import CoreText
import UIKit

extension NSAttributedString {
    func rd_paginatedFrames(
        size: CGSize,
        fragmentOffsets: [String: Int] = [:],
        config: RDEPUBTextLayoutConfig = .default
    ) -> [RDEPUBTextLayoutFrame] {
        RDEPUBTextLayouter(attributedString: self, pageSize: size, config: config)
            .layoutFrames(fragmentOffsets: fragmentOffsets)
    }

    func ss_pageRanges(size: CGSize) -> [NSRange] {
        rd_paginatedFrames(size: size).map(\.contentRange)
    }
}

extension UIColor {
    var ss_cssString: String {
        var red: CGFloat = 0
        var green: CGFloat = 0
        var blue: CGFloat = 0
        var alpha: CGFloat = 0
        getRed(&red, green: &green, blue: &blue, alpha: &alpha)
        return String(format: "rgba(%d, %d, %d, %.3f)", Int(red * 255), Int(green * 255), Int(blue * 255), alpha)
    }
}