more first commits

lePereT · lePereT · commit 5081b110096e · 2017-08-21T00:39:38.000+01:00
diff --git a/README.md b/README.md
@@ -1,4 +1,4 @@
 # gowebapp
 A first web app in golang
 
-This is my first stumbling step in golang for a web app.
+This is my first stumbling step in golang for a web app. This is all based on the fantastic tutorial by Grisha at https://grisha.org/blog/2017/04/27/simplistic-go-web-app/ 
diff --git a/db/db.go b/db/db.go
@@ -0,0 +1,65 @@
+package db
+
+import (
+    "database/sql"
+
+    "github.com/lePereT/gowebapp/model"
+    "github.com/jmoiron/sqlx"
+    _ "github.com/lib/pq"
+)
+
+type Config struct {
+    ConnectString string
+}
+
+func InitDb(cfg Config) (*pgDb, error) {
+    if dbConn, err := sqlx.Connect("postgres", cfg.ConnectString); err != nil {
+        return nil, err
+    } else {
+        p := &pgDb{dbConn: dbConn}
+        if err := p.dbConn.Ping(); err != nil {
+            return nil, err
+        }
+        if err := p.createTablesIfNotExist(); err != nil {
+            return nil, err
+        }
+        if err := p.prepareSqlStatements(); err != nil {
+            return nil, err
+        }
+        return p, nil
+    }
+}
+
+type pgDb struct {
+    dbConn *sqlx.DB
+
+    sqlSelectPeople *sqlx.Stmt
+}
+
+func (p *pgDb) createTablesIfNotExist() error {
+    create_sql := `
+
+       CREATE TABLE IF NOT EXISTS people (
+       id SERIAL NOT NULL PRIMARY KEY,
+       first TEXT NOT NULL,
+       last TEXT NOT NULL);
+
+    `
+    if rows, err := p.dbConn.Query(create_sql); err != nil {
+        return err
+    } else {
+        rows.Close()
+    }
+    return nil
+}
+
+func (p *pgDb) prepareSqlStatements() (err error) {
+
+    if p.sqlSelectPeople, err = p.dbConn.Preparex(
+        "SELECT id, first, last FROM people",
+    ); err != nil {
+        return err
+    }
+
+    return nil
+}
diff --git a/ui/ui.go b/ui/ui.go
@@ -0,0 +1,45 @@
+package ui
+
+import (
+    "fmt"
+    "net"
+    "net/http"
+    "time"
+
+    "github.com/lePereT/gowebapp/model"
+)
+
+type Config struct {
+    Assets http.FileSystem
+}
+
+func Start(cfg Config, m *model.Model, listener net.Listener) {
+
+    server := &http.Server{
+        ReadTimeout:    60 * time.Second,
+        WriteTimeout:   60 * time.Second,
+        MaxHeaderBytes: 1 << 16}
+
+    http.Handle("/", indexHandler(m))
+
+    go server.Serve(listener)
+}
+
+const indexHTML = `
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>Simple Go Web App</title>
+  </head>
+  <body>
+    <div id='root'></div>
+  </body>
+</html>
+`
+
+func indexHandler(m *model.Model) http.Handler {
+    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+        fmt.Fprintf(w, indexHTML)
+    })
+}
