<?php

namespace App\Models;

use App\Models\Traits\HasAmount;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class Stream extends Model
{
    use HasAmount;
    const TYPE_INCOME = 'income';
    const TYPE_EXPENSE = 'expense';

    const FREQUENCY_ONCE = 'once';
    const FREQUENCY_WEEKLY = 'weekly';
    const FREQUENCY_BIWEEKLY = 'biweekly';
    const FREQUENCY_MONTHLY = 'monthly';
    const FREQUENCY_QUARTERLY = 'quarterly';
    const FREQUENCY_YEARLY = 'yearly';

    protected $fillable = [
        'scenario_id',
        'name',
        'type',
        'amount',
        'frequency',
        'start_date',
        'end_date',
        'bucket_id',
        'description',
        'is_active',
    ];

    protected $casts = [
        'amount' => 'integer',
        'start_date' => 'date',
        'end_date' => 'date',
        'is_active' => 'boolean',
    ];

    public function scenario(): BelongsTo
    {
        return $this->belongsTo(Scenario::class);
    }


    public function bucket(): BelongsTo
    {
        return $this->belongsTo(Bucket::class);
    }

    public static function getTypes(): array
    {
        return [
            self::TYPE_INCOME => 'Income',
            self::TYPE_EXPENSE => 'Expense',
        ];
    }

    public static function getFrequencies(): array
    {
        return [
            self::FREQUENCY_ONCE => 'One-time',
            self::FREQUENCY_WEEKLY => 'Weekly',
            self::FREQUENCY_BIWEEKLY => 'Bi-weekly',
            self::FREQUENCY_MONTHLY => 'Monthly',
            self::FREQUENCY_QUARTERLY => 'Quarterly',
            self::FREQUENCY_YEARLY => 'Yearly',
        ];
    }

    public function getTypeLabel(): string
    {
        return self::getTypes()[$this->type] ?? $this->type;
    }

    public function getFrequencyLabel(): string
    {
        return self::getFrequencies()[$this->frequency] ?? $this->frequency;
    }

    public function getMonthlyEquivalent(): float
    {
        switch ($this->frequency) {
            case self::FREQUENCY_WEEKLY:
                return $this->amount * 4.33; // Average weeks per month
            case self::FREQUENCY_BIWEEKLY:
                return $this->amount * 2.17;
            case self::FREQUENCY_MONTHLY:
                return $this->amount;
            case self::FREQUENCY_QUARTERLY:
                return $this->amount / 3;
            case self::FREQUENCY_YEARLY:
                return $this->amount / 12;
            case self::FREQUENCY_ONCE:
            default:
                return 0;
        }
    }

    /* SCOPES */

    public function scopeByType($query, string $type)
    {
        return $query->where('type', $type);
    }
}