//
// WorkoutLogCardView.swift
// Workouts
//
// Created by rzen on 7/22/25 at 9:56 PM.
//
// Copyright 2025 Rouslan Zenetl. All Rights Reserved.
//

import SwiftUI

struct WorkoutLogCardView: View {
    let log: WorkoutLog
    
    var body: some View {
        VStack(alignment: .leading, spacing: 8) {
            Text(log.exerciseName)
                .font(.headline)
                .lineLimit(1)
            
            Text(getStatusText(for: log))
                .font(.caption)
                .foregroundStyle(Color.accentColor)
            
            HStack(spacing: 12) {
                Text("\(log.weight) lbs")
                
                Spacer()
                
                Text("\(log.sets) × \(log.reps)")
            }
        }
    }
    
    private func getStatusText(for log: WorkoutLog) -> String {
        guard let status = log.status else {
            return "Not Started"
        }
        
        if status == .inProgress, let currentStateIndex = log.currentStateIndex {
            let currentSet = getCurrentSetNumber(stateIndex: currentStateIndex, totalSets: log.sets)
            if currentSet > 0 {
                return "In Progress, Set #\(currentSet)"
            }
        }
        
        return status.name
    }
    
    private func getCurrentSetNumber(stateIndex: Int, totalSets: Int) -> Int {
        // Exercise states are structured as: intro(0) → set1(1) → rest1(2) → set2(3) → rest2(4) → ... → done
        // For each set number n, set state index = 2n-1, rest state index = 2n
        
        if stateIndex <= 0 {
            return 0 // intro or invalid
        }
        
        // Check if we're in a rest state (even indices > 0)
        let isRestState = stateIndex > 0 && stateIndex % 2 == 0
        
        if isRestState {
            // During rest, show the next set number
            let nextSetNumber = (stateIndex / 2) + 1
            return min(nextSetNumber, totalSets)
        } else {
            // During set, show current set number
            let currentSetNumber = (stateIndex + 1) / 2
            return min(currentSetNumber, totalSets)
        }
    }
}