//
//  Bible_WeekTests.swift
//  Bible-WeekTests
//
//  Testes do Plano de 180 Dias e do lembrete diário (lógica pura,
//  sem depender do UNUserNotificationCenter real).
//

import Foundation
import Testing
import UserNotifications
@testable import Bible_Week

// MARK: - Cronograma do plano

struct PlanScheduleTests {

    @Test func planHas180Days() {
        #expect(PlanSchedule.days.count == 180)
        #expect(PlanSchedule.days.first?.day == 1)
        #expect(PlanSchedule.days.last?.day == 180)
    }

    @Test func everyDayHasAllThreeTracksWithChapters() {
        for day in PlanSchedule.days {
            #expect(day.readings.count == PlanTrack.allCases.count)
            for reading in day.readings {
                #expect(!reading.chapters.isEmpty, "Dia \(day.day), trilha \(reading.track) sem capítulos")
                #expect(!reading.label.isEmpty)
            }
        }
    }

    /// Cada trilha deve cobrir todos os seus capítulos, em ordem canônica,
    /// sem lacunas e sem repetições — a Bíblia inteira em 180 dias.
    @Test func scheduleCoversEntireCanonExactlyOnce() {
        for track in PlanTrack.allCases {
            let scheduled = PlanSchedule.days.flatMap { day in
                day.reading(for: track)?.chapters ?? []
            }
            let expected = track.books.flatMap { book in
                (1...book.chapterCount).map {
                    ChapterRef(bookCode: book.code, bookName: book.name, chapter: $0)
                }
            }
            #expect(scheduled == expected, "Trilha \(track) não cobre o cânon exatamente")
        }
        let total = PlanTrack.allCases.reduce(0) { sum, track in
            sum + track.books.reduce(0) { $0 + $1.chapterCount }
        }
        #expect(total == 1189)
    }

    @Test func labelsCollapseConsecutiveChaptersIntoRanges() {
        let reading = TrackReading(track: .history, chapters: [
            ChapterRef(bookCode: "GEN", bookName: "Gênesis", chapter: 34),
            ChapterRef(bookCode: "GEN", bookName: "Gênesis", chapter: 35),
            ChapterRef(bookCode: "GEN", bookName: "Gênesis", chapter: 36),
        ])
        #expect(reading.label == "Gênesis 34–36")

        let crossBook = TrackReading(track: .history, chapters: [
            ChapterRef(bookCode: "GEN", bookName: "Gênesis", chapter: 50),
            ChapterRef(bookCode: "EXO", bookName: "Êxodo", chapter: 1),
        ])
        #expect(crossBook.label == "Gênesis 50 e Êxodo 1")
    }
}

// MARK: - Estado do plano

struct ReadingPlanStateTests {

    @Test func currentDayAdvancesWhenAllTracksCompleted() {
        let plan = ReadingPlanState()
        #expect(plan.currentDay == 1)

        // Concluir só uma trilha não avança o dia.
        plan.setCompleted(true, day: 1, track: .history)
        #expect(plan.currentDay == 1)

        plan.setCompleted(true, day: 1, track: .wisdom)
        plan.setCompleted(true, day: 1, track: .newTestament)
        #expect(plan.currentDay == 2)
        #expect(plan.completedDaysCount == 1)
    }

    @Test func settingCompletedTwiceDoesNotDuplicate() {
        let plan = ReadingPlanState()
        plan.setCompleted(true, day: 1, track: .history)
        plan.setCompleted(true, day: 1, track: .history)
        #expect(plan.completedKeys.count == 1)

        plan.setCompleted(false, day: 1, track: .history)
        #expect(plan.completedKeys.isEmpty)
    }

    @Test func changingReminderTimeReplacesPreviousValue() {
        let plan = ReadingPlanState()
        #expect(plan.reminderHour == 20)
        #expect(plan.reminderMinute == 0)

        plan.reminderHour = 7
        plan.reminderMinute = 30
        #expect(plan.reminderTimeText == "07:30")
    }

    @Test func pausePreservesReminderPreference() {
        let plan = ReadingPlanState()
        plan.reminderEnabled = true
        plan.reminderHour = 7
        plan.reminderMinute = 30

        plan.isPaused = true
        #expect(plan.reminderEnabled)
        #expect(plan.reminderHour == 7)
        #expect(plan.reminderMinute == 30)

        plan.isPaused = false
        #expect(plan.reminderEnabled)
        #expect(plan.reminderTimeText == "07:30")
    }

    @Test func planCompletionDetection() {
        let plan = ReadingPlanState()
        for day in 1...PlanSchedule.totalDays {
            for track in PlanTrack.allCases {
                plan.setCompleted(true, day: day, track: track)
            }
        }
        #expect(plan.isCompleted)
        #expect(plan.completedDaysCount == 180)
        #expect(plan.progress == 1.0)
    }

    @Test func restartClearsProgressButKeepsReminderPreference() {
        let plan = ReadingPlanState()
        plan.reminderEnabled = true
        plan.reminderHour = 20
        plan.reminderMinute = 0
        plan.setCompleted(true, day: 1, track: .history)
        plan.isPaused = true

        plan.restart()

        #expect(plan.completedKeys.isEmpty)
        #expect(plan.currentDay == 1)
        #expect(!plan.isPaused)
        // Preferências de lembrete sobrevivem ao reinício.
        #expect(plan.reminderEnabled)
        #expect(plan.reminderTimeText == "20:00")
    }
}

// MARK: - Conteúdo do lembrete

struct ReminderContentTests {

    @Test func contentIncludesJourneyDayWhenAvailable() {
        let content = ReadingReminderService.makeContent(currentDay: 34, soundEnabled: true)
        #expect(content.title.contains("34"))
        #expect(!content.body.isEmpty)
        #expect(content.sound != nil)
    }

    @Test func contentFallsBackToDefaultTitleWithoutDay() {
        let content = ReadingReminderService.makeContent(currentDay: nil, soundEnabled: true)
        #expect(content.title == "📖 Sua leitura de hoje")
    }

    @Test func soundOffProducesSilentNotification() {
        let content = ReadingReminderService.makeContent(currentDay: 1, soundEnabled: false)
        #expect(content.sound == nil)
    }

    @Test func userInfoRoutesToReadingPlanToday() {
        let content = ReadingReminderService.makeContent(currentDay: 1, soundEnabled: true)
        #expect(content.userInfo[NotificationUserInfo.destinationKey] as? String == NotificationUserInfo.destinationReadingPlan)
        #expect(content.userInfo[NotificationUserInfo.planIdKey] as? String == "bible-180")
        #expect(content.userInfo[NotificationUserInfo.screenKey] as? String == "today")
    }

    @Test func messagesAvoidPressuringLanguage() {
        for message in ReadingReminderService.motivationalMessages {
            #expect(!message.lowercased().contains("streak"))
            #expect(!message.lowercased().contains("sequência"))
            #expect(!message.lowercased().contains("esqueceu"))
            #expect(!message.lowercased().contains("perdendo"))
        }
    }
}