<?php

namespace Database\Seeders;

use Illuminate\Database\Seeder;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Str;
use Illuminate\Support\Facades\DB;
use Carbon\Carbon;
use App\Models\User;

class DatabaseSeeder extends Seeder
{
    public function run(): void
    {
        /**
         *
         * admin users
         */

        // credentials from .env (with sensible fall-backs)
        $email     = env('ADMIN_EMAIL',     'admin@example.com');
        $password  = env('ADMIN_PASSWORD',  'changeme');
        $firstname = env('ADMIN_FIRSTNAME', 'Admin');
        $lastname  = env('ADMIN_LASTNAME',  'Account');
        $timezone  = env('APP_TIMEZONE',    'UTC');

        // create or update the admin user
        $user = User::updateOrCreate(
            ['email' => $email],
            [
                'firstname'   => $firstname,
                'lastname'    => $lastname,
                'timezone'    => $timezone,
                'password'    => Hash::make($password),
            ]
        );

        // fill the sabre-friendly columns
        $user->update([
            'uri'         => 'principals/'.$user->email,
            'displayname' => $firstname.' '.$lastname,
        ]);

        /**
         *
         * calendar and meta
         */

        // sample caldav data
        $calId = DB::table('calendars')->insertGetId([
            'synctoken'   => 1,
            'components'  => 'VEVENT',
        ]);

        $instanceId = DB::table('calendarinstances')->insertGetId([
            'calendarid'    => $calId,
            'principaluri'  => $user->uri,          // uses new column
            'uri'           => Str::uuid(),
            'displayname'   => 'Sample Calendar',
            'description'   => 'Seeded calendar',
            'calendarorder' => 0,
            'calendarcolor' => '#0038ff',
            'timezone'      => $timezone,
        ]);

        DB::table('calendar_meta')->updateOrInsert(
            ['calendar_id' => $calId], // @todo should this be calendar id or instance id?
            ['color' => '#0038ff']
        );

        /**
         *
         * create helper function for events to be added
         **/

        $insertEvent = function (Carbon $start, string $summary) use ($calId) {

            // set base vars
            $uid  = Str::uuid().'@kithkin.lan';
            $end = $start->copy()->addHour();

            // create UTC copies for the ICS fields
            $dtstamp = $start->copy()->utc()->format('Ymd\\THis\\Z');
            $dtstart = $start->copy()->utc()->format('Ymd\\THis\\Z');
            $dtend = $end->copy()->utc()->format('Ymd\\THis\\Z');

            $ical = <<<ICS
BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Kithkin//Laravel CalDAV//EN
BEGIN:VEVENT
UID:$uid
DTSTAMP:$dtstamp
DTSTART:$dtstart
DTEND:$dtend
SUMMARY:$summary
DESCRIPTION:Automatically seeded event
LOCATION:Home Office
END:VEVENT
END:VCALENDAR
ICS;

            $eventId = DB::table('calendarobjects')->insertGetId([
                'calendarid'    => $calId,
                'uri'           => Str::uuid().'.ics',
                'lastmodified'  => time(),
                'etag'          => md5($ical),
                'size'          => strlen($ical),
                'componenttype' => 'VEVENT',
                'uid'           => $uid,
                'calendardata'  => $ical,
            ]);

            DB::table('event_meta')->updateOrInsert(
                ['event_id' => $eventId],
                [
                    'title'       => $summary,
                    'description' => 'Automatically seeded event',
                    'location'    => 'Home Office',
                    'all_day'     => false,
                    'category'    => 'Demo',
                    'start_at'    => $start->copy()->utc(),
                    'end_at'      => $end->copy()->utc(),
                    'created_at'  => now(),
                    'updated_at'  => now(),
                ]
            );
        };

        /**
         *
         * create events
         */

        $now = Carbon::now()->setSeconds(0);

        // 3 events today
        $insertEvent($now->copy(), 'Playground with James');
        $insertEvent($now->copy()->addHours(2), 'Lunch with Daniel');
        $insertEvent($now->copy()->addHours(4), 'Baseball practice');

        // 1 event 3 days ago
        $past = $now->copy()->subDays(3)->setTime(10, 0);
        $insertEvent($past, 'Kids doctors appointments');

        // 1 event 2 days ahead
        $future2 = $now->copy()->addDays(2)->setTime(14, 0);
        $insertEvent($future2, 'Teacher conference (Nuthatches)');

        // 2 events 5 days ahead
        $future5a = $now->copy()->addDays(5)->setTime(9, 0);
        $future5b = $future5a->copy()->addHours(2);
        $insertEvent($future5a, 'Teacher conference (3rd grade)');
        $insertEvent($future5b, 'Family game night');

        /**
         *
         * address books
         *
         */

        // create cards
        $bookId = DB::table('addressbooks')->insertGetId([
            'principaluri' => $user->uri,
            'uri'          => 'default',
            'displayname'  => 'Default Address Book',
        ]);

        $vcard = <<<VCF
BEGIN:VCARD
VERSION:3.0
FN:Seeded Contact
EMAIL:seeded@example.com
TEL:+1-555-123-4567
UID:seeded-contact-001
END:VCARD
VCF;

        DB::table('addressbook_meta')->insert([
            'addressbook_id' => $bookId,
            'color'          => '#ff40ff',
            'is_default'     => true,
            'settings'       => null,
            'created_at'     => now(),
            'updated_at'     => now(),
        ]);

        $cardId = DB::table('cards')->insertGetId([
            'addressbookid' => $bookId,
            'uri'           => Str::uuid().'.vcf',
            'lastmodified'  => now()->timestamp,
            'etag'          => md5($vcard),
            'size'          => strlen($vcard),
            'carddata'      => $vcard,
        ]);

        DB::table('contact_meta')->insert([
            'card_id'    => $cardId,
            'avatar_url' => null,
            'tags'       => 'demo,seed',
            'notes'      => 'Seeded contact from DatabaseSeeder.',
            'created_at' => now(),
            'updated_at' => now(),
        ]);

    }
}