import Foundation
import Apollo

class GraphQLService {
    static let shared = GraphQLService()
    
    private let apollo: ApolloClient
    
    private init() {
        let url = URL(string: "https://api.sankofa.nexus/graphql")!
        let store = ApolloStore(cache: InMemoryNormalizedCache())
        let networkTransport = RequestChainNetworkTransport(
            interceptorProvider: DefaultInterceptorProvider(store: store),
            endpointURL: url
        )
        
        self.apollo = ApolloClient(networkTransport: networkTransport, store: store)
    }
    
    func fetchResources(completion: @escaping (Result<[Resource], Error>) -> Void) {
        // GraphQL query implementation
        // This would use Apollo iOS SDK to fetch resources
    }
    
    func fetchSystemHealth(completion: @escaping (Result<SystemHealth, Error>) -> Void) {
        // GraphQL query for system health
    }
    
    func fetchCostOverview(completion: @escaping (Result<CostOverview, Error>) -> Void) {
        // GraphQL query for cost overview
    }
}

struct Resource: Codable {
    let id: String
    let name: String
    let type: String
    let status: String
}

struct SystemHealth: Codable {
    let regions: HealthMetrics
    let clusters: HealthMetrics
    let nodes: HealthMetrics
}

struct HealthMetrics: Codable {
    let total: Int
    let healthy: Int
    let warning: Int
    let critical: Int
}

struct CostOverview: Codable {
    let currentMonth: Double
    let lastMonth: Double
    let trend: String
    let percentageChange: Double
}