//
//  HomeSupportViews.swift
//  suixinkan
//
//  Created by Codex on 2026/6/22.
//

import SwiftUI

extension HomeRoute {
    /// 将首页路由映射为真实页面或迁移占位页。
    @ViewBuilder
    var destinationView: some View {
        switch self {
        case .profileSpace:
            ProfileView()
        case .scenicSelection:
            HomeScenicSelectionView()
        case .moreFunctions:
            HomeMoreFunctionsView()
        case let .modulePlaceholder(uri, title):
            HomeMigrationModuleView(title: title, uri: uri)
        }
    }
}

/// 首页迁移占位视图，用于承接尚未同步的功能入口。
struct HomeMigrationModuleView: View {
    let title: String
    let uri: String

    var body: some View {
        VStack(spacing: AppMetrics.Spacing.medium) {
            Image(systemName: "square.grid.2x2")
                .font(.system(size: 44, weight: .semibold))
                .foregroundStyle(AppDesign.primary)

            Text(title)
                .font(.system(size: AppMetrics.FontSize.title2, weight: .semibold))
                .foregroundStyle(AppDesign.textPrimary)

            Text(uri)
                .font(.system(size: AppMetrics.FontSize.subheadline))
                .foregroundStyle(AppDesign.textSecondary)
                .lineLimit(2)
                .multilineTextAlignment(.center)
                .padding(.horizontal, AppMetrics.Spacing.large)
        }
        .frame(maxWidth: .infinity, maxHeight: .infinity)
        .background(Color(hex: 0xF5F7FA))
        .navigationTitle(title)
        .navigationBarTitleDisplayMode(.inline)
    }
}

/// 首页景区选择视图，允许用户切换当前账号上下文中的景区。
struct HomeScenicSelectionView: View {
    @Environment(AccountContext.self) private var accountContext
    @Environment(\.dismiss) private var dismiss

    var body: some View {
        List(accountContext.scenicScopes) { scenic in
            Button {
                accountContext.selectScenic(id: scenic.id)
                dismiss()
            } label: {
                HStack {
                    Text(scenic.name)
                        .foregroundStyle(AppDesign.textPrimary)
                    Spacer()
                    if accountContext.currentScenic?.id == scenic.id {
                        Image(systemName: "checkmark")
                            .font(.system(size: AppMetrics.ControlSize.smallIcon, weight: .semibold))
                            .foregroundStyle(AppDesign.primary)
                    }
                }
            }
        }
        .navigationTitle("景区选择")
        .navigationBarTitleDisplayMode(.inline)
    }
}