Commilitia-Drop/ios/CDrop/Widgets/CloudClipboardWidget.swift

import AppIntents
import SwiftUI
import WidgetKit

// 主屏 / 锁屏小组件「云剪贴板」（#6）：在控制中心两控件之外，提供一个可放主屏的交互式小组件，含上传 /
// 拉取两个按钮（iOS 17+ 交互式小组件，按钮直接跑 AppIntent，无需打开 app）。触发结果经 WidgetFeedback
// 弹本地通知反馈。按钮复用与控制中心相同的 Upload/PullClipboardIntent。
struct ClipboardWidgetEntry: TimelineEntry
{
    let date: Date
}

// 纯按钮小组件，无动态内容：单条永不刷新的时间线即可（交互由按钮的 AppIntent 驱动）。
struct ClipboardWidgetProvider: TimelineProvider
{
    func placeholder(in context: Context) -> ClipboardWidgetEntry { ClipboardWidgetEntry(date: Date()) }

    func getSnapshot(in context: Context, completion: @escaping (ClipboardWidgetEntry) -> Void)
    {
        completion(ClipboardWidgetEntry(date: Date()))
    }

    func getTimeline(in context: Context, completion: @escaping (Timeline<ClipboardWidgetEntry>) -> Void)
    {
        completion(Timeline(entries: [ ClipboardWidgetEntry(date: Date()) ], policy: .never))
    }
}

struct ClipboardWidgetView: View
{
    @Environment(\.widgetFamily) private var family
    var entry: ClipboardWidgetEntry

    var body: some View
    {
        Group
        {
            if family == .systemMedium { mediumLayout } else { smallLayout }
        }
        .containerBackground(for: .widget) { brandBackground }
    }

    // 小尺寸：slim 品牌 header（吉祥物 + 名）+ 两个全宽按钮填满余下高度（最大化利用空间、大点按区）。
    private var smallLayout: some View
    {
        VStack(spacing: 10)
        {
            HStack(spacing: 8)
            {
                BrandMark(size: 30)
                Text(t("ios.widget.clipboardName"))
                    .font(.subheadline).bold()
                    .lineLimit(1)
                Spacer(minLength: 0)
            }
            actionButton(t("ios.control.upload"), "square.and.arrow.up", UploadClipboardIntent())
            actionButton(t("ios.control.pull"), "square.and.arrow.down", PullClipboardIntent())
        }
        .frame(maxWidth: .infinity, maxHeight: .infinity)
        .padding(14)
    }

    // 中尺寸：左侧大吉祥物作视觉锚，右侧名 + 两按钮竖排，吃满横向空间。
    private var mediumLayout: some View
    {
        HStack(spacing: 18)
        {
            BrandMark(size: 72)
            VStack(alignment: .leading, spacing: 9)
            {
                Text(t("ios.widget.clipboardName"))
                    .font(.headline)
                    .lineLimit(1)
                actionButton(t("ios.control.upload"), "square.and.arrow.up", UploadClipboardIntent())
                actionButton(t("ios.control.pull"), "square.and.arrow.down", PullClipboardIntent())
            }
            .frame(maxWidth: .infinity, alignment: .leading)
        }
        .frame(maxWidth: .infinity, maxHeight: .infinity)
        .padding(16)
    }

    // 品牌底：淡品牌色斜向渐变（取代原 .fill.tertiary 灰底），与吉祥物 / 按钮同色系。
    private var brandBackground: some View
    {
        LinearGradient(
            colors: [ Color.cdropAccent.opacity(0.18), Color.cdropAccent.opacity(0.05) ],
            startPoint: .topLeading, endPoint: .bottomTrailing)
    }

    private func actionButton(_ title: String, _ symbol: String, _ intent: some AppIntent) -> some View
    {
        Button(intent: intent)
        {
            Label(title, systemImage: symbol)
                .font(.caption).fontWeight(.semibold)
                .lineLimit(1)
                .frame(maxWidth: .infinity)
                .padding(.vertical, 3)
        }
        .buttonStyle(.borderedProminent)
        .tint(.cdropAccent)
    }
}

struct CloudClipboardWidget: Widget
{
    var body: some WidgetConfiguration
    {
        StaticConfiguration(kind: "net.commilitia.Commilitia-Drop.widget.clipboard", provider: ClipboardWidgetProvider())
        { entry in
            ClipboardWidgetView(entry: entry)
        }
        .configurationDisplayName(t("ios.widget.clipboardName"))
        .description(t("ios.widget.clipboardDesc"))
        .supportedFamilies([ .systemSmall, .systemMedium ])
    }
}