using ArcaneLibs.Extensions;
using LibMatrix.EventTypes.Spec;

namespace LibMatrix.Helpers;

public static class MessageFormatter {
    public static RoomMessageEventContent FormatError(string error) {
        return new RoomMessageEventContent(body: error, messageType: "m.text") {
            FormattedBody = $"<font color=\"#FF0000\">{error}: {error}</font>",
            Format = "org.matrix.custom.html"
        };
    }

    public static RoomMessageEventContent FormatException(string error, Exception e) {
        return new RoomMessageEventContent(body: $"{error}: {e.Message}", messageType: "m.text") {
            FormattedBody = $"<font color=\"#FF0000\">{error}: <pre>{e.Message}</pre></font>",
            Format = "org.matrix.custom.html"
        };
    }

    public static RoomMessageEventContent FormatSuccess(string text) {
        return new RoomMessageEventContent(body: text, messageType: "m.text") {
            FormattedBody = $"<font color=\"#00FF00\">{text}</font>",
            Format = "org.matrix.custom.html"
        };
    }

    public static RoomMessageEventContent FormatSuccessJson(string text, object data) {
        return new RoomMessageEventContent(body: text, messageType: "m.text") {
            FormattedBody = $"<font color=\"#00FF00\">{text}: <pre>{data.ToJson(ignoreNull: true)}</pre></font>",
            Format = "org.matrix.custom.html"
        };
    }

    public static string HtmlFormatMention(string id, string? displayName = null) {
        return $"<a href=\"https://matrix.to/#/{id}\">{displayName ?? id}</a>";
    }

    public static string HtmlFormatMessageLink(string roomId, string eventId, string[]? servers = null, string? displayName = null) {
        if (servers is not { Length: > 0 }) servers = new[] { roomId.Split(':', 2)[1] };
        return $"<a href=\"https://matrix.to/#/{roomId}/{eventId}?via={string.Join("&via=", servers)}\">{displayName ?? eventId}</a>";
    }

    #region Extension functions

    public static RoomMessageEventContent ToMatrixMessage(this Exception e, string error) => FormatException(error, e);

    #endregion
}