use xex2tractor::header::{ModuleFlags, XEX2_MAGIC};
use xex2tractor::optional::{CompressionType, EncryptionType, SystemFlags};

fn sample_data() -> Vec<u8> {
    let path = format!("{}/tests/data/default.xex", env!("CARGO_MANIFEST_DIR"));
    std::fs::read(&path).expect("sample file should exist at tests/data/default.xex")
}

// ── Header tests ──────────────────────────────────────────────────────────────

#[test]
fn test_full_parse() {
    let data = sample_data();
    let xex = xex2tractor::parse(&data).unwrap();

    assert_eq!(xex.header.magic, XEX2_MAGIC);
    assert_eq!(xex.header.module_flags, ModuleFlags(0x00000001));
    assert_eq!(xex.header.header_size, 0x00003000);
    assert_eq!(xex.header.reserved, 0x00000000);
    assert_eq!(xex.header.security_offset, 0x00000090);
    assert_eq!(xex.header.header_count, 15);
}

#[test]
fn test_parse_empty_file() {
    let data = vec![];
    assert!(xex2tractor::parse(&data).is_err());
}

#[test]
fn test_parse_invalid_magic() {
    let mut data = sample_data();
    data[0] = 0x00;
    assert!(xex2tractor::parse(&data).is_err());
}

// ── Optional header tests ─────────────────────────────────────────────────────

#[test]
fn test_optional_headers_all_present() {
    let data = sample_data();
    let xex = xex2tractor::parse(&data).unwrap();
    let opt = &xex.optional_headers;

    // All 15 entries should be parsed
    assert_eq!(opt.entries.len(), 15);

    // Verify presence of all expected headers
    assert!(opt.entry_point.is_some());
    assert!(opt.image_base_address.is_some());
    assert!(opt.default_stack_size.is_some());
    assert!(opt.system_flags.is_some());
    assert!(opt.execution_info.is_some());
    assert!(opt.file_format_info.is_some());
    assert!(opt.checksum_timestamp.is_some());
    assert!(opt.original_pe_name.is_some());
    assert!(opt.tls_info.is_some());
    assert!(opt.static_libraries.is_some());
    assert!(opt.import_libraries.is_some());
    assert!(opt.resource_info.is_some());
    assert!(opt.game_ratings.is_some());
    assert!(opt.lan_key.is_some());
    assert!(opt.xbox360_logo_size.is_some());
}

#[test]
fn test_optional_inline_values() {
    let data = sample_data();
    let xex = xex2tractor::parse(&data).unwrap();
    let opt = &xex.optional_headers;

    assert_eq!(opt.entry_point.unwrap(), 0x824AB748);
    assert_eq!(opt.image_base_address.unwrap(), 0x82000000);
    assert_eq!(opt.default_stack_size.unwrap(), 0x00080000);
    assert_eq!(opt.system_flags.unwrap(), SystemFlags(0x00000400));
}

#[test]
fn test_optional_execution_info() {
    let data = sample_data();
    let xex = xex2tractor::parse(&data).unwrap();
    let exec = xex.optional_headers.execution_info.as_ref().unwrap();

    assert_eq!(exec.title_id, 0x535107D4);
    assert_eq!(exec.media_id, 0x2D2E2EEB);
}

#[test]
fn test_optional_file_format() {
    let data = sample_data();
    let xex = xex2tractor::parse(&data).unwrap();
    let fmt = xex.optional_headers.file_format_info.as_ref().unwrap();

    assert_eq!(fmt.encryption_type, EncryptionType::Normal);
    assert_eq!(fmt.compression_type, CompressionType::Normal);
}

#[test]
fn test_optional_static_libraries() {
    let data = sample_data();
    let xex = xex2tractor::parse(&data).unwrap();
    let libs = xex.optional_headers.static_libraries.as_ref().unwrap();

    assert_eq!(libs.len(), 12);
    // Verify first and a few known libraries
    assert_eq!(libs[0].name, "XAPILIB");
    assert_eq!(libs[1].name, "D3D9");
    assert_eq!(libs[3].name, "XBOXKRNL");
}

#[test]
fn test_optional_import_libraries() {
    let data = sample_data();
    let xex = xex2tractor::parse(&data).unwrap();
    let imports = xex.optional_headers.import_libraries.as_ref().unwrap();

    assert_eq!(imports.string_table.len(), 2);
    assert_eq!(imports.string_table[0], "xam.xex");
    assert_eq!(imports.string_table[1], "xboxkrnl.exe");
    assert!(!imports.libraries.is_empty());
}

// ── CLI tests ─────────────────────────────────────────────────────────────────

#[test]
fn test_cli_runs_with_sample() {
    let path = format!("{}/tests/data/default.xex", env!("CARGO_MANIFEST_DIR"));
    let output = std::process::Command::new(env!("CARGO_BIN_EXE_xex2tractor"))
        .arg(&path)
        .output()
        .expect("failed to run xex2tractor");

    assert!(output.status.success(), "CLI should exit successfully");
    let stdout = String::from_utf8_lossy(&output.stdout);

    // Header section
    assert!(stdout.contains("XEX2 Header"));
    assert!(stdout.contains("0x58455832"));
    assert!(stdout.contains("TITLE"));
    assert!(stdout.contains("Header Count:     15"));

    // Optional headers section
    assert!(stdout.contains("Optional Headers (15 entries)"));
    assert!(stdout.contains("[ENTRY_POINT] 0x824AB748"));
    assert!(stdout.contains("[IMAGE_BASE_ADDRESS] 0x82000000"));
    assert!(stdout.contains("EXECUTION_INFO"));
    assert!(stdout.contains("0x535107D4")); // title ID
    assert!(stdout.contains("FILE_FORMAT_INFO"));
    assert!(stdout.contains("Normal (AES-128-CBC)"));
    assert!(stdout.contains("Normal (LZX)"));
    assert!(stdout.contains("STATIC_LIBRARIES"));
    assert!(stdout.contains("XAPILIB"));
    assert!(stdout.contains("IMPORT_LIBRARIES"));
    assert!(stdout.contains("xboxkrnl.exe"));
    assert!(stdout.contains("default.pe")); // original PE name
    assert!(stdout.contains("PAL50_INCOMPATIBLE")); // system flags
}

#[test]
fn test_cli_no_args() {
    let output = std::process::Command::new(env!("CARGO_BIN_EXE_xex2tractor"))
        .output()
        .expect("failed to run xex2tractor");

    assert!(!output.status.success());
    let stderr = String::from_utf8_lossy(&output.stderr);
    assert!(stderr.contains("Usage"));
}

#[test]
fn test_cli_missing_file() {
    let output = std::process::Command::new(env!("CARGO_BIN_EXE_xex2tractor"))
        .arg("/nonexistent/file.xex")
        .output()
        .expect("failed to run xex2tractor");

    assert!(!output.status.success());
}