import SwiftUI
import SwiftData

struct HabitRowView: View {
    @Environment(\.modelContext) private var context
    @Bindable var habit: Habit

    var body: some View {
        HStack(spacing: 12) {
            Image(systemName: habit.symbolName)
                .font(.title2)
                .foregroundStyle(Color(hex: habit.colorHex))
                .frame(width: 32)

            VStack(alignment: .leading, spacing: 2) {
                Text(habit.name)
                    .font(.headline)
                if habit.currentStreak > 0 {
                    Text(streakText)
                        .font(.caption)
                        .foregroundStyle(.secondary)
                }
            }

            Spacer()

            Button {
                context.toggleCompletion(for: habit, on: .now)
            } label: {
                Image(systemName: habit.isCompletedToday ? "checkmark.circle.fill" : "circle")
                    .font(.title)
                    .foregroundStyle(habit.isCompletedToday ? Color(hex: habit.colorHex) : Color.secondary)
            }
            .buttonStyle(.borderless)
        }
        .padding(.vertical, 4)
    }

    private var streakText: String {
        let days = habit.currentStreak
        let unit = days == 1 ? "Tag" : "Tage"
        return "\(days) \(unit) Streak 🔥"
    }
}