HC900-Crawler/src/Hc900Crawler/Controllers/ReportController.cs

using Hc900Crawler.Core.Application.DTOs;
using Hc900Crawler.Core.Application.Interfaces;
using Hc900Crawler.Infrastructure.Reporting;
using Microsoft.AspNetCore.Mvc;

namespace Hc900Crawler.Web.Controllers;

[ApiController]
[Route("api/report")]
public class ReportController : ControllerBase
{
    private readonly IReportMetricService _metrics;
    private readonly ReportFillService _fill;
    private readonly IReportTemplateStore _store;
    private readonly ReportColumnMap _map;

    // 웹 대시보드 기본 메트릭 세트
    private static readonly string[] SUMMARY_METRICS =
        { "production_total", "yield_qv", "energy_intensity_qv", "mass_balance_closure", "control_residual" };

    public ReportController(IReportMetricService metrics, ReportFillService fill,
        IReportTemplateStore store, ReportColumnMap map)
    { _metrics = metrics; _fill = fill; _store = store; _map = map; }

    /// <summary>설정된 컬럼 목록(웹 UI 셀렉트용).</summary>
    [HttpGet("columns")]
    public IActionResult Columns()
        => Ok(_map.Columns().Select(c => new { Column = c, HasClosure = _map.HasClosure(c) }));

    /// <summary>단건 메트릭(미리보기/디버그).</summary>
    [HttpPost("metric")]
    public async Task<IActionResult> Metric([FromBody] MetricRequestDto req, CancellationToken ct)
        => Ok(await _metrics.ComputeAsync(req, ct));

    /// <summary>웹에서 바로 보기 — 한 컬럼·날짜의 전 메트릭을 한 번에.</summary>
    [HttpGet("summary")]
    public async Task<IActionResult> Summary(string column = "C-6111", DateTime? date = null,
        string source = "history_table", int? sessionId = null, CancellationToken ct = default)
    {
        var d = (date ?? DateTime.UtcNow.AddHours(9).AddDays(-1)).Date;   // 기본 = 어제(KST)
        var results = new List<MetricResultDto>();
        foreach (var m in SUMMARY_METRICS)
            results.Add(await _metrics.ComputeAsync(new MetricRequestDto
            {
                Column = column, Metric = m, PeriodDateKst = d,
                SourceTable = source, SessionId = sessionId
            }, ct));
        return Ok(new { Column = column, Date = d.ToString("yyyy-MM-dd"), Source = source, Metrics = results });
    }

    /// <summary>엑셀 템플릿 등록.</summary>
    [HttpPost("template")]
    public async Task<IActionResult> Upload([FromForm] IFormFile file, [FromForm] string name,
        [FromForm] string? owner, CancellationToken ct)
    {
        if (file == null || file.Length == 0) return BadRequest(new { Error = "파일 없음" });
        using var ms = new MemoryStream();
        await file.CopyToAsync(ms, ct);
        var id = await _store.CreateAsync(name, owner, ms.ToArray(), ct);
        return Ok(new { Id = id });
    }

    /// <summary>★템플릿+날짜 → 채워진 xlsx 다운로드.</summary>
    [HttpGet("generate")]
    public async Task<IActionResult> Generate(int templateId, DateTime date,
        string source = "history_table", int? sessionId = null, CancellationToken ct = default)
    {
        var tpl = await _store.GetBlobAsync(templateId, ct);
        if (tpl == null) return NotFound(new { Error = $"템플릿 {templateId} 없음" });

        var (xlsx, cells, status) = await _fill.FillAsync(tpl, date, source, sessionId, ct);
        await _store.RecordRunAsync(templateId, "DAILY", date, source, status, cells, xlsx, ct);

        Response.Headers["X-Report-Status"] = status;
        var fname = $"report_{templateId}_{date:yyyyMMdd}.xlsx";
        return File(xlsx, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", fname);
    }
}