import Foundation
import Testing
@testable import ForgejoKit

struct RepositoryServiceURLTests {

    /// Creates a client with dummy credentials for URL construction tests.
    private func makeClient() -> ForgejoClient {
        ForgejoClient(serverURL: "https://forgejo.example.com", username: "user", password: "pass")
    }

    // MARK: - fetchContents URL construction

    @Test func makeURLContentsWithoutRef() throws {
        let client = makeClient()
        let url = try client.makeURL(path: "/api/v1/repos/owner/repo/contents")
        #expect(url.absoluteString == "https://forgejo.example.com/api/v1/repos/owner/repo/contents")
    }

    @Test func makeURLContentsWithRef() throws {
        let client = makeClient()
        let queryItems = [URLQueryItem(name: "ref", value: "develop")]
        let url = try client.makeURL(path: "/api/v1/repos/owner/repo/contents", queryItems: queryItems)
        #expect(url.absoluteString == "https://forgejo.example.com/api/v1/repos/owner/repo/contents?ref=develop")
    }

    @Test func makeURLContentsWithRefAndSubpath() throws {
        let client = makeClient()
        let queryItems = [URLQueryItem(name: "ref", value: "feature/login")]
        let url = try client.makeURL(path: "/api/v1/repos/owner/repo/contents/src/main.py", queryItems: queryItems)
        #expect(url.query?.contains("ref=feature/login") == true)
        #expect(url.path == "/api/v1/repos/owner/repo/contents/src/main.py")
    }

    @Test func makeURLFileContentWithRef() throws {
        let client = makeClient()
        let queryItems = [URLQueryItem(name: "ref", value: "v1.0")]
        let url = try client.makeURL(path: "/api/v1/repos/owner/repo/contents/README.md", queryItems: queryItems)
        #expect(url.absoluteString == "https://forgejo.example.com/api/v1/repos/owner/repo/contents/README.md?ref=v1.0")
    }

    @Test func makeURLWithEmptyQueryItems() throws {
        let client = makeClient()
        let url = try client.makeURL(path: "/api/v1/repos/owner/repo/contents", queryItems: [])
        #expect(url.query == nil)
    }

    // MARK: - ref parameter nil-coalescence (same pattern used by fetchContents and fetchFileContent)

    @Test func optionalRefProducesEmptyQueryItems() {
        let ref: String? = nil
        let queryItems = ref.map { [URLQueryItem(name: "ref", value: $0)] } ?? []
        #expect(queryItems.isEmpty)
    }

    @Test func presentRefProducesQueryItem() {
        let ref: String? = "main"
        let queryItems = ref.map { [URLQueryItem(name: "ref", value: $0)] } ?? []
        #expect(queryItems.count == 1)
        #expect(queryItems.first?.name == "ref")
        #expect(queryItems.first?.value == "main")
    }
}