", controlSize = "sm", onClick = "onCycleFormat" }),
+        }),
+        ui.row({ gap = 8, align = "center" }, {
+            ui.label({ text = tr("panel.interval", "Atualizar a cada:"), fontSize = 11, color = "on_surface/0.7", flexGrow = 1 }),
+            ui.label({ text = tostring(refreshInterval) .. "s", fontSize = 11, fontWeight = "bold", color = "on_surface" }),
+        }),
+        ui.row({ gap = 8, align = "center" }, {
+            ui.label({ text = tr("panel.hideEmpty", "Ocultar vazio:"), fontSize = 11, color = "on_surface/0.7", flexGrow = 1 }),
+            ui.label({ text = hideOnEmpty and "Sim" or "Nao", fontSize = 11, fontWeight = "bold", color = "on_surface" }),
+        }),
+    }))
+
+    panel.render(ui.column({ flexGrow = 1, gap = 6, padding = 12, fill = "surface", radius = 12 }, {
+        ui.row({ gap = 10, align = "center" }, {
+            ui.glyph({ name = "settings", size = 18, color = "primary" }),
+            ui.label({ text = tr("panel.title", "Monitor de Discos"), fontSize = 16, fontWeight = "bold", color = "on_surface", flexGrow = 1 }),
+            ui.button({ glyph = "x", variant = "ghost", controlSize = "sm", onClick = "onCloseClicked" }),
+        }),
+
+        ui.scroll({ flexGrow = 1, gap = 6 }, body),
+    }))
+end
+
+function onOpen(_context)
+    panelOpen = true
+    local raw = noctalia.state.get("disks")
+    if raw and raw ~= "" then
+        local d = noctalia.json.decode(raw)
+        if d then disks = d else disks = {} end
+    else
+        disks = {}
+    end
+    render()
+end
+
+function onClose()
+    panelOpen = false
+    disks = {}
+end
+
+function onCloseClicked()
+    panel.close()
+end
+
+noctalia.state.watch("disks", function(value)
+    if value and value ~= "" then
+        local d = noctalia.json.decode(value)
+        if d then disks = d else disks = {} end
+    else
+        disks = {}
+    end
+    if panelOpen then render() end
+end)

disk-monitor/plugin.toml

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+id           = "rael2pac/disk-monitor"
+name         = "Disk Monitor"
+version      = "1.0.0"
+plugin_api   = 3
+author       = "rael2pac"
+license      = "MIT"
+icon         = "database"
+description  = "Monitor disk usage with free space on the bar and detailed panel"
+tags         = ["bar", "panel", "system", "hardware", "utility"]
+
+[[service]]
+id    = "disk-poller"
+entry = "service.luau"
+
+[[widget]]
+id    = "bar"
+entry = "widget.luau"
+
+  [[widget.setting]]
+  key         = "displayFormat"
+  type        = "string"
+  label_key   = "settings.displayFormat.label"
+  description_key = "settings.displayFormat.description"
+  default     = "name_free"
+
+  [[widget.setting]]
+  key         = "hideOnEmpty"
+  type        = "bool"
+  label_key   = "settings.hideOnEmpty.label"
+  description_key = "settings.hideOnEmpty.description"
+  default     = false
+
+[[panel]]
+id          = "panel"
+entry       = "panel.luau"
+width       = 500
+height      = 350
+placement   = "attached"
+open_near_click = false
+
+[[setting]]
+key         = "refreshInterval"
+type        = "int"
+label_key   = "settings.refreshInterval.label"
+description_key = "settings.refreshInterval.description"
+default     = 30
+min         = 10
+max         = 300