import UIKit

extension RDEPUBReaderController {

    public func reloadBook() {
        runtime.reloadBook()
    }

    public func go(to location: RDEPUBLocation) {
        guard publication != nil else { return }
        _ = runtime.go(to: location)
    }

    @discardableResult
    public func go(toPageNumber pageNumber: Int, animated: Bool = false) -> Bool {
        runtime.go(toPageNumber: pageNumber, animated: animated)
    }

    public func clearSelection() {
        runtime.clearSelection()
    }

    public func bookmark(withID id: String) -> RDEPUBBookmark? {
        runtime.bookmark(withID: id)
    }

    public func highlight(withID id: String) -> RDEPUBHighlight? {
        runtime.highlight(withID: id)
    }

    public func nativeTextSemanticSummary() -> String? {
        let resolvedPage: RDEPUBTextPage?
        if let textBook {
            resolvedPage = textBook.page(at: max(readerView.currentPage + 1, 1)) ?? textBook.pages.first
        } else if readerContext.bookPageMap != nil {
            let absolutePageIndex = max(readerView.currentPage, 0)
            _ = runtime.prepareOnDemandChapter(forAbsolutePageNumber: absolutePageIndex + 1)
            resolvedPage = runtime.pageResolver.resolvePage(absolutePageIndex: absolutePageIndex)?.page
        } else {
            resolvedPage = nil
        }

        guard let page = resolvedPage else {
            return nil
        }

        let metadata = page.metadata
        var parts = [
            "page \(page.absolutePageIndex + 1)",
            "break \(metadata.breakReason.rawValue)",
            metadata.blockKinds.isEmpty ? nil : "block kinds [\(metadata.blockKinds.map(\.rawValue).joined(separator: ","))]",
            metadata.semanticHints.isEmpty ? nil : "hints [\(metadata.semanticHints.map(\.rawValue).joined(separator: ","))]",
            metadata.attachmentPlacements.isEmpty ? nil : "placements [\(metadata.attachmentPlacements.map(\.rawValue).joined(separator: ","))]"
        ].compactMap { $0 }
        if let firstDiagnostic = metadata.diagnostics.first {
            parts.append(firstDiagnostic)
        }
        return parts.joined(separator: " · ")
    }

    @discardableResult
    public func addHighlight(
        from selection: RDEPUBSelection? = nil,
        color: String = "#F8E16C",
        note: String? = nil
    ) -> RDEPUBHighlight? {
        runtime.addHighlight(from: selection, color: color, note: note)
    }

    @discardableResult
    public func addAnnotation(
        from selection: RDEPUBSelection? = nil,
        style: RDEPUBHighlightStyle,
        color: String = "#F8E16C",
        note: String? = nil
    ) -> RDEPUBHighlight? {
        runtime.addAnnotation(from: selection, style: style, color: color, note: note)
    }

    @discardableResult
    public func upsertHighlight(_ highlight: RDEPUBHighlight) -> RDEPUBHighlight? {
        runtime.upsertHighlight(highlight)
    }

    @discardableResult
    public func removeHighlight(id: String) -> RDEPUBHighlight? {
        runtime.removeHighlight(id: id)
    }

    @discardableResult
    public func updateHighlightNote(id: String, note: String?) -> RDEPUBHighlight? {
        runtime.updateHighlightNote(id: id, note: note)
    }

    @discardableResult
    public func go(toHighlightID id: String, animated: Bool = true) -> Bool {
        runtime.go(toHighlightID: id, animated: animated)
    }

    public func removeAllHighlights() {
        runtime.removeAllHighlights()
    }

    @discardableResult
    public func go(toTableOfContentsItem item: EPUBTableOfContentsItem, animated: Bool = true) -> Bool {
        go(toTableOfContentsHref: item.href, animated: animated)
    }

    @discardableResult
    public func go(toTableOfContentsItem item: RDEPUBReaderTableOfContentsItem, animated: Bool = true) -> Bool {
        go(toTableOfContentsHref: item.href, animated: animated)
    }

    @discardableResult
    public func go(toTableOfContentsHref href: String, animated: Bool = true) -> Bool {
        guard publication != nil else { return false }

        let components = href.components(separatedBy: "#")
        let baseHref = components.first ?? href
        let fragment = components.count > 1 ? components[1] : nil
        let location = RDEPUBLocation(
            bookIdentifier: currentBookIdentifier,
            href: baseHref,
            progression: 0,
            fragment: fragment
        )
        return restoreReadingLocation(location, animated: animated)
    }

    @discardableResult
    public func addBookmark(note: String? = nil) -> RDEPUBBookmark? {
        runtime.addBookmark(note: note)
    }

    @discardableResult
    public func toggleBookmark(note: String? = nil) -> RDEPUBBookmark? {
        runtime.toggleBookmark(note: note)
    }

    @discardableResult
    public func removeBookmark(id: String) -> RDEPUBBookmark? {
        runtime.removeBookmark(id: id)
    }

    @discardableResult
    public func go(toBookmarkID id: String, animated: Bool = true) -> Bool {
        runtime.go(toBookmarkID: id, animated: animated)
    }

    public func search(keyword: String) {
        runtime.search(keyword: keyword)
    }

    @discardableResult
    public func searchNext() -> Bool {
        runtime.searchNext()
    }

    @discardableResult
    public func searchPrevious() -> Bool {
        runtime.searchPrevious()
    }

    public func clearSearch() {
        runtime.clearSearch()
    }
}