<?php

namespace Alexr\Services\Whatsapp;

class WhatsappApiResponse
{
	/**
	 * Whether the request was successful
	 */
	public bool $success;

	/**
	 * HTTP status code
	 */
	public int $statusCode;

	/**
	 * Response data
	 */
	public array $data;

	/**
	 * Error code if any
	 */
	public ?string $error;

	/**
	 * Human-readable message
	 */
	public ?string $message;

	/**
	 * Raw response data
	 */
	public array $raw;

	/**
	 * Constructor
	 */
	public function __construct(
		bool $success = false,
		int $statusCode = 0,
		array $data = [],
		?string $error = null,
		?string $message = null,
		array $raw = []
	) {
		$this->success = $success;
		$this->statusCode = $statusCode;
		$this->data = $data;
		$this->error = $error;
		$this->message = $message;
		$this->raw = $raw;
	}

	/**
	 * Check if the request was successful
	 */
	public function isSuccess(): bool
	{
		return $this->success;
	}

	/**
	 * Check if the request failed
	 */
	public function isFailed(): bool
	{
		return !$this->success;
	}

	/**
	 * Get data value by key
	 *
	 * @param string $key
	 * @param mixed $default
	 * @return mixed
	 */
	public function get(string $key, $default = null)
	{
		return $this->data[$key] ?? $default;
	}

	/**
	 * Get the message UUID (for sendMessage response)
	 */
	public function getMessageUuid(): ?string
	{
		return $this->data['message_uuid'] ?? null;
	}

	/**
	 * Get credits consumed (for sendMessage response)
	 */
	public function getCreditsConsumed(): ?int
	{
		return isset($this->data['credits_consumed'])
			? (int) $this->data['credits_consumed']
			: null;
	}

	/**
	 * Get credits remaining
	 */
	public function getCreditsRemaining(): ?int
	{
		return isset($this->data['credits_remaining'])
			? (int) $this->data['credits_remaining']
			: null;
	}

	/**
	 * Get available credits (for getCredits response)
	 */
	public function getCreditsAvailable(): ?int
	{
		return isset($this->data['credits_available'])
			? (int) $this->data['credits_available']
			: null;
	}

	/**
	 * Get message status (for getMessageStatus response)
	 */
	public function getStatus(): ?string
	{
		return $this->data['status'] ?? null;
	}

	/**
	 * Get templates list (for getTemplates response)
	 */
	public function getTemplates(): array
	{
		// When using getTemplates(), the data IS the templates array
		return $this->data;
	}

	/**
	 * Check if message has response (for getMessageStatus response)
	 */
	public function hasResponse(): bool
	{
		return $this->data['has_response'] ?? false;
	}

	/**
	 * Get error message
	 */
	public function getErrorMessage(): ?string
	{
		return $this->message ?? $this->error;
	}

	/**
	 * Check if error is due to insufficient credits
	 */
	public function isInsufficientCredits(): bool
	{
		return $this->error === 'insufficient_credits' || $this->statusCode === 402;
	}

	/**
	 * Check if error is due to invalid token
	 */
	public function isUnauthorized(): bool
	{
		return $this->error === 'unauthorized' || $this->statusCode === 401;
	}

	/**
	 * Check if template was not found
	 */
	public function isTemplateNotFound(): bool
	{
		return $this->error === 'template_not_found' || $this->statusCode === 404;
	}

	/**
	 * Check if template is not usable
	 */
	public function isTemplateNotUsable(): bool
	{
		return $this->error === 'template_not_usable';
	}

	/**
	 * Convert to array
	 */
	public function toArray(): array
	{
		return [
			'success' => $this->success,
			'status_code' => $this->statusCode,
			'data' => $this->data,
			'error' => $this->error,
			'message' => $this->message,
		];
	}

	/**
	 * Convert to JSON
	 */
	public function toJson(): string
	{
		return json_encode($this->toArray());
	}

	/**
	 * Create a failed response
	 *
	 * @param string $error
	 * @param string $message
	 * @param int $statusCode
	 * @return static
	 */
	public static function error(string $error, string $message, int $statusCode = 0): static
	{
		return new static(
			success: false,
			statusCode: $statusCode,
			data: [],
			error: $error,
			message: $message,
			raw: []
		);
	}

	/**
	 * Create a successful response
	 *
	 * @param array $data
	 * @param int $statusCode
	 * @return static
	 */
	public static function success(array $data = [], int $statusCode = 200): static
	{
		return new static(
			success: true,
			statusCode: $statusCode,
			data: $data,
			error: null,
			message: null,
			raw: $data
		);
	}
}