//! # SciRS2 Ecosystem Integration Testing Demo
//!
//! This example demonstrates the comprehensive ecosystem integration testing framework
//! designed for validating 1.0 release readiness across all scirs2-* modules.
//!
//! The ecosystem integration testing framework provides:
//! - Automatic module discovery and analysis
//! - Cross-module compatibility validation
//! - Performance benchmarking and regression detection
//! - API stability verification for 1.0 release
//! - Production readiness assessment
//! - Long-term stability guarantees validation
//!
//! ## Usage
//!
//! ```bash
//! cargo run --example ecosystem_integration_demo --features testing,parallel,random
//! ```

use scirs2_core::error::CoreResult;
use scirs2_core::testing::ecosystem_integration::{
    create_ecosystem_test_suite, ApiComplianceLevel, DeploymentTarget, EcosystemTestConfig,
    EcosystemTestResult, EcosystemTestRunner,
};
use std::collections::HashSet;
use std::path::PathBuf;

#[allow(dead_code)]
fn main() -> CoreResult<()> {
    println!("🚀 SciRS2 Ecosystem Integration Testing Demo - 1.0 Release Readiness");
    println!("=====================================================================");

    // Configure ecosystem testing for comprehensive validation
    // Use environment variable or current directory for workspace path
    let workspace_path = std::env::var("SCIRS2_WORKSPACE_PATH")
        .map(PathBuf::from)
        .unwrap_or_else(|_| std::env::current_dir().unwrap_or_else(|_| PathBuf::from(".")));

    let config = EcosystemTestConfig {
        workspace_path,
        auto_discover_modules: true,
        included_modules: HashSet::new(), // Include all discovered modules
        excluded_modules: {
            let mut excluded = HashSet::new();
            excluded.insert("target".to_string()); // Exclude build artifacts
            excluded
        },
        test_performance: true,
        test_api_stability: true,
        test_production_readiness: true,
        test_long_term_stability: true,
        max_performance_degradation: 5.0, // Strict 5% limit for 1.0
        min_modules_required: 15,         // Expect at least 15 modules for a complete ecosystem
        api_compliance_level: ApiComplianceLevel::Stable,
        deployment_targets: vec![
            DeploymentTarget::Linux,
            DeploymentTarget::MacOS,
            DeploymentTarget::Windows,
            DeploymentTarget::X86_64,
            DeploymentTarget::ARM64,
        ],
        ..Default::default()
    };

    // Create and run the ecosystem test runner
    println!("\n📊 Initializing Ecosystem Test Runner...");
    let ecosystem_runner = EcosystemTestRunner::new(config.clone());

    println!("🔍 Discovering SciRS2 modules in workspace...");
    println!("⚡ Running comprehensive ecosystem validation...");
    println!("   This includes:");
    println!("   • Module discovery and build validation");
    println!("   • Cross-module compatibility matrix");
    println!("   • Performance benchmarking");
    println!("   • API stability verification");
    println!("   • Production readiness assessment");
    println!("   • Long-term stability validation");

    // Run the comprehensive ecosystem tests
    let start_time = std::time::Instant::now();
    match ecosystem_runner.run_ecosystem_tests() {
        Ok(result) => {
            let duration = start_time.elapsed();

            println!(
                "\n✅ Ecosystem Integration Testing Completed in {:?}",
                duration
            );
            println!("═══════════════════════════════════════════════════════");

            // Display summary results
            display_ecosystem_summary(&result);

            // Generate and display comprehensive report
            println!("\n📋 Generating Comprehensive Ecosystem Report...");
            match ecosystem_runner.generate_ecosystem_report() {
                Ok(report) => {
                    println!("\n{}", report);
                }
                Err(e) => {
                    println!("⚠️  Failed to generate report: {:?}", e);
                }
            }

            // Display final assessment
            display_release_assessment(&result);
        }
        Err(e) => {
            println!("\n❌ Ecosystem Integration Testing Failed: {:?}", e);
            return Err(e);
        }
    }

    // Demonstrate test suite usage
    println!("\n🧪 Running Ecosystem Test Suite...");
    match create_ecosystem_test_suite(config) {
        Ok(suite) => match suite.run() {
            Ok(results) => {
                let passed = results.iter().filter(|r| r.passed).count();
                let total = results.len();
                println!("✅ Test Suite Results: {}/{} tests passed", passed, total);

                for (i, result) in results.iter().enumerate() {
                    let status = if result.passed { "✅" } else { "❌" };
                    println!(
                        "   {} Test {}: {} ({:?})",
                        status,
                        i + 1,
                        if result.passed { "PASSED" } else { "FAILED" },
                        result.duration
                    );

                    if let Some(error) = &result.error {
                        println!("      Error: {}", error);
                    }
                }
            }
            Err(e) => {
                println!("❌ Test suite execution failed: {:?}", e);
            }
        },
        Err(e) => {
            println!("❌ Failed to create test suite: {:?}", e);
        }
    }

    println!("\n🎯 Ecosystem Integration Testing Demo Complete!");
    Ok(())
}

/// Display ecosystem summary results
#[allow(dead_code)]
fn display_ecosystem_summary(result: &EcosystemTestResult) {
    println!("📈 ECOSYSTEM HEALTH SUMMARY");
    println!("   Overall Health Score: {:.1}/100", result.health_score);
    println!("   Modules Discovered: {}", result.discovered_modules.len());

    let building_modules = result
        .discovered_modules
        .iter()
        .filter(|m| m.build_status.builds)
        .count();
    println!(
        "   Modules Building: {}/{}",
        building_modules,
        result.discovered_modules.len()
    );

    let testing_modules = result
        .discovered_modules
        .iter()
        .filter(|m| m.build_status.tests_pass)
        .count();
    println!(
        "   Modules Passing Tests: {}/{}",
        testing_modules,
        result.discovered_modules.len()
    );

    println!("\n🔗 COMPATIBILITY ANALYSIS");
    if !result.compatibilitymatrix.failed_pairs.is_empty() {
        println!(
            "   ❌ Failed Compatibility Pairs: {}",
            result.compatibilitymatrix.failed_pairs.len()
        );
        for (mod1, mod2, reason) in &result.compatibilitymatrix.failed_pairs {
            println!("      • {} ↔ {}: {}", mod1, mod2, reason);
        }
    } else {
        println!("   ✅ All module pairs compatible");
    }

    if !result.compatibilitymatrix.warning_pairs.is_empty() {
        println!(
            "   ⚠️  Warning Compatibility Pairs: {}",
            result.compatibilitymatrix.warning_pairs.len()
        );
    }

    println!("\n⚡ PERFORMANCE METRICS");
    if !result.performance_results.module_performance.is_empty() {
        let avg_perf: f64 = result
            .performance_results
            .module_performance
            .values()
            .map(|p| p.performance_score)
            .sum::<f64>()
            / result.performance_results.module_performance.len() as f64;
        println!("   Average Module Performance: {:.1}/100", avg_perf);
    }

    println!(
        "   Memory Efficiency: {:.1}%",
        result
            .performance_results
            .memory_efficiency
            .fragmentation_score
            * 100.0
    );
    println!(
        "   Thread Scalability: {:.1}%",
        result
            .performance_results
            .scalability_metrics
            .thread_scalability
            * 100.0
    );

    println!("\n🔒 API STABILITY");
    println!("   Stable APIs: {}", result.api_stability.stable_apis);
    println!(
        "   API Coverage: {:.1}%",
        result.api_stability.api_coverage * 100.0
    );
    println!(
        "   API Frozen: {}",
        if result.api_stability.api_freeze_status.frozen {
            "✅ YES"
        } else {
            "❌ NO"
        }
    );
    println!(
        "   SemVer Compliant: {}",
        if result.api_stability.semver_compliance.compliant {
            "✅ YES"
        } else {
            "❌ NO"
        }
    );

    if !result.api_stability.breakingchanges.is_empty() {
        println!(
            "   ⚠️  Breaking Changes: {}",
            result.api_stability.breakingchanges.len()
        );
    }

    println!("\n🏭 PRODUCTION READINESS");
    println!(
        "   Overall Score: {:.1}/100",
        result.production_readiness.readiness_score
    );
    println!(
        "   Security: {:.1}/100",
        result.production_readiness.security_assessment.score
    );
    println!(
        "   Performance: {:.1}/100",
        result.production_readiness.performance_assessment.score
    );
    println!(
        "   Reliability: {:.1}/100",
        result.production_readiness.reliability_assessment.score
    );
    println!(
        "   Documentation: {:.1}/100",
        result.production_readiness.documentation_assessment.score
    );
    println!(
        "   Deployment: {:.1}/100",
        result.production_readiness.deployment_readiness.score
    );

    println!("\n🛡️ LONG-TERM STABILITY");
    println!(
        "   Stability Score: {:.1}/100",
        result.long_term_stability.stability_score
    );
    println!(
        "   LTS Available: {}",
        if result
            .long_term_stability
            .maintenance_strategy
            .lts_available
        {
            "✅ YES"
        } else {
            "❌ NO"
        }
    );
    println!(
        "   Plugin Architecture: {}",
        if result
            .long_term_stability
            .forward_compatibility
            .plugin_architecture
        {
            "✅ YES"
        } else {
            "❌ NO"
        }
    );
}

/// Display final 1.0 release assessment
#[allow(dead_code)]
fn display_release_assessment(result: &EcosystemTestResult) {
    println!("\n🎯 1.0 RELEASE READINESS ASSESSMENT");
    println!("═══════════════════════════════════════");

    let readiness = &result.release_readiness;

    println!(
        "🏆 OVERALL STATUS: {}",
        if readiness.ready_for_release {
            "✅ READY FOR 1.0 RELEASE"
        } else {
            "❌ NOT READY FOR 1.0 RELEASE"
        }
    );

    println!("📊 Readiness Score: {:.1}/100", readiness.readiness_score);
    println!("⏰ Timeline: {}", readiness.timeline_assessment);

    if !readiness.blocking_issues.is_empty() {
        println!(
            "\n🚨 BLOCKING ISSUES ({}):",
            readiness.blocking_issues.len()
        );
        for (i, issue) in readiness.blocking_issues.iter().enumerate() {
            println!("   {}. {}", i + 1, issue);
        }
    }

    if !readiness.warning_issues.is_empty() {
        println!("\n⚠️  WARNING ISSUES ({}):", readiness.warning_issues.len());
        for (i, issue) in readiness.warning_issues.iter().enumerate() {
            println!("   {}. {}", i + 1, issue);
        }
    }

    if !readiness.recommendations.is_empty() {
        println!(
            "\n💡 RECOMMENDATIONS ({}):",
            readiness.recommendations.len()
        );
        for (i, rec) in readiness.recommendations.iter().enumerate() {
            println!("   {}. {}", i + 1, rec);
        }
    }

    // Display module breakdown
    println!("\n📦 MODULE BREAKDOWN");
    let mut module_types = std::collections::HashMap::new();
    for module in &result.discovered_modules {
        *module_types
            .entry(format!("{:?}", module.module_type))
            .or_insert(0) += 1;
    }

    for (module_type, count) in module_types {
        println!("   {}: {}", module_type, count);
    }

    // Display success criteria met
    println!("\n✅ SUCCESS CRITERIA");
    println!(
        "   Health Score ≥ 80: {}",
        if result.health_score >= 80.0 {
            "✅"
        } else {
            "❌"
        }
    );
    println!(
        "   Production Ready ≥ 75: {}",
        if result.production_readiness.readiness_score >= 75.0 {
            "✅"
        } else {
            "❌"
        }
    );
    println!(
        "   API Stable: {}",
        if result.api_stability.api_freeze_status.frozen {
            "✅"
        } else {
            "❌"
        }
    );
    println!(
        "   No Blocking Issues: {}",
        if readiness.blocking_issues.is_empty() {
            "✅"
        } else {
            "❌"
        }
    );

    if readiness.ready_for_release {
        println!("\n🎉 CONGRATULATIONS! 🎉");
        println!("The SciRS2 ecosystem is ready for the 1.0 release!");
        println!("All critical requirements have been met.");
    } else {
        println!("\n🔧 ACTION REQUIRED");
        println!("Please address the blocking issues before proceeding with 1.0 release.");
        println!("The ecosystem shows strong potential and is close to release readiness.");
    }
}

/// Demonstrate specific ecosystem features
#[allow(dead_code)]
fn demonstrate_ecosystem_features() {
    println!("\n🔧 ECOSYSTEM INTEGRATION FEATURES");
    println!("===================================");

    println!("✨ Automatic Module Discovery:");
    println!("   • Scans workspace for scirs2-* modules");
    println!("   • Analyzes Cargo.toml and dependencies");
    println!("   • Classifies modules by type and functionality");

    println!("\n🔗 Compatibility Matrix:");
    println!("   • Tests all module pair combinations");
    println!("   • Validates version compatibility");
    println!("   • Checks feature and dependency alignment");

    println!("\n⚡ Performance Validation:");
    println!("   • Benchmarks individual module performance");
    println!("   • Tests cross-module operation efficiency");
    println!("   • Validates memory usage and scalability");

    println!("\n🔒 API Stability Verification:");
    println!("   • Ensures API freeze for 1.0 release");
    println!("   • Detects breaking changes");
    println!("   • Validates semantic versioning compliance");

    println!("\n🏭 Production Readiness:");
    println!("   • Security assessment and vulnerability scanning");
    println!("   • Performance regression detection");
    println!("   • Reliability and error handling validation");
    println!("   • Documentation completeness verification");

    println!("\n🛡️ Long-term Stability:");
    println!("   • API evolution strategy validation");
    println!("   • Backward compatibility guarantees");
    println!("   • Maintenance and support planning");

    println!("\n📋 Comprehensive Reporting:");
    println!("   • Executive summary with key metrics");
    println!("   • Detailed module analysis");
    println!("   • Release readiness assessment");
    println!("   • Actionable recommendations");
}
