import Foundation

// MARK: - UUID Formatting Utilities
// Consolidated UUID normalization and formatting logic.
// Previously duplicated across Api.swift, BeaconScanner.swift, ScanView.swift,
// ServicePointListView.swift, and BeaconBanList.swift.

extension String {

    /// Normalize a UUID string: strip dashes, uppercase.
    /// Input:  "e2c56db5-dffb-48d2-b060-d0f5a71096e0" or "E2C56DB5DFFB48D2B060D0F5A71096E0"
    /// Output: "E2C56DB5DFFB48D2B060D0F5A71096E0"
    var normalizedUUID: String {
        replacingOccurrences(of: "-", with: "").uppercased()
    }

    /// Format a 32-char hex string into standard UUID format (8-4-4-4-12).
    /// Input:  "E2C56DB5DFFB48D2B060D0F5A71096E0"
    /// Output: "E2C56DB5-DFFB-48D2-B060-D0F5A71096E0"
    /// Returns the original string unchanged if it's not exactly 32 hex chars after normalization.
    var uuidWithDashes: String {
        let clean = normalizedUUID
        guard clean.count == 32 else { return self }
        let c = Array(clean)
        return "\(String(c[0..<8]))-\(String(c[8..<12]))-\(String(c[12..<16]))-\(String(c[16..<20]))-\(String(c[20..<32]))"
    }
}