#![allow(dead_code, unused_variables, unused_mut)]

use criterion::{BenchmarkId, Criterion, black_box, criterion_group, criterion_main};
use std::collections::HashMap;
use std::fs;
use std::time::{SystemTime, UNIX_EPOCH};
use tempfile::TempDir;

/// Benchmark health monitoring operations
fn bench_health_monitoring(c: &mut Criterion) {
    let mut group = c.benchmark_group("health_monitoring");

    group.bench_function("full_system_scan_10_agents", |b| {
        // Setup: Create mock system with 10 agents
        let agents: Vec<Agent> = (0..10)
            .map(|i| Agent {
                id: format!("agent_{}", i),
                trust_level: 0.8,
                last_seen: SystemTime::now()
                    .duration_since(UNIX_EPOCH)
                    .unwrap()
                    .as_secs(),
                status: AgentStatus::Healthy,
            })
            .collect();

        b.iter(|| {
            // Simulate full system scan
            let mut health_scores = HashMap::new();
            for agent in &agents {
                let health = calculate_agent_health(agent);
                health_scores.insert(agent.id.clone(), health);
            }
            let system_health = calculate_system_health(&health_scores);
            black_box(system_health);
        });
    });

    group.bench_function("full_system_scan_100_agents", |b| {
        let agents: Vec<Agent> = (0..100)
            .map(|i| Agent {
                id: format!("agent_{}", i),
                trust_level: 0.8,
                last_seen: SystemTime::now()
                    .duration_since(UNIX_EPOCH)
                    .unwrap()
                    .as_secs(),
                status: AgentStatus::Healthy,
            })
            .collect();

        b.iter(|| {
            let mut health_scores = HashMap::new();
            for agent in &agents {
                let health = calculate_agent_health(agent);
                health_scores.insert(agent.id.clone(), health);
            }
            let system_health = calculate_system_health(&health_scores);
            black_box(system_health);
        });
    });

    group.bench_function("health_check_1000hz_frequency", |b| {
        let agent = Agent {
            id: "test_agent".to_string(),
            trust_level: 0.9,
            last_seen: SystemTime::now()
                .duration_since(UNIX_EPOCH)
                .unwrap()
                .as_secs(),
            status: AgentStatus::Healthy,
        };

        b.iter(|| {
            // Simulate high-frequency health check
            let health = calculate_agent_health(&agent);
            black_box(health);
        });
    });

    group.finish();
}

/// Benchmark trust level evaluation
fn bench_trust_evaluation(c: &mut Criterion) {
    let mut group = c.benchmark_group("trust_evaluation");

    group.bench_function("evaluate_single_agent_trust", |b| {
        let agent = Agent {
            id: "agent_1".to_string(),
            trust_level: 0.8,
            last_seen: SystemTime::now()
                .duration_since(UNIX_EPOCH)
                .unwrap()
                .as_secs(),
            status: AgentStatus::Healthy,
        };

        b.iter(|| {
            let trust_score = evaluate_agent_trust(&agent);
            black_box(trust_score);
        });
    });

    group.bench_function("evaluate_trust_50_agents", |b| {
        let agents: Vec<Agent> = (0..50)
            .map(|i| Agent {
                id: format!("agent_{}", i),
                trust_level: 0.8,
                last_seen: SystemTime::now()
                    .duration_since(UNIX_EPOCH)
                    .unwrap()
                    .as_secs(),
                status: AgentStatus::Healthy,
            })
            .collect();

        b.iter(|| {
            let trust_scores: HashMap<String, f64> = agents
                .iter()
                .map(|a| (a.id.clone(), evaluate_agent_trust(a)))
                .collect();
            black_box(trust_scores);
        });
    });

    group.bench_function("evaluate_trust_with_history", |b| {
        let mut agent = Agent {
            id: "agent_1".to_string(),
            trust_level: 0.8,
            last_seen: SystemTime::now()
                .duration_since(UNIX_EPOCH)
                .unwrap()
                .as_secs(),
            status: AgentStatus::Healthy,
        };

        // Simulate trust history
        let trust_history: Vec<f64> = (0..100).map(|i| 0.7 + (i as f64 * 0.003)).collect();

        b.iter(|| {
            let trust_score = evaluate_agent_trust_with_history(&agent, &trust_history);
            black_box(trust_score);
        });
    });

    group.finish();
}

/// Benchmark violation detection
fn bench_violation_detection(c: &mut Criterion) {
    let mut group = c.benchmark_group("violation_detection");

    group.bench_function("detect_read_only_violation", |b| {
        let operation = Operation {
            agent_id: "agent_1".to_string(),
            op_type: OpType::Write,
            target: "/read/only/path".to_string(),
            timestamp: SystemTime::now()
                .duration_since(UNIX_EPOCH)
                .unwrap()
                .as_secs(),
        };

        let read_only_paths = vec!["/read/only/path".to_string()];

        b.iter(|| {
            let is_violation = detect_read_only_violation(&operation, &read_only_paths);
            black_box(is_violation);
        });
    });

    group.bench_function("detect_state_inconsistency", |b| {
        let state_a = SystemState {
            agent_count: 10,
            active_tasks: 5,
            timestamp: SystemTime::now()
                .duration_since(UNIX_EPOCH)
                .unwrap()
                .as_secs(),
        };

        let state_b = SystemState {
            agent_count: 10,
            active_tasks: 6, // Inconsistent
            timestamp: SystemTime::now()
                .duration_since(UNIX_EPOCH)
                .unwrap()
                .as_secs(),
        };

        b.iter(|| {
            let inconsistency = detect_state_inconsistency(&state_a, &state_b);
            black_box(inconsistency);
        });
    });

    group.bench_function("violation_detection_pipeline", |b| {
        let operations: Vec<Operation> = (0..100)
            .map(|i| Operation {
                agent_id: format!("agent_{}", i % 10),
                op_type: if i % 7 == 0 {
                    OpType::Write
                } else {
                    OpType::Read
                },
                target: format!("/path/{}", i),
                timestamp: SystemTime::now()
                    .duration_since(UNIX_EPOCH)
                    .unwrap()
                    .as_secs(),
            })
            .collect();

        let read_only_paths = vec!["/path/7".to_string(), "/path/14".to_string()];

        b.iter(|| {
            let violations: Vec<&Operation> = operations
                .iter()
                .filter(|op| detect_read_only_violation(op, &read_only_paths))
                .collect();
            black_box(violations.len());
        });
    });

    group.finish();
}

/// Benchmark event-driven responses
fn bench_event_responses(c: &mut Criterion) {
    let mut group = c.benchmark_group("event_responses");

    group.bench_function("process_single_event", |b| {
        let event = SystemEvent {
            event_type: EventType::AgentJoined,
            agent_id: "agent_1".to_string(),
            payload: "{}".to_string(),
            timestamp: SystemTime::now()
                .duration_since(UNIX_EPOCH)
                .unwrap()
                .as_secs(),
        };

        b.iter(|| {
            let response = process_event(&event);
            black_box(response);
        });
    });

    group.bench_function("process_event_pipeline_100_events", |b| {
        let events: Vec<SystemEvent> = (0..100)
            .map(|i| SystemEvent {
                event_type: if i % 3 == 0 {
                    EventType::HealthAlert
                } else if i % 3 == 1 {
                    EventType::TrustViolation
                } else {
                    EventType::AgentJoined
                },
                agent_id: format!("agent_{}", i % 20),
                payload: format!("{{\"index\":{}}}", i),
                timestamp: SystemTime::now()
                    .duration_since(UNIX_EPOCH)
                    .unwrap()
                    .as_secs(),
            })
            .collect();

        b.iter(|| {
            let responses: Vec<Response> = events.iter().map(process_event).collect();
            black_box(responses);
        });
    });

    group.bench_function("schedule_workflow_response", |b| {
        let trigger = WorkflowTrigger {
            condition: "trust < 0.5".to_string(),
            action: "quarantine_agent".to_string(),
            priority: 1,
        };

        let context = TriggerContext {
            agent_trust: 0.4,
            system_load: 0.6,
        };

        b.iter(|| {
            let scheduled = evaluate_and_schedule(&trigger, &context);
            black_box(scheduled);
        });
    });

    group.finish();
}

/// Benchmark context budget operations
fn bench_context_budget(c: &mut Criterion) {
    let mut group = c.benchmark_group("context_budget");

    group.bench_function("update_budget", |b| {
        let mut budget = ContextBudget {
            agent_id: "agent_1".to_string(),
            total_tokens: 10000,
            used_tokens: 5000,
            last_updated: SystemTime::now()
                .duration_since(UNIX_EPOCH)
                .unwrap()
                .as_secs(),
        };

        b.iter(|| {
            budget.used_tokens += 100;
            budget.last_updated = SystemTime::now()
                .duration_since(UNIX_EPOCH)
                .unwrap()
                .as_secs();
            black_box(&budget);
        });
    });

    group.bench_function("check_budget_exhaustion", |b| {
        let budget = ContextBudget {
            agent_id: "agent_1".to_string(),
            total_tokens: 10000,
            used_tokens: 9500,
            last_updated: 0,
        };

        b.iter(|| {
            let exhausted = is_budget_exhausted(&budget, 0.95);
            black_box(exhausted);
        });
    });

    group.bench_function("enforce_budget_50_agents", |b| {
        let budgets: Vec<ContextBudget> = (0..50)
            .map(|i| ContextBudget {
                agent_id: format!("agent_{}", i),
                total_tokens: 10000,
                used_tokens: (i * 200) as u64,
                last_updated: 0,
            })
            .collect();

        b.iter(|| {
            let violations: Vec<&ContextBudget> = budgets
                .iter()
                .filter(|b| is_budget_exhausted(b, 0.95))
                .collect();
            black_box(violations);
        });
    });

    group.finish();
}

/// Benchmark archive management
fn bench_archive_management(c: &mut Criterion) {
    let mut group = c.benchmark_group("archive_management");

    group.bench_function("archive_small_session", |b| {
        b.iter(|| {
            let temp_dir = TempDir::new().unwrap();
            let session_dir = temp_dir.path().join("session");
            let archive_dir = temp_dir.path().join("archives");

            fs::create_dir_all(&session_dir).unwrap();
            fs::create_dir_all(&archive_dir).unwrap();

            // Create session data
            fs::write(session_dir.join("context.json"), "{\"tokens\":1000}").unwrap();
            fs::write(session_dir.join("state.json"), "{\"active\":true}").unwrap();

            // Simulate archive
            let archive_path = archive_dir.join("session.tar");
            fs::copy(session_dir.join("context.json"), &archive_path).unwrap();

            black_box(archive_path);
        });
    });

    group.bench_function("archive_large_session", |b| {
        b.iter(|| {
            let temp_dir = TempDir::new().unwrap();
            let session_dir = temp_dir.path().join("session");
            let archive_dir = temp_dir.path().join("archives");

            fs::create_dir_all(&session_dir).unwrap();
            fs::create_dir_all(&archive_dir).unwrap();

            // Create large session data (100 files)
            for i in 0..100 {
                fs::write(
                    session_dir.join(format!("file_{}.json", i)),
                    format!("{{\"data\":\"{}}}", "x".repeat(1000)),
                )
                .unwrap();
            }

            let archive_path = archive_dir.join("session.tar");
            black_box(archive_path);
        });
    });

    group.bench_function("restore_session", |b| {
        b.iter(|| {
            let temp_dir = TempDir::new().unwrap();
            let archive_dir = temp_dir.path().join("archives");
            let restore_dir = temp_dir.path().join("restored");

            fs::create_dir_all(&archive_dir).unwrap();
            fs::create_dir_all(&restore_dir).unwrap();

            // Create archive
            let archive_path = archive_dir.join("session.tar");
            fs::write(&archive_path, "archived session data").unwrap();

            // Simulate restore
            let restored_path = restore_dir.join("session.json");
            fs::copy(&archive_path, &restored_path).unwrap();

            black_box(restored_path);
        });
    });

    group.finish();
}

/// Benchmark concurrent system operations
fn bench_concurrent_system_ops(c: &mut Criterion) {
    let mut group = c.benchmark_group("concurrent_system_ops");

    for concurrency in [10, 25, 50].iter() {
        group.bench_with_input(
            BenchmarkId::new("concurrent_health_checks", concurrency),
            concurrency,
            |b, &concurrency| {
                let agents: Vec<Agent> = (0..concurrency)
                    .map(|i| Agent {
                        id: format!("agent_{}", i),
                        trust_level: 0.8,
                        last_seen: SystemTime::now()
                            .duration_since(UNIX_EPOCH)
                            .unwrap()
                            .as_secs(),
                        status: AgentStatus::Healthy,
                    })
                    .collect();

                b.iter(|| {
                    let handles: Vec<_> = agents
                        .clone()
                        .into_iter()
                        .map(|agent| {
                            std::thread::spawn(move || {
                                let health = calculate_agent_health(&agent);
                                black_box(health);
                            })
                        })
                        .collect();

                    for handle in handles {
                        handle.join().unwrap();
                    }
                });
            },
        );
    }

    group.finish();
}

// Mock structures for benchmarking
#[derive(Debug, Clone)]
struct Agent {
    id: String,
    trust_level: f64,
    last_seen: u64,
    status: AgentStatus,
}

#[derive(Debug, Clone)]
enum AgentStatus {
    Healthy,
    Degraded,
    Unhealthy,
}

#[derive(Debug)]
struct Operation {
    agent_id: String,
    op_type: OpType,
    target: String,
    timestamp: u64,
}

#[derive(Debug)]
enum OpType {
    Read,
    Write,
}

#[derive(Debug)]
struct SystemState {
    agent_count: u32,
    active_tasks: u32,
    timestamp: u64,
}

#[derive(Debug)]
struct SystemEvent {
    event_type: EventType,
    agent_id: String,
    payload: String,
    timestamp: u64,
}

#[derive(Debug)]
enum EventType {
    AgentJoined,
    HealthAlert,
    TrustViolation,
}

#[derive(Debug)]
struct Response {
    action: String,
    success: bool,
}

#[derive(Debug)]
struct WorkflowTrigger {
    condition: String,
    action: String,
    priority: u32,
}

#[derive(Debug)]
struct TriggerContext {
    agent_trust: f64,
    system_load: f64,
}

#[derive(Debug)]
struct ContextBudget {
    agent_id: String,
    total_tokens: u64,
    used_tokens: u64,
    last_updated: u64,
}

fn calculate_agent_health(agent: &Agent) -> f64 {
    let base_health = match agent.status {
        AgentStatus::Healthy => 1.0,
        AgentStatus::Degraded => 0.7,
        AgentStatus::Unhealthy => 0.4,
    };

    let time_factor = 0.95; // Simulate time decay
    base_health * time_factor
}

fn calculate_system_health(health_scores: &HashMap<String, f64>) -> f64 {
    if health_scores.is_empty() {
        return 1.0;
    }

    let sum: f64 = health_scores.values().sum();
    sum / health_scores.len() as f64
}

fn evaluate_agent_trust(agent: &Agent) -> f64 {
    // Simple trust calculation based on trust_level
    agent.trust_level * 0.9 + 0.1 // Small boost for active agents
}

fn evaluate_agent_trust_with_history(agent: &Agent, history: &[f64]) -> f64 {
    let recent_avg: f64 =
        history.iter().rev().take(10).sum::<f64>() / 10.0f64.min(history.len() as f64);
    (agent.trust_level + recent_avg) / 2.0
}

fn detect_read_only_violation(operation: &Operation, read_only_paths: &[String]) -> bool {
    if matches!(operation.op_type, OpType::Read) {
        return false;
    }

    read_only_paths
        .iter()
        .any(|path| operation.target.starts_with(path))
}

fn detect_state_inconsistency(state_a: &SystemState, state_b: &SystemState) -> Option<String> {
    if state_a.agent_count != state_b.agent_count {
        return Some("Agent count mismatch".to_string());
    }
    if state_a.active_tasks != state_b.active_tasks {
        return Some("Task count mismatch".to_string());
    }
    None
}

fn process_event(event: &SystemEvent) -> Response {
    let action = match event.event_type {
        EventType::AgentJoined => "welcome_agent",
        EventType::HealthAlert => "trigger_health_check",
        EventType::TrustViolation => "quarantine_agent",
    };

    Response {
        action: action.to_string(),
        success: true,
    }
}

fn evaluate_and_schedule(trigger: &WorkflowTrigger, context: &TriggerContext) -> bool {
    if trigger.condition.contains("trust") && context.agent_trust < 0.5 {
        return true; // Schedule the workflow
    }
    false
}

fn is_budget_exhausted(budget: &ContextBudget, threshold: f64) -> bool {
    let usage_ratio = budget.used_tokens as f64 / budget.total_tokens as f64;
    usage_ratio >= threshold
}

criterion_group!(
    benches,
    bench_health_monitoring,
    bench_trust_evaluation,
    bench_violation_detection,
    bench_event_responses,
    bench_context_budget,
    bench_archive_management,
    bench_concurrent_system_ops
);
criterion_main!(benches);
