import Foundation
import Testing
@testable import PediFoods

private func decode<T: Decodable>(_ type: T.Type, _ json: String) throws -> T {
    try JSONDecoder().decode(T.self, from: Data(json.utf8))
}

@Test("StorePizzaConfig defaults every list to empty when fields are missing")
func storePizzaConfigDefaultsToEmptyLists() throws {
    let config = try decode(StorePizzaConfig.self, "{}")
    #expect(config.sizes.isEmpty)
    #expect(config.doughs.isEmpty)
    #expect(config.crusts.isEmpty)
}

@Test("StorePizzaCrust falls back to a placeholder id when missing")
func storePizzaCrustPlaceholderId() throws {
    let crust = try decode(StorePizzaCrust.self, "{}")
    #expect(crust.id.isEmpty == false)
    #expect(crust.priceModifier == nil)
}

@Test("StorePizzaCrust coerces priceModifier from Double, Int, or comma-decimal String")
func storePizzaCrustPriceModifierCoercion() throws {
    let asDouble = try decode(StorePizzaCrust.self, #"{"id":"1","priceModifier":3.5}"#)
    #expect(asDouble.priceModifier == 3.5)

    let asInt = try decode(StorePizzaCrust.self, #"{"id":"1","priceModifier":4}"#)
    #expect(asInt.priceModifier == 4.0)

    let asString = try decode(StorePizzaCrust.self, #"{"id":"1","priceModifier":"3,50"}"#)
    #expect(asString.priceModifier == 3.5)

    let malformed = try decode(StorePizzaCrust.self, #"{"id":"1","priceModifier":"not-a-number"}"#)
    #expect(malformed.priceModifier == nil)
}