package com.xuqm.sdk.webview

import android.os.Build
import android.widget.Toast
import com.xuqm.sdk.XuqmSDK
import org.json.JSONObject

/**
 * Standard JSBridge handlers for xuqm.* messages.
 * These provide default implementations for hosts that don't use a custom protocol.
 *
 * Usage: register in XWebViewView's xwvMessageHandler or onMessage callback.
 */
object XWebViewStandardHandlers {

    fun handle(message: String, webView: XWebViewController?): String {
        val json = runCatching { JSONObject(message) }.getOrNull() ?: return errorResponse("invalid JSON")
        val name = json.optString("name", "")
        return when (name) {
            "xuqm.getDeviceInfo" -> handleGetDeviceInfo()
            "xuqm.getToken" -> handleGetToken()
            "xuqm.getUserInfo" -> handleGetUserInfo()
            "xuqm.closeWebView" -> handleCloseWebView(webView)
            "xuqm.showToast" -> handleShowToast(json)
            else -> errorResponse("unknown handler: $name")
        }
    }

    private fun handleGetDeviceInfo(): String {
        val data = JSONObject().apply {
            put("platform", "android")
            put("osVersion", Build.VERSION.RELEASE)
            put("sdkVersion", Build.VERSION.SDK_INT)
            put("manufacturer", Build.MANUFACTURER)
            put("model", Build.MODEL)
            put("brand", Build.BRAND)
        }
        return successResponse(data)
    }

    private fun handleGetToken(): String {
        val token = XuqmSDK.currentLoginSession?.userSig ?: ""
        val data = JSONObject().apply { put("token", token) }
        return successResponse(data)
    }

    private fun handleGetUserInfo(): String {
        val userInfo = XuqmSDK.userInfo
        if (userInfo == null) return errorResponse("not logged in")
        val data = JSONObject().apply {
            put("userId", userInfo.userId ?: "")
            put("nickname", userInfo.name ?: "")
            put("avatar", userInfo.avatar ?: "")
            put("phone", userInfo.phone ?: "")
        }
        return successResponse(data)
    }

    private fun handleCloseWebView(webView: XWebViewController?): String {
        webView?.let { wv ->
            if (wv.canGoBack()) wv.goBack() else wv.loadUrl("about:blank")
        }
        return successResponse(JSONObject())
    }

    private fun handleShowToast(json: JSONObject): String {
        val message = json.optString("message", "")
        if (message.isNotBlank()) {
            val ctx = XuqmSDK.appContext
            android.os.Handler(android.os.Looper.getMainLooper()).post {
                Toast.makeText(ctx, message, Toast.LENGTH_SHORT).show()
            }
        }
        return successResponse(JSONObject())
    }

    private fun successResponse(data: JSONObject): String =
        JSONObject().apply { put("code", 0); put("data", data) }.toString()

    private fun errorResponse(message: String): String =
        JSONObject().apply { put("code", -1); put("message", message) }.toString()
}