import Foundation
import Testing
@testable import OrgSocialKit

/// The App layer keeps mention rewrite logic (encode/decode) close to the
/// Compose / Edit views so the lib stays unaware of UI concerns. That said,
/// the renderer's inline `@nick` output is part of the public contract —
/// it's what callers rely on to display the body. These tests pin the
/// renderer behaviour used by both directions.
@Suite("OrgBodyRenderer – mention round-trip")
struct OrgBodyMentionRoundtripTests {

    @Test("inline text shows @nick in place of the Org link")
    func inlineShortForm() {
        let body = "Hey [[org-social:https://alice.test/social.org][alice]], how are you?"
        let rendered = OrgBodyRenderer.render(body)
        let inline = String(rendered.inline.characters)
        #expect(inline.contains("Hey @alice, how are you?"))
        #expect(!inline.contains("[[org-social"))
    }

    @Test("multiple mentions are each rewritten inline and side-carred")
    func multipleMentions() {
        let body = """
        [[org-social:https://a.test/social.org][alice]] and \
        [[org-social:https://b.test/social.org][bob]] chat.
        """
        let rendered = OrgBodyRenderer.render(body)
        let inline = String(rendered.inline.characters)
        #expect(inline.contains("@alice"))
        #expect(inline.contains("@bob"))
        #expect(rendered.mentions.count == 2)
    }

    @Test("inline mentions carry a link attribute to the feed URL")
    func inlineLinkAttribute() {
        let body = "Hi [[org-social:https://alice.test/social.org][alice]]"
        let rendered = OrgBodyRenderer.render(body)
        // Walk the runs; find the one over "@alice" and check its link.
        var foundLink: URL?
        for run in rendered.inline.runs {
            let slice = String(rendered.inline[run.range].characters)
            if slice == "@alice" {
                foundLink = run.link
                break
            }
        }
        #expect(foundLink?.absoluteString == "https://alice.test/social.org")
    }
}