//
//  WechatShare.swift
//  ylgamehall
//
//  微信分享 SharePlatform 实现，1:1 对齐 daoqi msext WechatShareManager
//  `shareWithContent:completion:`（仅两个分支）：
//    - type == "2" → 截图分享（getImageWithFullScreenshot + JPEG 0.6 + sendImageData）
//    - else        → 链接分享（sendLinkURL + webpageUrl + title + desc）
//
//  缩略图：app icon（与原 `[self getAppIconImage]` 同源策略，不用 sharelogo）。
//
//  fire-and-forget：H5 端的 sharesuccess 已在 FriendsShareHandler 立即触发，
//  此处不再回传结果（与原 dispatch_after 1s completion(YES) 实质等价）。
//

import Foundation
import UIKit

@MainActor
public final class WechatShare: SharePlatform {

    public static let shared = WechatShare()

    public let name = "WeChat"

    public var isInstalled: Bool {
        WXApi.isWXAppInstalled()
    }

    public init() {}

    public func share(_ content: ShareContent, scene: ShareScene) {
        guard WXApi.isWXAppInstalled() else { return }

        let wxScene: WeChatManager.ShareScene = (scene == .timeline) ? .timeline : .session
        let thumb = Self.appIconImage()

        Task { @MainActor in
            do {
                if content.type == "2" {
                    // 截图分享（msext WechatShareManager isScreenshotShare 分支）
                    let shot = try ImageProvider.captureScreenshot()
                    guard let imageData = shot.jpegData(compressionQuality: 0.6) else { return }
                    try await WeChatManager.shared.shareImage(
                        .init(imageData: imageData, thumb: thumb),
                        scene: wxScene
                    )
                } else {
                    // 链接分享（msext else 分支，含 type=="1" 与任何其它值）
                    try await WeChatManager.shared.shareLink(
                        .init(
                            url: content.webpageUrl,
                            title: content.title,
                            desc: content.desc,
                            thumbnailURL: nil
                        ),
                        scene: wxScene
                    )
                }
            } catch {
                // SDK 回包失败不向 H5 反馈（sharesuccess 已乐观发出，对齐原项目）
            }
        }
    }

    /// app icon 缩略图。读 Info.plist `CFBundleIcons` → `CFBundlePrimaryIcon`
    /// → `CFBundleIconFiles` 的最后一个（最高分辨率），与原 msext
    /// WechatShareManager `getAppIconImage` 等价。失败兜底返回 1x1 透明图。
    private static func appIconImage() -> UIImage {
        if let icons = Bundle.main.object(forInfoDictionaryKey: "CFBundleIcons") as? [String: Any],
           let primary = icons["CFBundlePrimaryIcon"] as? [String: Any],
           let files = primary["CFBundleIconFiles"] as? [String],
           let last = files.last,
           let icon = UIImage(named: last) {
            return icon
        }
        if let icon = UIImage(named: "AppIcon") { return icon }
        let renderer = UIGraphicsImageRenderer(size: CGSize(width: 1, height: 1))
        return renderer.image { _ in }
    }
}