namespace MoneyMap.Models.Dashboard
{
    /// <summary>
    /// Statistics displayed on the dashboard.
    /// </summary>
    public record DashboardStats(
        int TotalTransactions = 0,
        int Credits = 0,
        int Debits = 0,
        int Uncategorized = 0,
        int Receipts = 0,
        int Cards = 0);

    /// <summary>
    /// Row representing spending in a category.
    /// </summary>
    public class TopCategoryRow
    {
        public string Category { get; set; } = "";
        public decimal TotalSpend { get; set; }
        public int Count { get; set; }
        public decimal PercentageOfTotal { get; set; }
        public decimal AveragePerTransaction { get; set; }
    }

    /// <summary>
    /// Row representing a recent transaction.
    /// </summary>
    public class RecentTransactionRow
    {
        public long Id { get; set; }
        public DateTime Date { get; set; }
        public string Name { get; set; } = "";
        public string Memo { get; set; } = "";
        public decimal Amount { get; set; }
        public string Category { get; set; } = "";
        public string CardLabel { get; set; } = "";
        public int ReceiptCount { get; set; }
    }

    /// <summary>
    /// Spending trends over time.
    /// </summary>
    public class SpendTrends
    {
        public List<string> Labels { get; set; } = new();
        public List<decimal> DebitsAbs { get; set; } = new();
        public List<decimal> Credits { get; set; } = new();
        public List<decimal> Net { get; set; } = new();
        public List<decimal> RunningBalance { get; set; } = new();
    }

    /// <summary>
    /// Complete dashboard data package.
    /// </summary>
    public class DashboardData
    {
        public required DashboardStats Stats { get; init; }
        public required List<TopCategoryRow> TopCategories { get; init; }
        public required List<RecentTransactionRow> RecentTransactions { get; init; }
        public required SpendTrends Trends { get; init; }
    }
}