quantrs2-device 0.1.3

//! Monetization System for Algorithm Marketplace
//!
//! This module handles payment processing, revenue sharing, subscription management,
//! and financial analytics for the quantum algorithm marketplace.

use super::*;

/// Monetization system
pub struct MonetizationSystem {
    config: MonetizationConfig,
    payment_processors: Vec<Box<dyn PaymentProcessor + Send + Sync>>,
    subscription_manager: SubscriptionManager,
    revenue_tracker: RevenueTracker,
    pricing_engine: PricingEngine,
}

/// Payment processor trait
pub trait PaymentProcessor {
    fn process_payment(&self, payment: &PaymentRequest) -> DeviceResult<PaymentResult>;
    fn refund_payment(&self, payment_id: &str, amount: f64) -> DeviceResult<RefundResult>;
    fn get_processor_name(&self) -> String;
}

/// Payment request
#[derive(Debug, Clone)]
pub struct PaymentRequest {
    pub payment_id: String,
    pub user_id: String,
    pub amount: f64,
    pub currency: String,
    pub payment_method: PaymentMethod,
    pub description: String,
    pub metadata: HashMap<String, String>,
}

/// Payment result
#[derive(Debug, Clone)]
pub struct PaymentResult {
    pub success: bool,
    pub transaction_id: Option<String>,
    pub error_message: Option<String>,
    pub processing_fee: f64,
}

/// Refund result
#[derive(Debug, Clone)]
pub struct RefundResult {
    pub success: bool,
    pub refund_id: Option<String>,
    pub refunded_amount: f64,
    pub error_message: Option<String>,
}

/// Subscription manager
pub struct SubscriptionManager {
    active_subscriptions: HashMap<String, Subscription>,
    subscription_plans: HashMap<String, SubscriptionPlan>,
    billing_cycles: Vec<BillingCycle>,
}

/// Subscription
#[derive(Debug, Clone)]
pub struct Subscription {
    pub subscription_id: String,
    pub user_id: String,
    pub plan_id: String,
    pub status: SubscriptionStatus,
    pub created_at: SystemTime,
    pub current_period_start: SystemTime,
    pub current_period_end: SystemTime,
    pub usage_metrics: UsageMetrics,
}

/// Subscription status
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum SubscriptionStatus {
    Active,
    Inactive,
    PastDue,
    Cancelled,
    Trialing,
    Paused,
}

/// Subscription plan
#[derive(Debug, Clone)]
pub struct SubscriptionPlan {
    pub plan_id: String,
    pub name: String,
    pub description: String,
    pub pricing: PlanPricing,
    pub features: Vec<PlanFeature>,
    pub usage_limits: UsageLimits,
    pub trial_period: Option<Duration>,
}

/// Plan pricing
#[derive(Debug, Clone)]
pub struct PlanPricing {
    pub base_price: f64,
    pub currency: String,
    pub billing_period: BillingPeriod,
    pub usage_based_pricing: Vec<UsageBasedPricing>,
}

/// Billing period
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum BillingPeriod {
    Daily,
    Weekly,
    Monthly,
    Quarterly,
    Yearly,
    Custom(Duration),
}

/// Usage-based pricing
#[derive(Debug, Clone)]
pub struct UsageBasedPricing {
    pub metric: String,
    pub price_per_unit: f64,
    pub included_units: usize,
    pub overage_price: f64,
}

/// Plan feature
#[derive(Debug, Clone)]
pub struct PlanFeature {
    pub feature_name: String,
    pub feature_type: FeatureType,
    pub enabled: bool,
    pub limit: Option<usize>,
}

/// Feature types
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum FeatureType {
    AlgorithmAccess,
    DeploymentSlots,
    ComputeResources,
    StorageQuota,
    SupportLevel,
    Custom(String),
}

/// Usage limits
#[derive(Debug, Clone)]
pub struct UsageLimits {
    pub max_algorithms: Option<usize>,
    pub max_deployments: Option<usize>,
    pub max_compute_hours: Option<f64>,
    pub max_storage_gb: Option<f64>,
    pub max_api_calls: Option<usize>,
}

/// Usage metrics
#[derive(Debug, Clone)]
pub struct UsageMetrics {
    pub algorithms_used: usize,
    pub deployments_active: usize,
    pub compute_hours_consumed: f64,
    pub storage_gb_used: f64,
    pub api_calls_made: usize,
    pub quantum_volume_consumed: f64,
}

/// Billing cycle
#[derive(Debug, Clone)]
pub struct BillingCycle {
    pub cycle_id: String,
    pub subscription_id: String,
    pub period_start: SystemTime,
    pub period_end: SystemTime,
    pub amount_due: f64,
    pub amount_paid: f64,
    pub status: BillingStatus,
}

/// Billing status
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum BillingStatus {
    Pending,
    Paid,
    Overdue,
    Failed,
    Refunded,
}

/// Revenue tracker
pub struct RevenueTracker {
    revenue_records: Vec<RevenueRecord>,
    revenue_analytics: RevenueAnalytics,
    revenue_sharing: RevenueSharingConfig,
}

/// Revenue record
#[derive(Debug, Clone)]
pub struct RevenueRecord {
    pub record_id: String,
    pub transaction_type: TransactionType,
    pub amount: f64,
    pub currency: String,
    pub user_id: String,
    pub algorithm_id: Option<String>,
    pub timestamp: SystemTime,
    pub revenue_shares: Vec<RevenueShare>,
}

/// Transaction types
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum TransactionType {
    AlgorithmPurchase,
    SubscriptionPayment,
    UsageCharge,
    RefundIssued,
    RevenuePayout,
    CommissionEarned,
}

/// Revenue share
#[derive(Debug, Clone)]
pub struct RevenueShare {
    pub recipient_id: String,
    pub share_percentage: f64,
    pub amount: f64,
    pub share_type: ShareType,
}

/// Share types
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum ShareType {
    Author,
    Platform,
    Referrer,
    Partner,
    Infrastructure,
}

/// Revenue analytics
#[derive(Debug, Clone)]
pub struct RevenueAnalytics {
    pub total_revenue: f64,
    pub monthly_recurring_revenue: f64,
    pub annual_recurring_revenue: f64,
    pub average_revenue_per_user: f64,
    pub churn_rate: f64,
    pub customer_lifetime_value: f64,
    pub revenue_growth_rate: f64,
}

/// Revenue sharing configuration
#[derive(Debug, Clone)]
pub struct RevenueSharingConfig {
    pub platform_share: f64,
    pub author_share: f64,
    pub infrastructure_share: f64,
    pub marketing_share: f64,
    pub minimum_payout: f64,
}

/// Pricing engine
pub struct PricingEngine {
    pricing_strategies: Vec<Box<dyn PricingStrategy + Send + Sync>>,
    dynamic_pricing_config: DynamicPricingConfig,
    price_optimization: PriceOptimization,
}

/// Pricing strategy trait
pub trait PricingStrategy {
    fn calculate_price(&self, context: &PricingContext) -> DeviceResult<f64>;
    fn get_strategy_name(&self) -> String;
}

/// Pricing context
#[derive(Debug, Clone)]
pub struct PricingContext {
    pub algorithm_id: String,
    pub user_id: String,
    pub usage_history: Vec<UsageEvent>,
    pub market_conditions: MarketConditions,
    pub algorithm_performance: AlgorithmPerformanceMetrics,
}

/// Usage event
#[derive(Debug, Clone)]
pub struct UsageEvent {
    pub event_type: UsageEventType,
    pub timestamp: SystemTime,
    pub resource_consumption: ResourceConsumption,
    pub cost: f64,
}

/// Usage event types
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum UsageEventType {
    AlgorithmExecution,
    DataProcessing,
    StorageAccess,
    NetworkTransfer,
    QuantumComputation,
}

/// Resource consumption
#[derive(Debug, Clone)]
pub struct ResourceConsumption {
    pub cpu_hours: f64,
    pub memory_gb_hours: f64,
    pub storage_gb: f64,
    pub network_gb: f64,
    pub quantum_volume: f64,
}

/// Market conditions
#[derive(Debug, Clone)]
pub struct MarketConditions {
    pub demand_level: DemandLevel,
    pub supply_availability: f64,
    pub competitor_pricing: Vec<f64>,
    pub seasonal_factor: f64,
}

/// Demand levels
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum DemandLevel {
    Low,
    Normal,
    High,
    Peak,
}

/// Algorithm performance metrics for pricing
#[derive(Debug, Clone)]
pub struct AlgorithmPerformanceMetrics {
    pub accuracy: f64,
    pub execution_time: Duration,
    pub resource_efficiency: f64,
    pub user_satisfaction: f64,
    pub quantum_advantage: f64,
}

/// Dynamic pricing configuration
#[derive(Debug, Clone)]
pub struct DynamicPricingConfig {
    pub enabled: bool,
    pub price_adjustment_frequency: Duration,
    pub max_price_increase: f64,
    pub max_price_decrease: f64,
    pub demand_sensitivity: f64,
    pub supply_sensitivity: f64,
}

/// Price optimization
pub struct PriceOptimization {
    optimization_models: Vec<OptimizationModel>,
    price_experiments: Vec<PriceExperiment>,
    revenue_impact_analysis: RevenueImpactAnalysis,
}

/// Optimization model
#[derive(Debug, Clone)]
pub struct OptimizationModel {
    pub model_type: String,
    pub parameters: Vec<f64>,
    pub performance_metrics: ModelPerformanceMetrics,
    pub last_trained: SystemTime,
}

/// Model performance metrics
#[derive(Debug, Clone)]
pub struct ModelPerformanceMetrics {
    pub accuracy: f64,
    pub precision: f64,
    pub recall: f64,
    pub revenue_improvement: f64,
}

/// Price experiment
#[derive(Debug, Clone)]
pub struct PriceExperiment {
    pub experiment_id: String,
    pub experiment_type: ExperimentType,
    pub control_price: f64,
    pub test_price: f64,
    pub start_date: SystemTime,
    pub end_date: SystemTime,
    pub results: ExperimentResults,
}

/// Experiment types
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum ExperimentType {
    ABTest,
    MultiVariate,
    Cohort,
    Gradual,
}

/// Experiment results
#[derive(Debug, Clone)]
pub struct ExperimentResults {
    pub conversion_rate_control: f64,
    pub conversion_rate_test: f64,
    pub revenue_control: f64,
    pub revenue_test: f64,
    pub statistical_significance: f64,
}

/// Revenue impact analysis
#[derive(Debug)]
pub struct RevenueImpactAnalysis {
    price_elasticity: HashMap<String, f64>,
    demand_forecasts: Vec<DemandForecast>,
    revenue_projections: Vec<RevenueProjection>,
}

/// Demand forecast
#[derive(Debug, Clone)]
pub struct DemandForecast {
    pub algorithm_id: String,
    pub forecast_period: Duration,
    pub predicted_demand: f64,
    pub confidence_interval: (f64, f64),
    pub forecast_accuracy: f64,
}

/// Revenue projection
#[derive(Debug, Clone)]
pub struct RevenueProjection {
    pub projection_period: Duration,
    pub projected_revenue: f64,
    pub revenue_scenarios: Vec<RevenueScenario>,
}

/// Revenue scenario
#[derive(Debug, Clone)]
pub struct RevenueScenario {
    pub scenario_name: String,
    pub probability: f64,
    pub projected_revenue: f64,
    pub key_assumptions: Vec<String>,
}

impl MonetizationSystem {
    /// Create a new monetization system
    pub fn new(config: &MonetizationConfig) -> DeviceResult<Self> {
        Ok(Self {
            config: config.clone(),
            payment_processors: vec![],
            subscription_manager: SubscriptionManager::new(),
            revenue_tracker: RevenueTracker::new(),
            pricing_engine: PricingEngine::new()?,
        })
    }

    /// Initialize the monetization system
    pub async fn initialize(&self) -> DeviceResult<()> {
        // Initialize payment processors and other components
        Ok(())
    }
}

impl SubscriptionManager {
    fn new() -> Self {
        Self {
            active_subscriptions: HashMap::new(),
            subscription_plans: HashMap::new(),
            billing_cycles: vec![],
        }
    }
}

impl RevenueTracker {
    const fn new() -> Self {
        Self {
            revenue_records: vec![],
            revenue_analytics: RevenueAnalytics {
                total_revenue: 0.0,
                monthly_recurring_revenue: 0.0,
                annual_recurring_revenue: 0.0,
                average_revenue_per_user: 0.0,
                churn_rate: 0.0,
                customer_lifetime_value: 0.0,
                revenue_growth_rate: 0.0,
            },
            revenue_sharing: RevenueSharingConfig {
                platform_share: 0.30,
                author_share: 0.60,
                infrastructure_share: 0.05,
                marketing_share: 0.05,
                minimum_payout: 10.0,
            },
        }
    }
}

impl PricingEngine {
    fn new() -> DeviceResult<Self> {
        Ok(Self {
            pricing_strategies: vec![],
            dynamic_pricing_config: DynamicPricingConfig {
                enabled: false,
                price_adjustment_frequency: Duration::from_secs(3600),
                max_price_increase: 0.20,
                max_price_decrease: 0.30,
                demand_sensitivity: 0.15,
                supply_sensitivity: 0.10,
            },
            price_optimization: PriceOptimization {
                optimization_models: vec![],
                price_experiments: vec![],
                revenue_impact_analysis: RevenueImpactAnalysis {
                    price_elasticity: HashMap::new(),
                    demand_forecasts: vec![],
                    revenue_projections: vec![],
                },
            },
        })
    }
}