function tr(key)
    return noctalia.tr(key)
end

function barCfg(key)
    return barWidget.getConfig(key)
end

function cfg(key)
    return noctalia.getConfig(key)
end

function getState(key)
    return noctalia.state.get(key)
end

function setState(key, val)
    noctalia.state.set(key, val)
end

function watchState(key, cb)
    noctalia.state.watch(key, cb)
end

local function labelBox(subtext, text, glyph)
    return ui.column({
        fill = "surface/0.7",
        flexGrow = 1,
        height = 100,
        radius = 8,
        align = "center",
        padding = 12,
        justify = "space_between"
    }, {
        ui.glyph({
            name = glyph,
            size = 30
        }),
        ui.label({
            text = text,
            fontWeight = "bold"
        }),
        ui.label({
            text = subtext,
            fontSize = 12,
            fontWeight = "medium"
        }),
    })
end

function statLabel(text, glyph: string?)
    local items = {}
    if glyph ~= nil then
        table.insert(items, ui.glyph({
            name = glyph,
            size = 20
        }))
    end

    table.insert(items, ui.label({
        text = text,
        fontSize = 12,
        fontWeight = "semibold"
    }))

    return ui.row({
        gap = 8,
        align = "center"
    }, items)
end

local function render()
    local firstBtn = btnCheck

    if getState("isRunning") then
        firstBtn = ui.button({
            text = tr("panel.cancel"),
            glyph = "cancel",
            flexGrow = 1,
            variant = "destructive",
            onClick = "onCancelClicked",
        })
    else
        if getState("isUpdateAvailable") then
            firstBtn = ui.button({
                text = tr("panel.update"),
                glyph = "progress-down",
                flexGrow = 1,
                variant = "primary",
                onClick = "onUpdateClicked",
            })
        else
            firstBtn = ui.button({
                text = tr("panel.check"),
                glyph = "search",
                flexGrow = 1,
                variant = "outline",
                onClick = "onCheckClicked",
            })
        end
    end

    local lastCheckTimeStr = getState("lastCheckTimeStr")
    local generationItems = {
        statLabel(`SYS: {getState("nixosGenerations")}`, "device-desktop"),
        statLabel(`{tr("panel.current")}: {getState("nixosCurrentGen")}`, "device-desktop-check")
    }

    if getState("hasHomeManager") then
        table.insert(generationItems,
            statLabel(`HM: {getState("hmGenerations")}`, "home")
        )

        table.insert(generationItems,
            statLabel(`{tr("panel.current")}: {getState("hmCurrentGen")}`, "home-check")
        )
    end

    panel.render(
        ui.column({
            gap = 8,
        }, {
            ui.row({
                justify = "space_between",
                align = "center"
            }, {
                ui.label({
                    text = tr("panel.title"),
                    fontSize = 20,
                }),

                ui.label({
                    text = cfg("branch"),
                    fontSize = 14,
                }),
            }),
            ui.separator({
                thickness = 2,
                orientation = "horizontal",
                spacing = 4
            }),
            ui.row({
                gap = 8,
                align = "center",
                justify = "space_between"
            }, {
                labelBox(tr("panel.local"), getState("localHash"), "devices-pc"),
                labelBox(tr("panel.remote"), getState("remoteHash"), "world"),
            }),
            ui.separator({
                thickness = 2,
                orientation = "horizontal",
                spacing = 4
            }),
            ui.row({
                fill = "surface/0.7",
                align = "center",
                justify = "space_between",
                flexGrow = 1,
                paddingV = 4,
                paddingH = 8,
                radius = 8,
            }, generationItems),
            ui.row({
                fill = "surface/0.7",
                align = "center",
                justify = "center",
                flexGrow = 1,
                paddingV = 4,
                paddingH = 8,
                radius = 8,
            }, {
                statLabel(`{tr("panel.store_size")}: {getState("storeSize")}`, "database"),
                ui.spacer({width = 16}),
                statLabel(`{tr("panel.closure_size")}: {getState("closureSize")}`, "server"),
            }),
            ui.separator({
                thickness = 2,
                orientation = "horizontal",
                spacing = 4
            }),
            ui.label({
                text = `{tr("panel.last_checked")}: {lastCheckTimeStr}`
            }),
            ui.row({
                gap = 8,
                align = "center",
                justify = "space_between"
            }, {
                firstBtn,
                ui.button({
                    text = tr("panel.clean"),
                    glyph = "trash",
                    flexGrow = 1,
                    variant = "destructive",
                    onClick = "onCleanClicked",
                }),
            })
        })
    )
end

watchState("isRunning", render)
watchState("lastCheckTimeStr", render)
watchState("localHash", render)
watchState("remoteHash", render)

function onOpen(_ctx)
    render()
end

function onCheckClicked()
    setState("command", "check")
end

function onCancelClicked()
    setState("command", "cancel")
end

function onUpdateClicked()
    command = cfg("update_command")
    if command == "" then
        noctalia.notifyError(tr("notification.update_command_is_empty"))
        return
    end

    if cfg("close_on_enter") then
        command = `{command} && echo && read -p "{tr("terminal.press_enter_to_exit")}"`
    end

    panel.close()
    noctalia.runInTerminal(command)
end

function onCleanClicked()
    command = cfg("clean_command")
    if command == "" then
        noctalia.notifyError(tr("notification.clean_command_is_empty"))
        return
    end

    if cfg("close_on_enter") then
        command = `{command} && echo && read -p "{tr("terminal.press_enter_to_exit")}"`
    end

    panel.close()
    noctalia.runInTerminal(command)
end