//
//  WiredTransferPhotoRow.swift
//  suixinkan
//

import SwiftUI
import UIKit

/// 有线传图照片列表行。
struct WiredTransferPhotoRow: View {
    let photo: WiredTransferPhotoItem
    let selectUploadMode: Bool
    let selected: Bool
    let onToggleSelection: () -> Void
    let onPhotoClick: () -> Void
    let onRetry: () -> Void
    let onDelete: () -> Void

    private var canSelect: Bool { photo.canSelectForSpecifyUpload }
    private var canRetry: Bool { photo.status == .failed || photo.status == .pending }
    private var rowOpacity: Double { selectUploadMode && !canSelect ? 0.45 : 1 }

    var body: some View {
        VStack(spacing: 0) {
            HStack(alignment: .center, spacing: 8) {
                if selectUploadMode {
                    Button(action: onToggleSelection) {
                        WiredTransferSelectIndicator(selected: selected, enabled: canSelect)
                    }
                    .buttonStyle(.plain)
                    .disabled(!canSelect)
                }

                thumbnailView
                    .frame(width: WiredTransferDesign.thumbnailSize, height: WiredTransferDesign.thumbnailSize)
                    .clipShape(RoundedRectangle(cornerRadius: WiredTransferDesign.thumbnailCornerRadius))
                    .opacity(rowOpacity)
                    .onTapGesture {
                        if !selectUploadMode { onPhotoClick() }
                    }

                VStack(alignment: .leading, spacing: 3) {
                    HStack(spacing: 4) {
                        Text(photo.fileName)
                            .font(.system(size: 12, weight: .medium))
                            .foregroundStyle(WiredTransferDesign.text333.opacity(rowOpacity))
                            .lineLimit(1)
                        Spacer(minLength: 0)
                        WiredTransferStatusBadge(status: photo.status)
                            .opacity(rowOpacity)
                    }
                    Text(metaText)
                        .font(.system(size: 10))
                        .foregroundStyle(WiredTransferDesign.text999.opacity(rowOpacity))
                        .lineLimit(1)
                }

                if !selectUploadMode {
                    Menu {
                        Button("重传") { onRetry() }
                            .disabled(!canRetry)
                        Button("删除", role: .destructive) { onDelete() }
                    } label: {
                        Image(systemName: "ellipsis")
                            .font(.system(size: 16))
                            .foregroundStyle(WiredTransferDesign.text666)
                            .frame(width: 32, height: 32)
                            .rotationEffect(.degrees(90))
                    }
                }
            }
            .padding(.horizontal, 10)
            .padding(.vertical, 8)
            .contentShape(Rectangle())
            .onTapGesture {
                if selectUploadMode, canSelect { onToggleSelection() }
            }

            if photo.status == .transferring || photo.status == .uploading {
                ProgressView(value: Double(photo.progress), total: 100)
                    .tint(AppDesign.primary)
                    .frame(height: WiredTransferDesign.progressBarHeight)
                    .padding(.horizontal, 10)
                    .padding(.bottom, 8)
            }
        }
    }

    private var metaText: String {
        if photo.resolutionText.isEmpty { return photo.fileSizeText }
        return "\(photo.fileSizeText) \(photo.resolutionText)"
    }

    @ViewBuilder
    private var thumbnailView: some View {
        if photo.thumbnailURL.hasPrefix("file://"), let url = URL(string: photo.thumbnailURL) {
            if let uiImage = UIImage(contentsOfFile: url.path) {
                Image(uiImage: uiImage)
                    .resizable()
                    .aspectRatio(contentMode: .fill)
            } else {
                thumbnailPlaceholder
            }
        } else if !photo.thumbnailURL.isEmpty {
            RemoteImage(urlString: photo.thumbnailURL) {
                thumbnailPlaceholder
            }
        } else {
            thumbnailPlaceholder
        }
    }

    private var thumbnailPlaceholder: some View {
        WiredTransferDesign.pageBackground
            .overlay {
                Image(systemName: "photo")
                    .foregroundStyle(WiredTransferDesign.text999)
            }
    }
}