<?php

namespace App\Modules\Lemmy;

use Illuminate\Support\Facades\Http;
use Illuminate\Http\Client\Response;

class LemmyRequest
{
    private string $host;
    private string $scheme;
    private ?string $token;

    public function __construct(string $instance, ?string $token = null)
    {
        // Handle both full URLs and just domain names
        [$this->scheme, $this->host] = $this->parseInstance($instance);
        $this->token = $token;
    }

    /**
     * Parse instance into scheme and host. Defaults to https when scheme missing.
     *
     * @return array{0:string,1:string} [scheme, host]
     */
    private function parseInstance(string $instance): array
    {
        $scheme = 'https';

        // If instance includes a scheme, honor it
        if (preg_match('/^(https?):\/\//i', $instance, $m)) {
            $scheme = strtolower($m[1]);
        }

        // Remove protocol if present
        $host = preg_replace('/^https?:\/\//i', '', $instance);
        // Remove trailing slash if present
        $host = rtrim($host ?? '', '/');

        return [$scheme, $host];
    }

    /**
     * @param array<string, mixed> $params
     */
    public function get(string $endpoint, array $params = []): Response
    {
        $url = sprintf('%s://%s/api/v3/%s', $this->scheme, $this->host, ltrim($endpoint, '/'));

        $request = Http::timeout(30);

        if ($this->token) {
            $request = $request->withToken($this->token);
        }

        return $request->get($url, $params);
    }

    /**
     * @param array<string, mixed> $data
     */
    public function post(string $endpoint, array $data = []): Response
    {
        $url = sprintf('%s://%s/api/v3/%s', $this->scheme, $this->host, ltrim($endpoint, '/'));

        $request = Http::timeout(30);

        if ($this->token) {
            $request = $request->withToken($this->token);
        }

        return $request->post($url, $data);
    }

    public function withToken(string $token): self
    {
        $this->token = $token;
        return $this;
    }

    /**
     * Return a cloned request with a different scheme (http or https)
     */
    public function withScheme(string $scheme): self
    {
        $clone = clone $this;
        $clone->scheme = strtolower($scheme) === 'http' ? 'http' : 'https';
        return $clone;
    }
}