package com.fireworksdk.bridge.models

import org.junit.Assert.assertEquals
import org.junit.Assert.assertNull
import org.junit.Test

class FWTrackPurchaseMapperTest {

  @Test
  fun `toProductItems returns null for null products so line_items is omitted`() {
    assertNull(FWTrackPurchaseMapper.toProductItems(null))
  }

  @Test
  fun `toProductItems maps sku and productName`() {
    val items = FWTrackPurchaseMapper.toProductItems(
      listOf(
        FWTrackPurchaseProduct(
          extProductId = "test_product_id",
          price = 10.25,
          quantity = 1,
          productName = "Test product",
          sku = "test_sku",
        )
      )
    )!!

    assertEquals(1, items.size)
    assertEquals("test_product_id", items[0].productId)
    assertEquals(10.25, items[0].price, 0.0)
    assertEquals(1, items[0].quantity)
    assertEquals("Test product", items[0].productName)
    assertEquals("test_sku", items[0].sku)
  }

  @Test
  fun `toProductItems falls back to sku when extProductId is missing`() {
    val items = FWTrackPurchaseMapper.toProductItems(
      listOf(
        FWTrackPurchaseProduct(
          price = 3.625,
          quantity = 2,
          sku = "test_sku",
        )
      )
    )!!

    assertEquals("test_sku", items[0].productId)
    assertEquals("test_sku", items[0].sku)
    assertNull(items[0].productName)
  }

  @Test
  fun `toProductItems maps multiple legacy products without sku`() {
    val items = FWTrackPurchaseMapper.toProductItems(
      listOf(
        FWTrackPurchaseProduct(extProductId = "product_1", price = 1.0, quantity = 1),
        FWTrackPurchaseProduct(extProductId = "product_2", price = 2.0, quantity = 2),
      )
    )!!

    assertEquals(2, items.size)
    assertEquals("product_1", items[0].productId)
    assertNull(items[0].sku)
    assertEquals("product_2", items[1].productId)
    assertNull(items[1].sku)
  }

  @Test
  fun `toProductItems applies defaults for missing price and quantity`() {
    val items = FWTrackPurchaseMapper.toProductItems(
      listOf(FWTrackPurchaseProduct(extProductId = "product_1"))
    )!!

    assertEquals(0.0, items[0].price, 0.0)
    assertEquals(0, items[0].quantity)
  }
}