package com.xuqm.sdk.log

object FunnelTracker {
    private val funnels = mutableMapOf<String, List<String>>()
    private val progress = mutableMapOf<String, MutableList<String>>()

    fun define(id: String, steps: List<String>) {
        funnels[id] = steps
        progress[id] = mutableListOf()
    }

    fun track(eventName: String, @Suppress("UNUSED_PARAMETER") properties: Map<String, Any?>) {
        for ((id, steps) in funnels) {
            val done = progress[id] ?: continue
            val next = steps.getOrNull(done.size) ?: continue
            if (next == eventName) done.add(eventName)
        }
    }
}