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import Foundation
import SwiftUI
@MainActor
@Observable
final class DomainViewModel {
var domain: String = ""
var dnsSections: [DNSSection] = []
var dnsLoading = false
var dnsError: String?
var sslInfo: SSLCertificateInfo?
var sslLoading = false
var sslError: String?
var hasRun = false
private(set) var searchedDomain: String = ""
private static let recentSearchesKey = "recentSearches"
private static let maxRecent = 20
var recentSearches: [String] = UserDefaults.standard.stringArray(forKey: recentSearchesKey) ?? []
var trimmedDomain: String {
domain
.trimmingCharacters(in: .whitespacesAndNewlines)
.replacingOccurrences(of: "https://", with: "")
.replacingOccurrences(of: "http://", with: "")
.components(separatedBy: "/").first ?? ""
}
func run() {
let target = trimmedDomain
guard !target.isEmpty else { return }
addRecentSearch(target)
searchedDomain = target
hasRun = true
dnsSections = []
dnsError = nil
dnsLoading = true
sslInfo = nil
sslError = nil
sslLoading = true
Task {
await withTaskGroup(of: Void.self) { group in
group.addTask { @MainActor in
await self.runDNS(domain: target)
}
group.addTask { @MainActor in
await self.runSSL(domain: target)
}
}
}
}
private func runDNS(domain: String) async {
do {
let sections = await DNSLookupService.lookupAll(domain: domain)
dnsSections = sections
}
dnsLoading = false
}
private func runSSL(domain: String) async {
do {
let info = try await SSLCheckService.check(domain: domain)
sslInfo = info
} catch {
sslError = error.localizedDescription
}
sslLoading = false
}
/// True when both lookups have finished (regardless of success/failure).
var resultsLoaded: Bool {
hasRun && !dnsLoading && !sslLoading
}
// MARK: - Export
func exportText() -> String {
let dateFmt = DateFormatter()
dateFmt.dateFormat = "yyyy-MM-dd HH:mm"
let now = dateFmt.string(from: Date())
var lines: [String] = [
"DomainDig Export",
"Domain: \(searchedDomain)",
"Date: \(now)",
"",
"DNS Records",
"-----------"
]
for section in dnsSections {
lines.append(section.recordType.rawValue)
if let error = section.error {
lines.append(" Error: \(error)")
} else if section.records.isEmpty {
lines.append(" No records found")
} else {
for record in section.records {
lines.append(" \(record.value) TTL \(record.ttl)")
}
}
if !section.wildcardRecords.isEmpty {
lines.append("*.\(searchedDomain)")
for record in section.wildcardRecords {
lines.append(" \(record.value) TTL \(record.ttl)")
}
}
}
if let info = sslInfo {
let certDateFmt = DateFormatter()
certDateFmt.dateStyle = .medium
certDateFmt.timeStyle = .none
lines.append("")
lines.append("SSL / TLS Certificate")
lines.append("---------------------")
lines.append("Common Name: \(info.commonName)")
lines.append("Issuer: \(info.issuer)")
lines.append("SANs: \(info.subjectAltNames.joined(separator: ", "))")
lines.append("Valid From: \(certDateFmt.string(from: info.validFrom))")
lines.append("Valid Until: \(certDateFmt.string(from: info.validUntil))")
lines.append("Days Until Expiry: \(info.daysUntilExpiry)")
lines.append("Chain Depth: \(info.chainDepth)")
} else if let error = sslError {
lines.append("")
lines.append("SSL / TLS Certificate")
lines.append("---------------------")
lines.append("Error: \(error)")
}
return lines.joined(separator: "\n")
}
// MARK: - Recent Searches
private func addRecentSearch(_ domain: String) {
recentSearches.removeAll { $0.lowercased() == domain.lowercased() }
recentSearches.insert(domain, at: 0)
if recentSearches.count > Self.maxRecent {
recentSearches = Array(recentSearches.prefix(Self.maxRecent))
}
UserDefaults.standard.set(recentSearches, forKey: Self.recentSearchesKey)
}
func clearRecentSearches() {
recentSearches.removeAll()
UserDefaults.standard.removeObject(forKey: Self.recentSearchesKey)
}
}
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