<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\HasOne;
use Illuminate\Support\Facades\Auth;

class Calendar extends Model
{
    protected $table = 'calendars'; // Sabre table
    public $timestamps = false;  // no created_at/updated_at

    /* add mass-assignment for these cols */
    protected $fillable = [
        'displayname',
        'description',
    ];

    /* all event components (VEVENT, VTODO, …) */
    public function events(): HasMany
    {
        return $this->hasMany(Event::class, 'calendarid'); // FK in calendarobjects
    }

    /* ui-specific metadata (color, sharing flags, json settings) */
    public function meta(): HasOne
    {
        return $this->hasOne(CalendarMeta::class, 'calendar_id');
    }

    /* get instances */
    public function instances()
    {
        return $this->hasMany(CalendarInstance::class, 'calendarid');
    }

    /* get the primary? instance for a user */
    public function instanceForUser(?User $user = null)
    {
        $user = $user ?? auth()->user();

        return $this->instances()
            ->where('principaluri', 'principals/' . $user->email)
            ->first();
    }

    /**
     * convert "/calendar/{slug}" into the correct calendar instance (uri column)
     *
     * @param  mixed  $value  The URI segment (instance UUID).
     * @param  string|null  $field  Ignored in our override.
     */
    public function resolveRouteBinding($value, $field = null): mixed
    {
        return $this->whereHas('instances', function (Builder $q) use ($value) {
                $q->where('uri', $value)
                  ->where('principaluri', Auth::user()->principal_uri);
            })
            ->with('instances')
            ->firstOrFail();
    }
}