Step by Step Guide to Building a Pocket API Integration in Go

Introduction

Hey there, fellow Go enthusiast! Ready to supercharge your reading list management? Let's dive into integrating the Pocket API using the awesome go-pocket-sdk package. Whether you're building a personal project or adding some cool features to your app, this guide will get you up and running in no time.

Prerequisites

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

• Go installed (I know, obvious, right?)
• A Pocket API consumer key (grab one from the Pocket Developer Portal)
• The go-pocket-sdk package (run go get github.com/motemen/go-pocket)

Got all that? Great! Let's get coding.

Setting up the project

First things first, let's create a new Go project:

mkdir pocket-integration
cd pocket-integration
go mod init pocket-integration

Now, let's import the necessary packages in our main.go file:

package main

import (
    "fmt"
    "log"

    "github.com/motemen/go-pocket"
)

func main() {
    // We'll add our code here soon!
}

Authentication

Alright, time for the fun part - authentication! We'll need to get a request token, generate an authorization URL, and then exchange that for an access token.

func main() {
    consumerKey := "your-consumer-key"
    client := pocket.NewClient(consumerKey, "")

    requestToken, err := client.ObtainRequestToken()
    if err != nil {
        log.Fatal(err)
    }

    authorizationURL := client.AuthorizationURL(requestToken, "http://localhost:8080")
    fmt.Printf("Please visit: %s\n", authorizationURL)
    fmt.Println("Press enter when you've authorized the app")
    fmt.Scanln()

    accessToken, err := client.ObtainAccessToken(requestToken)
    if err != nil {
        log.Fatal(err)
    }

    fmt.Printf("Access token: %s\n", accessToken)
}

Run this, follow the authorization URL, and boom! You've got your access token.

Basic API Operations

Now that we're authenticated, let's do some cool stuff with Pocket.

Adding items

err = client.Add(&pocket.AddInput{
    URL: "https://golang.org",
})
if err != nil {
    log.Fatal(err)
}
fmt.Println("Item added successfully!")

Retrieving items

items, err := client.Retrieve(&pocket.RetrieveOption{
    Count: 10,
    State: pocket.StateUnread,
})
if err != nil {
    log.Fatal(err)
}
for _, item := range items.List {
    fmt.Printf("Title: %s, URL: %s\n", item.Title, item.URL)
}

Modifying items

_, err = client.Modify(&pocket.ModifyInput{
    Actions: []pocket.Action{
        {
            Action: pocket.ActionArchive,
            ItemID: "12345",
        },
    },
})
if err != nil {
    log.Fatal(err)
}
fmt.Println("Item archived successfully!")

Advanced Usage

Want to level up? Let's look at some advanced features.

Searching and filtering

items, err := client.Retrieve(&pocket.RetrieveOption{
    Search: "golang",
    Sort:   pocket.SortNewest,
})

Handling pagination

offset := 0
for {
    items, err := client.Retrieve(&pocket.RetrieveOption{
        Count:  10,
        Offset: offset,
    })
    if err != nil {
        log.Fatal(err)
    }
    if len(items.List) == 0 {
        break
    }
    // Process items
    offset += len(items.List)
}

Best Practices

Remember to be a good API citizen:

• Respect rate limits (Pocket allows 320 calls per hour)
• Keep your API credentials secure (use environment variables!)

Testing

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

func TestAddItem(t *testing.T) {
    server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        w.WriteHeader(http.StatusOK)
        w.Write([]byte(`{"status":1}`))
    }))
    defer server.Close()

    client := pocket.NewClient("test-key", "test-token")
    client.BaseURL = server.URL

    err := client.Add(&pocket.AddInput{URL: "https://example.com"})
    if err != nil {
        t.Errorf("Expected no error, got %v", err)
    }
}

Conclusion

And there you have it! You're now a Pocket API integration pro. Remember, this is just scratching the surface - there's so much more you can do with the Pocket API and go-pocket-sdk. Keep exploring, keep coding, and most importantly, keep having fun with Go!

Want to see a complete working example? Check out this sample project on GitHub (Note: This is a placeholder link. Replace with your actual project link if you create one).

Happy coding, Gophers!