<?php

namespace App\Models\Setting;

use App\Abstracts\Model;
use App\Builders\Category as Builder;
use App\Models\Banking\Transaction;
use App\Models\Document\Document;
use App\Interfaces\Export\WithParentSheet;
use App\Relations\HasMany\Category as HasMany;
use App\Scopes\Category as Scope;
use App\Traits\Categories;
use App\Traits\DateTime;
use App\Traits\Tailwind;
use App\Traits\Transactions;
use Illuminate\Database\Eloquent\Builder as EloquentBuilder;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model as EloquentModel;

class Category extends Model
{
    use Categories, HasFactory, Tailwind, Transactions, DateTime;

    public const INCOME_TYPE = 'income';
    public const EXPENSE_TYPE = 'expense';
    public const ITEM_TYPE = 'item';
    public const OTHER_TYPE = 'other';

    protected $table = 'categories';

    protected $appends = ['display_name', 'color_hex_code'];

    /**
     * Attributes that should be mass-assignable.
     *
     * @var array
     */
    protected $fillable = ['company_id', 'code', 'name', 'type', 'color', 'description', 'enabled', 'created_from', 'created_by', 'parent_id'];

    /**
     * Sortable columns.
     *
     * @var array
     */
    public $sortable = ['code', 'name', 'type', 'enabled'];

    /**
     * The "booted" method of the model.
     *
     * @return void
     */
    protected static function booted()
    {
        static::addGlobalScope(new Scope);
    }

    /**
     * Create a new Eloquent query builder for the model.
     *
     * @param  \Illuminate\Database\Query\Builder  $query
     * @return \App\Builders\Category
     */
    public function newEloquentBuilder($query)
    {
        return new Builder($query);
    }

    /**
     * Instantiate a new HasMany relationship.
     *
     * @param  EloquentBuilder  $query
     * @param  EloquentModel  $parent
     * @param  string  $foreignKey
     * @param  string  $localKey
     * @return HasMany
     */
    protected function newHasMany(EloquentBuilder $query, EloquentModel $parent, $foreignKey, $localKey)
    {
        return new HasMany($query, $parent, $foreignKey, $localKey);
    }

    /**
     * Retrieve the model for a bound value.
     *
     * @param  mixed  $value
     * @param  string|null  $field
     * @return \Illuminate\Database\Eloquent\Model|null
     */
    public function resolveRouteBinding($value, $field = null)
    {
        return $this->resolveRouteBindingQuery($this, $value, $field)
            ->withoutGlobalScope(Scope::class)
            ->getWithoutChildren()
            ->first();
    }

    public function categories()
    {
        return $this->hasMany(Category::class, 'parent_id')->withSubCategory();
    }

    public function sub_categories()
    {
        return $this->hasMany(Category::class, 'parent_id')->withSubCategory()->with('categories')->orderBy('name');
    }

    public function documents()
    {
        return $this->hasMany('App\Models\Document\Document');
    }

    public function bills()
    {
        return $this->documents()->where('documents.type', Document::BILL_TYPE);
    }

    public function expense_transactions()
    {
        return $this->transactions()->whereIn('transactions.type', (array) $this->getExpenseTypes());
    }

    public function income_transactions()
    {
        return $this->transactions()->whereIn('transactions.type', (array) $this->getIncomeTypes());
    }

    public function invoices()
    {
        return $this->documents()->where('documents.type', Document::INVOICE_TYPE);
    }

    public function items()
    {
        return $this->hasMany('App\Models\Common\Item');
    }

    public function transactions()
    {
        return $this->hasMany('App\Models\Banking\Transaction');
    }

    /**
     * Scope code.
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @param $code
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeCode($query, $code)
    {
        return $query->where('code', $code);
    }

    /**
     * Scope to only include categories of a given type.
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @param mixed $types
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeType($query, $types)
    {
        if (empty($types)) {
            return $query;
        }

        return $query->whereIn($this->qualifyColumn('type'), (array) $types);
    }

    /**
     * Scope to include only income.
     * Uses Categories trait to support multiple income types (e.g. from modules).
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeIncome($query)
    {
        return $query->whereIn($this->qualifyColumn('type'), $this->getIncomeCategoryTypes());
    }

    /**
     * Scope to include only expense.
     * Uses Categories trait to support multiple expense types (e.g. from modules).
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeExpense($query)
    {
        return $query->whereIn($this->qualifyColumn('type'), $this->getExpenseCategoryTypes());
    }

    /**
     * Scope to include only item.
     * Uses Categories trait to support multiple item types (e.g. from modules).
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeItem($query)
    {
        return $query->whereIn($this->qualifyColumn('type'), $this->getItemCategoryTypes());
    }

    /**
     * Scope to include only other.
     * Uses Categories trait to support multiple other types (e.g. from modules).
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeOther($query)
    {
        return $query->whereIn($this->qualifyColumn('type'), $this->getOtherCategoryTypes());
    }

    public function scopeName($query, $name)
    {
        return $query->where('name', '=', $name);
    }

    /**
     * Scope gets only parent categories.
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeWithSubCategory($query)
    {
        return $query->withoutGlobalScope(new Scope);
    }

    /**
     * Scope gets only parent categories.
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeIsNotSubCategory($query)
    {
        return $query->whereNull('parent_id');
    }

    /**
     * Scope to export the rows of the current page filtered and sorted.
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @param $ids
     * @param $sort
     * @param $id_field
     *
     * @return \Illuminate\Support\LazyCollection
     */
    public function scopeCollectForExport($query, $ids = [], $sort = 'name', $id_field = 'id')
    {
        $request = request();

        if (!empty($ids)) {
            $query->whereIn($id_field, (array) $ids);
        }

        $search = $request->get('search');

        $query->withSubCategory();

        $query->usingSearchString($search)->sortable($sort);

        $page = (int) $request->get('page');
        $limit = (int) $request->get('limit', setting('default.list_limit', '25'));
        $offset = $page ? ($page - 1) * $limit : 0;

        if (! $this instanceof WithParentSheet && count((array) $ids) < $limit) {
            $query->offset($offset)->limit($limit);
        }

        return $query->cursor();
    }

    /**
     * Get the hex code of the color.
     */
    public function getColorHexCodeAttribute(): string
    {
        $color = $this->color ?? 'green-500';

        return $this->getHexCodeOfTailwindClass($color);
    }

    /**
     * Get the display name of the category.
     */
    public function getDisplayNameAttribute(): string
    {
        $typeConfig = config('type.category.' . $this->type, []);
        $hideCode = isset($typeConfig['hide']) && in_array('code', $typeConfig['hide']);

        $typeNames = $this->getCategoryTypes();
        $typeName = $typeNames[$this->type] ?? ucfirst($this->type);

        $prefix = (!$hideCode && $this->code) ? $this->code . ' - ' : '';

        return $prefix . $this->name . ' (' . $typeName . ')';
    }

    /**
     * Get the balance of a category.
     *
     * @return double
     */
    public function getBalanceAttribute()
    {
        // If view composer has set the balance, return it directly
        if (isset($this->de_balance)) {
            return $this->de_balance;
        }

        $financial_year = $this->getFinancialYear();

        $start_date = $financial_year->getStartDate();
        $end_date = $financial_year->getEndDate();

        $this->transactions->whereBetween('paid_at', [$start_date, $end_date])
            ->each(function ($transaction) use (&$incomes, &$expenses) {
                if (($transaction->isNotIncome() && $transaction->isNotExpense()) || $transaction->isTransferTransaction()) {
                    return;
                }

                if ($transaction->isIncome()) {
                    $incomes += $transaction->getAmountConvertedToDefault();
                } else {
                    $expenses += $transaction->getAmountConvertedToDefault();
                }
            });

        $balance = $incomes - $expenses;

        $this->sub_categories()
            ->each(function ($sub_category) use (&$balance) {
                $balance += $sub_category->balance;
            });

        return $balance;
    }

    /**
     * Get the balance of a category without considering sub categories.
     *
     * @return double
     */
    public function getBalanceWithoutSubcategoriesAttribute()
    {
        // If view composer has set the balance, return it directly
        if (isset($this->without_subcategory_de_balance)) {
            return $this->without_subcategory_de_balance;
        }

        $financial_year = $this->getFinancialYear();

        $start_date = $financial_year->getStartDate();
        $end_date = $financial_year->getEndDate();

        $this->transactions->whereBetween('paid_at', [$start_date, $end_date])
            ->each(function ($transaction) use (&$incomes, &$expenses) {
                if (($transaction->isNotIncome() && $transaction->isNotExpense()) || $transaction->isTransferTransaction()) {
                    return;
                }

                if ($transaction->isIncome()) {
                    $incomes += $transaction->getAmountConvertedToDefault();
                } else {
                    $expenses += $transaction->getAmountConvertedToDefault();
                }
            });

        $balance = $incomes - $expenses;

        return $balance;
    }

    /**
     * Get the line actions.
     *
     * @return array
     */
    public function getLineActionsAttribute()
    {
        $actions = [];

        $actions[] = [
            'title' => trans('general.edit'),
            'icon' => 'create',
            'url' => route('categories.edit', $this->id),
            'permission' => 'update-settings-categories',
            'attributes' => [
                'id' => 'index-line-actions-edit-category-' . $this->id,
            ],
        ];

        if ($this->isTransferCategory()) {
            return $actions;
        }

        $actions[] = [
            'type' => 'delete',
            'icon' => 'delete',
            'route' => 'categories.destroy',
            'permission' => 'delete-settings-categories',
            'attributes' => [
                'id' => 'index-line-actions-delete-category-' . $this->id,
            ],
            'model' => $this,
        ];

        return $actions;
    }

    /**
     * A no-op callback that gets fired when a model is cloning but before it gets
     * committed to the database
     *
     * @param  Illuminate\Database\Eloquent\Model $src
     * @param  boolean $child
     * @return void
     */
    public function onCloning($src, $child = null)
    {
        $this->code = $this->getNextCategoryCode();
    }

    /**
     * Create a new factory instance for the model.
     *
     * @return \Illuminate\Database\Eloquent\Factories\Factory
     */
    protected static function newFactory()
    {
        return \Database\Factories\Category::new();
    }
}