nadekobot/src/NadekoBot/Db/Extensions/QuoteExtensions.cs

using NadekoBot.Services.Database.Models;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using NadekoBot.Common;

namespace NadekoBot.Db;

public static class QuoteExtensions
{
    public static IEnumerable<Quote> GetForGuild(this DbSet<Quote> quotes, ulong guildId)
    {
        return quotes.AsQueryable().Where(x => x.GuildId == guildId);
    }
        
    public static IEnumerable<Quote> GetGroup(this DbSet<Quote> quotes, ulong guildId, int page, OrderType order)
    {
        var q = quotes.AsQueryable().Where(x => x.GuildId == guildId);
        if (order == OrderType.Keyword)
            q = q.OrderBy(x => x.Keyword);
        else
            q = q.OrderBy(x => x.Id);

        return q.Skip(15 * page).Take(15).ToArray();
    }

    public static async Task<Quote> GetRandomQuoteByKeywordAsync(this DbSet<Quote> quotes, ulong guildId, string keyword)
    {
        var rng = new NadekoRandom();
        return (await quotes.AsQueryable()
                .Where(q => q.GuildId == guildId && q.Keyword == keyword)
                .ToListAsync())
            .OrderBy(q => rng.Next())
            .FirstOrDefault();
    }

    public static async Task<Quote> SearchQuoteKeywordTextAsync(this DbSet<Quote> quotes, ulong guildId, string keyword, string text)
    {
        var rngk = new NadekoRandom();
        return (await quotes.AsQueryable()
                .Where(q => q.GuildId == guildId
                            && q.Keyword == keyword
                            && EF.Functions.Like(q.Text.ToUpper(), $"%{text.ToUpper()}%")
                    // && q.Text.Contains(text, StringComparison.OrdinalIgnoreCase)
                )
                .ToListAsync())
            .OrderBy(q => rngk.Next())
            .FirstOrDefault();
    }

    public static void RemoveAllByKeyword(this DbSet<Quote> quotes, ulong guildId, string keyword)
    {
        quotes.RemoveRange(quotes.AsQueryable().Where(x => x.GuildId == guildId && x.Keyword.ToUpper() == keyword));
    }

}