using JobsMedical.Web.Data;
using JobsMedical.Web.Models;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.EntityFrameworkCore;

namespace JobsMedical.Web.Pages.Facilities;

public class IndexModel : PageModel
{
    private readonly AppDbContext _db;
    public IndexModel(AppDbContext db) => _db = db;

    public record FacilityRow(Facility Facility, int OpenListings);
    public List<FacilityRow> Rows { get; private set; } = new();

    // The shared placeholder for unnamed aggregated ads is not a real, browseable facility.
    private const string PlaceholderName = "نامشخص / ثبت نشده";

    public async Task OnGetAsync()
    {
        var today = DateOnly.FromDateTime(DateTime.UtcNow);
        var jobCutoff = JobsMedical.Web.Services.Scraping.ListingPolicy.JobCutoffUtc;

        var facilities = await _db.Facilities.Include(f => f.City)
            .Where(f => f.Name != PlaceholderName).ToListAsync();

        // "Active listings" = open shifts + open (fresh) job openings — a facility that is hiring
        // shouldn't read «۰ شیفت باز» just because it posted a job rather than a dated shift.
        var shiftCounts = await _db.Shifts
            .Where(s => s.Status == ShiftStatus.Open && s.Date >= today)
            .GroupBy(s => s.FacilityId).Select(g => new { g.Key, C = g.Count() })
            .ToDictionaryAsync(x => x.Key, x => x.C);
        var jobCounts = await _db.JobOpenings
            .Where(j => j.Status == ShiftStatus.Open && j.CreatedAt >= jobCutoff)
            .GroupBy(j => j.FacilityId).Select(g => new { g.Key, C = g.Count() })
            .ToDictionaryAsync(x => x.Key, x => x.C);

        Rows = facilities
            .Select(f => new FacilityRow(f, shiftCounts.GetValueOrDefault(f.Id) + jobCounts.GetValueOrDefault(f.Id)))
            .OrderByDescending(r => r.OpenListings)   // active facilities first
            .ThenByDescending(r => r.Facility.IsVerified)
            .ThenBy(r => r.Facility.Name)
            .ToList();
    }
}