namespace Admin.NET.Plugin.AiDOP.Universal;

/// <summary>
/// 通用物料选择服务 📦
/// 路由前缀：/api/Universal
/// </summary>
[ApiDescriptionSettings(Order = 279, Description = "通用-物料选择")]
[Route("api/Universal")]
[AllowAnonymous]
[NonUnify]
public class UniversalItemService : IDynamicApiController, ITransient
{
    private readonly ISqlSugarClient _db;

    public UniversalItemService(ISqlSugarClient db)
    {
        _db = db;
    }

    // 允许排序的字段白名单（key=前端 prop，value=数据库列名）
    private static readonly Dictionary<string, string> _sortFieldMap =
        new(StringComparer.OrdinalIgnoreCase)
        {
            ["itemnum"]  = "ItemNum",
            ["descr"]    = "Descr",
            ["descr1"]   = "Descr1",
            ["um"]       = "UM",
            ["location"] = "Location",
            ["rev"]      = "Rev",
            ["drawing"]  = "Drawing",
        };

    /// <summary>获取物料选择分页列表 📦</summary>
    [DisplayName("获取物料选择列表")]
    [HttpGet("item/page")]
    public async Task<object> GetItemPage([FromQuery] ItemPageInput input)
    {
        var conditions = new List<string>();
        var pars = new List<SugarParameter>();

        if (!string.IsNullOrWhiteSpace(input.ItemNum))
        {
            conditions.Add("ItemNum LIKE @ItemNum");
            pars.Add(new SugarParameter("@ItemNum", $"%{input.ItemNum.Trim()}%"));
        }
        if (!string.IsNullOrWhiteSpace(input.Descr))
        {
            conditions.Add("Descr LIKE @Descr");
            pars.Add(new SugarParameter("@Descr", $"%{input.Descr.Trim()}%"));
        }

        var where = conditions.Count > 0 ? string.Join(" AND ", conditions) : "1=1";

        var dbSortField = _sortFieldMap.TryGetValue(input.SortField ?? "", out var mapped) ? mapped : "ItemNum";
        var sortOrder = string.Equals(input.SortOrder, "desc", StringComparison.OrdinalIgnoreCase) ? "DESC" : "ASC";

        var offset = (input.Page - 1) * input.PageSize;
        var total = await _db.Ado.GetIntAsync(
            $"SELECT COUNT(*) FROM ItemMaster WHERE {where}", pars);
        var list = await _db.Ado.SqlQueryAsync<ItemRow>(
            $"SELECT RecID AS RecId, ItemNum, Descr, Descr1, UM AS Um, Location, Rev, Drawing FROM ItemMaster WHERE {where} ORDER BY {dbSortField} {sortOrder} LIMIT {input.PageSize} OFFSET {offset}",
            pars);

        return new { total, page = input.Page, pageSize = input.PageSize, list };
    }

    // ──────────────── 内部结果映射 ────────────────

    private sealed class ItemRow
    {
        public string? RecId { get; set; }
        public string? ItemNum { get; set; }
        public string? Descr { get; set; }
        public string? Descr1 { get; set; }
        public string? Um { get; set; }
        public string? Location { get; set; }
        public string? Rev { get; set; }
        public string? Drawing { get; set; }
    }
}

/// <summary>物料选择分页查询入参</summary>
public class ItemPageInput
{
    public int Page { get; set; } = 1;
    public int PageSize { get; set; } = 10;

    /// <summary>物料编号（模糊）</summary>
    public string? ItemNum { get; set; }

    /// <summary>物料名称（模糊）</summary>
    public string? Descr { get; set; }

    /// <summary>排序字段（前端 prop 名）</summary>
    public string? SortField { get; set; }

    /// <summary>排序方向：asc / desc</summary>
    public string? SortOrder { get; set; }
}