import Foundation
import Testing
@testable import Cable

struct ComponentLibraryItemTests {

    @Test func localizedNameUsesExactLocaleMatch() async throws {
        let item = ComponentLibraryItem(
            id: "component-1",
            name: "Anchor Winch",
            translations: ["de_DE": "Ankerwinde"],
            voltageIn: nil,
            voltageOut: nil,
            watt: nil,
            dutyCyclePercent: nil,
            defaultUtilizationFactorPercent: nil,
            iconURL: nil,
            affiliateLinks: []
        )

        let german = Foundation.Locale(identifier: "de_DE")
        #expect(item.localizedName(for: german) == "Ankerwinde")
    }

    @Test func localizedNameFallsBackToBaseName() async throws {
        let item = ComponentLibraryItem(
            id: "component-2",
            name: "Anchor Winch",
            translations: [:],
            voltageIn: nil,
            voltageOut: nil,
            watt: nil,
            dutyCyclePercent: nil,
            defaultUtilizationFactorPercent: nil,
            iconURL: nil,
            affiliateLinks: []
        )

        let french = Foundation.Locale(identifier: "fr_FR")
        #expect(item.localizedName(for: french) == "Anchor Winch")
    }

    @Test func localizedNameDoesNotFallbackToSecondaryLanguages() async throws {
        let item = ComponentLibraryItem(
            id: "component-5",
            name: "Anchor Winch",
            translations: [
                "es_ES": "Molinete",
                "de_DE": "Ankerwinde"
            ],
            voltageIn: nil,
            voltageOut: nil,
            watt: nil,
            dutyCyclePercent: nil,
            defaultUtilizationFactorPercent: nil,
            iconURL: nil,
            affiliateLinks: []
        )

        let languages = ["fr-FR", "de-DE", "es-ES"]
        #expect(item.localizedName(usingPreferredLanguages: languages) == nil)
    }

    @Test func localizedNameUsesLanguageOnlyMatch() async throws {
        let item = ComponentLibraryItem(
            id: "component-3",
            name: "Anchor Winch",
            translations: ["es": "Molinete"],
            voltageIn: nil,
            voltageOut: nil,
            watt: nil,
            dutyCyclePercent: nil,
            defaultUtilizationFactorPercent: nil,
            iconURL: nil,
            affiliateLinks: []
        )

        let spanishMexico = Foundation.Locale(identifier: "es_MX")
        #expect(item.localizedName(for: spanishMexico) == "Molinete")
    }

    @Test func localizedNameFallsBackToMatchingLanguageFromRegionalEntry() async throws {
        let item = ComponentLibraryItem(
            id: "component-6",
            name: "Anchor Winch",
            translations: ["de_DE": "Ankerwinde"],
            voltageIn: nil,
            voltageOut: nil,
            watt: nil,
            dutyCyclePercent: nil,
            defaultUtilizationFactorPercent: nil,
            iconURL: nil,
            affiliateLinks: []
        )

        let germanSwitzerland = Foundation.Locale(identifier: "de_CH")
        #expect(item.localizedName(for: germanSwitzerland) == "Ankerwinde")
    }

    @Test func localizedNameHandlesHyphenatedKeys() async throws {
        let item = ComponentLibraryItem(
            id: "component-4",
            name: "Anchor Winch",
            translations: ["fr-FR": "Guindeau"],
            voltageIn: nil,
            voltageOut: nil,
            watt: nil,
            dutyCyclePercent: nil,
            defaultUtilizationFactorPercent: nil,
            iconURL: nil,
            affiliateLinks: []
        )

        let french = Foundation.Locale(identifier: "fr_FR")
        #expect(item.localizedName(for: french) == "Guindeau")
    }

    @Test func normalizedDutyCycleTreatsZeroAsFullUsage() async throws {
        let item = ComponentLibraryItem(
            id: "component-7",
            name: "Compressor",
            translations: [:],
            voltageIn: nil,
            voltageOut: nil,
            watt: nil,
            dutyCyclePercent: 0,
            defaultUtilizationFactorPercent: nil,
            iconURL: nil,
            affiliateLinks: []
        )

        #expect(item.normalizedDutyCyclePercent == 100)
    }

    @Test func defaultDailyUsageHoursConvertsPercentToHours() async throws {
        let item = ComponentLibraryItem(
            id: "component-8",
            name: "Heater",
            translations: [:],
            voltageIn: nil,
            voltageOut: nil,
            watt: nil,
            dutyCyclePercent: nil,
            defaultUtilizationFactorPercent: 50,
            iconURL: nil,
            affiliateLinks: []
        )

        #expect(item.defaultDailyUsageHours == 12)
    }
}