<?php

namespace App\Http\Controllers;

use App\Models\SocialRecurringCampaign;
use App\Services\SocialAutomationHealthService;
use Illuminate\Http\Request;
use Illuminate\View\View;

class DashboardController extends Controller
{
    public function __invoke(Request $request, SocialAutomationHealthService $health): View
    {
        $user = $request->user();
        $platforms = $this->platforms();
        $platformProgress = $health->platformProgress($user, $platforms);
        $cronStatus = $health->cronStatus();

        $stats = [
            'scheduled' => $user->socialPosts()->where('status', 'scheduled')->count(),
            'posted' => $user->socialPosts()->where('status', 'posted')->count(),
            'failed' => $user->socialPosts()->where('status', 'failed')->count(),
            'approval' => $user->socialPosts()->where('requires_approval', true)->where('status', 'draft')->count(),
            'ready_platforms' => collect($platformProgress)->filter(fn (array $item) => $item['credential_ready'])->count(),
        ];

        $recentPosts = $user->socialPosts()
            ->latest()
            ->limit(6)
            ->get();

        $recentProjects = $user->socialMediaAssets()
            ->latest()
            ->limit(12)
            ->get();

        $allRecurringCampaigns = $user->socialRecurringCampaigns()
            ->latest('id')
            ->get();

        $recentRecurringCampaigns = $allRecurringCampaigns
            ->sortBy(fn (SocialRecurringCampaign $campaign) => $campaign->next_occurrence_at?->timestamp ?? PHP_INT_MAX)
            ->take(6)
            ->values();

        $recentRecurringAlerts = $user->socialRecurringAlerts()
            ->latest('id')
            ->limit(6)
            ->get();

        $unreadRecurringAlertCount = $user->socialRecurringAlerts()
            ->whereNull('read_at')
            ->count();

        $recurringStats = [
            'active' => $allRecurringCampaigns->where('status', 'active')->count(),
            'paused' => $allRecurringCampaigns->where('status', 'paused')->count(),
            'completed' => $allRecurringCampaigns->where('status', 'completed')->count(),
            'due_today' => $allRecurringCampaigns
                ->filter(fn (SocialRecurringCampaign $campaign) => $campaign->status === 'active'
                    && $campaign->next_occurrence_at
                    && $campaign->next_occurrence_at->between(now(), now()->endOfDay()))
                ->count(),
            'generated_this_week' => $user->socialPosts()
                ->whereNotNull('recurrence_campaign_id')
                ->where('scheduled_at', '>=', now()->startOfWeek())
                ->count(),
            'approval_queue' => $user->socialPosts()
                ->whereNotNull('recurrence_campaign_id')
                ->where('requires_approval', true)
                ->where('status', 'draft')
                ->count(),
            'unread_alerts' => $unreadRecurringAlertCount,
            'failing_campaigns' => $allRecurringCampaigns
                ->filter(fn (SocialRecurringCampaign $campaign) => filled(data_get($campaign->meta, 'last_enqueue_error.message')))
                ->count(),
        ];

        $recurringLaneSummary = $allRecurringCampaigns
            ->groupBy(fn (SocialRecurringCampaign $campaign) => $this->laneLabel($campaign))
            ->map(function ($items, $laneLabel) {
                $first = $items->sortBy(fn (SocialRecurringCampaign $campaign) => $campaign->next_occurrence_at?->timestamp ?? PHP_INT_MAX)->first();

                return [
                    'label' => $laneLabel,
                    'count' => $items->count(),
                    'active' => $items->where('status', 'active')->count(),
                    'manual' => $items->filter(fn (SocialRecurringCampaign $campaign) => $campaign->approval_mode === 'manual')->count(),
                    'auto' => $items->filter(fn (SocialRecurringCampaign $campaign) => $campaign->approval_mode === 'auto')->count(),
                    'next_occurrence_at' => $first?->next_occurrence_at,
                ];
            })
            ->sortByDesc('active')
            ->take(6)
            ->values();

        $nextScheduledPost = $user->socialPosts()
            ->whereIn('status', ['draft', 'scheduled', 'failed'])
            ->orderByRaw('scheduled_at is null, scheduled_at asc')
            ->first();

        return view('dashboard', [
            'cronStatus' => $cronStatus,
            'nextScheduledPost' => $nextScheduledPost,
            'platformProgress' => $platformProgress,
            'platforms' => $platforms,
            'recentPosts' => $recentPosts,
            'recentProjects' => $recentProjects,
            'recentRecurringAlerts' => $recentRecurringAlerts,
            'recentRecurringCampaigns' => $recentRecurringCampaigns,
            'recurringLaneSummary' => $recurringLaneSummary,
            'recurringStats' => $recurringStats,
            'stats' => $stats,
        ]);
    }

    private function laneLabel(SocialRecurringCampaign $campaign): string
    {
        $brand = trim((string) $campaign->brand_label);
        $team = trim((string) $campaign->team_label);

        if ($brand === '' && $team === '') {
            return 'General / Shared';
        }

        if ($brand === '') {
            return 'General / '.$team;
        }

        if ($team === '') {
            return $brand.' / Shared';
        }

        return $brand.' / '.$team;
    }

    private function platforms(): array
    {
        return [
            'facebook' => 'Facebook Page',
            'instagram' => 'Instagram Business',
            'tiktok' => 'TikTok',
            'x' => 'X / Twitter',
        ];
    }
}