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

Aug 16, 2024 • 5 minute read

Introduction

Hey there, fellow Go enthusiast! Ready to dive into the world of Proposify API integration? You're in for a treat. We'll be building a robust integration that'll have you managing proposals like a pro. Let's get cracking!

Prerequisites

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

Go installed (I know, obvious, right?)
Proposify API credentials (grab 'em from your account)
Your favorite code editor

Setting up the project

First things first, let's set up our project:

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

Authentication

Alright, time to get cozy with the Proposify API. We'll use API key authentication:

package main

import (
    "net/http"
)

const apiKey = "your-api-key-here"

func createClient() *http.Client {
    return &http.Client{
        Transport: &apiKeyTransport{apiKey: apiKey},
    }
}

type apiKeyTransport struct {
    apiKey string
}

func (t *apiKeyTransport) RoundTrip(req *http.Request) (*http.Response, error) {
    req.Header.Set("Authorization", "Bearer "+t.apiKey)
    return http.DefaultTransport.RoundTrip(req)
}

Basic API Operations

Now for the fun part - let's interact with the API!

GET: Fetching proposals

func getProposals(client *http.Client) {
    resp, err := client.Get("https://api.proposify.com/v1/proposals")
    if err != nil {
        log.Fatal(err)
    }
    defer resp.Body.Close()
    // Handle response...
}

POST: Creating a new proposal

func createProposal(client *http.Client, proposal []byte) {
    resp, err := client.Post("https://api.proposify.com/v1/proposals", "application/json", bytes.NewBuffer(proposal))
    if err != nil {
        log.Fatal(err)
    }
    defer resp.Body.Close()
    // Handle response...
}

Handling Responses

Don't forget to parse those JSON responses:

type Proposal struct {
    ID    string `json:"id"`
    Title string `json:"title"`
    // Add more fields as needed
}

func parseResponse(resp *http.Response) ([]Proposal, error) {
    var proposals []Proposal
    err := json.NewDecoder(resp.Body).Decode(&proposals)
    return proposals, err
}

Advanced Features

Want to level up? Let's tackle pagination:

func getPaginatedProposals(client *http.Client, page int) {
    url := fmt.Sprintf("https://api.proposify.com/v1/proposals?page=%d", page)
    // Make request and handle response...
}

Testing

Always test your code, folks! Here's a quick example:

func TestGetProposals(t *testing.T) {
    client := createClient()
    proposals, err := getProposals(client)
    assert.NoError(t, err)
    assert.NotEmpty(t, proposals)
}

Best Practices

Remember to:

Implement rate limiting to play nice with the API
Cache responses when appropriate
Use error retry mechanisms for resilience

Conclusion

And there you have it! You've just built a solid Proposify API integration in Go. Pretty cool, right? Remember, this is just the beginning. Keep exploring the API, and don't be afraid to push the boundaries of what you can do with it.

Resources

Now go forth and propose like a boss! Happy coding!