//
//  DebugSeed.swift
//  Haru_Danim
//
//  개발 검증용 데모 데이터. 런치 인자 `-seedDemo YES`가 있을 때만 동작. (DEBUG 전용)
//

#if DEBUG
import Foundation
import SwiftData

enum DebugSeed {
    /// `-autoStart <행동이름>` 런치 인자가 있으면 해당 행동의 시간 측정을 시작 (Live Activity 검증용)
    static func autoStartIfRequested(context: ModelContext) {
        guard let name = UserDefaults.standard.string(forKey: "autoStart") else { return }
        let descriptor = FetchDescriptor<Action>(predicate: #Predicate { $0.name == name })
        guard let action = try? context.fetch(descriptor).first else { return }
        if action.runningSession == nil {
            context.insert(TimeSession(action: action, startAt: .now))
        }
        LiveActivityManager.sync(context: context)
    }

    /// `-endGoalYesterday <목표 제목>` 런치 인자: 해당 목표의 종료일을 어제로 변경
    /// (목표 탭을 열지 않아도 실행 시점에 자동 판정되는지 검증용)
    static func endGoalYesterdayIfRequested(context: ModelContext) {
        guard let title = UserDefaults.standard.string(forKey: "endGoalYesterday") else { return }
        let descriptor = FetchDescriptor<Goal>(predicate: #Predicate { $0.title == title })
        guard let goal = try? context.fetch(descriptor).first else { return }
        goal.endDate = Calendar.current.date(byAdding: .day, value: -1, to: .now)
        try? context.save()
    }

    /// `-pinGoals <N>` 런치 인자: 생성순으로 목표 N개를 모음 탭에 표시 (다중 목표 카드 검증용)
    static func pinGoalsIfRequested(context: ModelContext) {
        let n = UserDefaults.standard.integer(forKey: "pinGoals")
        guard n > 0 else { return }
        let descriptor = FetchDescriptor<Goal>(sortBy: [SortDescriptor(\.createdAt)])
        guard let goals = try? context.fetch(descriptor) else { return }
        // 노출 목표는 기기별 로컬 설정 (LocalPrefs 참고)
        LocalPrefs.defaults.set(
            LocalPrefs.rawValue(goals.prefix(n).map(\.uuid)),
            forKey: LocalPrefsKeys.pinnedGoals
        )
    }

    static func seedIfRequested(context: ModelContext) {
        guard UserDefaults.standard.bool(forKey: "seedDemo") else { return }
        let existing = (try? context.fetchCount(FetchDescriptor<Action>())) ?? 0
        guard existing == 0 else { return }

        let study = Tag(name: "공부", colorHex: "#4A7A9D")
        let workout = Tag(name: "운동", colorHex: "#9D5B4A")
        let life = Tag(name: "생활", colorHex: "#2F6B4F")
        context.insert(study)
        context.insert(workout)
        context.insert(life)

        let reading = Action(name: "독서", symbolName: "book.fill", trackingType: .time, sortOrder: 0)
        reading.tags = [study]
        reading.isFavorite = true
        reading.promptsForNote = true
        let english = Action(name: "영어 공부", symbolName: "graduationcap.fill", trackingType: .time, sortOrder: 1)
        english.tags = [study]
        let running = Action(name: "달리기", symbolName: "figure.run", trackingType: .time, sortOrder: 2)
        running.tags = [workout]
        let pushup = Action(name: "팔굽혀펴기", symbolName: "dumbbell.fill", trackingType: .count, sortOrder: 3)
        pushup.tags = [workout]
        let water = Action(name: "물 마시기", symbolName: "drop.fill", trackingType: .count, sortOrder: 4)
        water.tags = [life]
        water.promptsForNote = true
        // '이하 유지' 다짐 검증용 (하루 1시간 이하 목표, 일부러 초과하는 날 포함)
        let video = Action(name: "영상 시청", symbolName: "play.rectangle.fill", trackingType: .time, sortOrder: 5)
        video.tags = [life]
        for action in [reading, english, running, pushup, water, video] {
            context.insert(action)
        }

        let now = Date.now
        let cal = Calendar.current
        func at(daysAgo: Int, hour: Int, minute: Int = 0) -> Date {
            let day = cal.date(byAdding: .day, value: -daysAgo, to: now)!
            return cal.date(bySettingHour: hour, minute: minute, second: 0, of: day)!
        }

        // 시간 기록 (며칠치)
        for daysAgo in 0...6 {
            context.insert(TimeSession(action: english, startAt: at(daysAgo: daysAgo, hour: 8), endAt: at(daysAgo: daysAgo, hour: 9, minute: 10)))
            if daysAgo % 2 == 0 {
                context.insert(TimeSession(action: running, startAt: at(daysAgo: daysAgo, hour: 7), endAt: at(daysAgo: daysAgo, hour: 7, minute: 40)))
            }
            if daysAgo % 3 != 0 {
                context.insert(TimeSession(action: reading, startAt: at(daysAgo: daysAgo, hour: 21), endAt: at(daysAgo: daysAgo, hour: 22, minute: 15)))
            }
            // 영상 시청: 짝수 날은 40분(1시간 이하 유지), 홀수 날은 1시간 30분(초과)
            if daysAgo % 2 == 0 {
                context.insert(TimeSession(action: video, startAt: at(daysAgo: daysAgo, hour: 12, minute: 30), endAt: at(daysAgo: daysAgo, hour: 13, minute: 10)))
            } else {
                context.insert(TimeSession(action: video, startAt: at(daysAgo: daysAgo, hour: 12, minute: 30), endAt: at(daysAgo: daysAgo, hour: 14, minute: 0)))
            }
        }
        // 자정을 걸치는 세션 (하루 경계 분할 확인용) + 메모 표시 확인용
        let crossing = TimeSession(action: reading, startAt: at(daysAgo: 1, hour: 23, minute: 20), endAt: at(daysAgo: 0, hour: 0, minute: 40))
        crossing.note = "자기 전에 소설 읽음. 재밌어서 늦게 잠"
        context.insert(crossing)
        // 진행 중 세션
        context.insert(TimeSession(action: reading, startAt: now.addingTimeInterval(-25 * 60)))

        // 횟수 기록
        for daysAgo in 0...6 {
            for i in 0..<(3 + daysAgo % 4) {
                context.insert(CountEntry(action: water, timestamp: at(daysAgo: daysAgo, hour: 9 + i * 2)))
            }
            if daysAgo % 2 == 0 {
                context.insert(CountEntry(action: pushup, timestamp: at(daysAgo: daysAgo, hour: 19), amount: 20))
            }
        }
        // 메모가 달린 횟수 기록 (기록 탭 메모 표시 확인용)
        let notedWater = CountEntry(action: water, timestamp: at(daysAgo: 0, hour: 20))
        notedWater.note = "자기 전 물 한 컵"
        context.insert(notedWater)

        // 목표 + 다짐
        let toeic = Goal(
            title: "토익 700점 이상 받기",
            symbolName: "graduationcap.fill",
            colorHex: "#4A7A9D",
            startDate: cal.date(byAdding: .day, value: -10, to: now)!,
            endDate: cal.date(byAdding: .day, value: 30, to: now)!
        )
        context.insert(toeic)
        let englishQuest = Quest(goal: toeic)
        englishQuest.targetAction = english
        englishQuest.measure = .time
        englishQuest.period = .daily
        englishQuest.targetSeconds = 3600
        englishQuest.direction = .atLeast
        context.insert(englishQuest)

        let health = Goal(
            title: "건강한 생활 습관 만들기",
            symbolName: "heart.fill",
            colorHex: "#2F6B4F",
            startDate: cal.date(byAdding: .day, value: -20, to: now)!,
            endDate: nil
        )
        // 다짐 3개(이하 유지 포함)라 모음 탭 목표 카드 검증에 적합
        health.showsOnMain = true
        context.insert(health)
        let waterQuest = Quest(goal: health)
        waterQuest.targetAction = water
        waterQuest.measure = .count
        waterQuest.period = .daily
        waterQuest.targetCount = 8
        waterQuest.direction = .atLeast
        context.insert(waterQuest)
        let runQuest = Quest(goal: health)
        runQuest.targetAction = running
        runQuest.measure = .time
        runQuest.period = .daily
        runQuest.scheduleMode = .weekdays
        runQuest.weekdays = [2, 4, 6]
        runQuest.targetSeconds = 30 * 60
        runQuest.direction = .atLeast
        context.insert(runQuest)
        // 다짐 4개째: 모음 탭 목표 카드의 '더 보기' 접힘/펼침 검증용
        let pushupQuest = Quest(goal: health)
        pushupQuest.targetAction = pushup
        pushupQuest.measure = .count
        pushupQuest.period = .daily
        pushupQuest.targetCount = 20
        pushupQuest.direction = .atLeast
        context.insert(pushupQuest)
        // '이하 유지' 다짐: 영상 시청 하루 1시간 이하 (달성률 로직 검증용)
        let videoQuest = Quest(goal: health)
        videoQuest.targetAction = video
        videoQuest.measure = .time
        videoQuest.period = .daily
        videoQuest.targetSeconds = 3600
        videoQuest.direction = .atMost
        context.insert(videoQuest)

        // 세 번째 목표 (모음 탭 다중 목표 카드 검증용)
        let habit = Goal(
            title: "매일 밤 독서 습관",
            symbolName: "book.fill",
            colorHex: "#9D5B4A",
            startDate: cal.date(byAdding: .day, value: -5, to: now)!,
            endDate: cal.date(byAdding: .day, value: 60, to: now)!
        )
        context.insert(habit)
        let readingQuest = Quest(goal: habit)
        readingQuest.targetAction = reading
        readingQuest.measure = .time
        readingQuest.period = .daily
        readingQuest.targetSeconds = 45 * 60
        readingQuest.direction = .atLeast
        context.insert(readingQuest)

        // 네 번째 목표 (모음 탭 목표 카드 개수 제한 해제 검증용)
        let run = Goal(
            title: "꾸준한 달리기",
            symbolName: "figure.run",
            colorHex: "#4A7A9D",
            startDate: cal.date(byAdding: .day, value: -14, to: now)!,
            endDate: cal.date(byAdding: .day, value: 45, to: now)!
        )
        context.insert(run)
        let weeklyRunQuest = Quest(goal: run)
        weeklyRunQuest.targetAction = running
        weeklyRunQuest.measure = .time
        weeklyRunQuest.period = .weekly
        weeklyRunQuest.targetSeconds = 2 * 3600
        weeklyRunQuest.direction = .atLeast
        context.insert(weeklyRunQuest)

        // 목표 탭 정렬 순서 부여
        for (index, goal) in [toeic, health, habit, run].enumerated() {
            goal.sortOrder = index
        }

        // 완료된 목표 (완료 목표 분리 화면 검증용 — 달성 1개 + 미달성 1개)
        let sleep = Goal(
            title: "일찍 자기 챌린지",
            symbolName: "moon.zzz.fill",
            colorHex: "#2F6B4F",
            startDate: cal.date(byAdding: .day, value: -60, to: now)!,
            endDate: cal.date(byAdding: .day, value: -30, to: now)!
        )
        sleep.status = .achieved
        sleep.sortOrder = 4
        context.insert(sleep)
        let diet = Goal(
            title: "한 달 다이어트",
            symbolName: "fork.knife",
            colorHex: "#9D5B4A",
            startDate: cal.date(byAdding: .day, value: -50, to: now)!,
            endDate: cal.date(byAdding: .day, value: -20, to: now)!
        )
        diet.status = .notAchieved
        diet.sortOrder = 5
        context.insert(diet)

        // 기기별 로컬 UI 설정 시드: 메모 창 행동, 모음 탭 노출 목표 (LocalPrefs 참고)
        LocalPrefs.setPromptsForNote(reading.uuid, enabled: true)
        LocalPrefs.setPromptsForNote(water.uuid, enabled: true)
        LocalPrefs.defaults.set(
            LocalPrefs.rawValue([health.uuid]),
            forKey: LocalPrefsKeys.pinnedGoals
        )
    }
}
#endif