#########
# Date: 4/6/21
# Author: JA
#########

pacman::p_load(
  #dataframe
  tidyverse,
  #viz
  plotly,
  #webapps
  shiny,
  #api
  spotifyr
)

# Authentication
# Authorization

readRenviron(".env")

# Dashboard
# Tablero

# (Graphical) User Interface
ui <- pageWithSidebar(
  titlePanel("Hallazgos Musicales"),
  sidebarPanel(
    selectInput(
      inputId="a",
      label="Artista A:",
      choices=c("The XX","Billie Eilish","Adele","The Killers"),
      selected="The XX"
    ),
    selectInput(
      inputId="b",
      label="Artista B:",
      choices=c("Willie Colón","Bad Bunny","J Balvin","Buena Vista Social Club"),
      selected="Buena Vista Social Club"
    ),
    selectInput(
      inputId="x",
      label="X:",
      choices=c("valence","danceability","instrumentalness","key_name"),
      selected="valence"
    ),
    selectInput(
      inputId="y",
      label="Y:",
      choices=c("valence","danceability","instrumentalness","key_name"),
      selected="key_name"
    ),
  ),
  mainPanel(
    plotlyOutput(
      outputId="plot"
    )
  )
)

# Server
# Reactivity

server <- function(input,output) {
  
  access_token <- reactive({
    get_spotify_access_token(
      client_id=Sys.getenv("SPOTIFY_CLIENT_ID"),
      client_secret=Sys.getenv("SPOTIFY_CLIENT_SECRET")
    )
  })
  
  a <- reactive({
    get_artist_audio_features(
      artist=input$a,
      authorization=access_token()
    )
  })
  
  b <- reactive({
    get_artist_audio_features(
      artist=input$b,
      authorization=access_token()
    )
  })
  
  x <- reactive({
    input$x
  })
  
  y <- reactive({
    input$y
  })
  
  output$plot <- renderPlotly({
    plot <- ggplot() +
      geom_point(a(),mapping=aes_string(x=x(),y=y()),color="blue") +
      geom_point(b(),mapping=aes_string(x=x(),y=y()),color="red")
    ggplotly(plot)
  })
}

shinyApp(ui,server)

# killers <- get_artist_audio_features(
#   artist="The Killers",
#   authorization=access_token
# )
#
# willie <- get_artist_audio_features(
#   artist="Willie Colón",
#   authorization=access_token
# )
# 
# ggplot() +
#   geom_point(willie,mapping=aes(x=valence,y=key_name),color="red") +
#   geom_point(killers,mapping=aes(x=valence,y=key_name),color="blue")