各言語のクライアントコード

import time, requests

class UnlockAPI:
    def __init__(self, key, base="https://unlock-api.com"):
        self.key, self.base = key, base

    def _post(self, method, **body):
        r = requests.post(f"{self.base}/{method}", json={"clientKey": self.key, **body}, timeout=30).json()
        if r.get("errorId"):
            raise RuntimeError(r.get("errorCode"))  # failed tasks are refunded
        return r

    def balance(self):
        return self._post("getBalance")["balance"]

    def solve(self, task, timeout=300):
        task_id = self._post("createTask", task=task)["taskId"]
        end = time.time() + timeout
        while time.time() < end:
            time.sleep(5)
            r = self._post("getTaskResult", taskId=task_id)
            if r["status"] == "ready":
                return r["solution"]
        raise TimeoutError(task_id)

export class UnlockAPI {
  constructor(key, base = "https://unlock-api.com") { this.key = key; this.base = base; }

  async post(method, body = {}) {
    const r = await fetch(`${this.base}/${method}`, { method: "POST", headers: { "content-type": "application/json" }, body: JSON.stringify({ clientKey: this.key, ...body }) }).then((x) => x.json());
    if (r.errorId) throw new Error(r.errorCode); // failed tasks are refunded
    return r;
  }

  async balance() { return (await this.post("getBalance")).balance; }

  async solve(task, timeoutMs = 300_000) {
    const { taskId } = await this.post("createTask", { task });
    const end = Date.now() + timeoutMs;
    while (Date.now() < end) {
      await new Promise((r) => setTimeout(r, 5000));
      const r = await this.post("getTaskResult", { taskId });
      if (r.status === "ready") return r.solution;
    }
    throw new Error("timeout " + taskId);
  }
}

<?php
class UnlockAPI {
  public function __construct(private string $key, private string $base = "https://unlock-api.com") {}

  private function post(string $method, array $body = []): array {
    $c = curl_init("$this->base/$method");
    curl_setopt_array($c, [CURLOPT_POST => true, CURLOPT_RETURNTRANSFER => true, CURLOPT_TIMEOUT => 30,
      CURLOPT_HTTPHEADER => ["Content-Type: application/json"],
      CURLOPT_POSTFIELDS => json_encode(["clientKey" => $this->key] + $body)]);
    $r = json_decode(curl_exec($c), true);
    if (!empty($r["errorId"])) throw new RuntimeException($r["errorCode"]); // failed tasks are refunded
    return $r;
  }

  public function balance(): float { return $this->post("getBalance")["balance"]; }

  public function solve(array $task, int $timeout = 300): array {
    $id = $this->post("createTask", ["task" => $task])["taskId"];
    for ($end = time() + $timeout; time() < $end;) {
      sleep(5);
      $r = $this->post("getTaskResult", ["taskId" => $id]);
      if ($r["status"] === "ready") return $r["solution"];
    }
    throw new RuntimeException("timeout $id");
  }
}

package unlockapi

import (
	"bytes"
	"encoding/json"
	"errors"
	"net/http"
	"time"
)

type Client struct{ Key, Base string }

func New(key string) *Client { return &Client{Key: key, Base: "https://unlock-api.com"} }

func (c *Client) post(method string, body map[string]any) (map[string]any, error) {
	body["clientKey"] = c.Key
	b, _ := json.Marshal(body)
	res, err := http.Post(c.Base+"/"+method, "application/json", bytes.NewReader(b))
	if err != nil {
		return nil, err
	}
	defer res.Body.Close()
	var r map[string]any
	if err := json.NewDecoder(res.Body).Decode(&r); err != nil {
		return nil, err
	}
	if id, _ := r["errorId"].(float64); id != 0 {
		return nil, errors.New(r["errorCode"].(string)) // failed tasks are refunded
	}
	return r, nil
}

func (c *Client) Solve(task map[string]any, timeout time.Duration) (map[string]any, error) {
	r, err := c.post("createTask", map[string]any{"task": task})
	if err != nil {
		return nil, err
	}
	id := r["taskId"]
	for end := time.Now().Add(timeout); time.Now().Before(end); {
		time.Sleep(5 * time.Second)
		r, err := c.post("getTaskResult", map[string]any{"taskId": id})
		if err != nil {
			return nil, err
		}
		if r["status"] == "ready" {
			return r["solution"].(map[string]any), nil
		}
	}
	return nil, errors.New("timeout")
}

import java.net.URI;
import java.net.http.*;
import java.util.regex.*;

/** UNLOCK API client with only the Java standard library (Java 11+). Tasks and solutions are JSON text. */
public class UnlockAPI {
  private final String key, base;
  private final HttpClient http = HttpClient.newHttpClient();

  public UnlockAPI(String key) { this.key = key; this.base = "https://unlock-api.com"; }

  /** POST {"clientKey": ..., fields} and return the reply. errorId 1 throws (failed tasks are refunded). */
  private String post(String method, String fields) throws Exception {
    String body = "{\"clientKey\":\"" + key + "\"" + (fields.isEmpty() ? "" : "," + fields) + "}";
    var req = HttpRequest.newBuilder(URI.create(base + "/" + method))
        .header("Content-Type", "application/json").POST(HttpRequest.BodyPublishers.ofString(body)).build();
    String r = http.send(req, HttpResponse.BodyHandlers.ofString()).body();
    if (!"0".equals(field(r, "errorId"))) throw new RuntimeException(field(r, "errorCode"));
    return r;
  }

  /** Value of a string or number field, or null */
  public static String field(String json, String name) {
    Matcher m = Pattern.compile("\"" + Pattern.quote(name) + "\"\\s*:\\s*(?:\"((?:[^\"\\\\]|\\\\.)*)\"|(-?[0-9.]+))").matcher(json);
    return m.find() ? (m.group(1) != null ? m.group(1) : m.group(2)) : null;
  }

  /** An object field as JSON text, or null */
  public static String object(String json, String name) {
    int i = json.indexOf("\"" + name + "\"");
    if (i < 0 || (i = json.indexOf('{', i)) < 0) return null;
    boolean inString = false;
    for (int j = i, depth = 0; j < json.length(); j++) {
      char c = json.charAt(j);
      if (inString) { if (c == '\\') j++; else if (c == '"') inString = false; }
      else if (c == '"') inString = true;
      else if (c == '{') depth++;
      else if (c == '}' && --depth == 0) return json.substring(i, j + 1);
    }
    return null;
  }

  public double balance() throws Exception {
    return Double.parseDouble(field(post("getBalance", ""), "balance"));
  }

  /** task: the task object as JSON text. Returns the solution object as JSON text. */
  public String solve(String task) throws Exception {
    String id = field(post("createTask", "\"task\":" + task), "taskId");
    for (long end = System.currentTimeMillis() + 300_000; System.currentTimeMillis() < end;) {
      Thread.sleep(5000);
      String r = post("getTaskResult", "\"taskId\":" + id);
      if ("ready".equals(field(r, "status"))) return object(r, "solution");
    }
    throw new RuntimeException("timeout " + id);
  }
}

using System.Net.Http.Json;
using System.Text.Json.Nodes;

public class UnlockApi(string key, string baseUrl = "https://unlock-api.com")
{
    private readonly HttpClient http = new();

    private async Task<JsonNode> Post(string method, JsonObject body)
    {
        body["clientKey"] = key;
        var res = await http.PostAsJsonAsync($"{baseUrl}/{method}", body);
        var r = JsonNode.Parse(await res.Content.ReadAsStringAsync())!;
        if ((int?)r["errorId"] != 0) throw new Exception((string?)r["errorCode"]); // failed tasks are refunded
        return r;
    }

    public async Task<JsonNode> Solve(JsonObject task)
    {
        var id = (long)(await Post("createTask", new JsonObject { ["task"] = task }))["taskId"]!;
        var end = DateTime.UtcNow.AddMinutes(5);
        while (DateTime.UtcNow < end)
        {
            await Task.Delay(5000);
            var r = await Post("getTaskResult", new JsonObject { ["taskId"] = id });
            if ((string?)r["status"] == "ready") return r["solution"]!;
        }
        throw new TimeoutException(id.ToString());
    }
}