import Foundation

final class RDEPUBReaderServices {

    var dependencies: RDEPUBReaderDependencies

    init(dependencies: RDEPUBReaderDependencies) {
        self.dependencies = dependencies
    }

    func resolvedTextRenderer(configuration: RDEPUBReaderConfiguration) -> RDEPUBTextRenderer {
        dependencies.makeTextRenderer(configuration.textRenderingEngine)
    }

    func makeParser() -> RDEPUBParser {
        dependencies.makeParser()
    }

    func makePaginator() -> RDEPUBPaginator {
        dependencies.makePaginator()
    }

    func makeTextBookBuilder(
        configuration: RDEPUBReaderConfiguration,
        cache: RDEPUBTextBookCache?,
        layoutConfig: RDEPUBTextLayoutConfig
    ) -> RDEPUBTextBookBuilder {
        dependencies.makeTextBookBuilder(
            resolvedTextRenderer(configuration: configuration),
            cache,
            layoutConfig
        )
    }

    func makePlainTextBookBuilder(
        configuration: RDEPUBReaderConfiguration,
        layoutConfig: RDEPUBTextLayoutConfig
    ) -> RDPlainTextBookBuilder {
        dependencies.makePlainTextBookBuilder(
            resolvedTextRenderer(configuration: configuration),
            layoutConfig
        )
    }

    func makeChapterSummaryDiskCache(bookIdentifier: String?) -> RDEPUBChapterSummaryDiskCache {
        let cachesDirectory = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first
            ?? FileManager.default.temporaryDirectory
        let bookID = (bookIdentifier ?? "default").sha256Hex
        let directory = cachesDirectory
            .appendingPathComponent("RDEPUBChapterSummaryCache", isDirectory: true)
            .appendingPathComponent(bookID, isDirectory: true)
        return RDEPUBChapterSummaryDiskCache(cacheDirectory: directory)
    }
}