import SwiftUI

struct LeadSigningDocumentListView: View {
    let documents: [LeadDocument]
    let currentID: String?
    let signedIDs: Set<String>

    var body: some View {
        VStack(alignment: .leading, spacing: 8) {
            Text("DOKUMENTE").font(.caption).foregroundStyle(.secondary)
                .padding(.horizontal, 6)
            VStack(spacing: 0) {
                ForEach(Array(documents.enumerated()), id: \.element.id) { index, document in
                    LeadSigningDocumentRow(
                        title: document.title.replacingOccurrences(of: ".pdf", with: ""),
                        number: index + 1,
                        isCurrent: document.id == currentID && document.status != .signed && !signedIDs.contains(document.id),
                        isSigned: document.status == .signed || signedIDs.contains(document.id)
                    )
                    if document.id != documents.last?.id {
                        Divider().padding(.leading, 44)
                    }
                }
            }
            .background(Color(uiColor: .secondarySystemGroupedBackground), in: .rect(cornerRadius: 12))
            .clipShape(.rect(cornerRadius: 12))
        }
        .padding(12)
    }
}

struct LeadSigningDocumentRow: View {
    let title: String
    let number: Int
    let isCurrent: Bool
    let isSigned: Bool

    var body: some View {
        HStack(spacing: 12) {
            if isSigned {
                Image(systemName: "checkmark.circle.fill").foregroundStyle(.green).frame(width: 20)
            } else {
                Text(number.formatted()).foregroundStyle(isCurrent ? Color.accentColor : .secondary)
                    .frame(width: 20)
            }
            VStack(alignment: .leading, spacing: 3) {
                Text(title).fontWeight(isCurrent ? .semibold : .regular).lineLimit(2)
                Text(isSigned ? "Unterschrieben" : isCurrent ? "Jetzt unterschreiben" : "Ausstehend")
                    .font(.caption)
                    .foregroundStyle(isSigned ? Color.green : isCurrent ? Color.accentColor : .secondary)
            }
            Spacer(minLength: 0)
        }
        .padding(12)
        .frame(maxWidth: .infinity, alignment: .leading)
        .background(isCurrent ? Color.accentColor.opacity(0.10) : .clear)
        .accessibilityElement(children: .combine)
        .accessibilityAddTraits(isCurrent ? .isSelected : [])
    }
}