package com.dmc.callcrm.sync

import android.content.Context
import androidx.work.CoroutineWorker
import androidx.work.Constraints
import androidx.work.ExistingPeriodicWorkPolicy
import androidx.work.NetworkType
import androidx.work.PeriodicWorkRequestBuilder
import androidx.work.WorkManager
import androidx.work.WorkerParameters
import com.dmc.callcrm.ApiConfig
import java.util.concurrent.TimeUnit

class SyncWorker(ctx: Context, params: WorkerParameters) : CoroutineWorker(ctx, params) {

    override suspend fun doWork(): Result {
        val ok = Syncer.run(applicationContext)
        return if (ok) Result.success() else Result.retry()
    }

    companion object {
        private const val NAME = "dmc_periodic_sync"

        /** Schedule the recurring background sync (idempotent). */
        fun schedule(ctx: Context) {
            val constraints = Constraints.Builder()
                .setRequiredNetworkType(NetworkType.CONNECTED)
                .build()

            val req = PeriodicWorkRequestBuilder<SyncWorker>(
                ApiConfig.SYNC_INTERVAL_MIN, TimeUnit.MINUTES
            ).setConstraints(constraints).build()

            WorkManager.getInstance(ctx).enqueueUniquePeriodicWork(
                NAME, ExistingPeriodicWorkPolicy.KEEP, req
            )
        }
    }
}