package org.terst.feedreader.ui

import android.content.Context
import android.view.View
import android.webkit.WebResourceRequest
import android.webkit.WebView
import android.webkit.WebViewClient

/**
 * Shared factory for the read-only, dark-themed article WebView used by both the
 * per-article ReaderScreen and LinkReaderScreen (for links tapped inside an article).
 * JS is always off -- extracted/feed HTML never needs it, and this keeps articles
 * from running arbitrary scripts. Link taps are intercepted rather than left to
 * WebView's default behavior (handing off to the system browser) so following a
 * link stays inside the app's own reader/extraction pipeline.
 */
fun newReaderWebView(context: Context, onOpenLink: (String) -> Unit): WebView =
    WebView(context).apply {
        settings.javaScriptEnabled = false
        overScrollMode = View.OVER_SCROLL_NEVER
        isVerticalScrollBarEnabled = false
        isHorizontalScrollBarEnabled = false
        webViewClient = object : WebViewClient() {
            override fun shouldOverrideUrlLoading(view: WebView, request: WebResourceRequest): Boolean {
                onOpenLink(request.url.toString())
                return true
            }
        }
    }

// Hardcoded dark palette, not @media (prefers-color-scheme) -- the app itself always
// forces dark colorScheme() regardless of system setting (see MainActivity), so reader
// content should match rather than following a system light/dark the app itself ignores.
fun wrapReaderHtml(bodyContent: String): String = """
    <html><head><meta name="viewport" content="width=device-width, initial-scale=1">
    <style>
    body { font-family: sans-serif; font-size: 18px; line-height: 1.5; padding: 16px;
           background-color: #121212; color: #e1e1e1; }
    a { color: #8ab4f8; }
    img { max-width: 100%; height: auto; }
    </style></head>
    <body>$bodyContent</body></html>
""".trimIndent()