feat: Adding initial server and migration system.

go.mod

@@ -0,0 +1,10 @@
+module WWWShop
+
+go 1.15
+
+require (
+	github.com/go-pg/pg/v10 v10.7.4 // indirect
+	github.com/golang-migrate/migrate/v4 v4.14.1
+	github.com/howeyc/fsnotify v0.9.0 // indirect
+	github.com/lib/pq v1.8.0
+)

main.go

@@ -0,0 +1,9 @@
+package main
+
+import (
+    "WWWShop/wwwshop"
+)
+
+func main() {
+    wwwshop.New().Init();
+}

migrations/0000001_create_users_table.down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS users;

migrations/0000001_create_users_table.up.sql

@@ -0,0 +1,5 @@
+CREATE TABLE IF NOT EXISTS users (
+    id serial PRIMARY KEY,
+    username text UNIQUE NOT NULL,
+    password text NOT NULL
+);

wwwshop/dao/database/database.go

@@ -0,0 +1,35 @@
+package database
+
+import (
+	"database/sql"
+	"fmt"
+	"github.com/golang-migrate/migrate/v4"
+	"github.com/golang-migrate/migrate/v4/database/postgres"
+	_ "github.com/golang-migrate/migrate/v4/source/file"
+	_ "github.com/lib/pq"
+	"log"
+	"os"
+)
+
+func DB() *sql.DB {
+	db, err := sql.Open("postgres", os.Getenv("DATABASE_URL"))
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Unable to connect to database: %v\n", err)
+		os.Exit(1)
+	}
+	return db
+}
+
+func Migrate(db *sql.DB) {
+	driver, err := postgres.WithInstance(db, &postgres.Config{})
+	if err != nil {
+		log.Fatal(err)
+	}
+	m, err := migrate.NewWithDatabaseInstance("file://migrations", "postgres", driver)
+	if err != nil {
+		log.Fatal(err)
+	}
+	if err := m.Up(); err != nil {
+		log.Fatal(err)
+	}
+}

wwwshop/wwwshop.go

@@ -0,0 +1,24 @@
+package wwwshop
+
+import (
+    "net/http"
+    "fmt"
+    d "WWWShop/wwwshop/dao/database"
+)
+
+type WWWShop struct {}
+
+func New() WWWShop {
+    var self = WWWShop {};
+    return self;
+}
+
+
+func (self WWWShop) Init() {
+    var db = d.DB()
+    d.Migrate(db)
+    http.HandleFunc("/", func( w http.ResponseWriter, r *http.Request) {
+        fmt.Fprintf(w, "Hello world")
+    })
+    http.ListenAndServe(":8080", nil)
+}