import Foundation

extension RDEPUBParser {

    public func readingProfile() -> RDEPUBReadingProfile {
        if metadata.layout == .fixed {
            return .webFixedLayout
        }
        return hasInteractiveContent() ? .webInteractive : .textReflowable
    }

    public func hasInteractiveContent() -> Bool {
        let interactiveMediaTypes = [
            "application/javascript",
            "text/javascript",
            "application/ecmascript"
        ]
        if manifest.values.contains(where: { item in
            interactiveMediaTypes.contains(item.mediaType.lowercased()) || item.properties.contains("scripted")
        }) {
            return true
        }

        for item in spine where item.linear && (item.mediaType.contains("html") || item.mediaType.contains("xhtml")) {
            guard let html = htmlString(forRelativePath: item.href) else {
                continue
            }
            if containsInteractiveMarkup(html) {
                return true
            }
        }

        return false
    }

    private func containsInteractiveMarkup(_ html: String) -> Bool {
        let interactivePattern = #"<(script|iframe|video|audio|canvas|object|embed)\b|\bon(load|click|touchstart|touchend|mouseover|submit|change|input)=|hype_generated_script|swiper|webview"#
        if html.range(of: interactivePattern, options: [.regularExpression, .caseInsensitive]) != nil {
            return true
        }

        let dynamicSVGPattern = #"<svg\b[^>]*>[\s\S]*?(<(script|foreignObject|animate|animateMotion|animateTransform|set)\b|\bon(load|click|touchstart|touchend|mouseover)=)"#
        return html.range(of: dynamicSVGPattern, options: [.regularExpression, .caseInsensitive]) != nil
    }
}