Step by Step Guide to Building an Any.do API Integration in Go

Introduction

Hey there, fellow Go enthusiast! Ready to supercharge your productivity with Any.do? Let's dive into building an awesome API integration that'll have you managing tasks like a pro. We'll cover everything from basic setup to some nifty advanced features, so buckle up!

Prerequisites

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

• Go installed (I know, obvious, right?)
• An Any.do account and API key (grab one if you haven't already)
• Your favorite code editor at the ready

Setting up the project

Let's kick things off by creating a new Go project:

mkdir anydo-integration
cd anydo-integration
go mod init github.com/yourusername/anydo-integration

Now, let's grab the packages we'll need:

go get github.com/go-resty/resty/v2

Authentication

First things first, let's get you authenticated. Head over to Any.do and snag your API key. Got it? Great! Now let's put it to use:

package main

import (
    "github.com/go-resty/resty/v2"
)

const (
    baseURL = "https://sm-prod2.any.do/api/v2"
    apiKey  = "your-api-key-here"
)

func main() {
    client := resty.New().
        SetBaseURL(baseURL).
        SetHeader("X-API-KEY", apiKey)

    // We'll use this client for all our requests
}

Basic API Requests

Now that we're all set up, let's start making some requests!

Fetching tasks

resp, err := client.R().
    SetResult([]Task{}).
    Get("/me/tasks")

if err != nil {
    log.Fatalf("Error fetching tasks: %v", err)
}

tasks := resp.Result().(*[]Task)
fmt.Printf("Got %d tasks\n", len(*tasks))

Creating a new task

newTask := Task{
    Title: "Learn Go",
    DueDate: time.Now().Add(24 * time.Hour),
}

resp, err := client.R().
    SetBody(newTask).
    SetResult(&Task{}).
    Post("/me/tasks")

if err != nil {
    log.Fatalf("Error creating task: %v", err)
}

createdTask := resp.Result().(*Task)
fmt.Printf("Created task: %s\n", createdTask.Title)

Updating a task

taskID := "your-task-id"
updateTask := map[string]interface{}{
    "title": "Master Go",
}

resp, err := client.R().
    SetBody(updateTask).
    SetResult(&Task{}).
    Put("/me/tasks/" + taskID)

if err != nil {
    log.Fatalf("Error updating task: %v", err)
}

updatedTask := resp.Result().(*Task)
fmt.Printf("Updated task: %s\n", updatedTask.Title)

Removing a task

taskID := "your-task-id"

resp, err := client.R().
    Delete("/me/tasks/" + taskID)

if err != nil {
    log.Fatalf("Error deleting task: %v", err)
}

fmt.Println("Task deleted successfully")

Handling API Responses

The resty library makes handling responses a breeze. We've been using SetResult() to automatically parse JSON responses into structs. For error handling:

resp, err := client.R().
    SetResult(&Task{}).
    Get("/me/tasks/non-existent-id")

if err != nil {
    log.Fatalf("Request failed: %v", err)
}

if resp.IsError() {
    log.Fatalf("API error: %s", resp.String())
}

Advanced Features

Working with lists

resp, err := client.R().
    SetResult([]List{}).
    Get("/me/lists")

if err != nil {
    log.Fatalf("Error fetching lists: %v", err)
}

lists := resp.Result().(*[]List)
fmt.Printf("Got %d lists\n", len(*lists))

Managing tags

resp, err := client.R().
    SetResult([]Tag{}).
    Get("/me/tags")

if err != nil {
    log.Fatalf("Error fetching tags: %v", err)
}

tags := resp.Result().(*[]Tag)
fmt.Printf("Got %d tags\n", len(*tags))

Best Practices

1. Rate limiting: Be nice to the API. Implement exponential backoff for retries.
2. Error retries: Don't give up on the first failure. Retry with increasing delays.
3. Logging: Keep track of what's happening. It'll save you headaches later.

Here's a quick example of exponential backoff:

func exponentialBackoff(operation func() error) error {
    backoff := 100 * time.Millisecond
    for i := 0; i < 5; i++ {
        err := operation()
        if err == nil {
            return nil
        }
        time.Sleep(backoff)
        backoff *= 2
    }
    return fmt.Errorf("operation failed after 5 attempts")
}

Testing

Don't forget to test your integration! Here's a quick example using the httptest package:

func TestFetchTasks(t *testing.T) {
    server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        w.WriteHeader(http.StatusOK)
        w.Write([]byte(`[{"id": "123", "title": "Test Task"}]`))
    }))
    defer server.Close()

    client := resty.New().SetBaseURL(server.URL)
    resp, err := client.R().SetResult([]Task{}).Get("/me/tasks")

    assert.NoError(t, err)
    assert.Equal(t, http.StatusOK, resp.StatusCode())

    tasks := resp.Result().(*[]Task)
    assert.Len(t, *tasks, 1)
    assert.Equal(t, "Test Task", (*tasks)[0].Title)
}

Conclusion

And there you have it! You've just built a rock-solid Any.do API integration in Go. From basic CRUD operations to advanced features and best practices, you're now equipped to take your task management to the next level.

Remember, this is just the beginning. Feel free to explore more of the Any.do API and extend this integration to fit your specific needs. Happy coding, and may your tasks always be organized!

Resources

• Any.do API Documentation
• Go Resty GitHub
• Go Testing Package

Now go forth and conquer those tasks with your shiny new Go integration!