package uk.beads.manager

import android.app.Activity
import android.os.Handler
import android.os.Looper
import android.view.View
import android.view.ViewGroup
import android.webkit.CookieManager
import android.webkit.WebView
import android.webkit.WebViewClient
import okhttp3.Cookie
import okhttp3.HttpUrl.Companion.toHttpUrlOrNull

object SessionInitializer {
    private var initialized = false

    fun init(activity: Activity, onReady: () -> Unit) {
        if (initialized) {
            onReady()
            return
        }

        CookieManager.getInstance().setAcceptCookie(true)

        val webView = WebView(activity)
        webView.settings.javaScriptEnabled = true
        webView.settings.domStorageEnabled = true
        activity.addContentView(webView, ViewGroup.LayoutParams(1, 1))
        webView.visibility = View.INVISIBLE

        val handler = Handler(Looper.getMainLooper())

        // Fallback timeout — proceed after 10 seconds even if no __test cookie
        handler.postDelayed({
            if (!initialized) {
                android.util.Log.w("SessionInit", "Timeout waiting for __test cookie — proceeding anyway")
                initialized = true
                transferWebViewCookies()
                onReady()
            }
        }, 10000)

        webView.webViewClient = object : WebViewClient() {
            override fun onPageFinished(view: WebView, url: String) {
                android.util.Log.d("SessionInit", "Page finished: $url")

                val cookieStr = CookieManager.getInstance().getCookie(ApiClient.BASE_URL) ?: return
                android.util.Log.d("SessionInit", "WebView cookies: $cookieStr")

                if (cookieStr.contains("__test=")) {
                    if (!initialized) {
                        initialized = true
                        handler.removeCallbacksAndMessages(null)
                        transferWebViewCookies()
                        android.util.Log.d("SessionInit", "Bot challenge passed via WebView")
                        onReady()
                    }
                }
            }
        }

        webView.loadUrl("${ApiClient.BASE_URL}/login.php?i=1")
    }

    /**
     * Transfers cookies from the system WebView CookieManager into ApiClient's OkHttp cookie store.
     */
    private fun transferWebViewCookies() {
        val cookieStr = CookieManager.getInstance().getCookie(ApiClient.BASE_URL) ?: return
        val httpUrl = ApiClient.BASE_URL.toHttpUrlOrNull() ?: return

        cookieStr.split(";").forEach { raw ->
            val parts = raw.trim().split("=", limit = 2)
            if (parts.size == 2 && parts[0].isNotBlank()) {
                val cookie = Cookie.Builder()
                    .name(parts[0].trim())
                    .value(parts[1].trim())
                    .domain(httpUrl.host)
                    .path("/")
                    .build()
                ApiClient.addCookie(httpUrl.host, cookie)
                android.util.Log.d("SessionInit", "Transferred cookie: ${parts[0].trim()}")
            }
        }
    }

    fun reset() {
        initialized = false
    }
}