//! CAPTURE-003: CLI Recording Workflow End-to-End
//! Sprint 76 - RED Phase
//!
//! Tests drive the complete end-to-end workflow from `pmat debug serve` with
//! recording enabled through to `pmat debug replay` of the captured session.

// RED Test 1: End-to-end workflow (serve → capture → replay)
#[test]
fn test_end_to_end_serve_capture_replay() {
    // This test drives the requirement for complete E2E workflow
    // Expected: User can serve, capture, and replay a debug session

    // 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();
    //
    // // Step 1: Serve with recording
    // let server = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    // server.start_session("test_program", vec![]);
    //
    // // Step 2: Simulate debug session
    // server.step_next(); // Capture snapshot
    // server.step_in();   // Capture snapshot
    // server.step_out();  // Capture snapshot
    //
    // // Step 3: Disconnect and get recording path
    // let recording_path = server.disconnect().unwrap();
    //
    // // Step 4: Replay the recording
    // let recording = Recording::load_from_file(&recording_path).unwrap();
    // assert_eq!(recording.snapshot_count(), 3, "Should have 3 snapshots");

    assert!(
        true,
        "Must support end-to-end serve → capture → replay workflow"
    );
}

// RED Test 2: Recording metadata matches session
#[test]
fn test_recording_metadata_matches_session() {
    // This test drives the requirement for metadata preservation
    // Expected: Program name, args, environment preserved in 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 server = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    //
    // server.start_session("my_program", vec!["--flag".to_string(), "value".to_string()]);
    // server.add_environment("DAP_CLIENT", "VSCode");
    // server.add_environment("DAP_CLIENT_VERSION", "1.75.0");
    //
    // let recording_path = server.disconnect().unwrap();
    // let recording = Recording::load_from_file(&recording_path).unwrap();
    //
    // let metadata = recording.metadata();
    // assert_eq!(metadata.program, "my_program");
    // assert_eq!(metadata.args, vec!["--flag", "value"]);
    // assert_eq!(metadata.environment.get("DAP_CLIENT"), Some(&"VSCode".to_string()));

    assert!(true, "Recording metadata must match session parameters");
}

// RED Test 3: All snapshots present in recording
#[test]
fn test_all_snapshots_present_in_recording() {
    // This test drives the requirement for snapshot preservation
    // Expected: Every captured snapshot appears in the 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 server = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    //
    // server.start_session("test_program", vec![]);
    //
    // // Capture 100 snapshots
    // for _ in 0..100 {
    //     server.step_next();
    // }
    //
    // let recording_path = server.disconnect().unwrap();
    // let recording = Recording::load_from_file(&recording_path).unwrap();
    //
    // assert_eq!(recording.snapshot_count(), 100, "All 100 snapshots should be preserved");

    assert!(true, "All captured snapshots must be present in recording");
}

// RED Test 4: Variable values match execution
#[test]
fn test_variable_values_match_execution() {
    // This test drives the requirement for variable value accuracy
    // Expected: Variables in recording match actual execution state

    // 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 server = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    //
    // server.start_session("test_program", vec![]);
    // server.set_variable("x", 42);
    // server.step_next(); // Capture snapshot with x=42
    //
    // let recording_path = server.disconnect().unwrap();
    // let recording = Recording::load_from_file(&recording_path).unwrap();
    //
    // let snapshot = recording.get_snapshot(0).unwrap();
    // assert_eq!(snapshot.variables.get("x"), Some(&serde_json::json!(42)));

    assert!(
        true,
        "Variable values in recording must match execution state"
    );
}

// RED Test 5: Stack frames match execution
#[test]
fn test_stack_frames_match_execution() {
    // This test drives the requirement for stack frame accuracy
    // Expected: Call stack in recording matches actual execution

    // 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 server = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    //
    // server.start_session("test_program", vec![]);
    // server.push_stack_frame("main", "main.rs", 10);
    // server.push_stack_frame("helper", "utils.rs", 23);
    // server.step_next(); // Capture snapshot
    //
    // let recording_path = server.disconnect().unwrap();
    // let recording = Recording::load_from_file(&recording_path).unwrap();
    //
    // let snapshot = recording.get_snapshot(0).unwrap();
    // assert_eq!(snapshot.stack_frames.len(), 2);
    // assert_eq!(snapshot.stack_frames[0].name, "main");
    // assert_eq!(snapshot.stack_frames[1].name, "helper");

    assert!(true, "Stack frames in recording must match execution state");
}

// RED Test 6: Recording file size reasonable
#[test]
fn test_recording_file_size_reasonable() {
    // This test drives the requirement for file size limits
    // Expected: Recording file size < 10MB for 1000 snapshots

    // Will implement in GREEN phase:
    // use pmat::services::dap::server::DapServer;
    // use tempfile::tempdir;
    //
    // let record_dir = tempdir().unwrap();
    // let server = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    //
    // server.start_session("test_program", vec![]);
    //
    // // Capture 1000 snapshots with typical data
    // for i in 0..1000 {
    //     server.set_variable("counter", i);
    //     server.step_next();
    // }
    //
    // let recording_path = server.disconnect().unwrap();
    // let file_size = std::fs::metadata(&recording_path).unwrap().len();
    //
    // const MAX_SIZE_BYTES: u64 = 10 * 1024 * 1024; // 10MB
    // assert!(file_size < MAX_SIZE_BYTES, "Recording size {} bytes exceeds 10MB limit", file_size);

    assert!(
        true,
        "Recording file size must be reasonable (<10MB for 1000 snapshots)"
    );
}

// RED Test 7: Replay displays correct snapshot count
#[test]
fn test_replay_displays_correct_snapshot_count() {
    // This test drives the requirement for replay accuracy
    // Expected: Replay shows correct number of snapshots

    // Will implement in GREEN phase:
    // use pmat::services::dap::recording::Recording;
    // use tempfile::NamedTempFile;
    //
    // // Create a recording with known snapshot count
    // let temp_file = NamedTempFile::new().unwrap();
    // let mut writer = RecordingWriter::new(
    //     temp_file.reopen().unwrap(),
    //     "test_program".to_string(),
    //     vec![]
    // ).unwrap();
    //
    // // Write 50 snapshots
    // for i in 0..50 {
    //     writer.write_snapshot(&create_test_snapshot(i)).unwrap();
    // }
    // writer.finalize().unwrap();
    //
    // // Replay the recording
    // let recording = Recording::load_from_file(temp_file.path()).unwrap();
    // assert_eq!(recording.snapshot_count(), 50);

    assert!(true, "Replay must display correct snapshot count");
}

// RED Test 8: Replay position navigation works
#[test]
fn test_replay_position_navigation() {
    // This test drives the requirement for replay navigation
    // Expected: Can navigate to any snapshot position in replay

    // Will implement in GREEN phase:
    // use pmat::services::dap::recording::Recording;
    // use tempfile::NamedTempFile;
    //
    // let temp_file = NamedTempFile::new().unwrap();
    // let mut writer = RecordingWriter::new(
    //     temp_file.reopen().unwrap(),
    //     "test_program".to_string(),
    //     vec![]
    // ).unwrap();
    //
    // // Write snapshots with distinct frame IDs
    // for i in 0..10 {
    //     writer.write_snapshot(&create_test_snapshot(i)).unwrap();
    // }
    // writer.finalize().unwrap();
    //
    // let recording = Recording::load_from_file(temp_file.path()).unwrap();
    //
    // // Navigate to different positions
    // assert_eq!(recording.get_snapshot(0).unwrap().frame_id, 0);
    // assert_eq!(recording.get_snapshot(5).unwrap().frame_id, 5);
    // assert_eq!(recording.get_snapshot(9).unwrap().frame_id, 9);

    assert!(true, "Replay position navigation must work");
}

// RED Test 9: Multiple sessions create separate recordings
#[test]
fn test_multiple_sessions_separate_recordings() {
    // This test drives the requirement for session isolation
    // Expected: Multiple debug sessions create different recording files

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

    assert!(
        true,
        "Multiple sessions must create separate recording files"
    );
}

// RED Test 10: Performance - snapshot capture overhead
#[test]
fn test_snapshot_capture_performance() {
    // This test drives the requirement for performance
    // Expected: Snapshot capture adds <1ms overhead per snapshot

    // Will implement in GREEN phase:
    // use pmat::services::dap::server::DapServer;
    // use tempfile::tempdir;
    // use std::time::Instant;
    //
    // let record_dir = tempdir().unwrap();
    // let server = DapServer::with_recording(Some(record_dir.path().to_path_buf()));
    //
    // server.start_session("test_program", vec![]);
    //
    // // Measure 100 snapshot captures
    // let start = Instant::now();
    // for _ in 0..100 {
    //     server.step_next(); // Captures snapshot
    // }
    // let elapsed = start.elapsed();
    //
    // let avg_ms = elapsed.as_millis() as f64 / 100.0;
    // assert!(avg_ms < 1.0, "Average snapshot capture time {} ms exceeds 1ms target", avg_ms);

    assert!(true, "Snapshot capture must add <1ms overhead per snapshot");
}

/// Helper: Create test snapshot for E2E tests
#[allow(dead_code)]
fn create_test_snapshot(frame_id: u64) -> pmat::services::dap::recording::Snapshot {
    use pmat::services::dap::recording::{Snapshot, StackFrame};
    use std::collections::HashMap;

    let mut variables = HashMap::new();
    variables.insert("test_var".to_string(), serde_json::json!(frame_id));

    let stack_frames = vec![StackFrame {
        name: "test_function".to_string(),
        file: Some("test.rs".to_string()),
        line: Some(10 + frame_id as u32),
        locals: HashMap::new(),
    }];

    Snapshot {
        frame_id,
        timestamp_relative_ms: (frame_id * 100) as u32,
        variables,
        stack_frames,
        instruction_pointer: 0x401000 + (frame_id * 0x10),
        memory_snapshot: None,
    }
}
