import SwiftUI
import SwiftData

@main
struct KangkangApp: App {
    var sharedModelContainer: ModelContainer = {
        let schema = Schema([
            Indicator.self,
            Report.self,
            DiaryEntry.self,
            Asset.self,
            ChatTurn.self,
            Symptom.self,
            UserProfile.self,
            MetricReminder.self,
            CustomMonitorMetric.self,
            HealthExport.self,
        ])
        let config = ModelConfiguration(schema: schema, isStoredInMemoryOnly: false)
        do {
            return try ModelContainer(for: schema, configurations: [config])
        } catch {
            // Demo 阶段 schema 仍在演进:旧 store 与新 schema 不兼容且无正式迁移时,
            // 自动迁移会失败导致启动崩溃。这里重置本地 store 重建(测试数据可丢)。
            // ⚠️ 生产环境必须改为正式的 SwiftData 迁移方案,不能静默删数据。
            print("⚠️ ModelContainer 创建失败,重置本地 store 重建: \(error)")
            let fm = FileManager.default
            let storePath = config.url.path
            for path in [storePath, storePath + "-wal", storePath + "-shm"] {
                try? fm.removeItem(atPath: path)
            }
            do {
                return try ModelContainer(for: schema, configurations: [config])
            } catch {
                fatalError("Could not create ModelContainer even after reset: \(error)")
            }
        }
    }()

    var body: some Scene {
        WindowGroup {
            RootView()
        }
        .modelContainer(sharedModelContainer)
    }
}