<?php

namespace App\Services\InsForge;

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

class InsForgeClient
{
    public function __construct(
        private readonly string $baseUrl,
        private readonly string $apiKey,
        private readonly int $timeout = 30,
        private readonly ?string $accessToken = null,
    ) {
    }

    public function withToken(?string $accessToken): self
    {
        return new self($this->baseUrl, $this->apiKey, $this->timeout, $accessToken);
    }

    public function accessToken(): ?string
    {
        return $this->accessToken;
    }

    public function login(string $email, string $password): array
    {
        return $this->request('POST', '/api/auth/sessions', ['email' => $email, 'password' => $password])->json();
    }

    public function logout(): array
    {
        return $this->request('POST', '/api/auth/logout')->json();
    }

    public function currentUser(): array
    {
        return $this->request('GET', '/api/auth/profiles/current')->json();
    }

    public function listRecords(string $table, array $params = []): array
    {
        return $this->request('GET', "/api/database/records/{$table}", query: $params)->json() ?? [];
    }

    public function getRecord(string $table, string $id, array $params = []): ?array
    {
        $params['id'] = 'eq.' . $id;
        $params['limit'] = 1;

        return $this->listRecords($table, $params)[0] ?? null;
    }

    public function insertRecord(string $table, array $data, bool $asUser = true): array
    {
        return $this->request('POST', "/api/database/records/{$table}", $data, asUser: $asUser)->json();
    }

    public function updateRecords(string $table, array $filters, array $data, bool $asUser = true): array
    {
        $query = $this->buildFilters($filters);

        return $this->request('PATCH', "/api/database/records/{$table}", $data, query: $query, asUser: $asUser)->json();
    }

    public function deleteRecords(string $table, array $filters, bool $asUser = true): array
    {
        return $this->request('DELETE', "/api/database/records/{$table}", query: $this->buildFilters($filters), asUser: $asUser)->json();
    }

    public function countRecords(string $table, array $filters = []): int
    {
        $query = $this->buildFilters($filters);
        $response = $this->request('HEAD', "/api/database/records/{$table}", query: array_merge($query, ['limit' => 1]));

        return (int) ($response->header('Content-Range') ? explode('/', explode('-', $response->header('Content-Range'))[1])[0] : 0);
    }

    public function rpc(string $function, array $args = [], bool $asUser = true): mixed
    {
        return $this->request('POST', "/api/database/rpc/{$function}", $args, asUser: $asUser)->json();
    }

    public function createUserAsAdmin(array $payload): array
    {
        return $this->request('POST', '/api/auth/users', $payload)->json();
    }

    public function updateUserAsAdmin(string $userId, array $payload): array
    {
        return $this->request('PATCH', "/api/auth/users/{$userId}", $payload)->json();
    }

    private function buildFilters(array $filters): array
    {
        $query = [];

        foreach ($filters as $column => $value) {
            $query[$column] = str_starts_with((string) $value, 'eq.') ? $value : 'eq.' . $value;
        }

        return $query;
    }

    private function request(string $method, string $path, array $body = null, array $query = [], bool $asUser = false): Response
    {
        if ($asUser && $this->accessToken === null) {
            throw new InsForgeException(null, 401, 'No user access token available for this request.');
        }

        try {
            $http = Http::baseUrl(rtrim($this->baseUrl, '/'))
                ->timeout($this->timeout)
                ->withToken($asUser ? $this->accessToken : $this->apiKey);

            $verb = strtolower($method);

            $response = in_array($verb, ['get', 'head'])
                ? $http->{$verb}($path, $query)
                : $http->{$verb}($path, $body ?? []);

            throw_unless($response->successful(), fn () => InsForgeException::fromResponse(
                $response->status(),
                $response->json() ?? $response->body(),
            ));

            return $response;
        } catch (ConnectionException $e) {
            throw new InsForgeException(null, 0, 'InsForge connection failed: ' . $e->getMessage());
        }
    }
}