using System.Text.Json;
using System.Text.Json.Serialization;
using JdeScoping.Core.Models.Enums;
using Microsoft.Extensions.Logging;

namespace JdeScoping.Core.Models.Search;

/// <summary>
/// User search request entity
/// </summary>
public class Search
{
    /// <summary>
    /// PK ID of search
    /// </summary>
    public int Id { get; set; }

    /// <summary>
    /// User name of user that created search
    /// </summary>
    public string UserName { get; set; } = string.Empty;

    /// <summary>
    /// User-friendly name for search
    /// </summary>
    public string Name { get; set; } = string.Empty;

    /// <summary>
    /// Current search status
    /// </summary>
    [JsonConverter(typeof(JsonStringEnumConverter))]
    public SearchStatus Status { get; set; }

    /// <summary>
    /// Timestamp search was submitted
    /// </summary>
    public DateTime? SubmitDt { get; set; }

    /// <summary>
    /// Timestamp search was started
    /// </summary>
    public DateTime? StartDt { get; set; }

    /// <summary>
    /// Timestamp search was completed
    /// </summary>
    public DateTime? EndDt { get; set; }

    /// <summary>
    /// JSON-packed search criteria (stored in database)
    /// </summary>
    public string CriteriaJson { get; set; } = string.Empty;

    /// <summary>
    /// Search criteria (deserialized from CriteriaJSON)
    /// </summary>
    [JsonIgnore]
    public SearchCriteria? Criteria
    {
        get
        {
            TryGetCriteria(out var criteria);
            return criteria;
        }
        set
        {
            CriteriaJson = value != null
                ? JsonSerializer.Serialize(value)
                : string.Empty;
        }
    }

    /// <summary>
    /// Attempts to deserialize the search criteria from JSON.
    /// </summary>
    /// <param name="criteria">The deserialized criteria, or null if deserialization fails or JSON is empty.</param>
    /// <param name="logger">Optional logger for warning on deserialization failures.</param>
    /// <returns>True if deserialization succeeded or JSON was empty; false if deserialization failed.</returns>
    public bool TryGetCriteria(out SearchCriteria? criteria, ILogger? logger = null)
    {
        criteria = null;

        if (string.IsNullOrEmpty(CriteriaJson))
            return true; // Empty is valid, not an error

        try
        {
            criteria = JsonSerializer.Deserialize<SearchCriteria>(CriteriaJson);
            return true;
        }
        catch (JsonException ex)
        {
            logger?.LogWarning(ex, "Failed to deserialize search criteria for Search ID {SearchId}", Id);
            return false;
        }
    }

    /// <summary>
    /// Excel search results file (binary)
    /// </summary>
    public byte[]? Results { get; set; }
}