<?php

namespace App\Models;

use App\Models\ReportableRelation;
use Carbon\Carbon;
use App\Models\Tag;
use App\Models\User;
use App\Models\Work;
use App\Models\Model;
use App\Models\Comment;
use App\Models\Project;
use App\Models\TagTask;
use App\Models\Business;
use Illuminate\Validation\Rule;
use Illuminate\Support\Facades\DB;
use Illuminate\Validation\Rules\RequiredIf;
use Illuminate\Database\Eloquent\Factories\HasFactory;

class Task extends Model
{
    use HasFactory;
    protected $fillable = [
        'business_id', 'project_id', 'creator_id', 'workflow_id', 'assignee_id',  'system_id', 'sprint_id',
        'status_id', 'approver_id', 'title', 'description', 'priority', 'on_time', 'estimated_time', 'due_date', 'completed_at',
        'work_start', 'spent_time', 'work_finish', 'ready_to_test', 'watchers', 'tags'
    ];

    protected $reportable = [
        'priority', 'title', 'description', 'priority', 'on_time', 'estimated_time', 'due_date', 'completed_at',
        'work_finish', 'ready_to_test', 'assignee_id', 'approver_id', ['tags' => 'tag_task']
    ];
    protected $fillable_relations = [
        'tags'
    ];

    protected $casts = [
        'work_start' => 'datetime:Y-m-d H:i',
        'work_finish' => 'datetime:Y-m-d H:i',
        'watchers' => 'array',
    ];

    public function rules()
    {
//        dd(\request('_business_info')['info']['workflows']->toArray());
        $validations = [
            'assignee_id' => ['nullable', 'numeric',
                function ($attribute, $value, $fail) {
                    //check assignee at least guest in project
                    if (!can('isProjectGuest', ['project_id' => request()->route('project'), 'user_id' => $value])) {
                        $fail('The selected '.$attribute.' is invalid.');
                    }
                    if (request()->method() === 'PUT' && ($this->assignee_id != $value && Work::where('task_id', $this->id)->exists())) {
                        //when update execute
                        //check if change assignee then should be on task not work set
                        $fail('The selected '.$attribute.' is invalid.');
                    }
                }],
            'system_id' => ['nullable', 'numeric',
                Rule::in(\request('_business_info')['info']['projects'][request()->route('project')]['systems'])],
            'sprint_id' => ['nullable', 'numeric',
                Rule::in(\request('_business_info')['info']['projects'][request()->route('project')]['sprints'])],
            'workflow_id' => ['required', 'numeric',
                Rule::in(array_keys(\request('_business_info')['info']['workflows']->toArray()))],
            'status_id' => 'required|numeric',
            'approver_id' => ['nullable', 'numeric',
                function ($attribute, $value, $fail) {
                    //check approval at least colleague in project
                    if (!can('isProjectColleague', ['project_id' => request()->route('project'), 'user_id' => $value])) {
                        $fail('The selected '.$attribute.' is invalid.');
                    }
                }],
            'title' => 'required|string|min:3|max:254',
            'description' => 'nullable|string|min:2|max:1000',
            'priority' => 'nullable|numeric|between:1,10',
            'estimated_time' => 'bail|nullable|numeric',
            'due_date' => 'bail|nullable|date|date_format:Y-m-d|after_or_equal:'.
                ((request()->method() === 'POST') ? date('yy-m-d') : $this->created_at->toDateString()),
            'tags' => 'nullable|array',
            'tags.*' => [new RequiredIf(isset($request->tags)), 'numeric',
                Rule::in(\request('_business_info')['info']['tags'])],
        ] ;
        $workflow_id = $this->workflow_id;
        if (request()->filled('workflow_id') && isset(request('_business_info')['info']['workflows'][request()->workflow_id])) {
            $workflow_id = request()->workflow_id;
        }
        if (isset($workflow_id)) {
            $validations['status_id'] = ['bail', 'required', 'numeric',
                //check status exists in status list
                Rule::in(\request('_business_info')['info']['workflows'][$workflow_id]['statuses']),
                function ($attribute, $value, $fail) use ($workflow_id) {
                    //check not close or done
                    $state = \request('_business_info')['workflows'][$workflow_id]['statuses'][$value]['state'];
                    if (request()->method() == 'POST' && ($state == enum('status.states.close.id') || $state == enum('status.states.done.id'))) {
                        $fail('The selected '.$attribute.' is invalid.');
                    }
                    if ((request()->method() == 'PUT') && !can('projectTasks', ['project_id' => request()->route('project')])
                        && $state != enum('status.states.active.id')) {
                        $fail('The selected '.$attribute.' is invalid.');
                    }
                }];
        }

        return $validations;
    }
    public function updateRelations()
    {
        // tags relations
        $this->dirties['tags'] = $this->tags()->sync($this->filled_relations['tags']);

        //old code
//        if (!empty($this->filled_relations['tags'])) {
//            $this->dirties['tags'] = $this->tags()->sync($this->filled_relations['tags']);
//        }

    }

    public function getValueOf(?string $key)
    {
        $values = [
            'business_id' => $this->business_id,
            'project_id' => $this->project_id,
            'sprint_id' => $this->sprint_id,
            'workflow_id' => $this->workflow_id,
            'status_id' => $this->status_id,
            'system_id' => $this->system_id,
            'task_id' => $this->id,
            'subject_id' => $this->id,
            'user_id' => $this->assignee_id,
        ];

        if ($key && isset($values, $key)) {
            return $values[$key];
        }

        return $values;
    }

    public function business()
    {
        return $this->belongsTo(Business::class, 'business_id', 'id', __FUNCTION__);
    }

    public function creator()
    {
        return $this->belongsTo(User::class, 'creator_id', 'id', __FUNCTION__);
    }

    public function user()
    {
        return $this->belongsTo(User::class, 'user_id', 'id', __FUNCTION__);
    }

    public function project()
    {
        return $this->belongsTo(Project::class, 'project_id', 'id', __FUNCTION__);
    }

    public function tags()
    {
        return $this->belongsToMany(Tag::class)->using(ReportableRelation::class);
    }

    // Todo: are we need this relation????
    public function tagTask()
    {
        return $this->hasMany(TagTask::class, 'task_id', 'id');
    }

    public function works()
    {
        return $this->hasMany(Work::class, 'task_id', 'id');
    }

    public function comments()
    {
        return $this->hasMany(Comment::class, 'task_id', 'id');
    }

    public function scopePriorityMin($query, $min)
    {
        return $query->where('tasks.priority', '>=', $min);
    }
    public function scopePriorityMax($query, $max)
    {
        return $query->where('tasks.priority', '<=', $max);
    }
    public function scopeCreatesBefore($query, $date)
    {
        //ToDo: comment lines have better performance but should be test
//        return $query->whereDate('tasks.created_at', '<=', Carbon::parse($date.' 23:59:59'));
//        return $query->where('tasks.created_at', '<', (new DateTime('2014-07-10'))->modify('+1 day')->format('Y-m-d'));
        return $query->whereDate('tasks.created_at', '<=', Carbon::parse($date));
    }
    public function scopeCreatesAfter($query, $date)
    {
        return $query->whereDate('tasks.created_at', '>=', Carbon::parse($date));
    }
    public function scopeCreatesIn($query, $days)
    {
        return $query->whereDate('tasks.created_at', '>=', Carbon::now()->modify('-'.$days.' day')->toDate());
    }
    public function scopeUpdatesBefore($query, $date)
    {
        return $query->whereDate('tasks.updated_at', '<=', Carbon::parse($date));
    }
    public function scopeUpdatesAfter($query, $date)
    {
        return $query->whereDate('tasks.updated_at', '>=', Carbon::parse($date));
    }
    public function scopeUpdatesIn($query, $days)
    {
        return $query->whereDate('tasks.updated_at', '>=', Carbon::now()->modify('-'.$days.' day')->toDate());
    }
    public function scopeSpentFrom($query, $minute)
    {
        return $query->where('tasks.spent_time', '>=', $minute);
    }
    public function scopeSpentTo($query, $minute)
    {
        return $query->where('tasks.spent_time', '<=', $minute);
    }
    public function scopeEstimatedFrom($query, $minute)
    {
        return $query->where('tasks.estimated_time', '>=', $minute);
    }
    public function scopeEstimatedTo($query, $minute)
    {
        return $query->where('tasks.estimated_time', '<=', $minute);
    }
    public function scopeStartsBefore($query, $date)
    {
        return $query->whereDate('tasks.work_start', '<=', Carbon::parse($date));
    }
    public function scopeStartsAfter($query, $date)
    {
        return $query->whereDate('tasks.work_start', '>=', Carbon::parse($date));
    }
    public function scopeStartsIn($query, $days)
    {
        return $query->whereDate('tasks.work_start', '>=', Carbon::now()->modify('-'.$days.' day')->toDate());
    }
    public function scopeFinishBefore($query, $date)
    {
        return $query->whereDate('tasks.work_finish', '<=', Carbon::parse($date));
    }
    public function scopeFinishAfter($query, $date)
    {
        return $query->whereDate('tasks.work_finish', '>=', Carbon::parse($date));
    }
    public function scopeFinishIn($query, $days)
    {
        return $query->whereDate('tasks.work_finish', '>=', Carbon::now()->modify('-'.$days.' day')->toDate());
    }
    public function scopeCompletesBefore($query, $date)
    {
        return $query->where('tasks.completed_at', '<=', $date);
    }
    public function scopeCompletesAfter($query, $date)
    {
        return $query->where('tasks.completed_at', '>=', $date);
    }
    public function scopeCompletesIn($query, $days)
    {
        return $query->whereDate('tasks.completed_at', '>=', Carbon::now()->modify('-'.$days.' day')->toDate());
    }
    public function scopeDueDateBefore($query, $date)
    {
        return $query->where('tasks.due_date', '<=', $date);
    }
    public function scopeDueDateAfter($query, $date)
    {
        return $query->where('tasks.due_date', '>=', $date);
    }
    public function scopeDueDateIn($query, $days)
    {
        return $query->whereDate('tasks.due_date', '>=', Carbon::now()->modify('-'.$days.' day')->toDate());
    }
    public function scopeOverSpentFrom($query, $minute)
    {
        return $query->whereColumn('spent_time', '>', 'estimated_time')
            ->having('over_spent', '>=', $minute);
    }
    public function scopeOverSpentTo($query, $minute)
    {
        return $query->whereColumn('spent_time', '>', 'estimated_time')
            ->having('over_spent', '<=', $minute);
    }
    public function scopeMyWatching($query)
    {
        return $query->whereJsonContains('watchers', auth()->id());
    }
    public function scopeOverDue($query)
    {
        return $query->whereColumn('due_date', '<', 'completed_at');
    }
    public function scopeReport($query, $group_field)
    {
        return $query->select(DB::raw($group_field.' , status_id, COUNT(*) as total, SUM(spent_time) as spent_sum,
                        SUM(estimated_time) as estimated_sum,SUM(ready_to_test) as test_sum,
                         COUNT(completed_at) as completed_total, SUM(on_time) as on_time_total,
                         SUM(Case When spent_time > estimated_time Then (spent_time - estimated_time) Else 0 End) as over_spent_sum,
                         SUM(Case When (spent_time <= estimated_time) And (completed_at) Then (estimated_time - spent_time) Else 0 End)
                         as under_spent_sum'))
            ->groupBy($group_field, 'status_id');
    }
}