Add token batch request

Tzkt.Api/Controllers/TokensController.cs

@@ -2,6 +2,7 @@
 using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
+using Newtonsoft.Json;
 using Tzkt.Api.Models;
 using Tzkt.Api.Repositories;
 using Tzkt.Api.Services;
@@ -75,6 +76,24 @@ public async Task<ActionResult<IEnumerable<Token>>> GetTokens(
                 Rows = await Tokens.GetTokens(filter, pagination, selection.select.Fields ?? selection.select.Values)
             });
         }
+
+        /// <summary>
+        /// Get tokens by list of contract:tokenId
+        /// </summary>
+        /// <remarks>
+        /// Returns a list of tokens.
+        /// </remarks>
+        /// <param name="value">TokenIdList</param>
+        /// <returns></returns>
+        [HttpPost("")]
+        public async Task<ActionResult<IEnumerable<Token>>> GetTokensBatch(
+            [FromBody] object value)
+        {
+            var ids = JsonConvert.DeserializeObject<TokenIdList>(value.ToString()).Ids.
+                Select(id => id.Split(":"));
+            var batch = await Tokens.GetTokensBatch(ids);
+            return Ok(batch);
+        }
         #endregion
 
         #region token balances

Tzkt.Api/Models/Tokens/TokenIdList.cs

@@ -0,0 +1,10 @@
+using System.Collections.Generic;
+
+namespace Tzkt.Api.Models
+{
+    public class TokenIdList
+    {
+        public List<string> Ids { get; set; }
+    }
+}
+

Tzkt.Api/Repositories/TokensRepository.cs

@@ -7,6 +7,7 @@
 using Dapper;
 using Tzkt.Api.Models;
 using Tzkt.Api.Services.Cache;
+using System;
 
 namespace Tzkt.Api.Repositories
 {
@@ -234,6 +235,34 @@ public async Task<object[][]> GetTokens(TokenFilter filter, Pagination paginatio
 
             return result;
         }
+
+        public async Task<IEnumerable<Token>> GetTokensBatch(IEnumerable<string[]> ids)
+        {
+            using var db = GetConnection();
+            var cond = String.Join(",", ids.Select(x => $"('{Regex.Replace(x[0], @"\s+", "")}','{Regex.Replace(x[1], "[^0-9]", "")}')"));
+            var sql = new SqlBuilder($@"SELECT t.* FROM ""Tokens"" t left join ""Accounts"" a on t.""ContractId"" = a.""Id""
+                        where(a.""Address"", t.""TokenId"") in ({cond})");
+            var rows = await db.QueryAsync<dynamic>(sql.Query);
+            var result = rows.Select(row => new Token
+            {
+                Contract = Accounts.GetAlias(row.ContractId),
+                Id = row.Id,
+                BalancesCount = row.BalancesCount,
+                FirstLevel = row.FirstLevel,
+                FirstTime = Times[row.FirstLevel],
+                HoldersCount = row.HoldersCount,
+                LastLevel = row.LastLevel,
+                LastTime = Times[row.LastLevel],
+                Standard = TokenStandards.ToString(row.Tags),
+                TokenId = row.TokenId,
+                TotalBurned = row.TotalBurned,
+                TotalMinted = row.TotalMinted,
+                TotalSupply = row.TotalSupply,
+                TransfersCount = row.TransfersCount,
+                Metadata = row.Metadata
+            });
+            return result;
+        }
         #endregion
 
         #region token balances