/// Pretty-print formatting for parsed XEX2 structures.
use crate::header::Xex2Header;
use crate::optional::{
    format_hex_bytes, format_rating, format_timestamp, CompressionInfo, HeaderKey, OptionalHeaders,
};
use crate::security::SecurityInfo;

/// Prints the XEX2 main header in a human-readable format.
pub fn display_header(header: &Xex2Header) {
    println!("=== XEX2 Header ===");
    println!("Magic:            XEX2 (0x{:08X})", header.magic);
    println!("Module Flags:     {}", header.module_flags);
    println!(
        "Header Size:      0x{:08X} ({} bytes)",
        header.header_size, header.header_size
    );
    println!("Reserved:         0x{:08X}", header.reserved);
    println!("Security Offset:  0x{:08X}", header.security_offset);
    println!("Header Count:     {}", header.header_count);
}

/// Prints all parsed optional headers in a human-readable format.
pub fn display_optional_headers(headers: &OptionalHeaders) {
    println!();
    println!("=== Optional Headers ({} entries) ===", headers.entries.len());

    // Display inline u32 values first
    if let Some(v) = headers.entry_point {
        println!();
        println!("[ENTRY_POINT] 0x{v:08X}");
    }
    if let Some(v) = headers.original_base_address {
        println!("[ORIGINAL_BASE_ADDRESS] 0x{v:08X}");
    }
    if let Some(v) = headers.image_base_address {
        println!("[IMAGE_BASE_ADDRESS] 0x{v:08X}");
    }
    if let Some(v) = headers.default_stack_size {
        println!("[DEFAULT_STACK_SIZE] 0x{v:08X} ({v} bytes)");
    }
    if let Some(v) = headers.default_filesystem_cache_size {
        println!("[DEFAULT_FILESYSTEM_CACHE_SIZE] 0x{v:08X} ({v} bytes)");
    }
    if let Some(v) = headers.default_heap_size {
        println!("[DEFAULT_HEAP_SIZE] 0x{v:08X} ({v} bytes)");
    }
    if let Some(v) = headers.title_workspace_size {
        println!("[TITLE_WORKSPACE_SIZE] 0x{v:08X} ({v} bytes)");
    }
    if let Some(v) = headers.additional_title_memory {
        println!("[ADDITIONAL_TITLE_MEMORY] 0x{v:08X} ({v} bytes)");
    }
    if let Some(v) = headers.enabled_for_fastcap {
        println!("[ENABLED_FOR_FASTCAP] 0x{v:08X}");
    }

    // System flags
    if let Some(ref flags) = headers.system_flags {
        println!("[SYSTEM_FLAGS] {flags}");
    }

    // Execution info
    if let Some(ref exec) = headers.execution_info {
        println!();
        println!("[EXECUTION_INFO]");
        println!("  Media ID:        0x{:08X}", exec.media_id);
        println!("  Title ID:        0x{:08X}", exec.title_id);
        println!("  Version:         {}", exec.version);
        println!("  Base Version:    {}", exec.base_version);
        println!("  Platform:        {}", exec.platform);
        println!("  Executable Type: {}", exec.executable_type);
        println!("  Disc:            {}/{}", exec.disc_number, exec.disc_count);
        println!("  Savegame ID:     0x{:08X}", exec.savegame_id);
    }

    // File format info
    if let Some(ref fmt) = headers.file_format_info {
        println!();
        println!("[FILE_FORMAT_INFO]");
        println!("  Encryption:  {}", fmt.encryption_type);
        println!("  Compression: {}", fmt.compression_type);
        match &fmt.compression_info {
            CompressionInfo::Basic { blocks } => {
                println!("  Blocks:      {} basic compression blocks", blocks.len());
            }
            CompressionInfo::Normal {
                window_size,
                first_block,
            } => {
                println!(
                    "  Window Size: 0x{window_size:X} ({} KB)",
                    window_size / 1024
                );
                println!(
                    "  First Block: {} bytes",
                    first_block.block_size
                );
            }
            _ => {}
        }
    }

    // Checksum + timestamp
    if let Some(ref ct) = headers.checksum_timestamp {
        println!();
        println!("[CHECKSUM_TIMESTAMP]");
        println!("  Checksum:  0x{:08X}", ct.checksum);
        println!(
            "  Timestamp: 0x{:08X} ({})",
            ct.timestamp,
            format_timestamp(ct.timestamp)
        );
    }

    // Original PE name
    if let Some(ref name) = headers.original_pe_name {
        println!();
        println!("[ORIGINAL_PE_NAME] \"{name}\"");
    }

    // Bounding path
    if let Some(ref path) = headers.bounding_path {
        println!("[BOUNDING_PATH] \"{path}\"");
    }

    // TLS info
    if let Some(ref tls) = headers.tls_info {
        println!();
        println!("[TLS_INFO]");
        println!("  Slot Count:       {}", tls.slot_count);
        println!("  Raw Data Address: 0x{:08X}", tls.raw_data_address);
        println!("  Data Size:        {} bytes", tls.data_size);
        println!("  Raw Data Size:    {} bytes", tls.raw_data_size);
    }

    // Static libraries
    if let Some(ref libs) = headers.static_libraries {
        println!();
        println!("[STATIC_LIBRARIES] ({} libraries)", libs.len());
        for lib in libs {
            println!("  {lib}");
        }
    }

    // Import libraries
    if let Some(ref imports) = headers.import_libraries {
        println!();
        println!("[IMPORT_LIBRARIES] ({} libraries)", imports.libraries.len());
        for lib in &imports.libraries {
            println!(
                "  {} v{} (min v{}) - {} imports",
                lib.name, lib.version, lib.version_min, lib.record_count
            );
        }
    }

    // Resource info
    if let Some(ref resources) = headers.resource_info {
        println!();
        println!("[RESOURCE_INFO] ({} entries)", resources.len());
        for res in resources {
            println!(
                "  \"{}\" @ 0x{:08X}, size: {} bytes",
                res.name, res.address, res.size
            );
        }
    }

    // Game ratings
    if let Some(ref ratings) = headers.game_ratings {
        println!();
        println!("[GAME_RATINGS]");
        println!("  ESRB:    {} | PEGI:    {} | PEGI-FI: {} | PEGI-PT: {}",
            format_rating(ratings.esrb), format_rating(ratings.pegi),
            format_rating(ratings.pegi_fi), format_rating(ratings.pegi_pt));
        println!("  BBFC:    {} | CERO:    {} | USK:     {} | OFLC-AU: {}",
            format_rating(ratings.bbfc), format_rating(ratings.cero),
            format_rating(ratings.usk), format_rating(ratings.oflc_au));
        println!("  OFLC-NZ: {} | KMRB:    {} | Brazil:  {} | FPB:     {}",
            format_rating(ratings.oflc_nz), format_rating(ratings.kmrb),
            format_rating(ratings.brazil), format_rating(ratings.fpb));
    }

    // LAN key
    if let Some(ref key) = headers.lan_key {
        println!();
        println!("[LAN_KEY] {}", format_hex_bytes(key));
    }

    // Callcap imports
    if let Some(ref callcap) = headers.enabled_for_callcap {
        println!();
        println!("[ENABLED_FOR_CALLCAP]");
        println!("  Start Thunk: 0x{:08X}", callcap.start_func_thunk_addr);
        println!("  End Thunk:   0x{:08X}", callcap.end_func_thunk_addr);
    }

    // Exports by name
    if let Some(ref dir) = headers.exports_by_name {
        println!();
        println!("[EXPORTS_BY_NAME]");
        println!("  Offset: 0x{:08X}", dir.offset);
        println!("  Size:   {} bytes", dir.size);
    }

    // Xbox 360 logo
    if let Some(size) = headers.xbox360_logo_size {
        println!();
        println!("[XBOX360_LOGO] {size} bytes");
    }

    // Unknown headers
    for entry in &headers.entries {
        if let HeaderKey::Unknown(raw) = entry.key {
            println!();
            println!(
                "[UNKNOWN(0x{raw:08X})] value/offset: 0x{:08X}",
                entry.value
            );
        }
    }
}

/// Prints the security info in a human-readable format.
pub fn display_security_info(security: &SecurityInfo) {
    println!();
    println!("=== Security Info ===");
    println!(
        "Header Size:          0x{:08X} ({} bytes)",
        security.header_size, security.header_size
    );
    println!(
        "Image Size:           0x{:08X} ({} bytes)",
        security.image_size, security.image_size
    );

    // RSA signature — show first 8 and last 8 bytes
    let sig = &security.rsa_signature;
    println!(
        "RSA Signature:        {}...{} (256 bytes)",
        sig[..4].iter().map(|b| format!("{b:02X}")).collect::<String>(),
        sig[252..].iter().map(|b| format!("{b:02X}")).collect::<String>()
    );

    println!("Unknown (0x108):      0x{:08X}", security.unk_108);
    println!("Image Flags:          {}", security.image_flags);
    println!("Load Address:         0x{:08X}", security.load_address);
    println!(
        "Section Digest:       {}",
        format_hex_bytes(&security.section_digest)
    );
    println!("Import Table Count:   {}", security.import_table_count);
    println!(
        "Import Table Digest:  {}",
        format_hex_bytes(&security.import_table_digest)
    );
    println!(
        "XGD2 Media ID:        {}",
        security
            .xgd2_media_id
            .iter()
            .map(|b| format!("{b:02X}"))
            .collect::<String>()
    );
    println!(
        "AES Key (encrypted):  {}",
        format_hex_bytes(&security.aes_key)
    );

    if security.export_table == 0 {
        println!("Export Table:         0x00000000 (none)");
    } else {
        println!("Export Table:         0x{:08X}", security.export_table);
    }

    println!(
        "Header Digest:        {}",
        format_hex_bytes(&security.header_digest)
    );
    println!("Region:               {}", security.region);
    println!("Allowed Media Types:  {}", security.allowed_media_types);

    // Page descriptors
    println!();
    let page_size = security.image_flags.page_size();
    let page_size_label = if page_size == 0x1000 { "4KB" } else { "64KB" };
    println!(
        "Page Descriptors ({} entries, {} pages):",
        security.page_descriptor_count, page_size_label
    );

    let mut address_offset: u64 = 0;
    for (i, desc) in security.page_descriptors.iter().enumerate() {
        let digest_preview: String = desc.data_digest[..6]
            .iter()
            .map(|b| format!("{b:02X}"))
            .collect();
        let size = desc.page_count as u64 * page_size as u64;
        println!(
            "  #{i:<4} {:<10} {:<4} pages  ({:>8} bytes)  offset +0x{address_offset:08X}  SHA1: {digest_preview}...",
            desc.section_type.to_string(),
            desc.page_count,
            size
        );
        address_offset += size;
    }
    println!(
        "  Total mapped size: 0x{address_offset:X} ({address_offset} bytes)"
    );
}