onyx/Packages/OnyxKit/Sources/MetricsProvider/MetricPopovers.swift

import SwiftUI
import OnyxDesign

/// Die Detailansichten hinter den Menüleisten-Symbolen.
///
/// Hier ist ausdrücklich Platz — anders als in der Menüleiste, wo jede Zahl um
/// Breite kämpft. Ein Popover, das nur den Wert größer wiederholt, den man
/// gerade angeklickt hat, ist verschenkt.
@MainActor
struct MetricPopoverContent: View {
    let model: MetricsModel
    let metric: MetricKind

    var body: some View {
        VStack(alignment: .leading, spacing: 12) {
            switch metric {
            case .cpu, .gpu: ProcessorDetail(model: model, metric: metric)
            case .memory:    MemoryDetail(snapshot: model.snapshot)
            case .battery:   BatteryDetail(snapshot: model.snapshot, control: model.chargeControl)
            case .temperature: SensorDetail(snapshot: model.snapshot)
            }
        }
        .padding(14)
        .frame(width: 280)
    }
}

// MARK: - Bausteine

/// Überschrift eines Abschnitts. Ohne sie ist eine lange Werteliste nur eine
/// lange Werteliste.
private struct SectionTitle: View {
    let text: LocalizedStringKey

    var body: some View {
        Text(text, bundle: .module)
            .font(.caption.weight(.semibold))
            .foregroundStyle(.tint)
            .textCase(.uppercase)
    }
}

private struct Row: View {
    let label: String
    let value: String
    var emphasis: Color?

    var body: some View {
        HStack {
            Text(label).font(.callout)
            Spacer(minLength: 12)
            Text(value)
                .font(.callout.monospacedDigit())
                .foregroundStyle(emphasis ?? .secondary)
        }
    }
}

/// Ein Ring mit Zahl in der Mitte.
private struct Dial: View {
    let value: Double
    let caption: String
    let text: String
    var tint: Color = .accentColor

    var body: some View {
        VStack(spacing: 2) {
            ZStack {
                Circle().stroke(.quaternary, lineWidth: 5)
                Circle()
                    .trim(from: 0, to: min(max(value, 0), 1))
                    .stroke(tint, style: .init(lineWidth: 5, lineCap: .round))
                    .rotationEffect(.degrees(-90))
                Text(text).font(.system(size: 15, weight: .medium).monospacedDigit())
            }
            .frame(width: 62, height: 62)
            Text(caption).font(.caption2).foregroundStyle(.secondary)
        }
    }
}

// MARK: - Prozessor

private struct ProcessorDetail: View {
    let model: MetricsModel
    let metric: MetricKind

    var body: some View {
        let snapshot = model.snapshot

        HStack(spacing: 14) {
            Dial(value: metric == .cpu ? snapshot.cpu.total : (snapshot.gpu ?? 0),
                 caption: metric == .cpu ? "CPU" : "GPU",
                 text: MetricFormat.percent(metric == .cpu ? snapshot.cpu.total
                                                           : (snapshot.gpu ?? 0)))
            if let celsius = metric == .cpu ? snapshot.cpu.temperature : snapshot.gpuTemperature {
                Dial(value: celsius / 100,
                     caption: String(localized: "popover.temperature", bundle: .module),
                     text: MetricFormat.temperature(celsius),
                     tint: MetricSummary.temperatureColor(celsius))
            }
            if let fan = snapshot.fans.first {
                Dial(value: fan.fraction,
                     caption: String(localized: "popover.fans", bundle: .module),
                     text: MetricFormat.percent(fan.fraction))
            }
        }
        .frame(maxWidth: .infinity)

        if metric == .cpu, !model.snapshot.cpu.perCore.isEmpty {
            SectionTitle(text: "popover.perCore")
            CoreGrid(values: model.snapshot.cpu.perCore)
        }

        SectionTitle(text: "popover.power")
        if let cpu = snapshot.power.cpu {
            Row(label: String(localized: "popover.power.cpu", bundle: .module),
                value: MetricFormat.watts(cpu))
        }
        if let display = snapshot.power.display {
            Row(label: String(localized: "popover.power.display", bundle: .module),
                value: MetricFormat.watts(display))
        }
        if let total = snapshot.power.total {
            Row(label: String(localized: "popover.power.total", bundle: .module),
                value: MetricFormat.watts(total), emphasis: .primary)
        }

        if !snapshot.fans.isEmpty {
            SectionTitle(text: "popover.fans")
            ForEach(snapshot.fans) { fan in
                Row(label: fan.name, value: "\(Int(fan.rpm)) U/min")
            }
        }

        Divider()
        Picker("", selection: Binding(
            get: { model.displayMode(for: metric) },
            set: { model.setDisplayMode($0, for: metric) })) {
                Text("metric.mode.usage", bundle: .module).tag(MetricDisplayMode.usage)
                Text("metric.mode.temperature", bundle: .module).tag(MetricDisplayMode.temperature)
            }
            .pickerStyle(.segmented)
            .labelsHidden()
    }
}

/// Ein Kästchen je Kern statt einer Balkenreihe.
///
/// Bei fünfzehn Kernen wird eine Reihe unleserlich schmal. Als Raster bleibt
/// jeder Kern erkennbar, und man sieht auf einen Blick, ob eine einzelne Last
/// läuft oder alles arbeitet.
private struct CoreGrid: View {
    let values: [Double]

    var body: some View {
        LazyVGrid(columns: Array(repeating: GridItem(.flexible(), spacing: 3), count: 8),
                  spacing: 3) {
            ForEach(Array(values.enumerated()), id: \.offset) { _, value in
                RoundedRectangle(cornerRadius: 2, style: .continuous)
                    .fill(Color.accentColor.opacity(0.18))
                    .overlay(alignment: .bottom) {
                        RoundedRectangle(cornerRadius: 2, style: .continuous)
                            .fill(Color.accentColor)
                            .frame(height: max(14 * value, 1.5))
                    }
                    .frame(height: 14)
            }
        }
    }
}

// MARK: - Speicher

private struct MemoryDetail: View {
    let snapshot: MetricsSnapshot

    var body: some View {
        let memory = snapshot.memory

        HStack(spacing: 14) {
            Dial(value: memory.usedFraction,
                 caption: String(localized: "popover.memory.used", bundle: .module),
                 text: MetricFormat.percent(memory.usedFraction),
                 tint: pressureColor)
            VStack(alignment: .leading, spacing: 3) {
                legend(.accentColor, "popover.memory.app", memory.app)
                legend(.purple, "popover.memory.wired", memory.wired)
                legend(.teal, "popover.memory.compressed", memory.compressed)
                legend(.gray, "popover.memory.free", memory.free)
            }
        }

        SectionTitle(text: "popover.memory.swap")
        // Auslagerung ist der Wert, der zählt: solange nicht ausgelagert wird,
        // ist ein voller Speicher kein Problem — macOS füllt ihn absichtlich.
        Row(label: String(localized: "popover.memory.swapUsed", bundle: .module),
            value: "\(bytes(memory.swapUsed)) / \(bytes(memory.swapTotal))",
            emphasis: memory.swapUsed > 512 * 1024 * 1024 ? .orange : nil)

        if !snapshot.topMemoryProcesses.isEmpty {
            SectionTitle(text: "popover.processes")
            ForEach(snapshot.topMemoryProcesses) { process in
                Row(label: process.name, value: bytes(process.bytes))
            }
        }
    }

    private var pressureColor: Color {
        switch snapshot.memory.pressure {
        case .normal: .green
        case .warning: .orange
        case .critical: .red
        }
    }

    private func legend(_ color: Color, _ key: LocalizedStringKey, _ value: UInt64) -> some View {
        HStack(spacing: 5) {
            Circle().fill(color).frame(width: 7, height: 7)
            Text(key, bundle: .module).font(.caption)
            Spacer(minLength: 8)
            Text(bytes(value)).font(.caption.monospacedDigit()).foregroundStyle(.secondary)
        }
    }

    private func bytes(_ value: UInt64) -> String {
        ByteCountFormatter.string(fromByteCount: Int64(value), countStyle: .binary)
    }
}

// MARK: - Akku

private struct BatteryDetail: View {
    let snapshot: MetricsSnapshot
    let control: (any ChargeLimitReading)?

    var body: some View {
        if let battery = snapshot.battery {
            HStack(spacing: 14) {
                Dial(value: battery.charge,
                     caption: String(localized: "metric.battery", bundle: .module),
                     text: MetricFormat.percent(battery.charge),
                     tint: battery.isCharging ? .green
                         : (battery.charge < 0.2 ? .red : .accentColor))
                VStack(alignment: .leading, spacing: 4) {
                    if let remaining = battery.timeRemaining {
                        Text(duration(remaining)).font(.title3.monospacedDigit())
                        Text(battery.isCharging ? "popover.battery.untilFull"
                                                : "popover.battery.remaining",
                             bundle: .module)
                            .font(.caption).foregroundStyle(.secondary)
                    } else {
                        Text(battery.isPluggedIn ? "popover.battery.pluggedIn"
                                                 : "popover.battery.calculating",
                             bundle: .module)
                            .font(.callout).foregroundStyle(.secondary)
                    }
                }
            }

            // Das Ladelimit steht hier und nicht in den Einstellungen: es ist
            // eine Akkusache, und man greift danach, während man auf den
            // Ladestand schaut.
            if let control {
                Divider().overlay(Onyx.Color.hairline)
                ChargeLimitControl(control: control, roomy: true)
            }

            SectionTitle(text: "popover.battery.condition")
            if let health = battery.health {
                Row(label: String(localized: "popover.battery.health", bundle: .module),
                    value: MetricFormat.percent(health))
            }
            if let cycles = battery.cycleCount {
                Row(label: String(localized: "popover.battery.cycles", bundle: .module),
                    value: "\(cycles)")
            }
            if let sensor = snapshot.sensors.first(where: { $0.key == "TB0T" }) {
                Row(label: String(localized: "popover.temperature", bundle: .module),
                    value: MetricFormat.temperature(sensor.celsius))
            }

            SectionTitle(text: "popover.power")
            if let watts = battery.watts {
                Row(label: String(localized: battery.isCharging ? "popover.battery.charging"
                                                                : "popover.battery.draining",
                                  bundle: .module),
                    value: MetricFormat.watts(abs(watts)), emphasis: .primary)
            }
            if let adapter = snapshot.power.adapter, adapter > 0 {
                Row(label: String(localized: "popover.power.adapter", bundle: .module),
                    value: MetricFormat.watts(adapter))
            }
            if let voltage = snapshot.power.busVoltage {
                Row(label: String(localized: "popover.battery.voltage", bundle: .module),
                    value: String(format: "%.2f V", voltage))
            }

            Divider()
            // Ehrlich benennen, was fehlt: das Ladelimit braucht Schreibzugriff
            // auf den SMC und damit den privilegierten Helfer — und der Key ist
            // auf diesem Modell noch nicht identifiziert.
            Text("popover.battery.limitComing", bundle: .module)
                .font(.caption).foregroundStyle(.secondary)
                .fixedSize(horizontal: false, vertical: true)
        } else {
            Text("popover.battery.none", bundle: .module).foregroundStyle(.secondary)
        }
    }

    private func duration(_ seconds: TimeInterval) -> String {
        let total = Int(seconds / 60)
        return total >= 60 ? "\(total / 60) h \(total % 60) min" : "\(total) min"
    }
}

// MARK: - Sensoren

private struct SensorDetail: View {
    let snapshot: MetricsSnapshot

    var body: some View {
        SectionTitle(text: "popover.temperature")
        ForEach(snapshot.sensors) { sensor in
            HStack {
                Text(sensor.name).font(.callout)
                Spacer(minLength: 12)
                Text(MetricFormat.temperature(sensor.celsius))
                    .font(.callout.monospacedDigit())
                    .foregroundStyle(MetricSummary.temperatureColor(sensor.celsius))
                // Der Ring macht aus einer Zahl einen Vergleich: 45° neben 79°
                // sieht man schneller als man es liest.
                Circle()
                    .trim(from: 0, to: min(sensor.celsius / 100, 1))
                    .stroke(MetricSummary.temperatureColor(sensor.celsius),
                            style: .init(lineWidth: 2, lineCap: .round))
                    .rotationEffect(.degrees(-90))
                    .frame(width: 12, height: 12)
            }
        }

        if !snapshot.fans.isEmpty {
            SectionTitle(text: "popover.fans")
            ForEach(snapshot.fans) { fan in
                VStack(alignment: .leading, spacing: 2) {
                    HStack {
                        Text(fan.name).font(.callout)
                        Spacer(minLength: 12)
                        Text("\(Int(fan.rpm)) U/min").font(.callout.monospacedDigit())
                            .foregroundStyle(.secondary)
                    }
                    // Ohne Bezug sagt eine Drehzahl nichts: der Balken zeigt sie
                    // zwischen dem Minimum und Maximum der Firmware.
                    ProgressView(value: fan.fraction).controlSize(.small)
                }
            }
            Text("metric.fan.controlComing", bundle: .module)
                .font(.caption).foregroundStyle(.secondary)
                .fixedSize(horizontal: false, vertical: true)
        }
    }
}