using WxAgent.Core;
using Xunit;

namespace WxAgent.Core.Tests;

public sealed class WechatGroupMemberQueryTests
{
    [Fact]
    public void QueryUsesStableIdsAndBoundParameters()
    {
        var parameters = WechatGroupMemberQuery.Parameters("123@chatroom", 2, 4).ToDictionary(pair => pair.Key, pair => pair.Value);
        Assert.Equal("123@chatroom", parameters["$group"]);
        Assert.Equal(3, parameters["$limit"]);
        Assert.Equal(4, parameters["$offset"]);
        Assert.Contains("c.id = m.member_id", WechatGroupMemberQuery.Sql);
        Assert.Contains("ORDER BY m.member_id", WechatGroupMemberQuery.Sql);
        Assert.DoesNotContain("123@chatroom", WechatGroupMemberQuery.Sql);
    }

    [Theory]
    [InlineData("group")]
    [InlineData("")]
    [InlineData(" ")]
    public void StableGroupUsernameIsRequired(string group) =>
        Assert.Equal(WxAgentErrorCode.InvalidArgument,
            Assert.Throws<WxAgentException>(() => WechatGroupMemberQuery.Parameters(group, 1, 0)).Code);

    [Fact]
    public void PagePreservesDuplicateDisplayNamesAndSignalsNextOffset()
    {
        WechatDatabaseGroupMember[] rows =
        [
            new(1, "one", "same", true), new(2, "two", "same", false), new(3, "three", "three", false)
        ];
        var page = WechatGroupMemberQuery.Page("123@chatroom", rows, 2, 4);
        Assert.True(page.HasMore);
        Assert.Equal(6, page.NextOffset);
        Assert.Equal(new[] { "one", "two" }, page.Members.Select(member => member.Username));
        Assert.True(page.Members[0].IsOwner);
    }
}