<?php

use App\Models\Airline;
use App\Models\Alliance;
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
    public function up(): void
    {
        // ---------------------------------------------------------------
        // 1. achievement_difficulties
        // ---------------------------------------------------------------
        Schema::create('achievement_difficulties', function (Blueprint $table) {
            $table->id();
            $table->string('internal_name')->unique();
            $table->string('name');
            $table->text('description');
            $table->timestamps();
        });

        DB::table('achievement_difficulties')->insert([
            [
                'internal_name' => 'easy',
                'name'          => 'Easy',
                'description'   => "As easy as booking a flight somewhere new!",
                'created_at'    => now(),
                'updated_at'    => now(),
            ],
            [
                'internal_name' => 'moderate',
                'name'          => 'Moderate',
                'description'   => 'You might have to reroute your flights a little just to get the achievement!',
                'created_at'    => now(),
                'updated_at'    => now(),
            ],
            [
                'internal_name' => 'hard',
                'name'          => 'Hard',
                'description'   => "You'll need to go quite a bit out of the way to get this achievement!",
                'created_at'    => now(),
                'updated_at'    => now(),
            ],
            [
                'internal_name' => 'expensive',
                'name'          => 'Expensive',
                'description'   => 'It might be hard, but it will be easier if you have a lot of money!',
                'created_at'    => now(),
                'updated_at'    => now(),
            ],
            [
                'internal_name' => 'near_impossible',
                'name'          => 'Near-Impossible',
                'description'   => 'You will actively have to try to get this achievement and they may be very few ways to go about it.',
                'created_at'    => now(),
                'updated_at'    => now(),
            ],
            [
                'internal_name' => 'impossible',
                'name'          => 'Impossible',
                'description'   => 'This achievement is impossible to get if you start today, but was previously possible.',
                'created_at'    => now(),
                'updated_at'    => now(),
            ],
        ]);

        // ---------------------------------------------------------------
        // 2. achievement_categories
        // ---------------------------------------------------------------
        Schema::create('achievement_categories', function (Blueprint $table) {
            $table->id();
            $table->string('internal_name')->unique();
            $table->string('name');
            $table->text('description');
            $table->timestamps();
        });

        DB::table('achievement_categories')->insert([
            [
                'internal_name' => 'general_flying',
                'name'          => 'General Flying',
                'description'   => 'Achievements earned through everyday flying activity.',
                'created_at'    => now(),
                'updated_at'    => now(),
            ],
            [
                'internal_name' => 'countries_and_continents',
                'name'          => 'Countries & Continents',
                'description'   => 'Achievements for visiting countries, regions, and continents.',
                'created_at'    => now(),
                'updated_at'    => now(),
            ],
            [
                'internal_name' => 'aircraft',
                'name'          => 'Aircraft',
                'description'   => 'Achievements related to specific aircraft types and manufacturers.',
                'created_at'    => now(),
                'updated_at'    => now(),
            ],
            [
                'internal_name' => 'airlines_and_alliances',
                'name'          => 'Airlines and Alliances',
                'description'   => 'Achievements focused on airlines and alliances',
                'created_at'    => now(),
                'updated_at'    => now(),
            ],
            [
                'internal_name' => 'fun_challenges',
                'name'          => 'Fun Challenges',
                'description'   => 'Quirky and creative challenges for the adventurous traveller.',
                'created_at'    => now(),
                'updated_at'    => now(),
            ],
        ]);

        // ---------------------------------------------------------------
        // 3. Alter achievements — add new columns & foreign keys
        // ---------------------------------------------------------------
        Schema::table('achievements', function (Blueprint $table) {
            // Replace description with split fields
            $table->string('short_description')->after('internal_name');
            $table->text('long_description')->after('short_description');


            // Progressive tracking
            $table->boolean('progressive')->default(false)->after('long_description');

            // Difficulty flavour text specific to this achievement
            $table->text('difficulty_description')->nullable()->after('progressive');
            $table->unsignedInteger('threshold')->nullable()->after('progressive');


            // Foreign keys
            $table->foreignId('achievement_category_id')
                ->after('difficulty_description')
                ->constrained('achievement_categories')
                ->restrictOnDelete();

            $table->foreignId('achievement_difficulty_id')
                ->after('achievement_category_id')
                ->constrained('achievement_difficulties')
                ->restrictOnDelete();

            // Drop the old monolithic description column
            $table->dropColumn('description');
        });

        // ---------------------------------------------------------------
        // 4. Alter user_achievements — add nullable progress column
        // ---------------------------------------------------------------
        Schema::table('user_achievements', function (Blueprint $table) {
            $table->unsignedInteger('progress')->nullable()->after('achievement_id');
        });

        Schema::create('notifications', function (Blueprint $table) {
            $table->id();

            $table->foreignId('user_id')
                ->constrained('users')
                ->cascadeOnDelete();

            // Content
            $table->string('title');
            $table->text('body');
            $table->string('url')->nullable();

            // Achievement flag & optional link
            $table->boolean('is_achievement')->default(false);
            $table->foreignId('achievement_id')
                ->nullable()
                ->constrained('achievements')
                ->nullOnDelete();

            // State
            $table->timestamp('read_at')->nullable();
            $table->timestamp('expires_at')->nullable();

            $table->timestamps();

            // Common query patterns
            $table->index(['user_id', 'read_at']);
            $table->index('expires_at');
        });


        $this->seedAchievements();
        $this->createAlliances();
    }

    public function createAlliances(): void
    {
        Schema::create('alliances', function (Blueprint $table) {
            $table->id();
            $table->string('internal_name')->unique();
            $table->string('name');
            $table->timestamps();
        });

        Schema::table('airlines', function (Blueprint $table) {
            $table->foreignId('alliance_id')
                ->nullable()
                ->constrained('alliances')
                ->nullOnDelete();
        });

        DB::table('alliances')->insert([
            ['internal_name' => 'skyteam',         'name' => 'SkyTeam',       'created_at' => now(), 'updated_at' => now()],
            ['internal_name' => 'oneworld',        'name' => 'Oneworld',      'created_at' => now(), 'updated_at' => now()],
            ['internal_name' => 'star_alliance',   'name' => 'Star Alliance', 'created_at' => now(), 'updated_at' => now()],
            ['internal_name' => 'vanilla_alliance','name' => 'Vanilla Alliance', 'created_at' => now(), 'updated_at' => now()],
        ]);

        Airline::whereInternalName('xiamen-airlines')->update(['internal_name' => 'xiamen-air', 'name' => 'XiamenAir']);

        $skyteam = Alliance::where('internal_name', 'skyteam')->first();
        $skyteamMembers = [
            'aerolineas-argentinas',
            'aeromexico',
            'air-europa',
            'air-france',
            'china-airlines',
            'china-eastern',
            'delta',
            'garuda-indonesia',
            'kenya-airways',
            'klm',
            'korean-air',
            'middle-east-airlines',
            'saudia',
            'sas',
            'tarom',
            'vietnam-airlines',
            'virgin-atlantic',
            'xiamen-air'
        ];

        $star = Alliance::where('internal_name', 'star_alliance')->first();
        $starMembers = [
            'aegean-airlines',
            'air-canada',
            'air-china',
            'air-india',
            'air-new-zealand',
            'all-nippon-airways',
            'asiana',
            'austrian',
            'avianca',
            'brussels-airlines',
            'copa-airlines',
            'croatia-airlines',
            'egyptair',
            'ethiopian-airlines',
            'eva-air',
            'ita-airways',
            'lot-polish-airlines',
            'lufthansa',
            'shenzhen-airlines',
            'singapore-airlines',
            'swiss',
            'tap-portugal',
            'thai-airways-international',
            'turkish-airlines',
            'united-airlines',
        ];

        $oneworld = Alliance::where('internal_name', 'oneworld')->first();
        $oneworldMembers = [
            'alaska-airlines',
            'american-airlines',
            'british-airways',
            'cathay-pacific',
            'fiji-airways',
            'finnair',
            'hawaiian-airlines',
            'iberia',
            'japan-airlines',
            'malaysia-airlines',
            'oman-air',
            'qantas',
            'qatar-airways',
            'royal-air-maroc',
            'royal-jordanian',
            'srilankan'
        ];

        $vanilla = Alliance::where('internal_name', 'vanilla_alliance')->first();
        $vanillaMembers = [
            'air-austral',
            'air-madagascar',
            'air-seychelles',
            'air-mauritius'
        ];

        Airline::whereIn('internal_name', $skyteamMembers)->update(['alliance_id' => $skyteam->id]);
        Airline::whereIn('internal_name', $starMembers)->update(['alliance_id' => $star->id]);
        Airline::whereIn('internal_name', $oneworldMembers)->update(['alliance_id' => $oneworld->id]);
        Airline::whereIn('internal_name', $vanillaMembers)->update(['alliance_id' => $vanilla->id]);
    }

    private function seedAchievements(): void
    {
        $difficulties  = DB::table('achievement_difficulties')->pluck('id', 'internal_name');
        $categories    = DB::table('achievement_categories')->pluck('id', 'internal_name');

        $easy         = $difficulties['easy'];
        $moderate     = $difficulties['moderate'];
        $hard         = $difficulties['hard'];
        $expensive    = $difficulties['expensive'];
        $nearImposs   = $difficulties['near_impossible'];
        $impossible   = $difficulties['impossible'];

        $generalFlying          = $categories['general_flying'];
        $countriesAndContinents = $categories['countries_and_continents'];
        $aircraft               = $categories['aircraft'];
        $airlinesAndAlliances   = $categories['airlines_and_alliances'];
        $funChallenges          = $categories['fun_challenges'];

        $icon = 'standard_achievement.png';

        $achievements = [

            // -----------------------------------------------------------
            // General Flying
            // -----------------------------------------------------------
            [
                'internal_name'            => 'general_flying.first_flight',
                'name'                     => 'Off the Ground',
                'short_description'        => 'Log your very first flight.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $generalFlying,
                'achievement_difficulty_id'=> $easy,
            ],
            [
                'internal_name'            => 'general_flying.domestic_flight',
                'name'                     => 'Home Turf',
                'short_description'        => 'Take a domestic flight.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $generalFlying,
                'achievement_difficulty_id'=> $easy,
            ],
            [
                'internal_name'            => 'general_flying.international_flight',
                'name'                     => 'Passport Stamp Collector',
                'short_description'        => 'Take an international flight.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $generalFlying,
                'achievement_difficulty_id'=> $easy,
            ],
            [
                'internal_name'            => 'general_flying.business_class',
                'name'                     => 'Flatbed Fan',
                'short_description'        => 'Fly in Business Class.',
                'long_description'         => '',
                'icon'                     => $icon,
                'threshold'                 => null,
                'progressive'              => false,
                'difficulty_description'   => null,
                'achievement_category_id'  => $generalFlying,
                'achievement_difficulty_id'=> $expensive,
            ],
            [
                'internal_name'            => 'general_flying.first_class',
                'name'                     => 'Caviar at 35,000 Feet',
                'short_description'        => 'Fly in First Class.',
                'long_description'         => '',
                'icon'                     => $icon,
                'threshold'                 => null,
                'progressive'              => false,
                'difficulty_description'   => null,
                'achievement_category_id'  => $generalFlying,
                'achievement_difficulty_id'=> $expensive,
            ],
            [
                'internal_name'            => 'general_flying.premium_economy',
                'name'                     => 'Legroom Lover',
                'short_description'        => 'Fly in Premium Economy.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $generalFlying,
                'achievement_difficulty_id'=> $expensive,
            ],
            [
                'internal_name'            => 'general_flying.business_or_first',
                'name'                     => 'Turn Left',
                'short_description'        => 'Fly in Business or First Class.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $generalFlying,
                'achievement_difficulty_id'=> $moderate,
            ],
            [
                'internal_name'            => 'general_flying.fly_private',
                'name'                     => 'Wheels Up',
                'short_description'        => 'Fly on a private aircraft.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $generalFlying,
                'achievement_difficulty_id'=> $expensive,
            ],
            [
                'internal_name'            => 'general_flying.general_aviation',
                'name'                     => 'Little Plane, Big Sky',
                'short_description'        => 'Take a general aviation flight.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $generalFlying,
                'achievement_difficulty_id'=> $moderate,
            ],
            [
                'internal_name'            => 'general_flying.domestic_two_countries',
                'name'                     => 'Local Explorer',
                'short_description'        => 'Take domestic flights in two different countries.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $generalFlying,
                'achievement_difficulty_id'=> $moderate,
            ],
            [
                'internal_name'            => 'general_flying.10_flights',
                'name'                     => 'Frequent Flyer in Training',
                'short_description'        => 'Log 10 flights.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => true,
                'threshold'                 => 10,
                'difficulty_description'   => null,
                'achievement_category_id'  => $generalFlying,
                'achievement_difficulty_id'=> $easy,
            ],
            [
                'internal_name'            => 'general_flying.100_flights',
                'name'                     => 'Century in the Sky',
                'short_description'        => 'Log 100 flights.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => true,
                'threshold'                 => 100,
                'difficulty_description'   => null,
                'achievement_category_id'  => $generalFlying,
                'achievement_difficulty_id'=> $moderate,
            ],
            [
                'internal_name'            => 'general_flying.500_flights',
                'name'                     => 'The 500 Club',
                'short_description'        => 'Log 500 flights.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => true,
                'threshold'                 => 500,
                'difficulty_description'   => null,
                'achievement_category_id'  => $generalFlying,
                'achievement_difficulty_id'=> $hard,
            ],
            [
                'internal_name'            => 'general_flying.1000_flights',
                'name'                     => 'Skybound for Life',
                'short_description'        => 'Log 1,000 flights.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => true,
                'threshold'                 => 1000,
                'difficulty_description'   => null,
                'achievement_category_id'  => $generalFlying,
                'achievement_difficulty_id'=> $expensive,
            ],

            // -----------------------------------------------------------
            // Countries & Continents
            // -----------------------------------------------------------
            [
                'internal_name'            => 'countries_continents.intercontinental',
                'name'                     => 'Intercontinental',
                'short_description'        => 'Fly between two different continents.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $countriesAndContinents,
                'achievement_difficulty_id'=> $moderate,
            ],
            [
                'internal_name'            => 'countries_continents.fly_to_africa',
                'name'                     => 'Safari Bound',
                'short_description'        => 'Fly to Africa.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $countriesAndContinents,
                'achievement_difficulty_id'=> $easy,
            ],
            [
                'internal_name'            => 'countries_continents.fly_to_asia',
                'name'                     => 'Orient Express (Air Edition)',
                'short_description'        => 'Fly to Asia.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $countriesAndContinents,
                'achievement_difficulty_id'=> $easy,
            ],
            [
                'internal_name'            => 'countries_continents.fly_to_oceania',
                'name'                     => "G'Day from 35,000 Feet",
                'short_description'        => 'Fly to Oceania.',
                'long_description'         => '',
                'icon'                     => $icon,
                'threshold'                 => null,
                'progressive'              => false,
                'difficulty_description'   => null,
                'achievement_category_id'  => $countriesAndContinents,
                'achievement_difficulty_id'=> $easy,
            ],
            [
                'internal_name'            => 'countries_continents.fly_to_antarctica',
                'name'                     => 'Penguin Spotter',
                'short_description'        => 'Fly to Antarctica.',
                'long_description'         => '',
                'icon'                     => $icon,
                'threshold'                 => null,
                'progressive'              => false,
                'difficulty_description'   => 'Very few commercial or charter services operate to Antarctica, making this extremely difficult to pull off.',
                'achievement_category_id'  => $countriesAndContinents,
                'achievement_difficulty_id'=> $expensive,
            ],
            [
                'internal_name'            => 'countries_continents.fly_to_europe',
                'name'                     => 'Bonjour from Above',
                'short_description'        => 'Fly to Europe.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $countriesAndContinents,
                'achievement_difficulty_id'=> $easy,
            ],
            [
                'internal_name'            => 'countries_continents.fly_to_south_america',
                'name'                     => 'Southern Cross',
                'short_description'        => 'Fly to South America.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $countriesAndContinents,
                'achievement_difficulty_id'=> $easy,
            ],
            [
                'internal_name'            => 'countries_continents.fly_to_north_america',
                'name'                     => 'Stars, Stripes & Contrails',
                'short_description'        => 'Fly to North America.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $countriesAndContinents,
                'achievement_difficulty_id'=> $easy,
            ],

            // -----------------------------------------------------------
            // Aircraft
            // -----------------------------------------------------------
            [
                'internal_name'            => 'aircraft.fly_on_a_plane',
                'name'                     => 'Up, Up and Away',
                'short_description'        => 'Fly on an aeroplane.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => false,
                'threshold'                 => null,
                'difficulty_description'   => null,
                'achievement_category_id'  => $aircraft,
                'achievement_difficulty_id'=> $easy,
            ],
            [
                'internal_name'            => 'aircraft.fly_on_a_helicopter',
                'name'                     => 'Chop Chop',
                'short_description'        => 'Fly on a helicopter.',
                'long_description'         => '',
                'icon'                     => $icon,
                'threshold'                 => null,
                'progressive'              => false,
                'difficulty_description'   => null,
                'achievement_category_id'  => $aircraft,
                'achievement_difficulty_id'=> $moderate,
            ],
            [
                'internal_name'            => 'aircraft.fly_on_a_jet',
                'name'                     => 'Jet Setter',
                'short_description'        => 'Fly on a jet-powered aircraft.',
                'long_description'         => '',
                'icon'                     => $icon,
                'threshold'                 => null,
                'progressive'              => false,
                'difficulty_description'   => null,
                'achievement_category_id'  => $aircraft,
                'achievement_difficulty_id'=> $easy,
            ],
            [
                'internal_name'            => 'aircraft.fly_on_a_prop',
                'name'                     => 'Propeller Head',
                'short_description'        => 'Fly on a propeller driven aircraft.',
                'long_description'         => '',
                'icon'                     => $icon,
                'threshold'                 => null,
                'progressive'              => false,
                'difficulty_description'   => null,
                'achievement_category_id'  => $aircraft,
                'achievement_difficulty_id'=> $moderate,
            ],
            [
                'internal_name'            => 'aircraft.all_boeing_7x7',
                'name'                     => 'Seven Heaven',
                'short_description'        => 'Fly every Boeing 7x7 aircraft family.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => true,
                'difficulty_description'   => 'Requires flying the 707, 717, 727, 737, 747, 757, 767, 777, and 787 — some of which are no longer in commercial service.',
                'threshold'                 => 9,
                'achievement_category_id'  => $aircraft,
                'achievement_difficulty_id'=> $impossible,
            ],
            [
                'internal_name'            => 'aircraft.all_airbus_a3xx',
                'name'                     => 'Airbus Aristocrat',
                'short_description'        => 'Fly every Airbus A3xx aircraft family.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => true,
                'threshold'                 => 10,
                'difficulty_description'   => 'Covers the A300, A310, A318–A321, A330, A340, A350, and A380 families. You are likely going to have to go to Iran to get this one.',
                'achievement_category_id'  => $aircraft,
                'achievement_difficulty_id'=> $nearImposs,
            ],
            [
                'internal_name'            => 'aircraft.quad_engine',
                'name'                     => 'Four on the Floor',
                'short_description'        => 'Fly on a four-engine aircraft.',
                'long_description'         => '',
                'icon'                     => $icon,
                'threshold'                 => null,
                'progressive'              => false,
                'difficulty_description'   => 'Four-engine jets are becoming increasingly rare as twin-engine widebodies dominate long-haul routes.',
                'achievement_category_id'  => $aircraft,
                'achievement_difficulty_id'=> $hard,
            ],
            [
                'internal_name'            => 'aircraft.double_decker',
                'name'                     => 'Upper Deck Club',
                'short_description'        => 'Fly on a double-decker aircraft.',
                'long_description'         => '',
                'icon'                     => $icon,
                'threshold'                 => null,
                'progressive'              => false,
                'difficulty_description'   => 'Primarily the A380 and 747, which operate on a limited and shrinking number of routes.',
                'achievement_category_id'  => $aircraft,
                'achievement_difficulty_id'=> $hard,
            ],
            [
                'internal_name'            => 'aircraft.single_engine',
                'name'                     => 'Solo Spinner',
                'short_description'        => 'Fly on a single-engine aircraft.',
                'long_description'         => '',
                'icon'                     => $icon,
                'threshold'                 => null,
                'progressive'              => false,
                'difficulty_description'   => null,
                'achievement_category_id'  => $aircraft,
                'achievement_difficulty_id'=> $moderate,
            ],
            [
                'internal_name'            => 'aircraft.twin_engine',
                'name'                     => 'Twinsies',
                'short_description'        => 'Fly on a twin-engine aircraft.',
                'long_description'         => '',
                'icon'                     => $icon,
                'threshold'                 => null,
                'progressive'              => false,
                'difficulty_description'   => 'Most planes in service today meet this criteria!',
                'achievement_category_id'  => $aircraft,
                'achievement_difficulty_id'=> $easy,
            ],
            [
                'internal_name'            => 'aircraft.tri_engine',
                'name'                     => 'Triple Threat',
                'short_description'        => 'Fly on a tri-engine aircraft.',
                'long_description'         => '',
                'icon'                     => $icon,
                'threshold'                 => null,
                'progressive'              => false,
                'difficulty_description'   => 'Most tri-jets are out of service nowadays, and tri-props even rarer',
                'achievement_category_id'  => $aircraft,
                'achievement_difficulty_id'=> $nearImposs,
            ],
            [
                'internal_name'            => 'aircraft.smaller_manufacturer',
                'name'                     => 'Break the Duopoly',
                'short_description'        => 'Fly on a scheduled flight on an aircraft from a manufacturer other than Boeing or Airbus.',
                'long_description'         => '',
                'icon'                     => $icon,
                'threshold'                 => null,
                'progressive'              => false,
                'difficulty_description'   => null,
                'achievement_category_id'  => $aircraft,
                'achievement_difficulty_id'=> $moderate,
            ],

            // -----------------------------------------------------------
            // Airlines & Alliances
            // -----------------------------------------------------------
            [
                'internal_name'            => 'airlines_alliances.all_skyteam',
                'name'                     => 'Team Player',
                'short_description'        => 'Fly with every airline in the SkyTeam alliance.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => true,
                'threshold'                 => 18,
                'difficulty_description'   => null,
                'achievement_category_id'  => $airlinesAndAlliances,
                'achievement_difficulty_id'=> $hard,
            ],
            [
                'internal_name'            => 'airlines_alliances.all_oneworld',
                'name'                     => 'One World Wonder',
                'short_description'        => 'Fly with every airline in the Oneworld alliance.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => true,
                'threshold'                 => 16,
                'difficulty_description'   => null,
                'achievement_category_id'  => $airlinesAndAlliances,
                'achievement_difficulty_id'=> $hard,
            ],
            [
                'internal_name'            => 'airlines_alliances.all_star_alliance',
                'name'                     => 'Star Collector',
                'short_description'        => 'Fly with every airline in the Star Alliance.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => true,
                'threshold'                 => 26,
                'difficulty_description'   => null,
                'achievement_category_id'  => $airlinesAndAlliances,
                'achievement_difficulty_id'=> $hard,
            ],
            [
                'internal_name'            => 'airlines_alliances.all_vanilla_alliance',
                'name'                     => 'Plain Extraordinary',
                'short_description'        => 'Fly with every airline in the Vanilla Alliance.',
                'long_description'         => '',
                'icon'                     => $icon,
                'progressive'              => true,
                'threshold'                 => 4,
                'difficulty_description'   => null,
                'achievement_category_id'  => $airlinesAndAlliances,
                'achievement_difficulty_id'=> $hard,
            ],

                // ---------------------------------------------------------------
                // Fun Challenges
                // ---------------------------------------------------------------
                [
                    'internal_name'             => 'fun_challenges.airline_alphabet',
                    'name'                      => 'Fly the Alphabet',
                    'short_description'         => 'Fly with an airline whose IATA code starts with every letter of the alphabet.',
                    'long_description'          => '',
                    'icon'                      => $icon,
                    'progressive'               => true,
                    'threshold'                 => 26,
                    'difficulty_description'    => 'Some letters have very few airlines with a matching IATA code, requiring creative routing.',
                    'achievement_category_id'   => $funChallenges,
                    'achievement_difficulty_id' => $hard,
                ],
                [
                    'internal_name'             => 'fun_challenges.airport_alphabet',
                    'name'                      => 'Visit the Alphabet',
                    'short_description'         => 'Visit an airport whose IATA code starts with every letter of the alphabet.',
                    'long_description'          => '',
                    'icon'                      => $icon,
                    'progressive'               => true,
                    'threshold'                 => 26,
                    'difficulty_description'    => 'Certain letters — particularly Q, X, and Z — have extremely limited airport coverage, making this a serious challenge.',
                    'achievement_category_id'   => $funChallenges,
                    'achievement_difficulty_id' => $nearImposs,
                ],

                // ---------------------------------------------------------------
                // Countries & Continents
                // ---------------------------------------------------------------
                [
                    'internal_name'             => 'countries_continents.all_inhabited_continents',
                    'name'                      => 'Six of One',
                    'short_description'         => 'Fly to all six inhabited continents.',
                    'long_description'          => '',
                    'icon'                      => $icon,
                    'progressive'               => true,
                    'threshold'                 => 6,
                    'difficulty_description'    => null,
                    'achievement_category_id'   => $countriesAndContinents,
                    'achievement_difficulty_id' => $hard,
                ],
                [
                    'internal_name'             => 'countries_continents.all_continents',
                    'name'                      => 'Seven Wonders of the Skies',
                    'short_description'         => 'Fly to all seven continents, including Antarctica.',
                    'long_description'          => '',
                    'icon'                      => $icon,
                    'progressive'               => true,
                    'threshold'                 => 7,
                    'difficulty_description'    => 'Antarctica has no commercial scheduled service — expect a specialist charter or expedition flight.',
                    'achievement_category_id'   => $countriesAndContinents,
                    'achievement_difficulty_id' => $nearImposs,

                ],
                [
                    'internal_name'             => 'countries_continents.all_continent_pairs_one_way',
                    'name'                      => 'Grand Junction',
                    'short_description'         => 'Fly between every possible pair of continents at least one way.',
                    'long_description'          => '',
                    'icon'                      => $icon,
                    'progressive'               => true,
                    'threshold'                 => 21,
                    'difficulty_description'    => 'There are 21 unique continent pairs (excluding Antarctica)',
                    'achievement_category_id'   => $countriesAndContinents,
                    'achievement_difficulty_id' => $hard,
                ],
                [
                    'internal_name'             => 'countries_continents.all_continent_pairs_both_ways',
                    'name'                      => 'There and Back Again',
                    'short_description'         => 'Fly between every possible pair of continents in both directions.',
                    'long_description'          => '',
                    'icon'                      => $icon,
                    'progressive'               => true,
                    'threshold'                 => 36,
                    'difficulty_description'    => "36 different intercontinental flights required, good luck.",
                    'achievement_category_id'   => $countriesAndContinents,
                    'achievement_difficulty_id' => $nearImposs,
                ],


        ];

        DB::table('achievements')->insert($achievements);
    }


    public function down(): void
    {
        // Reverse user_achievements
        Schema::table('user_achievements', function (Blueprint $table) {
            $table->dropColumn('progress');
        });

        // Reverse achievements
        Schema::table('achievements', function (Blueprint $table) {
            $table->text('description')->after('internal_name');
            $table->dropForeign(['achievement_difficulty_id']);
            $table->dropForeign(['achievement_category_id']);
            $table->dropColumn([
                'short_description',
                'long_description',
                'progressive',
                'difficulty_description',
                'achievement_category_id',
                'achievement_difficulty_id',
            ]);
        });

        Schema::dropIfExists('achievement_categories');
        Schema::dropIfExists('achievement_difficulties');
        Schema::dropIfExists('notifications');
    }
};