crowsnest/cmd/frontend/main.go

package main

import (
	"crowsnest/internal/model/database"
	"database/sql"
	"errors"
	"log"
	"net/http"
	"os"

	_ "github.com/lib/pq"
	_ "github.com/mattn/go-sqlite3"
)

type App struct {
	articles *database.ArticleModel
}

func main() {
	// collect environement variables
	databaseURL := os.Getenv("DB_URL")
	dbDriver := os.Getenv("DB_DRIVER")

	// connect to database
	var db *sql.DB
	var err error
	switch {
	case dbDriver == "sqlite3":
		db, err = sql.Open("sqlite3", databaseURL)
		if err != nil {
			log.Fatal(err)
		}
	default:
		log.Fatal(errors.New("given DB_DRIVER is not supported"))
	}

	// define app
	app := &App{
		articles: &database.ArticleModel{DB: db, DbDriver: dbDriver},
	}

	// start web server
	server := http.Server{
		Addr:    ":8080",
		Handler: app.routes(),
	}

	log.Println("server started, listening on :8080")
	server.ListenAndServe()
}