//
//  KoreanFontModifier.swift
//  SodaLive
//
//  Created by klaus on 1/23/26.
//

import SwiftUI

struct KoreanFontModifier: ViewModifier {
    @Environment(\.locale) private var locale
    let size: CGFloat
    let weight: SwiftUI.Font.Weight

    private func resolvedLanguageCode() -> String? {
        if let raw = UserDefaults.standard.string(forKey: "app.language"),
           let option = LanguageOption(rawValue: raw),
           option != .system {
            return option.rawValue
        }
        return locale.language.languageCode?.identifier
    }
    
    func body(content: Content) -> some View {
        if resolvedLanguageCode() == "ko" {
            let name: String = switch weight {
            case .bold: "Pretendard-Bold"
            case .medium: "Pretendard-Medium"
            case .light: "Pretendard-Light"
            default: "Pretendard-Regular"
            }
            content.font(.custom(name, size: size))
        } else {
            content.font(.system(size: size, weight: weight))
        }
    }
}

extension View {
    func appFont(size: CGFloat, weight: SwiftUI.Font.Weight = .regular) -> some View {
        self.modifier(KoreanFontModifier(size: size, weight: weight))
    }
}