<?php

declare(strict_types=1);

namespace App\Services;

use App\Models\Client;
use App\Models\ContentBrief;
use App\Models\Event;
use App\Models\Invoice;
use App\Models\SocialStat;
use Illuminate\Support\Collection;

final class DashboardService
{
    public function getStats(): array
    {
        return [
            'total_clients'       => Client::count(),
            'active_clients'      => Client::where('status', 'active')->count(),
            'upcoming_events'     => Event::upcoming(24 * 90)->count(), // 3 months
            'pending_invoices'    => Invoice::where('status', 'sent')->count(),
            'total_revenue'       => Invoice::where('status', 'paid')->sum('total'),
            'content_in_progress' => ContentBrief::whereNotIn('status', ['posted', 'archived'])->count(),
        ];
    }

    /**
     * Combined today's activities: events (today or ongoing), invoices due, content targets.
     */
    public function getTodayActivities(): Collection
    {
        $activities = collect();

        // Events starting today OR currently ongoing (started before today, ends today or later)
        $events = Event::with('client')
            ->where(function ($q) {
                $q->whereDate('start_time', today())
                  ->orWhere(function ($q2) {
                      $q2->whereDate('start_time', '<', today())
                         ->where(function ($q3) {
                             $q3->whereDate('end_time', '>=', today())
                                ->orWhereNull('end_time');
                         })
                         ->whereNotIn('status', ['completed', 'cancelled']);
                  });
            })
            ->orderBy('start_time')
            ->limit(15)
            ->get();

        foreach ($events as $e) {
            $timeLabel = $e->is_all_day
                ? 'All day'
                : ($e->start_time->format('H:i') . ($e->end_time ? ' – ' . $e->end_time->format('H:i') : ''));

            $activities->push([
                'type'        => 'event',
                'icon'        => '📅',
                'title'       => $e->title,
                'subtitle'    => $timeLabel . ($e->client ? ' · ' . $e->client->name : ''),
                'label'       => $e->event_type,
                'badge'       => $e->status->label(),
                'badge_class' => $e->status->badgeClass(),
                'color'       => $e->color ?? '#FFB7C5',
                'priority'    => $e->is_priority,
                'sort_key'    => $e->start_time->timestamp,
            ]);
        }

        // Invoices due today (not yet paid or cancelled)
        $invoices = Invoice::with('client')
            ->whereDate('due_date', today())
            ->whereNotIn('status', ['paid', 'cancelled'])
            ->get();

        foreach ($invoices as $inv) {
            $activities->push([
                'type'        => 'invoice',
                'icon'        => '🧾',
                'title'       => $inv->title ?? $inv->invoice_number,
                'subtitle'    => ($inv->client?->name ?? 'No client') . ' · ' . ($inv->formatted_total ?? ''),
                'label'       => 'Invoice Due',
                'badge'       => $inv->status->label(),
                'badge_class' => $inv->status->badgeClass(),
                'color'       => '#FDFD96',
                'priority'    => false,
                'sort_key'    => today()->setTime(23, 59, 0)->timestamp,
            ]);
        }

        // Content briefs with target date today (not posted/archived)
        $content = ContentBrief::with('client')
            ->whereDate('target_date', today())
            ->whereNotIn('status', ['posted', 'archived'])
            ->get();

        foreach ($content as $c) {
            $activities->push([
                'type'        => 'content',
                'icon'        => $c->platform_icon,
                'title'       => $c->title,
                'subtitle'    => ucfirst($c->platform) . ($c->client ? ' · ' . $c->client->name : ''),
                'label'       => 'Content Target',
                'badge'       => $c->status->label(),
                'badge_class' => 'badge-ghost',
                'color'       => '#E8D5F5',
                'priority'    => false,
                'sort_key'    => today()->setTime(12, 0, 0)->timestamp,
            ]);
        }

        return $activities->sortBy('sort_key')->values();
    }

    public function getAlertCount(): int
    {
        return Event::upcoming(24)->count();
    }

    public function getLatestInvoices(): Collection
    {
        return Invoice::with('client')
            ->latest()
            ->limit(5)
            ->get();
    }

    public function getSocialStats(): Collection
    {
        return SocialStat::whereIn('id', function ($query): void {
            $query->selectRaw('MAX(id)')
                  ->from('social_stats')
                  ->groupBy('platform');
        })->get();
    }
}