import XCTest
@testable import ZitareNative

final class DeepLinkRouterTests: XCTestCase {
    let base = URL(string: "https://zitare.mana.how")!

    // MARK: - resolveToWebURL

    func test_resolve_customSchemeQuote() throws {
        let url = try XCTUnwrap(URL(string: "zitare://quote/spitteler-schweizer-bleiben"))
        let resolved = DeepLinkRouter.resolveToWebURL(url, base: base)
        XCTAssertEqual(resolved.absoluteString, "https://zitare.mana.how/q/spitteler-schweizer-bleiben")
    }

    func test_resolve_customSchemeAuthor() throws {
        let url = try XCTUnwrap(URL(string: "zitare://author/spitteler"))
        let resolved = DeepLinkRouter.resolveToWebURL(url, base: base)
        XCTAssertEqual(resolved.absoluteString, "https://zitare.mana.how/a/spitteler")
    }

    func test_resolve_customSchemeCollection() throws {
        let url = try XCTUnwrap(URL(string: "zitare://collection/schweizer-stimmen"))
        let resolved = DeepLinkRouter.resolveToWebURL(url, base: base)
        XCTAssertEqual(resolved.absoluteString, "https://zitare.mana.how/c/schweizer-stimmen")
    }

    func test_resolve_unknownCustomSchemeFallsBackToBase() throws {
        let url = try XCTUnwrap(URL(string: "zitare://unknown/foo"))
        let resolved = DeepLinkRouter.resolveToWebURL(url, base: base)
        XCTAssertEqual(resolved.absoluteString, "https://zitare.mana.how")
    }

    func test_resolve_httpsPassesThrough() throws {
        let url = try XCTUnwrap(URL(string: "https://zitare.com/q/keller-werke"))
        let resolved = DeepLinkRouter.resolveToWebURL(url, base: base)
        XCTAssertEqual(resolved.absoluteString, "https://zitare.com/q/keller-werke")
    }

    // MARK: - isExplorePath

    func test_explore_root() {
        XCTAssertTrue(DeepLinkRouter.isExplorePath("/explore"))
    }

    func test_explore_subpaths() {
        for path in [
            "/region/schweiz",
            "/thema/philosophie",
            "/rolle/schriftsteller",
            "/epoche/moderne",
            "/sprache/de",
            "/search",
            "/t/eigenstaendigkeit"
        ] {
            XCTAssertTrue(DeepLinkRouter.isExplorePath(path), "expected \(path) → explore")
        }
    }

    func test_read_paths_are_not_explore() {
        for path in ["/", "/q/spitteler-x", "/a/spitteler", "/c/schweizer", "/heute", "/random"] {
            XCTAssertFalse(DeepLinkRouter.isExplorePath(path), "expected \(path) → read")
        }
    }

    func test_explore_prefix_not_substring() {
        // `/region` matcht, aber `/regions/...` darf NICHT matchen
        XCTAssertTrue(DeepLinkRouter.isExplorePath("/region"))
        XCTAssertTrue(DeepLinkRouter.isExplorePath("/region/schweiz"))
        XCTAssertFalse(DeepLinkRouter.isExplorePath("/regions-overview"))
    }

    // MARK: - route (one-shot)

    func test_route_customQuote_goesToRead() throws {
        let result = try DeepLinkRouter.route(
            XCTUnwrap(URL(string: "zitare://quote/x")),
            base: base
        )
        XCTAssertEqual(result.url.path, "/q/x")
        XCTAssertFalse(result.isExplore)
    }

    func test_route_httpsExplorePath_goesToExplore() throws {
        let result = try DeepLinkRouter.route(
            XCTUnwrap(URL(string: "https://zitare.mana.how/region/schweiz")),
            base: base
        )
        XCTAssertTrue(result.isExplore)
    }
}