using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using MongoDB.Bson;
using MongoDB.Driver;
using weddingapi.Models;

namespace weddingapi.Repositories
{
    public class MongoDBFamilyRepository : IFamilyRepository
    {
        private const string databaseName = "wedding";
        private const string collectionName = "families";
        private readonly IMongoCollection<Family> familyCollection;
        private readonly FilterDefinitionBuilder<Family> filterBuilder = Builders<Family>.Filter;

        public MongoDBFamilyRepository(IMongoClient mongoClient)
        {
            IMongoDatabase database = mongoClient.GetDatabase(databaseName);
            familyCollection = database.GetCollection<Family>(collectionName);
        }

        public async Task CreateFamilyAsync(Family family)
        {
            await familyCollection.InsertOneAsync(family);
        }

        public async Task DeleteFamilyAsync(Guid id)
        {
            var filter = filterBuilder.Eq(family => family.Id, id);
            await familyCollection.DeleteOneAsync(filter);
        }

        public async Task<IEnumerable<Family>> GetFamiliesAsync()
        {
            var res = await familyCollection.FindAsync(new BsonDocument());
            return await res.ToListAsync();
        }

        public async Task<Family> GetFamilyAsync(Guid id)
        {
            var filter = filterBuilder.Eq(family => family.Id, id);
            var res = await familyCollection.FindAsync(filter);
            return await res.SingleOrDefaultAsync();
        }

        public async Task UpdateFamilyAsync(Family family)
        {
            var filter = filterBuilder.Eq(exisitingFamily => exisitingFamily.Id, family.Id);
            await familyCollection.ReplaceOneAsync(filter, family);
        }
    }
}