package main

import (
	"github.com/gin-gonic/gin"
	"gorm.io/gorm"
	"log/slog"
	"os"
)

// Environment type is used with route methods
// So that we can easily inject/contain context data like DB connections
type Env struct {
	db *gorm.DB
}

var spotifyClientID = os.Getenv("SPOTIFY_ID")
var spotifyClientSecret = os.Getenv("SPOTIFY_TOKEN")

func setupRouter(env *Env, spotifyID string, spotifySecret string) *gin.Engine {
	var r *gin.Engine = gin.Default()
	// Do not trust any reverse proxy by default
	// See: https://pkg.go.dev/github.com/gin-gonic/gin#Engine.SetTrustedProxies
	r.SetTrustedProxies(nil)
	r.Use(spotifyAuth(spotifyID, spotifySecret))
	r.Use(paginator())
	r.GET("/alive", env.alive)
	r.GET("/artists/:artistID", env.getArtistByID)
	r.GET("/artists", env.getArtistByName)
	r.GET("/genres", env.getGenres)

	// POST create endpoint
	r.POST("/genres", env.createGenre)
	return r
}

func main() {
	// If the auth/ID variables are empty something is probably misconfigured
	if spotifyClientID == "" {
		slog.Warn("[GOMUSIC] No Spotify ID configured in 'SPOTIFY_ID' environment variable")
	}
	if spotifyClientSecret == "" {
		slog.Warn("[GOMUSIC] No Spotify secret configured in 'SPOTIFY_TOKEN' environment variable")
	}

	db := setupDatabase()
	env := &Env{db: db}

	// Router/middleware and server setup
	r := setupRouter(env, spotifyClientID, spotifyClientSecret)
	r.Run(":8000")
}