using System;
using System.IO;
using System.Linq;
using Alkami.Ops.SecretServer.Enum;
using Alkami.Ops.SecretServer.SSWebService;

namespace Alkami.Ops.SecretServer.Model
{
    /// <summary>
    /// Represents a Certificate or SSL Certificate secret
    /// </summary>
    public class Certificate : SecretBase
    {
        /// <summary>
        /// The Certificate name from the "Certificate Name" field on the secret
        /// </summary>
        public string Name => SecretItems.FirstOrDefault(p => string.Equals(p.FieldName, "Certificate Name", StringComparison.OrdinalIgnoreCase))?.Value;

        /// <summary>
        /// The Certificate password from the "Import Password" field on the secret
        /// </summary>
        public string Password => SecretItems.FirstOrDefault(p => string.Equals(p.FieldName, "Import Password", StringComparison.OrdinalIgnoreCase) && p.IsPassword)?.Value;

        /// <summary>
        /// The FileID of the attachment on the secret from the "Pfx File" field
        /// </summary>
        public int? FileId => SecretItems.FirstOrDefault(p => string.Equals(p.FieldName, "Pfx File", StringComparison.OrdinalIgnoreCase) && p.IsFile)?.Id;

        /// <summary>
        /// The secret type
        /// </summary>
        /// <remarks>
        /// Returns <seealso cref="SecretType"/>.Certificate
        /// </remarks>
        public new SecretType SecretType => SecretType.Certificate;

        /// <summary>
        /// The FileName of the attachment.  Added externally from a subsequent call to SecretServer
        /// </summary>
        public string FileName { get; set; }

        /// <summary>
        /// The FileAttachment as a byte array.  Added externally from a subsequent call to SecretServer
        /// </summary>
        public byte[] FileAttachment { get; set; }

        /// <summary>
        /// Saves the <see cref="FileAttachment"/> to disk
        /// </summary>
        /// <param name="outputPath">The path to save the file to.  The FileName is appended from <seealso cref="FileName"/></param>
        /// <returns></returns>
        public string SaveFileToDisk(string outputPath)
        {
            var outFile = Path.Combine(outputPath, FileName);
            File.WriteAllBytes(outFile, FileAttachment);

            return outFile;
        }

        /// <summary>
        /// Instantiates a new instance of the Certificate class
        /// </summary>
        /// <param name="secret"></param>
        public Certificate(Secret secret) : base(secret)
        {
        }
    }
}