namespace MiaoJiZhang.Domain.Enums;

public enum AiQuotaPeriod
{
    Day = 0,
    Week = 1,
    Month = 2,
}

/// <summary>App 模式（决策：双模式）</summary>
public enum AppMode
{
    /// <summary>普通记账模式</summary>
    Normal = 0,
    /// <summary>全 AI 模式</summary>
    AiFirst = 1,
}

/// <summary>账单类型</summary>
public enum TransactionType
{
    Expense = 0,
    Income = 1,
    Transfer = 2,
}

public enum TransferDirection
{
    In = 0,
    Out = 1,
}

public static class TransactionTypeRules
{
    public static bool IsExpense(this TransactionType type, TransferDirection? direction = null) =>
        type == TransactionType.Expense ||
        type == TransactionType.Transfer && direction == TransferDirection.Out;

    public static bool IsIncome(this TransactionType type, TransferDirection? direction = null) =>
        type == TransactionType.Income ||
        type == TransactionType.Transfer && direction == TransferDirection.In;

    public static TransactionType CategoryType(
        this TransactionType type,
        TransferDirection? direction = null) => type == TransactionType.Transfer
        ? direction == TransferDirection.In ? TransactionType.Income : TransactionType.Expense
        : type;

    public static string ToWire(this TransactionType type) => type switch
    {
        TransactionType.Income => "income",
        TransactionType.Transfer => "transfer",
        _ => "expense",
    };

    public static string? ToWire(this TransferDirection? direction) => direction switch
    {
        TransferDirection.In => "in",
        TransferDirection.Out => "out",
        _ => null,
    };
}

/// <summary>账单来源（决策：AI 记账可追溯）</summary>
public enum TransactionSource
{
    Manual = 0,
    AiChat = 1,
    Voice = 2,
    ReceiptOcr = 3,
    Screenshot = 4,
    Accessibility = 5,
    Notification = 6,
    RecognitionAi = 7,
    LocalOcr = 8,
}

public static class TransactionSourceRules
{
    public static readonly TransactionSource[] AiAssisted =
    [
        TransactionSource.AiChat,
        TransactionSource.Voice,
        TransactionSource.ReceiptOcr,
        TransactionSource.Screenshot,
        TransactionSource.RecognitionAi,
    ];

    public static bool IsAiAssisted(this TransactionSource source) =>
        source is TransactionSource.AiChat
            or TransactionSource.Voice
            or TransactionSource.ReceiptOcr
            or TransactionSource.Screenshot
            or TransactionSource.RecognitionAi;
}

/// <summary>聊天消息角色</summary>
public enum ChatRole
{
    User = 0,
    Assistant = 1,
    System = 2,
}

/// <summary>聊天消息类型</summary>
public enum ChatMessageType
{
    Text = 0,
    Sticker = 1,
    BillCard = 2,
    ReportCard = 3,
    ContextBoundary = 4,
}