package com.fireho.queroir

import android.content.Intent
import android.os.Bundle
import android.os.Handler
import android.os.Looper
import android.util.Log
import android.view.View
import android.webkit.JavascriptInterface
import android.webkit.WebView
import androidx.activity.enableEdgeToEdge
import dev.hotwire.navigation.activities.HotwireActivity
import dev.hotwire.navigation.navigator.NavigatorConfiguration
import dev.hotwire.navigation.util.applyDefaultImeWindowInsets

class MainActivity : HotwireActivity() {
    private lateinit var qrCodeScanner: QrCodeScanner
    private var webView: WebView? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        enableEdgeToEdge()
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        findViewById<View>(R.id.main_nav_host).applyDefaultImeWindowInsets()

        // Initialize QR code scanner
        qrCodeScanner = QrCodeScanner(this)

        // Delay setup to ensure WebView is loaded
        Handler(Looper.getMainLooper()).postDelayed({
            findWebViewAndSetupInterface()
        }, 1000)
    }

    /**
     * Find WebView and set up JavaScript interface
     */
    private fun findWebViewAndSetupInterface() {
        try {
            // Find the WebView
            webView = findWebView()

            if (webView != null) {
                Log.d("MainActivity", "WebView found, setting up JavaScript interface")
                setupJavaScriptInterface(webView!!)
            } else {
                Log.e("MainActivity", "WebView not found, retrying in 1 second")

                // Retry after a delay
                Handler(Looper.getMainLooper()).postDelayed({
                    findWebViewAndSetupInterface()
                }, 1000)
            }
        } catch (e: Exception) {
            Log.e("MainActivity", "Error finding WebView", e)
        }
    }

    /**
     * Set up JavaScript interface for QR code scanning
     */
    private fun setupJavaScriptInterface(webView: WebView) {
        try {
            Log.d("MainActivity", "Setting up JavaScript interface")

            // Add JavaScript interface
            webView.addJavascriptInterface(object {
                /**
                 * Perform an action from JavaScript
                 */
                @JavascriptInterface
                fun perform(action: String) {
                    Log.d("MainActivity", "perform action received: $action")
                    if (action == "scanQrCode") {
                        runOnUiThread {
                            qrCodeScanner.scan()
                        }
                    }
                }
            }, "HotwireNative")

            // Inject JavaScript to set up the callbacks system
            val jsSetup = """
                (function() {
                    // Set up HotwireNative object if it doesn't exist
                    window.HotwireNative = window.HotwireNative || {};

                    // Set a flag to indicate that HotwireNative is available
                    window.HotwireNative.isAvailable = true;

                    console.log('Setting up HotwireNative JavaScript interface');

                    // Initialize callbacks object if it doesn't exist
                    if (!window.HotwireNative.callbacks) {
                        window.HotwireNative.callbacks = {};
                    }

                    // Add registerCallback function if it doesn't exist
                    if (typeof window.HotwireNative.registerCallback !== 'function') {
                        window.HotwireNative.registerCallback = function(name, callback) {
                            window.HotwireNative.callbacks[name] = callback;
                            console.log('Registered callback: ' + name);
                        };
                    }

                    console.log('HotwireNative JavaScript interface setup complete');

                    // Dispatch an event to notify the web app that HotwireNative is available
                    var event = new CustomEvent('hotwireNativeAvailable');
                    document.dispatchEvent(event);
                })();
            """.trimIndent()

            webView.evaluateJavascript(jsSetup) { result ->
                Log.d("MainActivity", "JavaScript setup result: $result")
            }

            Log.d("MainActivity", "JavaScript interface setup complete")
        } catch (e: Exception) {
            Log.e("MainActivity", "Error setting up JavaScript interface", e)
        }
    }

    /**
     * Find the WebView in the view hierarchy
     */
    private fun findWebView(): WebView? {
        try {
            // Try to find WebView in the navigator host
            val navHost = findViewById<View>(R.id.main_nav_host)

            // Log the view hierarchy for debugging
            Log.d("MainActivity", "NavHost: $navHost")

            // Try different approaches to find the WebView

            // Approach 1: Direct child
            val webView1 = navHost?.findViewById<WebView>(android.R.id.content)
            if (webView1 != null) {
                Log.d("MainActivity", "WebView found using approach 1")
                return webView1
            }

            // Approach 2: Search all children recursively
            val webView2 = findWebViewInViewHierarchy(navHost)
            if (webView2 != null) {
                Log.d("MainActivity", "WebView found using approach 2")
                return webView2
            }

            Log.e("MainActivity", "WebView not found in view hierarchy")
            return null
        } catch (e: Exception) {
            Log.e("MainActivity", "Error finding WebView", e)
            return null
        }
    }

    /**
     * Find WebView in view hierarchy recursively
     */
    private fun findWebViewInViewHierarchy(view: View?): WebView? {
        if (view == null) return null
        if (view is WebView) return view

        try {
            if (view is android.view.ViewGroup) {
                for (i in 0 until view.childCount) {
                    val child = view.getChildAt(i)
                    val webView = findWebViewInViewHierarchy(child)
                    if (webView != null) return webView
                }
            }
        } catch (e: Exception) {
            Log.e("MainActivity", "Error searching view hierarchy", e)
        }

        return null
    }

    override fun navigatorConfigurations() = listOf(
        NavigatorConfiguration(
            name = "main",
            // startLocation = "https://hotwire-native-demo.dev",
            startLocation = "https://queroir.ai",
            navigatorHostId = R.id.main_nav_host
        )
    )

    // Handle QR code scan result
    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)

        // Get the current WebView
        val currentWebView = webView

        if (currentWebView != null) {
            qrCodeScanner.handleScanResult(requestCode, resultCode, data, currentWebView)
        } else {
            Log.e("MainActivity", "No WebView available to handle QR code result")

            // Try to find WebView again
            val foundWebView = findWebView()
            if (foundWebView != null) {
                qrCodeScanner.handleScanResult(requestCode, resultCode, data, foundWebView)
            } else {
                Log.e("MainActivity", "Still no WebView available to handle QR code result")
            }
        }
    }
}