import Foundation

final class RDEPUBRuntimeChapter {

    let spineIndex: Int

    let href: String

    let title: String

    var sourceAttributedString: NSAttributedString?

    let typesetAttributedString: NSAttributedString

    let layouter: RDEPUBTextLayouter

    let pageRanges: [NSRange]

    let pages: [RDEPUBTextPage]

    let chapterOffsetMap: RDEPUBChapterOffsetMap

    init(
        spineIndex: Int,
        href: String,
        title: String,
        sourceAttributedString: NSAttributedString?,
        typesetAttributedString: NSAttributedString,
        layouter: RDEPUBTextLayouter,
        pageRanges: [NSRange],
        pages: [RDEPUBTextPage],
        chapterOffsetMap: RDEPUBChapterOffsetMap
    ) {
        self.spineIndex = spineIndex
        self.href = href
        self.title = title
        self.sourceAttributedString = sourceAttributedString
        self.typesetAttributedString = typesetAttributedString
        self.layouter = layouter
        self.pageRanges = pageRanges
        self.pages = pages
        self.chapterOffsetMap = chapterOffsetMap
    }

    func releaseSourceText() {
        sourceAttributedString = nil
    }

    func updateCFIMap(_ cfiMap: RDEPUBCFIMap) {
        chapterOffsetMap.updateCFIMap(cfiMap)
    }
}