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https://github.com/hbagdi/go-unsplash

Go Client for the Unsplash API
https://github.com/hbagdi/go-unsplash

api-client curated-photos free-photos go go-packages golang golang-bindings golang-library photography photos search-photos unsplash unsplash-api

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Go Client for the Unsplash API

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README 

        
# Unsplash API client



[![GoDoc](https://godoc.org/github.com/hardikbagdi/go-unsplash?status.svg)](https://godoc.org/github.com/hbagdi/go-unsplash/unsplash)

[![CI Test](https://github.com/hbagdi/go-unsplash/actions/workflows/test.yaml/badge.svg)](https://github.com/hbagdi/go-unsplash/actions/workflows/test.yaml)

[![Go Report Card](https://goreportcard.com/badge/github.com/hbagdi/go-unsplash)](https://goreportcard.com/report/github.com/hbagdi/go-unsplash)



A wrapper for the [Unsplash API](https://unsplash.com/developers).



[Unsplash](https://unsplash.com) provides [freely licensed](https://unsplash.com/license) high-resolution photos that can be used for anything.



## Documentation



- [Installation](#installation)

- [Dependencies](#dependencies)

- [API terms and guidelines](#api-guidelines)

- [Registering your App](#registration)

- [Contact for help](#help)

- [Usage](#usage)

- [License](#license)



## Installation



```go

go get github.com/hbagdi/go-unsplash/unsplash

```



## Dependencies



This library has a single dependency on Google's [go-querystring](https://github.com/google/go-querystring).



## API Guidelines



When using the Unsplash API, you need to make sure to abide by their [API guidelines](https://medium.com/unsplash/unsplash-api-guidelines-28e0216e6daa) and [API Terms](https://unsplash.com/api-terms).



## Registration



[Sign up](https://unsplash.com/join) on Unsplash.com and register as a [developer](https://unsplash.com/developers).


You can then [create a new application](https://unsplash.com/oauth/applications/new) and use the AppID and Secret for authentication.



## Help



Please open an issue in this repository if you need help or want to report a bug.


Mail at the e-mail address in the license if needed.



## Usage



- [Importing](#importing)

- [Authentication](#authentication)

- [Creating an instance](#creating-an-instance)

- [Error handling](#error-handling)

- [Response struct](#response-struct)

- [Pagination](#pagination) - paging through results

- [unsplash.Photos](#photos)



  - [Random](#random) - get random photo(s)

  - [All](#all-photos) - get all photos on unplash.com

  - [Curated](#curated-photos) - returns a list of curated photos

  - [Photo](#photo) -get details of a single photo

  - [Like](#like) - like a photo on the authenticated users' behalf

  - [Unlike](#unlike) - unlike a photo on the authenticated users' behalf

  - [Download link](#download-link) - get download link of a photo

  - [Stats](#stats) - statistics of a photo



- [unsplash.Collections](#collections)



  - [All](#all-collections) - return all collections on unsplash.com

  - [Collection](#collection) - get details about a single existing collection

  - [Curated](#curated-collections) - get a list of curated collections

  - [Featured](#featured-collections) - get a list of featured collections

  - [Related](#related-collections) - get a list of related collections of a particular collection

  - [Create](#create-collection) - create a collection for the authenticated user

  - [Delete](#delete-collection) - delete a collection

  - [Update](#update-collection) - update a collection's description

  - [Add Photo](#add-photo) - add a photo to a collection

  - [Remove Photo](#remove-photo) - remove a photo from a collection



- [unsplash.Users](#users)



  - [User](#user) - get details about a single user

  - [Portfolio](#portfolio) - get link to a user's portfolio

  - [Liked Photos](#liked-photos) - get list of photos a user has liked

  - [Photos](#user-photos) - get list of photos a user has uploaded to unsplash.com

  - [Collections](#user-collections) - collections of a user



- [unsplash.Search](#search)



  - [Photos](#search-photos) - search photos

  - [Collections](#search-collections) - search collections

  - [Users](#search-users) - search users



### Importing



Once you've installed the library using [`go get`](#installation), import it to your go project:



```go

import "github.com/hbagdi/go-unsplash/unsplash"

```



### Authentication



Authentication is not handled by directly by go-unsplash.


Instead, pass an [`http.Client`](https://godoc.org/net/http#Client) that can handle authentication for you.


You can use libraries such as [oauth2](https://godoc.org/golang.org/x/oauth2).


Please note that all calls will include the OAuth token and hence, [`http.Client`](https://godoc.org/net/http#Client) should not be shared between users.



Note that if you're just using actions that require the public permission scope, only the AppID is required.



### Creating an instance



An instance of unsplash can be created using `New()`.


The http.Client supplied will be used to make requests to the API.



```go

ts := oauth2.StaticTokenSource(

  // note Client-ID in front of the access token

  &oauth2.Token{AccessToken: "Client-ID Your-access-token"},

)

client := oauth2.NewClient(oauth2.NoContext, ts)

//use the http.Client to instantiate unsplash

unsplash := unsplash.New(client)  

// requests can be now made to the API

randomPhoto, _ , err := unsplash.RandomPhoto(nil)

```



### Error handling



All API calls return an `error` as second or third return object. All successful calls will return nil in place of this return. Further, go-unsplash has errors defined as types for better error handling.



```go

randomPhoto, _ , err := unsplash.RandomPhoto(nil)

if err != nil {

  //handle error

}

```



### Response struct



Most API methods return a [`*Response`](https://godoc.org/github.com/hbagdi/go-unsplash/unsplash#Response) along-with the result of the call.


This struct contains paging and rate-limit information.



### Pagination



Pagination is currently supported by supplying a page number in the [`ListOpt`](https://godoc.org/github.com/hbagdi/go-unsplash/unsplash#ListOpt). The `NextPage` field in Response can be used to get the next page number.



```go

searchOpt := &SearchOpt{Query : "Batman"}

photos, resp, err := unsplash.Search.Photos(searchOpt)



if err != nil {

  return

}

// process photos

for _,photo := range *photos {

  fmt.Println(*photo.ID)

}

// get next

if !resp.HasNextPage {

  return

}

searchOpt.Page = resp.NextPage

photos, resp ,err = unsplash.Search.Photos(searchOpt)

//photos now has next page of the search result

```



### Photos



Unsplash.Photos is of type PhotosService.


It provides various methods for querying the /photos endpoint of the API.



#### Random



You can get a single random photo or multiple depending upon opt. If opt is nil, then a single random photo is returned. Random photos satisfy all the parameters specified in `*RandomPhotoOpt`.



```go

photos, resp, err := unsplash.Photos.Random(nil)

assert.Nil(err)

assert.NotNil(photos)

assert.NotNil(resp)

assert.Equal(1, len(*photos))

var opt RandomPhotoOpt

opt.Count = 3

photos, resp, err = unsplash.Photos.Random(&opt)

assert.Nil(err)

assert.NotNil(photos)

assert.NotNil(resp)

assert.Equal(3, len(*photos))

```



#### All photos



Get all photos on unsplash.com.


Obviously, this is a huge list and hence can be paginated through.



```go

opt := new(unsplash.ListOpt)

opt.Page = 1

opt.PerPage = 10



if !opt.Valid() {

    fmt.Println("error with opt")

    return

}

count := 0

for {

    photos, resp, err := un.Photos.All(opt)



    if err != nil {

        fmt.Println("error")

        return

    }

    //process photos

    for _, c := range *photos {

        fmt.Printf("%d : %d\n", count, *c.ID)

        count += 1

    }

    //go for next page

    if !resp.HasNextPage {

        return

    }

    opt.Page = resp.NextPage

}

```



#### Curated Photos



Get all curated photos on unsplash.com.


Obviously, this is a huge list and hence can be paginated through.



```go

opt := new(unsplash.ListOpt)

opt.Page = 1

opt.PerPage = 10



if !opt.Valid() {

    fmt.Println("error with opt")

    return

}

count := 0

for {

    photos, resp, err := un.Photos.Curated(opt)



    if err != nil {

        fmt.Println("error")

        return

    }

    //process photos

    for _, c := range *photos {

        fmt.Printf("%d : %d\n", count, *c.ID)

        count += 1

    }

    //go for next page

    if !resp.HasNextPage {

        return

    }

    opt.Page = resp.NextPage

}

```



#### Photo



Get details of a specific photo.



```go

photo, resp, err := unsplash.Photos.Photo("9BoqXzEeQqM", nil)

assert.NotNil(photo)

assert.NotNil(resp)

assert.Nil(err)

fmt.Println(photo)

//photo is of type *Unsplash.Photo



// you can also specify a PhotoOpt to get a custom size or cropped photo

var opt PhotoOpt

opt.Height = 400

opt.Width = 600

photo, resp, err = unsplash.Photos.Photo("9BoqXzEeQqM", &opt)

assert.NotNil(photo)

assert.NotNil(resp)

assert.Nil(err)

log.Println(photo)

//photo.Urls.Custom will have the cropped photo

// See PhotoOpt for more details

```



#### Like



```go

//Like a random photo

photos, resp, err := unsplash.Photos.Random(nil)

assert.Nil(err)

assert.NotNil(photos)

assert.NotNil(resp)

assert.Equal(1, len(*photos))

photoid := (*photos)[0].ID

photo, resp, err := unsplash.Photos.Like(*photoid)

assert.Nil(err)

assert.NotNil(photo)

assert.NotNil(resp)

```



#### Unlike



Same way as Like except call `Unlike()`.



#### Download Link



Get download URL for a photo.



```go

url, resp, err := unsplash.Photos.DownloadLink("-HPhkZcJQNk")

assert.Nil(err)

assert.NotNil(url)

assert.NotNil(resp)

log.Println(url)

```



#### Stats



Statistics for a specific photo



```go

stats, resp, err := unsplash.Photos.Stats("-HPhkZcJQNk")

assert.Nil(err)

assert.NotNil(stats)

assert.NotNil(resp)

log.Println(stats)

```



### Collections



Various details about collection(s).



#### All collections



```go

collections, resp, err = unsplash.Collections.All(nil)

assert.Nil(err)

assert.NotNil(resp)

assert.NotNil(collections)

opt := new(ListOpt)

opt.Page = 2

opt.PerPage = 10

//get the second page

collections, resp, err = unsplash.Collections.All(opt)

assert.Nil(err)

assert.NotNil(resp)

assert.NotNil(collections)

```



#### Curated collections



```go

collections, resp, err := unsplash.Collections.Curated(nil)

assert.Nil(err)

assert.NotNil(resp)

assert.NotNil(collections)

```



#### Featured collections



Same as Curated, but use `Featured()` instead.



#### Related collections



Get collections related to a collection.



```go

collections, resp, err := unsplash.Collections.Related("296", nil)

assert.Nil(err)

assert.NotNil(resp)

assert.NotNil(collections)

//page through if necessary

```



#### Collection



Details about a specific collection



```go

collection, resp, err := unsplash.Collections.Collection("910")

assert.Nil(err)

assert.NotNil(resp)

assert.NotNil(collection)

```



#### Create collection



Create a collection on behalf of the authenticated user.



```go

var opt CollectionOpt

title := "Test42"

opt.Title = &title

collection, resp, err := unsplash.Collections.Create(&opt)

assert.Nil(err)

assert.NotNil(resp)

assert.NotNil(collection)

```



#### Delete collection



Let's delete the collection just created above.



```go

//get list of collections of a user

collections, resp, err := unsplash.Users.Collections("gopher", nil)

assert.Nil(err)

assert.NotNil(resp)

assert.NotNil(collections)

//take the first one

collection := (*collections)[0]

assert.NotNil(collection)

//delete it

resp, err = unsplash.Collections.Delete(*collection.ID)

assert.NotNil(resp)

assert.Nil(err)

```



#### Update collection



```go

//get a user's collection

collections, resp, err := unsplash.Users.Collections("gopher", nil)

assert.Nil(err)

assert.NotNil(resp)

assert.NotNil(collections)

// take the first one

collection := (*collections)[0]

assert.NotNil(collection)

log.Println(*collection.ID)

//random title

var opt CollectionOpt

title := "Test43" + strconv.Itoa(rand.Int())

opt.Title = &title

//update the title

col, resp, err := unsplash.Collections.Update(*collection.ID, &opt)

assert.Nil(err)

assert.NotNil(resp)

assert.NotNil(col)

```



#### Add photo



```go

photos, resp, err := unsplash.Photos.Random(nil)

photo := (*photos)[0]

//get a user's collection

collections, resp, err := unsplash.Users.Collections("gopher", nil)

assert.Nil(err)

collection := (*collections)[0]

//add the photo

resp, err = unsplash.Collections.AddPhoto(*collection.ID, *photo.ID)

assert.Nil(err)

```



#### Remove photo



```go

//remove a photo

_, _ = unsplash.Collections.RemovePhoto(*collection.ID, *photo.ID)

```



### Users



Details about an unsplash.com users.



#### User



Details about unsplash.com users.



```go

profileImageOpt := &ProfileImageOpt{Height: 120, Width: 400}

//or pass a nil as second arg

user, err := unsplash.Users.User("lukechesser", profileImageOpt)

assert.Nil(err)

assert.NotNil(user)



//OR, get the currently authenticated user

user, resp, err := unsplash.CurrentUser()

assert.Nil(user)

assert.Nil(resp)

assert.NotNil(err)

```



#### Portfolio



```go

url, err = unsplash.Users.Portfolio("gopher")

assert.Nil(err)

assert.NotNil(url)

assert.Equal(url.String(), "https://wikipedia.org/wiki/Gopher")

```



#### Liked Photos



```go

photos, resp, err := unsplash.Users.LikedPhotos("lukechesser", nil)

assert.Nil(err)

assert.NotNil(photos)

assert.NotNil(resp)

```



#### User photos



Get photos a users has uploaded on unsplash.com



```go

photos, resp, err := unsplash.Users.Photos("lukechesser", nil)

assert.Nil(err)

assert.NotNil(resp)

assert.NotNil(photos)

```



#### User collections



Get a list of collections created by the user.



```go

collections, resp, err := unsplash.Users.Collections("gopher", nil)

assert.Nil(err)

assert.NotNil(resp)

assert.NotNil(collections)

```



### Search



Search for photos, collections or users.



#### Search photos



```go

var opt SearchOpt

//an empty search will be erroneous

photos, resp, err := unsplash.Search.Photos(&opt)

assert.NotNil(err)

assert.Nil(resp)

assert.Nil(photos)

opt.Query = "Nature"

//Search for photos tageed "Nature"

photos, _, err = unsplash.Search.Photos(&opt)

log.Println(len(*photos.Results))

assert.NotNil(photos)

assert.Nil(err)

```



#### Search collections



```go

var opt SearchOpt

opt.Query = "Nature"

collections, _, err = unsplash.Search.Collections(&opt)

assert.NotNil(collections)

assert.Nil(err)

log.Println(len(*collections.Results))

```



#### Search users



```go

var opt SearchOpt

opt.Query = "Nature"

users, _, err = unsplash.Search.Users(&opt)

log.Println(len(*users.Results))

assert.NotNil(users)

assert.Nil(err)

```



## License



Copyright (c) 2017 Hardik Bagdi [[email protected]](mailto:[email protected])



MIT License



Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:



The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.



THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.