webylib 0.1.0

//! iOS-specific server communication implementation
//!
//! This module provides iOS-specific TLS handling for Webcash server communication.
//! It allows iOS apps to use the platform's native TLS implementation instead of
//! relying on external TLS libraries.

use serde::{Deserialize, Serialize};
use std::sync::Arc;

use crate::error::{Error, Result};
use crate::webcash::PublicWebcash;
use crate::server::{HealthResponse, ReplaceRequest, ReplaceResponse, TargetResponse, MiningReportRequest, MiningReportResponse};

/// iOS-specific server client configuration
#[derive(Debug, Clone)]
pub struct IOSServerConfig {
    /// Base URL of the Webcash server
    pub base_url: String,
    /// Request timeout in seconds
    pub timeout_seconds: u64,
    /// Custom TLS configuration for iOS
    pub tls_config: Option<IOSCustomTLS>,
}

impl Default for IOSServerConfig {
    fn default() -> Self {
        IOSServerConfig {
            base_url: "https://webcash.org".to_string(),
            timeout_seconds: 30,
            tls_config: None,
        }
    }
}

/// iOS custom TLS configuration
#[derive(Debug, Clone)]
pub struct IOSCustomTLS {
    /// Custom certificate data (DER format)
    pub certificate_data: Option<Vec<u8>>,
    /// Custom root certificates
    pub root_certificates: Vec<Vec<u8>>,
    /// Client certificate for mutual TLS
    pub client_certificate: Option<Vec<u8>>,
    /// Client private key for mutual TLS
    pub client_key: Option<Vec<u8>>,
}

/// iOS-specific server client
pub struct IOSServerClient {
    config: IOSServerConfig,
    // iOS-specific HTTP client would be initialized here
    // For now, we use a placeholder that would be replaced with
    // actual iOS networking APIs (URLSession, etc.)
    _client: Arc<IOSHttpClient>,
}

/// Placeholder for iOS HTTP client
/// In a real implementation, this would wrap iOS URLSession
struct IOSHttpClient {
    // iOS-specific networking implementation would go here
}

impl IOSServerClient {
    /// Create a new iOS server client with default configuration
    pub fn new() -> Result<Self> {
        Self::with_config(IOSServerConfig::default())
    }

    /// Create a new iOS server client with custom configuration
    pub fn with_config(config: IOSServerConfig) -> Result<Self> {
        // Initialize iOS-specific HTTP client
        let client = Arc::new(IOSHttpClient::new(&config)?);

        Ok(IOSServerClient {
            config,
            _client: client,
        })
    }

    /// Check the health status of webcash entries
    pub async fn health_check(&self, webcash: &[PublicWebcash]) -> Result<HealthResponse> {
        let mut request_data = Vec::new();
        for wc in webcash {
            request_data.push(wc.to_string());
        }

        let url = format!("{}/api/v1/health_check", self.config.base_url);

        // iOS-specific HTTP request implementation
        self.perform_request("POST", &url, Some(&request_data)).await
    }

    /// Submit a replacement request to the server
    pub async fn replace(&self, request: &ReplaceRequest) -> Result<ReplaceResponse> {
        let url = format!("{}/api/v1/replace", self.config.base_url);

        // iOS-specific HTTP request implementation
        self.perform_request("POST", &url, Some(request)).await
    }

    /// Get current mining target information
    pub async fn get_target(&self) -> Result<TargetResponse> {
        let url = format!("{}/api/v1/target", self.config.base_url);

        // iOS-specific HTTP request implementation
        self.perform_request("GET", &url, None::<&()>).await
    }

    /// Submit a mining report
    pub async fn submit_mining_report(&self, report: &MiningReportRequest) -> Result<MiningReportResponse> {
        let url = format!("{}/api/v1/mining_report", self.config.base_url);

        // iOS-specific HTTP request implementation
        self.perform_request("POST", &url, Some(report)).await
    }

    /// Perform HTTP request using iOS networking APIs
    async fn perform_request<T: Serialize, R: for<'de> Deserialize<'de>>(
        &self,
        method: &str,
        url: &str,
        body: Option<&T>,
    ) -> Result<R> {
        // This is where the actual iOS networking implementation would go
        // For now, return a placeholder error

        // TODO: Implement using iOS URLSession APIs
        // - Create URLRequest
        // - Configure TLS settings
        // - Handle authentication if needed
        // - Perform async request
        // - Parse JSON response

        Err(Error::Server("iOS networking implementation not yet complete".to_string()))
    }
}

impl IOSHttpClient {
    /// Create new iOS HTTP client
    fn new(_config: &IOSServerConfig) -> Result<Self> {
        // Initialize iOS URLSession with custom TLS configuration
        // This would use iOS Security framework and URLSession APIs

        Ok(IOSHttpClient {})
    }
}

#[async_trait::async_trait]
impl crate::server::ServerClientTrait for IOSServerClient {
    async fn health_check(&self, webcash: &[PublicWebcash]) -> Result<HealthResponse> {
        self.health_check(webcash).await
    }

    async fn replace(&self, request: &ReplaceRequest) -> Result<ReplaceResponse> {
        self.replace(request).await
    }

    async fn get_target(&self) -> Result<TargetResponse> {
        self.get_target().await
    }

    async fn submit_mining_report(&self, report: &MiningReportRequest) -> Result<MiningReportResponse> {
        self.submit_mining_report(report).await
    }
}