//
//  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)
    }

    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
        for action in [reading, english, running, pushup, water] {
            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)))
            }
        }
        // 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)!
        )
        toeic.showsOnMain = true
        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
        )
        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)
    }
}
#endif