using Microsoft.EntityFrameworkCore;
using ZB.MOM.WW.OtOpcUa.Configuration;
using ZB.MOM.WW.OtOpcUa.Configuration.Entities;

namespace ZB.MOM.WW.OtOpcUa.Admin.Services;

public sealed class UnsService(OtOpcUaConfigDbContext db)
{
    public Task<List<UnsArea>> ListAreasAsync(long generationId, CancellationToken ct) =>
        db.UnsAreas.AsNoTracking()
            .Where(a => a.GenerationId == generationId)
            .OrderBy(a => a.Name)
            .ToListAsync(ct);

    public Task<List<UnsLine>> ListLinesAsync(long generationId, CancellationToken ct) =>
        db.UnsLines.AsNoTracking()
            .Where(l => l.GenerationId == generationId)
            .OrderBy(l => l.Name)
            .ToListAsync(ct);

    public async Task<UnsArea> AddAreaAsync(long draftId, string clusterId, string name, string? notes, CancellationToken ct)
    {
        var area = new UnsArea
        {
            GenerationId = draftId,
            UnsAreaId = $"area-{Guid.NewGuid():N}"[..20],
            ClusterId = clusterId,
            Name = name,
            Notes = notes,
        };
        db.UnsAreas.Add(area);
        await db.SaveChangesAsync(ct);
        return area;
    }

    public async Task<UnsLine> AddLineAsync(long draftId, string unsAreaId, string name, string? notes, CancellationToken ct)
    {
        var line = new UnsLine
        {
            GenerationId = draftId,
            UnsLineId = $"line-{Guid.NewGuid():N}"[..20],
            UnsAreaId = unsAreaId,
            Name = name,
            Notes = notes,
        };
        db.UnsLines.Add(line);
        await db.SaveChangesAsync(ct);
        return line;
    }
}