// RDEPUBWebView+Search.swift
// RDEPUBWebView 的搜索高亮扩展
// 从当前渲染请求中提取搜索展示信息，生成搜索高亮脚本并注入到 WebView 中执行。

import WebKit

extension RDEPUBWebView {
    /// 如果当前渲染请求包含搜索信息，注入搜索高亮脚本到 WebView
    func applySearchDecorationsIfNeeded(completion: (() -> Void)? = nil) {
        guard let webView else {
            completion?()
            return
        }

        let presentation: RDEPUBSearchPresentation?
        switch currentRenderRequest {
        case .reflowable(let request):
            presentation = request.searchPresentation
        case .fixed(let request):
            presentation = request.searchPresentation
        case .none:
            presentation = nil
        }

        let script = RDEPUBJavaScriptBridge.applySearchScript(for: presentation)
        webView.evaluateJavaScript(script) { [weak self] _, error in
            guard let self else {
                completion?()
                return
            }
            if let error {
                self.delegate?.epubWebView(self, didLogJavaScriptError: error.localizedDescription)
            }
            completion?()
        }
    }
}