org-social-ios/Tests/OrgSocialKitTests/URLNickTests.swift

import Foundation
import Testing
@testable import OrgSocialKit

/// Tests for `inferredNick(from:)` — the placeholder-nick heuristic used by
/// mention autocomplete for relay-only candidates whose profiles have not been
/// fetched yet. Cases are derived from real feeds registered on the public relay.
@Suite("inferredNick – relay URL patterns")
struct URLNickTests {

    // MARK: - Path-less host (e.g. social.orgro.org)

    @Test("path-less host: penultimate segment of the hostname")
    func pathlessHost() {
        // https://social.orgro.org → "orgro"
        #expect(nick("https://social.orgro.org") == "orgro")
    }

    @Test("path-less host with subdomain: ignores leading segment")
    func pathlessHostSubdomain() {
        // Hypothetical: https://org.social.example.com → "example"
        #expect(nick("https://org.social.example.com") == "example")
    }

    // MARK: - /social.org at root (single path segment)

    @Test("root social.org: falls back to host")
    func rootSocialOrg() {
        // https://rossabaker.com/social.org → "rossabaker.com"
        #expect(nick("https://rossabaker.com/social.org") == "rossabaker.com")
    }

    @Test("root social.org on srht: falls back to host")
    func srhtRootSocialOrg() {
        // https://gnomon.srht.site/social.org → "gnomon.srht.site"
        #expect(nick("https://gnomon.srht.site/social.org") == "gnomon.srht.site")
    }

    @Test("root social.org on github.io: falls back to host")
    func githubIoRoot() {
        // https://thesolarprincess.github.io/social.org → "thesolarprincess.github.io"
        #expect(nick("https://thesolarprincess.github.io/social.org") == "thesolarprincess.github.io")
    }

    // MARK: - /user/social.org (two-segment path, standard vhost pattern)

    @Test("vhost-style: second-to-last segment is the username")
    func vhostUsername() {
        // https://host.org-social.org/andros/social.org → "andros"
        #expect(nick("https://host.org-social.org/andros/social.org") == "andros")
    }

    @Test("vhost-style: preserves case")
    func vhostPreservesCase() {
        // https://host.org-social.org/BALKIN/social.org → "BALKIN"
        #expect(nick("https://host.org-social.org/BALKIN/social.org") == "BALKIN")
    }

    @Test("two-segment path on personal domain")
    func twoSegmentPersonal() {
        // https://zweili.ch/org-social/social.org → "org-social"
        #expect(nick("https://zweili.ch/org-social/social.org") == "org-social")
    }

    @Test("tilde path on personal domain")
    func tildePath() {
        // https://muse-amuse.in/~punchagan/social.org → "~punchagan"
        #expect(nick("https://muse-amuse.in/~punchagan/social.org") == "~punchagan")
    }

    @Test("github pages two-segment: subfolder name")
    func githubPagesSubfolder() {
        // https://xlymian.github.io/org-social/social.org → "org-social"
        #expect(nick("https://xlymian.github.io/org-social/social.org") == "org-social")
    }

    // MARK: - Custom filename (ends in .org but not social.org)

    @Test("custom .org filename: second-to-last segment is the nick")
    func customOrgFilename() {
        // https://cybervalley.org/org-social-leandro/org-social.org → "org-social-leandro"
        #expect(nick("https://cybervalley.org/org-social-leandro/org-social.org") == "org-social-leandro")
    }

    @Test("custom .org filename on github pages")
    func customOrgFilenameGithubPages() {
        // https://dharmatech.github.io/org-social-dharmatech/org-social.org → "org-social-dharmatech"
        #expect(nick("https://dharmatech.github.io/org-social-dharmatech/org-social.org") == "org-social-dharmatech")
    }

    @Test("wrbutros codeberg page: root .org filename falls back to host")
    func codebergPageRootOrgFile() {
        // https://wrbutros.codeberg.page/org-social.org → "wrbutros.codeberg.page"
        #expect(nick("https://wrbutros.codeberg.page/org-social.org") == "wrbutros.codeberg.page")
    }

    // MARK: - Deep paths (GitHub raw, Codeberg raw)

    @Test("deep github raw path: segment before the filename")
    func githubRawDeep() {
        // https://raw.githubusercontent.com/fengbainuo/org-social/refs/heads/main/social.org → "main"
        #expect(nick("https://raw.githubusercontent.com/fengbainuo/org-social/refs/heads/main/social.org") == "main")
    }

    @Test("deep codeberg raw path: segment before the filename")
    func codebergRawDeep() {
        // https://codeberg.org/mester/CosasSociales/raw/branch/main/social.org → "main"
        #expect(nick("https://codeberg.org/mester/CosasSociales/raw/branch/main/social.org") == "main")
    }

    // MARK: - Non-.org path segments

    @Test("non-.org final segment: last segment used as-is")
    func nonOrgFinalSegment() {
        // Hypothetical: https://example.com/feeds/alice → "alice"
        #expect(nick("https://example.com/feeds/alice") == "alice")
    }

    // MARK: - Helpers

    private func nick(_ urlString: String) -> String {
        guard let url = URL(string: urlString) else {
            Issue.record("Invalid URL: \(urlString)")
            return ""
        }
        return inferredNick(from: url)
    }
}