feat: add Shared/ folder with merged source files

3 files changed, 179 insertions, 0 deletions

diff --git a/Shared/Models/Season.swift b/Shared/Models/Season.swift
new file mode 100644
index 0000000..c956fed
--- /dev/null
+++ b/Shared/Models/Season.swift
@@ -0,0 +1,49 @@
+import SwiftUI
+
+enum Season: String, Codable {
+    case spring
+    case summer
+    case autumn
+    case winter
+
+    var displayName: String {
+        switch self {
+        case .spring: return "Spring"
+        case .summer: return "Summer"
+        case .autumn: return "Autumn"
+        case .winter: return "Winter"
+        }
+    }
+
+    var description: String {
+        switch self {
+        case .spring: return "Day and night are approximately equal length"
+        case .summer: return "Longest day of the year"
+        case .autumn: return "Day and night are approximately equal length"
+        case .winter: return "Shortest day of the year"
+        }
+    }
+
+    var colorLight: Color {
+        switch self {
+        case .spring: return Color(red: 0.298, green: 0.686, blue: 0.314)
+        case .summer: return Color(red: 1.0, green: 0.761, blue: 0.039)
+        case .autumn: return Color(red: 1.0, green: 0.596, blue: 0.0)
+        case .winter: return Color(red: 0.129, green: 0.588, blue: 0.953)
+        }
+    }
+
+    var assetName: String {
+        return "Season\(displayName)"
+    }
+
+    static func fromDate(_ date: Date) -> Season {
+        let month = Calendar.current.component(.month, from: date)
+        switch month {
+        case 3, 4, 5: return .spring
+        case 6, 7, 8: return .summer
+        case 9, 10, 11: return .autumn
+        default: return .winter
+        }
+    }
+}
diff --git a/Shared/Models/SolsticeData.swift b/Shared/Models/SolsticeData.swift
new file mode 100644
index 0000000..9285aad
--- /dev/null
+++ b/Shared/Models/SolsticeData.swift
@@ -0,0 +1,96 @@
+import Foundation
+
+class SolsticeData {
+    static let shared = SolsticeData()
+
+    private let events: [SolsticeEvent]
+
+    private init() {
+        var allEvents: [SolsticeEvent] = []
+
+        // 2025
+        allEvents.append(SolsticeEvent(name: "Vårjevndøgn 2025", date: SolsticeData.dateFromUTC(year: 2025, month: 3, day: 20, hour: 9, minute: 1), season: .spring))
+        allEvents.append(SolsticeEvent(name: "Sommersolverv 2025", date: SolsticeData.dateFromUTC(year: 2025, month: 6, day: 20, hour: 14, minute: 42), season: .summer))
+        allEvents.append(SolsticeEvent(name: "Høstjevndøgn 2025", date: SolsticeData.dateFromUTC(year: 2025, month: 9, day: 22, hour: 18, minute: 20), season: .autumn))
+        allEvents.append(SolsticeEvent(name: "Vintersolverv 2025", date: SolsticeData.dateFromUTC(year: 2025, month: 12, day: 21, hour: 15, minute: 3), season: .winter))
+
+        // 2026
+        allEvents.append(SolsticeEvent(name: "Vårjevndøgn 2026", date: SolsticeData.dateFromUTC(year: 2026, month: 3, day: 20, hour: 14, minute: 46), season: .spring))
+        allEvents.append(SolsticeEvent(name: "Sommersolverv 2026", date: SolsticeData.dateFromUTC(year: 2026, month: 6, day: 21, hour: 8, minute: 25), season: .summer))
+        allEvents.append(SolsticeEvent(name: "Høstjevndøgn 2026", date: SolsticeData.dateFromUTC(year: 2026, month: 9, day: 23, hour: 0, minute: 6), season: .autumn))
+        allEvents.append(SolsticeEvent(name: "Vintersolverv 2026", date: SolsticeData.dateFromUTC(year: 2026, month: 12, day: 21, hour: 20, minute: 50), season: .winter))
+
+        // 2027
+        allEvents.append(SolsticeEvent(name: "Vårjevndøgn 2027", date: SolsticeData.dateFromUTC(year: 2027, month: 3, day: 20, hour: 20, minute: 25), season: .spring))
+        allEvents.append(SolsticeEvent(name: "Sommersolverv 2027", date: SolsticeData.dateFromUTC(year: 2027, month: 6, day: 21, hour: 14, minute: 11), season: .summer))
+        allEvents.append(SolsticeEvent(name: "Høstjevndøgn 2027", date: SolsticeData.dateFromUTC(year: 2027, month: 9, day: 23, hour: 6, minute: 2), season: .autumn))
+        allEvents.append(SolsticeEvent(name: "Vintersolverv 2027", date: SolsticeData.dateFromUTC(year: 2027, month: 12, day: 22, hour: 2, minute: 43), season: .winter))
+
+        // 2028
+        allEvents.append(SolsticeEvent(name: "Vårjevndøgn 2028", date: SolsticeData.dateFromUTC(year: 2028, month: 3, day: 20, hour: 2, minute: 17), season: .spring))
+        allEvents.append(SolsticeEvent(name: "Sommersolverv 2028", date: SolsticeData.dateFromUTC(year: 2028, month: 6, day: 20, hour: 20, minute: 2), season: .summer))
+        allEvents.append(SolsticeEvent(name: "Høstjevndøgn 2028", date: SolsticeData.dateFromUTC(year: 2028, month: 9, day: 22, hour: 11, minute: 45), season: .autumn))
+        allEvents.append(SolsticeEvent(name: "Vintersolverv 2028", date: SolsticeData.dateFromUTC(year: 2028, month: 12, day: 21, hour: 8, minute: 20), season: .winter))
+
+        // 2029
+        allEvents.append(SolsticeEvent(name: "Vårjevndøgn 2029", date: SolsticeData.dateFromUTC(year: 2029, month: 3, day: 20, hour: 8, minute: 1), season: .spring))
+        allEvents.append(SolsticeEvent(name: "Sommersolverv 2029", date: SolsticeData.dateFromUTC(year: 2029, month: 6, day: 21, hour: 1, minute: 48), season: .summer))
+        allEvents.append(SolsticeEvent(name: "Høstjevndøgn 2029", date: SolsticeData.dateFromUTC(year: 2029, month: 9, day: 22, hour: 17, minute: 37), season: .autumn))
+        allEvents.append(SolsticeEvent(name: "Vintersolverv 2029", date: SolsticeData.dateFromUTC(year: 2029, month: 12, day: 21, hour: 14, minute: 14), season: .winter))
+
+        // 2030
+        allEvents.append(SolsticeEvent(name: "Vårjevndøgn 2030", date: SolsticeData.dateFromUTC(year: 2030, month: 3, day: 20, hour: 13, minute: 51), season: .spring))
+        allEvents.append(SolsticeEvent(name: "Sommersolverv 2030", date: SolsticeData.dateFromUTC(year: 2030, month: 6, day: 21, hour: 7, minute: 31), season: .summer))
+        allEvents.append(SolsticeEvent(name: "Høstjevndøgn 2030", date: SolsticeData.dateFromUTC(year: 2030, month: 9, day: 22, hour: 23, minute: 27), season: .autumn))
+        allEvents.append(SolsticeEvent(name: "Vintersolverv 2030", date: SolsticeData.dateFromUTC(year: 2030, month: 12, day: 21, hour: 20, minute: 9), season: .winter))
+
+        self.events = allEvents.sorted { $0.date < $1.date }
+    }
+
+    private static func dateFromUTC(year: Int, month: Int, day: Int, hour: Int, minute: Int) -> Date {
+        var components = DateComponents()
+        components.year = year
+        components.month = month
+        components.day = day
+        components.hour = hour
+        components.minute = minute
+        components.second = 0
+        components.timeZone = TimeZone(abbreviation: "UTC")
+        return Calendar(identifier: .gregorian).date(from: components) ?? Date()
+    }
+
+    func nextEvent(from now: Date = Date()) -> SolsticeEvent? {
+        return events.first { $0.date > now }
+    }
+
+    func upcomingEvents(count: Int, from now: Date = Date()) -> [SolsticeEvent] {
+        let futureEvents = events.filter { $0.date > now }
+        return Array(futureEvents.prefix(count))
+    }
+
+    func progressToNextEvent(from now: Date = Date()) -> (elapsed: Int, total: Int)? {
+        guard let _ = nextEvent(from: now) else { return nil }
+
+        let today = Calendar.current.startOfDay(for: now)
+
+        guard let previousEventIndex = events.firstIndex(where: { $0.date > now }) else {
+            return nil
+        }
+
+        guard previousEventIndex > 0 else { return nil }
+
+        let nextEvent = events[previousEventIndex]
+        let previousEvent = events[previousEventIndex - 1]
+
+        let previousEventDay = Calendar.current.startOfDay(for: previousEvent.date)
+        let eventDay = Calendar.current.startOfDay(for: nextEvent.date)
+
+        let elapsedComponents = Calendar.current.dateComponents([.day], from: previousEventDay, to: today)
+        let totalComponents = Calendar.current.dateComponents([.day], from: previousEventDay, to: eventDay)
+
+        let elapsed = max(0, elapsedComponents.day ?? 0)
+        let total = max(1, totalComponents.day ?? 1)
+
+        return (elapsed: elapsed, total: total)
+    }
+}
diff --git a/Shared/Models/SolsticeEvent.swift b/Shared/Models/SolsticeEvent.swift
new file mode 100644
index 0000000..b28cba8
--- /dev/null
+++ b/Shared/Models/SolsticeEvent.swift
@@ -0,0 +1,34 @@
+import Foundation
+
+struct SolsticeEvent: Identifiable, Codable {
+    let id: UUID
+    let name: String
+    let date: Date
+    let season: Season
+
+    init(name: String, date: Date, season: Season) {
+        self.id = UUID()
+        self.name = name
+        self.date = date
+        self.season = season
+    }
+
+    func localDateTime() -> Date {
+        let utcCalendar = Calendar(identifier: .gregorian)
+        let utcComponents = utcCalendar.dateComponents([.year, .month, .day, .hour, .minute, .second], from: date)
+        let timeZone = TimeZone.current
+        let offset = timeZone.secondsFromGMT(for: date)
+        var localCalendar = Calendar.current
+        localCalendar.timeZone = timeZone
+        var localComponents = utcComponents
+        localComponents.second = (localComponents.second ?? 0) + offset
+        return localCalendar.date(from: localComponents) ?? date
+    }
+
+    func daysUntil(from now: Date = Date()) -> Int {
+        let today = Calendar.current.startOfDay(for: now)
+        let eventDay = Calendar.current.startOfDay(for: date)
+        let components = Calendar.current.dateComponents([.day], from: today, to: eventDay)
+        return max(0, components.day ?? 0)
+    }
+}