import XCTest
@testable import NetworkCityCore

final class IPRangesTests: XCTestCase {

    func testAppleEightSlashEight() {
        XCTAssertEqual(IPRanges.match("17.248.242.19")?.key, "apple")
        XCTAssertEqual(IPRanges.match("17.42.251.69")?.name, "Apple")
    }

    func testTelegram() {
        XCTAssertEqual(IPRanges.match("149.154.175.54")?.key, "telegram")
    }

    func testPrivateRangesAreLocalNetwork() {
        XCTAssertEqual(IPRanges.match("192.168.0.1")?.name, "Local Network")
        XCTAssertEqual(IPRanges.match("10.1.2.3")?.key, "lan")
        XCTAssertEqual(IPRanges.match("172.20.0.5")?.key, "lan")
    }

    func testUnknownIPReturnsNil() {
        XCTAssertNil(IPRanges.match("8.8.8.8"))
    }

    func testInvalidIPReturnsNil() {
        XCTAssertNil(IPRanges.match("not.an.ip"))
        XCTAssertNil(IPRanges.match("999.1.1.1"))
    }

    func testClassifyUsesRangeFallbackWhenNoPTR() {
        // Apple publishes no PTR for 17/8, so the range table must catch it.
        let org = OrgClassifier.classify(ip: "17.248.242.19", ptr: nil)
        XCTAssertEqual(org.key, "apple")
        XCTAssertEqual(org.name, "Apple")
    }

    func testPTRStillWinsOverRange() {
        // A real registrable domain in the PTR should take precedence.
        let org = OrgClassifier.classify(ip: "17.248.242.19", ptr: "host.example.com")
        XCTAssertEqual(org.key, "example.com")
    }
}