import SwiftUI
import Testing
@testable import PediFoods

/// Constructs a `HomeView` directly (no host window/hierarchy needed to
/// call its plain funcs that take explicit parameters). Note:
/// `@State`-backed properties (`stores`, etc.) mutated *after*
/// construction do NOT reliably persist outside a real SwiftUI render
/// pass - confirmed empirically (computed properties reading `stores`
/// saw the untouched `[]` default even after `view.stores = ...`). So
/// this only covers `HomeView+Filtering` functions that take their
/// input as parameters, not ones that read `@State` implicitly -
/// `filteredStores` and friends are UI-test territory (Batch F), not
/// unit-test territory.
@MainActor
private func makeHomeView() -> HomeView {
    var state = AppState()
    let appStateBinding = Binding(get: { state }, set: { state = $0 })
    let tabBinding = Binding<MainTab>(get: { .home }, set: { _ in })
    return HomeView(appState: appStateBinding, selectedTab: tabBinding)
}

@Test("normalizeSearch folds diacritics and case")
@MainActor
func normalizeSearchFoldsDiacriticsAndCase() {
    let view = makeHomeView()
    #expect(view.normalizeSearch("Açaí") == "acai")
    #expect(view.normalizeSearch("PIZZA") == "pizza")
    #expect(view.normalizeSearch("  Café  ") == "cafe")
}

@Test("matchesPriceTier buckets delivery fees at the documented boundaries")
@MainActor
func matchesPriceTierBoundaries() {
    let view = makeHomeView()
    #expect(view.matchesPriceTier(fee: 5, tier: .low))
    #expect(view.matchesPriceTier(fee: 5.01, tier: .low) == false)
    #expect(view.matchesPriceTier(fee: 5.01, tier: .medium))
    #expect(view.matchesPriceTier(fee: 10, tier: .medium))
    #expect(view.matchesPriceTier(fee: 10.01, tier: .high))
    #expect(view.matchesPriceTier(fee: 20.01, tier: .veryHigh))
}

@Test("estimatedDeliveryMinutes picks the smaller number out of a range like '30-45 min'")
@MainActor
func estimatedDeliveryMinutesPicksMinimumOfRange() {
    let view = makeHomeView()
    #expect(view.estimatedDeliveryMinutes("30-45 min") == 30)
}

@Test("estimatedDeliveryMinutes returns Int.max for nil or non-numeric input")
@MainActor
func estimatedDeliveryMinutesMaxForMissingOrGarbageInput() {
    let view = makeHomeView()
    #expect(view.estimatedDeliveryMinutes(nil) == Int.max)
    #expect(view.estimatedDeliveryMinutes("indisponível") == Int.max)
}

@Test("formatDistance shows meters below 1km and kilometers at or above 1km")
@MainActor
func formatDistanceSwitchesUnitsAtOneKm() {
    let view = makeHomeView()
    #expect(view.formatDistance(0.5) == "500 m")
    #expect(view.formatDistance(1.0) == "1.0 km")
    #expect(view.formatDistance(2.3) == "2.3 km")
    #expect(view.formatDistance(nil) == "Distância indisponível")
}