using Application.Abstractions.Data;
using Domain.Entities.Stocks;
using Domain.Entities.Stocks.ValueObject;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using SharedKernel;

namespace Infrastructure.StockData;

/// <summary>
/// 지수(시장) 일별시세 수집 — KRX OpenAPI (KOSPI/KOSDAQ/KRX 시리즈, AUTH_KEY 헤더).
/// 기본 18:30 KST 실행(장 마감 후 확정), basDd=직전 영업일 3개 엔드포인트 전량 수집 → IndexDailyPrice upsert (UQ = Series+IndexName+TradeDate).
/// 미반영(0건)이면 2시간 간격 2회 재시도. ApiKey 미설정 시 로그만 남기고 skip (data.go.kr 배치와 동일 정책).
/// </summary>
internal sealed class IndexPriceSyncService(
    IServiceScopeFactory scopeFactory,
    IHttpClientFactory httpClientFactory,
    IOptions<AppSettings> settings,
    ILogger<IndexPriceSyncService> logger
) : DailyScheduledService(logger)
{
    // (계열, 엔드포인트 경로)
    private static readonly (MarketIndexSeries Series, string Path)[] Endpoints =
    [
        (MarketIndexSeries.KOSPI, "/svc/apis/idx/kospi_dd_trd"),
        (MarketIndexSeries.KOSDAQ, "/svc/apis/idx/kosdaq_dd_trd"),
        (MarketIndexSeries.KRX, "/svc/apis/idx/krx_dd_trd")
    ];

    protected override string JobName => "IndexPriceSync";

    protected override TimeOnly TargetTime => ParseTime(settings.Value.KRXCoKr.IndexSyncTime, new TimeOnly(18, 30));

    protected override int MaxRetryCount => 2;

    protected override TimeSpan RetryDelay => TimeSpan.FromHours(2);

    protected override async Task<bool> RunOnceAsync(DateOnly todayKst, CancellationToken ct)
    {
        var cfg = settings.Value.KRXCoKr;
        if (string.IsNullOrWhiteSpace(cfg.ApiKey))
        {
            Logger.LogWarning("[{Job}] KRXCoKr:ApiKey 미설정 — 수집 skip", JobName);
            return true;
        }

        using var scope = scopeFactory.CreateScope();
        var db = scope.ServiceProvider.GetRequiredService<IAppDbContext>();
        var client = httpClientFactory.CreateClient(KrxCoKrHttp.ClientName);

        var targetDate = await MarketCalendar.GetPreviousBusinessDayAsync(db, todayKst.AddDays(1), ct);
        var rows = new List<KrxIndexParser.IndexRow>();

        foreach (var (series, path) in Endpoints)
        {
            var url = $"{cfg.BaseUrl.TrimEnd('/')}{path}?basDd={targetDate:yyyyMMdd}";
            var json = await KrxCoKrHttp.GetStringWithRetryAsync(client, url, cfg.ApiKey, Logger, ct);
            var parsed = KrxIndexParser.ParseIndexPrices(json, series);

            Logger.LogInformation("[{Job}] {Series} basDd={TargetDate} rows={Rows}", JobName, series, targetDate, parsed.Count);
            rows.AddRange(parsed);
        }

        if (rows.Count == 0)
        {
            Logger.LogInformation("[{Job}] basDd={TargetDate} 지수 미반영 (0건)", JobName, targetDate);
            return false;
        }

        var existing = await db.IndexDailyPrice.Where(c => c.TradeDate == targetDate).ToListAsync(ct);
        var existingByKey = existing.ToDictionary(c => (c.Series, c.IndexName));
        var inserted = 0;
        var updated = 0;

        foreach (var row in rows)
        {
            if (existingByKey.TryGetValue((row.Series, row.IndexName), out var price))
            {
                price.Update(row.Close, row.ChangeVal, row.FlucRateBp, row.Open, row.High, row.Low, row.Volume, row.Value, row.MarketCap);
                updated++;
            }
            else
            {
                var created = IndexDailyPrice.Create(row.Series, row.IndexName, row.TradeDate, row.Close, row.ChangeVal, row.FlucRateBp, row.Open, row.High, row.Low, row.Volume, row.Value, row.MarketCap);
                await db.IndexDailyPrice.AddAsync(created, ct);
                existingByKey[(row.Series, row.IndexName)] = created;
                inserted++;
            }
        }

        await db.SaveChangesAsync(ct);

        Logger.LogInformation("[{Job}] 완료 — basDd={TargetDate}, rows={Rows}, inserted={Inserted}, updated={Updated}",
            JobName, targetDate, rows.Count, inserted, updated);

        return true;
    }
}