Step by Step Guide to Building a Todoist API Integration in Java

Introduction

Hey there, fellow developer! Ready to supercharge your productivity with Todoist? Let's dive into building a Java integration that'll have you managing tasks like a pro. The Todoist API is a powerful tool, and we're about to harness its potential. Buckle up!

Prerequisites

Before we jump in, make sure you've got:

• A Java development environment (I know you've got this covered!)
• A Todoist account and API token (grab one from your Todoist settings)

Setting up the project

Let's get the boring stuff out of the way:

1. Create a new Java project in your favorite IDE.
2. Add an HTTP client library. I'm partial to OkHttp, but use whatever floats your boat.

<dependency>
    <groupId>com.squareup.okhttp3</groupId>
    <artifactId>okhttp</artifactId>
    <version>4.10.0</version>
</dependency>

Authentication

Todoist uses token-based auth. It's simple:

String apiToken = "your_api_token_here";

Keep this safe and out of version control. You know the drill!

Making API requests

Here's the basic structure for making requests:

OkHttpClient client = new OkHttpClient();

Request request = new Request.Builder()
    .url("https://api.todoist.com/rest/v2/tasks")
    .addHeader("Authorization", "Bearer " + apiToken)
    .build();

try (Response response = client.newCall(request).execute()) {
    if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);
    System.out.println(response.body().string());
}

Core functionalities

Fetching tasks

Request request = new Request.Builder()
    .url("https://api.todoist.com/rest/v2/tasks")
    .addHeader("Authorization", "Bearer " + apiToken)
    .build();

Creating new tasks

RequestBody body = RequestBody.create(
    MediaType.parse("application/json"),
    "{\"content\": \"Buy milk\", \"due_string\": \"tomorrow at 12:00\", \"priority\": 4}"
);

Request request = new Request.Builder()
    .url("https://api.todoist.com/rest/v2/tasks")
    .addHeader("Authorization", "Bearer " + apiToken)
    .post(body)
    .build();

Updating existing tasks

RequestBody body = RequestBody.create(
    MediaType.parse("application/json"),
    "{\"content\": \"Buy almond milk instead\"}"
);

Request request = new Request.Builder()
    .url("https://api.todoist.com/rest/v2/tasks/task_id")
    .addHeader("Authorization", "Bearer " + apiToken)
    .post(body)
    .build();

Deleting tasks

Request request = new Request.Builder()
    .url("https://api.todoist.com/rest/v2/tasks/task_id")
    .addHeader("Authorization", "Bearer " + apiToken)
    .delete()
    .build();

Advanced features

Want to level up? Try these:

• Working with projects: /rest/v2/projects
• Managing labels: /rest/v2/labels
• Handling due dates and reminders: Use due_string or due_date in task creation/updates

Best practices

• Respect rate limits (450 requests per minute per user)
• Handle errors gracefully
• Log important events and errors

Testing the integration

Don't forget to test! Write unit tests for your methods and integration tests to ensure everything plays nice with the API.

Conclusion

And there you have it! You're now equipped to build a robust Todoist integration in Java. Remember, this is just the beginning. Play around, experiment, and see what awesome features you can add to your integration.

Resources

• Official Todoist API documentation
• Sample code repository

Now go forth and conquer those tasks! Happy coding!