using System.Text.Json;
using RobotNet10.NavigationTune.Shared.Models;
using StraightLineScenario = RobotNet10.NavigationTune.Scenarios.StraightLineScenario;
using CircleScenario = RobotNet10.NavigationTune.Scenarios.CircleScenario;
using CustomPathScenario = RobotNet10.NavigationTune.Scenarios.CustomPathScenario;

namespace RobotNet10.NavigationTune.Data;

/// <summary>
/// Entity for storing TestScenario in database
/// Since TestScenario is abstract, we store config as JSON
/// </summary>
public class TestScenarioEntity
{
    public Guid Id { get; set; }
    public string Name { get; set; } = string.Empty;
    public string Description { get; set; } = string.Empty;
    public TrajectoryType Type { get; set; }
    public DateTime CreatedAt { get; set; }
    public bool IsDefault { get; set; }
    
    /// <summary>
    /// JSON config for scenario-specific properties
    /// </summary>
    public string ConfigJson { get; set; } = string.Empty;

    /// <summary>
    /// Convert to TestScenario instance
    /// </summary>
    public TestScenario ToTestScenario()
    {
        return Type switch
        {
            TrajectoryType.StraightLine => JsonSerializer.Deserialize<StraightLineScenario>(ConfigJson) 
                ?? new StraightLineScenario { Id = Id, Name = Name, Description = Description, Type = Type, CreatedAt = CreatedAt, IsDefault = IsDefault },
            TrajectoryType.Circle => JsonSerializer.Deserialize<CircleScenario>(ConfigJson) 
                ?? new CircleScenario { Id = Id, Name = Name, Description = Description, Type = Type, CreatedAt = CreatedAt, IsDefault = IsDefault },
            TrajectoryType.Custom => JsonSerializer.Deserialize<CustomPathScenario>(ConfigJson) 
                ?? new CustomPathScenario { Id = Id, Name = Name, Description = Description, Type = Type, CreatedAt = CreatedAt, IsDefault = IsDefault },
            _ => throw new NotSupportedException($"Scenario type {Type} is not supported")
        };
    }

    /// <summary>
    /// Create from TestScenario
    /// </summary>
    public static TestScenarioEntity FromTestScenario(TestScenario scenario)
    {
        return new TestScenarioEntity
        {
            Id = scenario.Id,
            Name = scenario.Name,
            Description = scenario.Description,
            Type = scenario.Type,
            CreatedAt = scenario.CreatedAt,
            IsDefault = scenario.IsDefault,
            ConfigJson = scenario.Type switch
            {
                TrajectoryType.StraightLine => JsonSerializer.Serialize((StraightLineScenario)scenario),
                TrajectoryType.Circle => JsonSerializer.Serialize((CircleScenario)scenario),
                TrajectoryType.Custom => JsonSerializer.Serialize((CustomPathScenario)scenario),
                _ => "{}"
            }
        };
    }
}