using System;
using Xunit;
using Newtonsoft.Json.Linq;
using FluentAssertions;

namespace raven_integration
{

    public class MemoCrud
    {

        private static long GetUserIdFromToken(string token)
        {
            var payloadB64 = token.Split('.')[1].Replace('-', '+').Replace('_', '/');
            while (payloadB64.Length % 4 != 0) payloadB64 += "=";
            var json = System.Text.Encoding.UTF8.GetString(Convert.FromBase64String(payloadB64));
            return JObject.Parse(json)["id"].Value<long>();
        }

        /// <summary>
        /// Create a memo, read it back, then delete it and confirm it is gone.
        /// Memos are immutable after sending so there is no PUT step.
        ///
        /// Note: the normal POST (users=[userId]) returns 202 Accepted with no body — the
        /// server creates per-recipient records but returns no id. To get a testable memo id
        /// we use the v8 migration compatibility path: users=[-7] authenticated as superuser
        /// (id=1). That path creates a single memo and returns 200 with {data:{id:N}}.
        /// </summary>
        [Fact]
        public async Task CreateReadDelete()
        {
            // Must be superuser (id=1) to use the migration compatibility path
            var token = await Util.GetTokenAsync("superuser", "l3tm3in");

            var isoNow = DateTime.UtcNow.ToString("o");
            var subject = Util.Uniquify("Test Memo");

            // CREATE via migration path: users=[-7], superuser auth → 200 with {data:{id:N}}
            // fromId=1, toId=1 so that foreign-key constraints are satisfied
            var payload = $$"""
                {"memo":{"id":0,"concurrency":0,"name":"{{subject}}","notes":"Test memo body text.","wiki":null,"customFields":"{}","tags":[],"viewed":false,"replied":false,"fromId":1,"toId":1,"sent":"{{isoNow}}"},"users":[-7]}
                """;

            ApiResponse a = await Util.PostAsync("memo", token, payload);
            Util.ValidateDataReturnResponseOk(a);
            long Id = a.ObjectResponse["data"]["id"].Value<long>();
            Id.Should().BeGreaterThan(0);

            // GET
            a = await Util.GetAsync($"memo/{Id}", token);
            Util.ValidateDataReturnResponseOk(a);
            a.ObjectResponse["data"]["name"].Value<string>().Should().Be(subject);

            // DELETE
            a = await Util.DeleteAsync($"memo/{Id}", token);
            Util.ValidateHTTPStatusCode(a, 204);

            // Confirm deleted
            a = await Util.GetAsync($"memo/{Id}", token);
            Util.ValidateResponseNotFound(a);
        }


    }//eoc
}//eons