using AssetManager.Data;
using Microsoft.Extensions.Logging;
using SqlSugar;

namespace AssetManager.Data.Repositories;

/// <summary>
/// 投资组合仓储实现
/// </summary>
public class PortfolioRepository : IPortfolioRepository
{
    private readonly ISqlSugarClient _db;
    private readonly ILogger<PortfolioRepository> _logger;

    public PortfolioRepository(ISqlSugarClient db, ILogger<PortfolioRepository> logger)
    {
        _db = db;
        _logger = logger;
    }

    // ===== Portfolio =====

    public async Task<Portfolio?> GetByIdAsync(string id, string userId)
    {
        return await _db.Queryable<Portfolio>()
            .Where(p => p.Id == id && p.UserId == userId)
            .FirstAsync();
    }

    public async Task<List<Portfolio>> GetByUserIdAsync(string userId)
    {
        return await _db.Queryable<Portfolio>()
            .Where(p => p.UserId == userId)
            .ToListAsync();
    }

    public async Task<Portfolio> CreateAsync(Portfolio portfolio)
    {
        await _db.Insertable(portfolio).ExecuteCommandAsync();
        return portfolio;
    }

    public async Task<bool> UpdateAsync(Portfolio portfolio)
    {
        portfolio.UpdatedAt = DateTime.Now;
        return await _db.Updateable(portfolio).ExecuteCommandAsync() > 0;
    }

    public async Task<bool> DeleteAsync(string id, string userId)
    {
        var portfolio = await GetByIdAsync(id, userId);
        if (portfolio == null) return false;

        // 删除相关数据
        await _db.Deleteable<Position>().Where(p => p.PortfolioId == id).ExecuteCommandAsync();
        await _db.Deleteable<Transaction>().Where(t => t.PortfolioId == id).ExecuteCommandAsync();
        await _db.Deleteable<PortfolioNavHistory>().Where(n => n.PortfolioId == id).ExecuteCommandAsync();
        
        return await _db.Deleteable(portfolio).ExecuteCommandAsync() > 0;
    }

    // ===== Position =====

    public async Task<List<Position>> GetPositionsByPortfolioIdAsync(string portfolioId)
    {
        return await _db.Queryable<Position>()
            .Where(p => p.PortfolioId == portfolioId)
            .ToListAsync();
    }

    public async Task<Position?> GetPositionAsync(string portfolioId, string stockCode)
    {
        return await _db.Queryable<Position>()
            .Where(p => p.PortfolioId == portfolioId && p.StockCode == stockCode)
            .FirstAsync();
    }

    public async Task<Position> CreatePositionAsync(Position position)
    {
        position.CreatedAt = DateTime.Now;
        position.UpdatedAt = DateTime.Now;
        await _db.Insertable(position).ExecuteCommandAsync();
        return position;
    }

    public async Task<bool> UpdatePositionAsync(Position position)
    {
        position.UpdatedAt = DateTime.Now;
        return await _db.Updateable(position).ExecuteCommandAsync() > 0;
    }

    public async Task<bool> DeletePositionAsync(string positionId)
    {
        return await _db.Deleteable<Position>()
            .Where(p => p.Id == positionId)
            .ExecuteCommandAsync() > 0;
    }

    // ===== Transaction =====

    public async Task<List<Transaction>> GetTransactionsAsync(string portfolioId, int limit, int offset)
    {
        return await _db.Queryable<Transaction>()
            .Where(t => t.PortfolioId == portfolioId)
            .OrderByDescending(t => t.TransactionTime)
            .Skip(offset)
            .Take(limit)
            .ToListAsync();
    }

    public async Task<int> GetTransactionCountAsync(string portfolioId)
    {
        return await _db.Queryable<Transaction>()
            .Where(t => t.PortfolioId == portfolioId)
            .CountAsync();
    }

    public async Task<Transaction> CreateTransactionAsync(Transaction transaction)
    {
        transaction.CreatedAt = DateTime.Now;
        await _db.Insertable(transaction).ExecuteCommandAsync();
        return transaction;
    }

    // ===== NavHistory =====

    public async Task<List<PortfolioNavHistory>> GetNavHistoryAsync(string portfolioId, DateTime? startDate, DateTime? endDate)
    {
        var query = _db.Queryable<PortfolioNavHistory>()
            .Where(n => n.PortfolioId == portfolioId);

        if (startDate.HasValue)
        {
            query = query.Where(n => n.NavDate >= startDate.Value.Date);
        }
        if (endDate.HasValue)
        {
            query = query.Where(n => n.NavDate <= endDate.Value.Date);
        }

        return await query.OrderBy(n => n.NavDate).ToListAsync();
    }

    public async Task<int> DeleteNavHistoryAfterDateAsync(string portfolioId, DateTime date)
    {
        return await _db.Deleteable<PortfolioNavHistory>()
            .Where(n => n.PortfolioId == portfolioId && n.NavDate >= date.Date)
            .ExecuteCommandAsync();
    }

    public async Task<int> CreateNavHistoryBatchAsync(List<PortfolioNavHistory> records)
    {
        if (records == null || records.Count == 0) return 0;
        
        return await _db.Insertable(records)
            .ExecuteCommandAsync();
    }
}