#if os(iOS)
import SwiftUI

@available(macOS 10.15, iOS 13.0, *)
struct BookDetailView: View {
    let book: BookMeta
    let index: BundleIndex
    let bundleDir: URL

    var annotations: [AnnotationRow] { index.annotationsMap[book.id] ?? [] }
    var review: String? { index.bookIntro[book.title] }

    var body: some View {
        NavigationStack {
            ScrollView {
                VStack(alignment: .leading, spacing: 16) {
                    HStack(alignment:.top, spacing:16) {
                        CoverImageView(book: book, bundleDir: bundleDir).frame(width:120,height:170)
                        VStack(alignment:.leading, spacing:8) {
                            Text(book.title).font(.title2).bold()
                            Text(book.author).foregroundColor(.secondary)
                            if let y = book.readtime_year { Text("全年阅读 \(y/60) 小时").font(.callout) }
                            if book.is_finished_this_year == true { Text("今年已读完 ✅").font(.caption).foregroundColor(.green) }
                        }
                        Spacer()
                    }
                    if let review = review, !review.isEmpty {
                        VStack(alignment:.leading, spacing:8) {
                            Text("书籍简评").font(.headline)
                            Text(review).font(.body)
                        }
                    }
                    if !annotations.isEmpty {
                        VStack(alignment:.leading, spacing:8) {
                            Text("批注 (\(annotations.count))").font(.headline)
                            ForEach(annotations) { ann in
                                VStack(alignment:.leading, spacing:4) {
                                    if let sel = ann.selected { Text(sel).font(.body) }
                                    if let note = ann.note, !note.isEmpty { Text("✎ " + note).font(.footnote).foregroundColor(.secondary) }
                                    Divider()
                                }
                            }
                        }
                    } else {
                        Text("无批注").foregroundColor(.secondary)
                    }
                }
                .padding()
            }
            .navigationTitle("详情")
            .navigationBarTitleDisplayMode(.inline)
        }
    }
}
#endif