<?php

namespace Database\Factories;

use App\Enums\BucketAllocationTypeEnum;
use App\Enums\BucketTypeEnum;
use App\Models\Bucket;
use App\Models\Scenario;
use Illuminate\Database\Eloquent\Factories\Factory;

/**
 * @extends Factory<Bucket>
 */
class BucketFactory extends Factory
{
    public function definition(): array
    {
        // Unlimited excluded — use ->overflow() state modifier
        $allocationType = $this->faker->randomElement([
            BucketAllocationTypeEnum::FIXED_LIMIT,
            BucketAllocationTypeEnum::PERCENTAGE,
        ]);

        return [
            'scenario_id' => Scenario::factory(),
            // Overflow excluded — use ->overflow() state modifier
            'type' => $this->faker->randomElement([
                BucketTypeEnum::NEED,
                BucketTypeEnum::WANT,
            ]),
            'name' => $this->faker->randomElement([
                'Monthly Expenses',
                'Emergency Fund',
                'Investments',
                'Vacation Fund',
                'Car Maintenance',
                'Home Repairs',
                'Health & Medical',
                'Education',
                'Entertainment',
                'Groceries',
                'Clothing',
                'Gifts',
            ]),
            'priority' => $this->faker->numberBetween(1, 10),
            'sort_order' => $this->faker->numberBetween(0, 10),
            'allocation_type' => $allocationType,
            'allocation_value' => $this->getAllocationValueForType($allocationType),
            'buffer_multiplier' => 0,
            'starting_amount' => $this->faker->numberBetween(0, 100000), // $0 to $1000 in cents
        ];
    }

    /**
     * Create a fixed limit bucket.
     *
     * @param  int|null  $amountInCents  Capacity in cents (e.g., 50000 = $500)
     */
    public function fixedLimit(?int $amountInCents = null): Factory
    {
        $amountInCents = $amountInCents ?? $this->faker->numberBetween(50000, 500000);

        return $this->state([
            'allocation_type' => BucketAllocationTypeEnum::FIXED_LIMIT,
            'allocation_value' => $amountInCents,
        ]);
    }

    /**
     * Create a percentage bucket.
     *
     * @param  int|null  $basisPoints  Percentage in basis points (e.g., 2500 = 25%)
     */
    public function percentage(?int $basisPoints = null): Factory
    {
        $basisPoints = $basisPoints ?? $this->faker->numberBetween(1000, 5000);

        return $this->state([
            'allocation_type' => BucketAllocationTypeEnum::PERCENTAGE,
            'allocation_value' => $basisPoints,
        ]);
    }

    /**
     * Create an unlimited bucket.
     */
    public function unlimited(): Factory
    {
        return $this->state([
            'allocation_type' => BucketAllocationTypeEnum::UNLIMITED,
            'allocation_value' => null,
        ]);
    }

    /**
     * Create a need bucket.
     */
    public function need(): Factory
    {
        return $this->state([
            'type' => BucketTypeEnum::NEED,
        ]);
    }

    /**
     * Create a want bucket.
     */
    public function want(): Factory
    {
        return $this->state([
            'type' => BucketTypeEnum::WANT,
        ]);
    }

    /**
     * Create an overflow bucket.
     */
    public function overflow(): Factory
    {
        return $this->state([
            'type' => BucketTypeEnum::OVERFLOW,
            'allocation_type' => BucketAllocationTypeEnum::UNLIMITED,
            'allocation_value' => null,
        ]);
    }

    /**
     * Create a bucket with a buffer multiplier.
     */
    public function withBuffer(float $multiplier): Factory
    {
        return $this->state([
            'buffer_multiplier' => $multiplier,
        ]);
    }

    /**
     * Create default buckets set (Monthly Expenses, Emergency Fund, Overflow).
     */
    public function defaultSet(): array
    {
        return [
            $this->state([
                'name' => 'Monthly Expenses',
                'type' => BucketTypeEnum::NEED,
                'priority' => 1,
                'sort_order' => 1,
                'allocation_type' => BucketAllocationTypeEnum::FIXED_LIMIT,
                'allocation_value' => 0,
                'starting_amount' => 0,
            ]),
            $this->state([
                'name' => 'Emergency Fund',
                'type' => BucketTypeEnum::NEED,
                'priority' => 2,
                'sort_order' => 2,
                'allocation_type' => BucketAllocationTypeEnum::FIXED_LIMIT,
                'allocation_value' => 0,
                'starting_amount' => 0,
            ]),
            $this->state([
                'name' => 'Overflow',
                'type' => BucketTypeEnum::OVERFLOW,
                'priority' => 3,
                'sort_order' => 3,
                'allocation_type' => BucketAllocationTypeEnum::UNLIMITED,
                'allocation_value' => null,
                'starting_amount' => 0,
            ]),
        ];
    }

    /**
     * Get allocation value based on type.
     */
    private function getAllocationValueForType(BucketAllocationTypeEnum $type): ?int
    {
        return match ($type) {
            BucketAllocationTypeEnum::FIXED_LIMIT => $this->faker->numberBetween(10000, 1000000),
            BucketAllocationTypeEnum::PERCENTAGE => $this->faker->numberBetween(500, 5000),
            BucketAllocationTypeEnum::UNLIMITED => null,
        };
    }
}