using System;
using System.Collections.Generic;

namespace GB5Shared.DTO.Promotion
{
    // ============================================================
    // PromotionBundleDTO — the exported snapshot of one promotable object
    // (+ its known children), moved between deployments as the payload of a
    // GOP Promotion flow and/or an Exchange package. See
    // /Users/venkatv/.claude/plans/as-part-of-developement-indexed-stonebraker.md
    //
    // Identity across deployments is (OriginEnvironmentCode, EntityTypeCode,
    // OriginEntityId) — never a raw numeric ID alone, since AutoNumber-assigned
    // IDs mean nothing across two separate physical databases.
    // ============================================================
    public class PromotionBundleDTO
    {
        public string OriginEnvironmentCode { get; set; } = string.Empty;
        public string EntityTypeCode        { get; set; } = string.Empty; // MPROMOTABLEENTITYTYPE.ENTITYTYPECODE
        public int    OriginEntityId        { get; set; }

        /// <summary>The exported object's own DTO, serialized as JSON by the owning
        /// IPromotableEntity implementation — shape is entity-specific, opaque here.</summary>
        public string PayloadJson { get; set; } = string.Empty;

        /// <summary>Serialized child rows (e.g. Menu -> MenuGroupDetail), one entry per
        /// child collection, entity-specific in shape — opaque here, interpreted only by
        /// the IPromotableEntity implementation that produced/consumes it.</summary>
        public Dictionary<string, string> ChildPayloadsJson { get; set; } = new();

        public int      SubmittedByUserId    { get; set; }
        public string?  SubmittedByUserName  { get; set; }
        public DateTime SubmittedOn          { get; set; }

        /// <summary>Submitter's own claim about shareability — re-checked independently by
        /// the addon-reference validator at both export and ingest time, never trusted alone.</summary>
        public bool SubmitterClaimsShareable { get; set; } = true;

        /// <summary>Reserved for the future "early packet ahead of a full release" extension
        /// (see the plan's Generalizing section) — unused by Promotion itself today, but part
        /// of the manifest from the start so it isn't a breaking format change later.</summary>
        public string? ReleaseVersion { get; set; }
    }

    // ============================================================
    // PromotionValidationResultDTO — returned by IPromotableEntity.ValidateForPromotionAsync,
    // re-run independently at both export time (fail fast for the submitter) and ingest time
    // (never trust only the origin's copy of the validator).
    // ============================================================
    public class PromotionValidationResultDTO
    {
        public bool IsPromotable { get; set; } = true;
        public List<string> BlockingReasons { get; set; } = new();
        public List<string> Warnings { get; set; } = new();

        public static PromotionValidationResultDTO Ok() => new() { IsPromotable = true };

        public static PromotionValidationResultDTO Block(string reason) => new()
        {
            IsPromotable = false,
            BlockingReasons = new List<string> { reason }
        };
    }
}