readme.Rmd

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output: github_document
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# spotifyr

[![CRAN_Status_Badge](http://www.r-pkg.org/badges/version/spotifyr?color=brightgreen)](https://cran.r-project.org/package=spotifyr)
![](http://cranlogs.r-pkg.org/badges/spotifyr?color=brightgreen)

```{r, echo = FALSE}
knitr::opts_chunk$set(
    collapse = TRUE,
    comment = "#>",
    fig.path = "man/figures/README-"
)
```

## Overview
spotifyr is an R wrapper for pulling track audio features and other information from Spotify's Web API in bulk. By automatically batching API requests, it allows you to enter an artist's name and retrieve their entire discography in seconds, along with Spotify's audio features and track/album popularity metrics. You can also pull song and playlist information for a given Spotify User (including yourself!).

## Installation
CRAN version 2.1.0 (recommended)
```r
install.packages('spotifyr')
```

Development version
```r
devtools::install_github('charlie86/spotifyr')
```

## Authentication
First, set up a Dev account with Spotify to access their Web API [here](https://developer.spotify.com/my-applications/#!/applications). This will give you your `Client ID` and `Client Secret`. Once you have those, you can pull your access token into R with `get_spotify_access_token()`. 

The easiest way to authenticate is to set your credentials to the System Environment variables `SPOTIFY_CLIENT_ID` and `SPOTIFY_CLIENT_SECRET`. The default arguments to `get_spotify_access_token()` (and all other functions in this package) will refer to those. Alternatively, you can set them manually and make sure to explicitly refer to your access token in each subsequent function call.

```{r, eval = FALSE}
Sys.setenv(SPOTIFY_CLIENT_ID = 'xxxxxxxxxxxxxxxxxxxxx')
Sys.setenv(SPOTIFY_CLIENT_SECRET = 'xxxxxxxxxxxxxxxxxxxxx')

access_token <- get_spotify_access_token()
```

#### Authorization code flow
For certain functions and applications, you'll need to log in as a Spotify user. To do this, your Spotify Developer application needs to have a callback url. You can set this to whatever you want that will work with your application, but a good default option is `http://localhost:1410/` (see image below). For more information on authorization, visit the offical [Spotify Developer Guide](https://developer.spotify.com/documentation/general/guides/authorization-guide/).


```{r, out.width = "50%", echo = FALSE}
knitr::include_graphics('man/figures/spotifyr_auth_screenshot.png')
```


## Usage
### What was The Beatles' favorite key?
```{r load_packages, message = FALSE, warning = FALSE, results = 'hide'}
library(spotifyr)
beatles <- get_artist_audio_features('the beatles')
```
```{r, message = FALSE, warning = FALSE}
library(tidyverse)
library(knitr)

beatles %>% 
    count(key_mode, sort = TRUE) %>% 
    head(5) %>% 
    kable()
```

### Get your most recently played tracks
```{r, message = FALSE}
library(lubridate)

get_my_recently_played(limit = 5) %>% 
    mutate(artist.name = map_chr(track.artists, function(x) x$name[1]),
           played_at = as_datetime(played_at)) %>% 
    select(track.name, artist.name, track.album.name, played_at) %>% 
    kable()
```


### Find your all time favorite artists
```{r}
get_my_top_artists_or_tracks(type = 'artists', time_range = 'long_term', limit = 5) %>% 
    select(name, genres) %>% 
    rowwise %>% 
    mutate(genres = paste(genres, collapse = ', ')) %>% 
    ungroup %>% 
    kable()
```

### Find your favorite tracks at the moment
```{r}
get_my_top_artists_or_tracks(type = 'tracks', time_range = 'short_term', limit = 5) %>% 
    mutate(artist.name = map_chr(artists, function(x) x$name[1])) %>% 
    select(name, artist.name, album.name) %>% 
    kable()
```

### What's the most joyful Joy Division song?
My favorite audio feature has to be "valence," a measure of musical positivity.
```{r, results = 'hide'}
joy <- get_artist_audio_features('joy division')
```
```{r}
joy %>% 
    arrange(-valence) %>% 
    select(track_name, valence) %>% 
    head(5) %>% 
    kable()
```

Now if only there was some way to plot joy...

### Joyplot of the emotional rollercoasters that are Joy Division's albums
```{r, message = FALSE}
library(ggjoy)

ggplot(joy, aes(x = valence, y = album_name)) + 
    geom_joy() + 
    theme_joy() +
    ggtitle("Joyplot of Joy Division's joy distributions", subtitle = "Based on valence pulled from Spotify's Web API with spotifyr")
```

## Sentify: A Shiny app
This [app](http://rcharlie.net/sentify/), powered by spotifyr, allows you to visualize the energy and valence (musical positivity) of all of Spotify's artists and playlists.

## Dope stuff other people have done with spotifyr
The coolest thing about making this package has definitely been seeing all the awesome stuff other people have done with it. Here are a few examples:

[Exploring the Spotify API with R: A tutorial for beginners, by a beginner](https://msmith7161.github.io/what-is-speechiness/), Mia Smith

[Sentiment analysis of musical taste: a cross-European comparison](http://paulelvers.com/post/emotionsineuropeanmusic/), Paul Elvers

[Blue Christmas: A data-driven search for the most depressing Christmas song](https://caitlinhudon.com/2017/12/22/blue-christmas/), Caitlin Hudon

[KendRick LamaR](https://davidklaing.com/blog/2017/05/07/kendrick-lamar-data-science.html), David K. Laing

[Vilken är Kents mest deprimerande låt? (What is Kent's most depressing song?)](http://dataland.rbind.io/2017/11/07/vilken-%C3%A4r-kents-mest-deprimerande-lat/), Filip Wästberg

[Чёрное зеркало Arcade Fire (Black Mirror Arcade Fire)](http://thesociety.ru/arcadefire), TheSociety

[Sente-se triste quando ouve "Amar pelos dois"? Não é o único (Do you feel sad when you hear "Love for both?" You're not alone)](http://rr.sapo.pt/especial/112355/sente-se-triste-quando-ouve-amar-pelos-dois-nao-e-o-unico), Rui Barros, Rádio Renascença

[Using Data to Find the Angriest Death Grips Song](https://towardsdatascience.com/angriest-death-grips-data-anger-502168c1c2f0), Evan Oppenheimer

[Hierarchical clustering of David Bowie records](https://twitter.com/WireMonkey/status/1009915034246565891?s=19), Alyssa Goldberg

[tayloR](https://medium.com/@simranvatsa5/taylor-f656e2a09cc3), Simran Vatsa

[Long Distance Calling: Data Science meets Post-Rock...](https://sebastiankuhn.wordpress.com/2017/11/08/r-spotify-part-1-long-distance-calling/), Sebastian Kuhn