package com.contentsquare.rn.csq.utils

import android.util.Log
import com.contentsquare.api.model.CustomVar
import com.facebook.react.bridge.ReadableArray
import com.facebook.react.bridge.ReadableType
import com.contentsquare.android.api.model.CustomVar as LegacyCustomVar

object CustomVarConverter {

    fun convertReadableArrayToCSQCustomVarList(customVars: ReadableArray?): List<CustomVar> {
        return convertReadableArray(customVars) { index, key, value ->
            CustomVar(index, key, value)
        }
    }

    fun convertReadableArrayToLegacyCustomVarList(customVars: ReadableArray?): List<LegacyCustomVar> {
        return convertReadableArray(customVars) { index, key, value ->
            LegacyCustomVar(index, key, value)
        }
    }

    private inline fun <T> convertReadableArray(
        customVars: ReadableArray?,
        createCustomVar: (index: Int, key: String, value: String) -> T
    ): List<T> {
        if (customVars == null) return emptyList()

        val customVarList = mutableListOf<T>()

        for (i in 0 until customVars.size()) {
            val type = customVars.getType(i)
            if (type == ReadableType.Map) {
                try {
                    val map = customVars.getMap(i)
                    val index = map?.getInt("index") ?: continue
                    val key = map.getString("key") ?: continue
                    val value = map.getString("value") ?: continue

                    customVarList.add(createCustomVar(index, key, value))
                } catch (e: Exception) {
                    Log.e("CSLIB", "Error converting custom var at index $i: Failed to extract required fields. Expected object with 'index' (number), 'key' (string), 'value' (string).")
                }
            } else {
                Log.w("CSLIB", "Custom var at index $i is not an object. Skipping.")
            }
        }

        return customVarList
    }
}