namespace WxAgent.Core;

public static class WechatSendConfirmation
{
    public static bool IsMentionToken(string text) => text.TrimEnd() == "\uFFFC";

    public static bool MatchesMention(ChatMessageSnapshot message, IReadOnlySet<string> baseline,
        string memberName, string? body)
    {
        if (baseline.Contains(message.Fingerprint) || message.Type != ChatMessageType.Text) return false;
        var expected = "@" + memberName + (string.IsNullOrEmpty(body) ? "" : " " + body);
        return string.Equals(NormalizeWhitespace(message.Text), NormalizeWhitespace(expected), StringComparison.Ordinal);
    }

    private static string NormalizeWhitespace(string text) =>
        string.Join(' ', text.Split((char[]?)null, StringSplitOptions.RemoveEmptyEntries));

    // UIA proves only a fresh matching visible row, not delivery or sender identity.
    public static bool Matches(ChatMessageSnapshot message, IReadOnlySet<string> baseline,
        ChatMessageType type, string? expectedText)
    {
        if (baseline.Contains(message.Fingerprint) || message.Type != type) return false;
        if (expectedText is null) return true;
        return type == ChatMessageType.File
            ? message.Text.Split('\n').Any(line => string.Equals(line.TrimEnd('\r'), expectedText, StringComparison.Ordinal))
            : string.Equals(message.Text, expectedText, StringComparison.Ordinal);
    }
}