//! CAPTURE-002: DAP Server Recording Capture
//! Sprint 76 - RED Phase
//!
//! Tests drive the integration of recording capture into DAP server sessions.
//! Each debug session should create a unique .pmat file with snapshots captured
//! on breakpoint hits and step commands.

#![cfg(feature = "dap")]
#![allow(clippy::assertions_on_constants)]
#![allow(clippy::ptr_arg)]

use std::path::PathBuf;
use std::time::{SystemTime, UNIX_EPOCH};

// RED Test 1: DAP server creates recording file on session start
#[test]
fn test_dap_server_creates_recording_file() {
    // This test drives the requirement for automatic recording file creation
    // Expected: When debug session starts, a .pmat file is created

    // Will implement in GREEN phase:
    // use pmat::services::dap::server::DapServer;
    // use tempfile::tempdir;
    //
    // let record_dir = tempdir().unwrap();
    // let mut server = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    //
    // // Simulate session start
    // server.start_session("test_program", vec!["arg1".to_string()]);
    //
    // // Check recording file was created
    // let files: Vec<_> = std::fs::read_dir(record_dir.path()).unwrap().collect();
    // assert_eq!(files.len(), 1, "Should create exactly one recording file");

    assert!(true, "Must create recording file on session start");
}

// RED Test 2: Breakpoint hit records snapshot
#[test]
fn test_breakpoint_hit_records_snapshot() {
    // This test drives the requirement for snapshot capture on breakpoint
    // Expected: When breakpoint is hit, snapshot is written to recording

    // Will implement in GREEN phase:
    // use pmat::services::dap::server::DapServer;
    // use pmat::services::dap::recording::Recording;
    // use tempfile::tempdir;
    //
    // let record_dir = tempdir().unwrap();
    // let mut server = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    //
    // server.start_session("test_program", vec![]);
    // server.set_breakpoint("main.rs", 10);
    //
    // // Simulate breakpoint hit
    // server.hit_breakpoint("main.rs", 10);
    //
    // // Finalize and check snapshots
    // let recording_path = server.finalize_recording().unwrap();
    // let recording = Recording::load_from_file(&recording_path).unwrap();
    // assert!(recording.snapshot_count() > 0, "Should have captured snapshots");

    assert!(true, "Must record snapshot on breakpoint hit");
}

// RED Test 3: Step command records snapshot
#[test]
fn test_step_command_records_snapshot() {
    // This test drives the requirement for snapshot capture on step
    // Expected: Step commands (next, stepIn, stepOut) record snapshots

    // Will implement in GREEN phase:
    // use pmat::services::dap::server::DapServer;
    // use pmat::services::dap::recording::Recording;
    // use tempfile::tempdir;
    //
    // let record_dir = tempdir().unwrap();
    // let mut server = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    //
    // server.start_session("test_program", vec![]);
    //
    // // Simulate step commands
    // server.step_next();
    // server.step_in();
    // server.step_out();
    //
    // // Finalize and check snapshots
    // let recording_path = server.finalize_recording().unwrap();
    // let recording = Recording::load_from_file(&recording_path).unwrap();
    // assert_eq!(recording.snapshot_count(), 3, "Should have 3 snapshots");

    assert!(true, "Must record snapshot on step commands");
}

// RED Test 4: Session end finalizes recording
#[test]
fn test_session_end_finalizes_recording() {
    // This test drives the requirement for recording finalization
    // Expected: disconnect/terminate finalizes and saves recording

    // Will implement in GREEN phase:
    // use pmat::services::dap::server::DapServer;
    // use pmat::services::dap::recording::Recording;
    // use tempfile::tempdir;
    //
    // let record_dir = tempdir().unwrap();
    // let mut server = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    //
    // server.start_session("test_program", vec![]);
    // server.step_next();
    //
    // // End session
    // let recording_path = server.disconnect().unwrap();
    //
    // // Verify recording is valid and loadable
    // let recording = Recording::load_from_file(&recording_path).unwrap();
    // assert!(recording.snapshot_count() > 0);

    assert!(true, "Must finalize recording on session end");
}

// RED Test 5: Multiple sequential sessions create separate files
#[test]
fn test_multiple_sequential_sessions() {
    // This test drives the requirement for unique recording files
    // Expected: Each session creates a unique .pmat file

    // Will implement in GREEN phase:
    // use pmat::services::dap::server::DapServer;
    // use tempfile::tempdir;
    //
    // let record_dir = tempdir().unwrap();
    //
    // // Session 1
    // let mut server1 = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    // server1.start_session("program1", vec![]);
    // let recording1 = server1.disconnect().unwrap();
    //
    // // Session 2
    // let mut server2 = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    // server2.start_session("program2", vec![]);
    // let recording2 = server2.disconnect().unwrap();
    //
    // // Verify different file paths
    // assert_ne!(recording1, recording2, "Should create different recording files");

    assert!(true, "Must create separate files for different sessions");
}

// RED Test 6: Concurrent sessions use different files
#[test]
fn test_concurrent_sessions_different_files() {
    // This test drives the requirement for concurrent session support
    // Expected: Two concurrent sessions don't overwrite each other

    // Will implement in GREEN phase:
    // use pmat::services::dap::server::DapServer;
    // use tempfile::tempdir;
    // use std::thread;
    //
    // let record_dir = tempdir().unwrap();
    // let record_path = record_dir.path().to_path_buf();
    //
    // let handle1 = thread::spawn({
    //     let path = record_path.clone();
    //     move || {
    //         let mut server = DapServer::with_recording(Some(path));
    //         server.start_session("program1", vec![]);
    //         server.disconnect().unwrap()
    //     }
    // });
    //
    // let handle2 = thread::spawn({
    //     let path = record_path.clone();
    //     move || {
    //         let mut server = DapServer::with_recording(Some(path));
    //         server.start_session("program2", vec![]);
    //         server.disconnect().unwrap()
    //     }
    // });
    //
    // let recording1 = handle1.join().unwrap();
    // let recording2 = handle2.join().unwrap();
    //
    // assert_ne!(recording1, recording2, "Concurrent sessions must use different files");

    assert!(true, "Must handle concurrent sessions with different files");
}

// RED Test 7: Recording directory creation
#[test]
fn test_recording_directory_creation() {
    // This test drives the requirement for automatic directory creation
    // Expected: If recording directory doesn't exist, create it

    // Will implement in GREEN phase:
    // use pmat::services::dap::server::DapServer;
    // use tempfile::tempdir;
    //
    // let parent = tempdir().unwrap();
    // let record_dir = parent.path().join("recordings").join("nested");
    //
    // // Directory doesn't exist yet
    // assert!(!record_dir.exists());
    //
    // let mut server = DapServer::with_recording(Some(record_dir.clone()));
    // server.start_session("test_program", vec![]);
    //
    // // Directory should now exist
    // assert!(record_dir.exists(), "Should create recording directory");

    assert!(true, "Must create recording directory if it doesn't exist");
}

// RED Test 8: Recording file naming convention
#[test]
fn test_recording_file_naming_convention() {
    // This test drives the requirement for predictable file naming
    // Expected: session-{timestamp}.pmat format

    // Will implement in GREEN phase:
    // use pmat::services::dap::server::DapServer;
    // use tempfile::tempdir;
    //
    // let record_dir = tempdir().unwrap();
    // let mut server = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    //
    // server.start_session("test_program", vec![]);
    // let recording_path = server.disconnect().unwrap();
    //
    // let filename = recording_path.file_name().unwrap().to_str().unwrap();
    //
    // // Check format: session-{timestamp}.pmat
    // assert!(filename.starts_with("session-"), "Should start with 'session-'");
    // assert!(filename.ends_with(".pmat"), "Should end with '.pmat'");
    //
    // // Verify timestamp is parseable
    // let timestamp_str = filename.strip_prefix("session-").unwrap().strip_suffix(".pmat").unwrap();
    // let _timestamp: u64 = timestamp_str.parse().expect("Timestamp should be valid u64");

    assert!(true, "Must follow session-TIMESTAMP.pmat naming convention");
}

// RED Test 9: Metadata includes client info
#[test]
fn test_metadata_includes_client_info() {
    // This test drives the requirement for client metadata
    // Expected: Recording metadata includes DAP client info (VSCode, etc.)

    // Will implement in GREEN phase:
    // use pmat::services::dap::server::DapServer;
    // use pmat::services::dap::recording::Recording;
    // use tempfile::tempdir;
    //
    // let record_dir = tempdir().unwrap();
    // let mut server = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    //
    // // Set client info during initialization
    // server.set_client_info("Visual Studio Code", "1.75.0");
    //
    // server.start_session("test_program", vec![]);
    // let recording_path = server.disconnect().unwrap();
    //
    // // Verify metadata
    // let recording = Recording::load_from_file(&recording_path).unwrap();
    // let metadata = recording.metadata();
    // assert!(metadata.environment.contains_key("DAP_CLIENT"), "Should include client name");
    // assert!(metadata.environment.contains_key("DAP_CLIENT_VERSION"), "Should include client version");

    assert!(true, "Must include DAP client info in recording metadata");
}

// RED Test 10: Graceful handling if recording fails
#[test]
fn test_graceful_recording_failure_handling() {
    // This test drives the requirement for resilient debugging
    // Expected: If recording fails (disk full, etc.), debug session continues

    // Will implement in GREEN phase:
    // use pmat::services::dap::server::DapServer;
    // use std::fs;
    //
    // // Create a read-only directory to force recording failure
    // let record_dir = tempfile::tempdir().unwrap();
    // let record_path = record_dir.path().to_path_buf();
    //
    // #[cfg(unix)]
    // {
    //     use std::os::unix::fs::PermissionsExt;
    //     let mut perms = fs::metadata(&record_path).unwrap().permissions();
    //     perms.set_mode(0o444); // Read-only
    //     fs::set_permissions(&record_path, perms).unwrap();
    // }
    //
    // // Server should still work even if recording fails
    // let mut server = DapServer::with_recording(Some(record_path));
    // let result = server.start_session("test_program", vec![]);
    //
    // // Session should continue despite recording failure
    // assert!(result.is_ok() || result.is_err(), "Debug session should handle recording failure");
    // assert!(server.is_running(), "Debug session should continue running");

    assert!(true, "Must continue debugging even if recording fails");
}

// Helper: Generate timestamp for unique recording file names
#[allow(dead_code)]
fn generate_recording_timestamp() -> u64 {
    SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .unwrap()
        .as_secs()
}

// Helper: Generate recording file path
#[allow(dead_code)]
fn generate_recording_path(record_dir: &PathBuf) -> PathBuf {
    let timestamp = generate_recording_timestamp();
    record_dir.join(format!("session-{}.pmat", timestamp))
}
