<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Str;

class Project extends Model
{
    use HasFactory;

    protected $fillable = [
        'name',
        'mail_template',
        'mail_subject',
        'mail_frequency',
        'mail_day',
        'download_path',
    ];

    public static function saveWithFormData(mixed $formData)
    {
        $uniqueIdentifier = ['id' => $formData['id'] ?? null];
        $project = Project::updateOrCreate($uniqueIdentifier, $formData);
        $project->upsertBoundingBox($formData);
        $project->upsertMailRecipients($formData);
    }

    private function upsertBoundingBox($formData)
    {
        $boundingBoxesData = array_map(function ($boundingBox) {
            $boundingBox['project_id'] = $this->id;
            unset($boundingBox['created_at']);
            unset($boundingBox['updated_at']);
            $boundingBox['id'] ??= null;
            return $boundingBox;
        }, $formData['boundingBoxes'] ?? []);

        ProjectBoundingBox::upsert(
            $boundingBoxesData,
            ['id', 'project_id'],
            [
                'name',
                'top_left_latitude',
                'top_left_longitude',
                'bottom_right_latitude',
                'bottom_right_longitude'
            ]
        );
    }

    private function upsertMailRecipients($formData)
    {
        $mailRecipientsData = array_map(function ($mailRecipient) {
            $mailRecipient['project_id'] = $this->id;
            unset($mailRecipient['created_at']);
            unset($mailRecipient['updated_at']);
            $mailRecipient['id'] ??= null;
            return $mailRecipient;
        }, $formData['mail_recipients'] ?? []);
        ProjectEmailRecipient::upsert(
            $mailRecipientsData,
            ['id', 'project_id'],
            ['name', 'email',]
        );
    }

    private function getMosaicPath()
    {
        return sprintf('%s/%s', $this->download_path, 'weekly_mosaic');
    }

    public function getMosaicList(): \Illuminate\Support\Collection
    {
        return collect(Storage::files($this->getMosaicPath()))
            ->filter(fn($file) => Str::endsWith($file, '.tif'))
            ->sortByDesc(function ($file) {
                $parts = explode('_', str_replace('.tif', '', $file));
                $week = $parts[1];
                $year = $parts[2];
                return $year.sprintf('%02d', $week);
            })
            ->values();
    }

    protected static function boot()
    {
        parent::boot(); // TODO: Change the autogenerated stub

        static::deleting(function ($project) {
            $project->boundingBoxes()->delete();
            $project->emailRecipients()->delete();
            $project->mailings()->each(function ($mailing) {
                $mailing->attachments()->delete();
                $mailing->recipients()->delete();
            });
            $project->mailings()->delete();
        });
    }

    public function reports()
    {
        return $this->hasMany(ProjectReport::class);
    }

    public function getAttachmentPathAttribute()
    {
        return storage_path(sprintf('%s/attachments', $this->download_path));

        return '/storage/'.$this->download_path.'/attachments';
    }

    public function boundingBoxes()
    {
        return $this->hasMany(ProjectBoundingBox::class);
    }

    public function emailRecipients()
    {
        return $this->hasMany(ProjectEmailRecipient::class);
    }

    public function mailings()
    {
        return $this->hasMany(ProjectMailing::class);
    }

    public function downloads()
    {
        return $this->hasMany(ProjectDownload::class);
    }

    public function allMosaicsPresent(Carbon $endDate)
    {
        // end date is in the future
        if ($endDate->isFuture()) {
            throw new \Exception('End date is in the future');
        }

        $mosaicsNotPresentInFilesystem = $this->getMosiacFilenameListByEndDate($endDate)
            ->filter(function ($filename) {
                return !$this->getMosaicList()->contains(function ($mosaicFilename) use ($filename) {
                    return Str::endsWith( $mosaicFilename, substr($filename, -16));
                });
            });
        if ($mosaicsNotPresentInFilesystem->count() === 0) {
            return true;
        }
        $message = sprintf(
            'Missing mosaics: %s',
            $mosaicsNotPresentInFilesystem->implode(', ')
        );
        throw new \Exception($message);
    }

    public function getMosiacFilenameListByEndDate(Carbon $endDate): \Illuminate\Support\Collection
    {
        $result = collect([]);
        for ($i = 0; $i < 4; $i++) {
            $week = $endDate->weekOfYear;
            $year = $endDate->year;
            if ($week === 53) {
                $year--;
            }

            $result->add(sprintf('week_%02d_%04d.tif', $week, $year));

            $endDate = $endDate->subWeek();
        }
        return $result;
    }


}