package main

import (
       	"database/sql"
       	"fmt"
       	"log"

       	_ "github.com/bmizerany/pq"
)

/* PostgreSQL in Go: Create table & Insert row

1. Create the user and database from the psql cli, as an admin user:

% psql
postgres=# CREATE USER alpha_user with password 'alpha01';
postgres=# CREATE DATABASE alpha_db01 OWNER alpha_user;

*/

// 2. This table will be created (If it doesnt already exist) so that we can insert some shit:
var create_person_table = `
CREATE TABLE IF NOT EXISTS person(
       	id serial primary key,
       	username varchar not null,
       	first_name varchar,
       	last_name varchar,
       	email varchar
);`

// 3. The admin user will be inserted
var insert_admin_user = `
INSERT INTO person(username, first_name, last_name, email)
VALUES('admin', 'Admin', 'Administrator', 'admin@localhost');
`

// 4. The db, which represents a database - not a database connection, is defined globally.
var db sql.DB

func main() {
       	dbuser := "alpha_user"
       	dbname := "alpha_db01"
       	dbpass := "alpha01"
       	dbport := "5432"

       	db, err := sql.Open("postgres",
       		fmt.Sprintf("dbname=%s user=%s password=%s port=%s sslmode=disable", dbname, dbuser, dbpass, dbport))

       	defer db.Close()

       	if err != nil {
       		log.Panic(err)
       	}

       	err = db.Ping()
       	if err != nil {
       		log.Panic(err)
       	}

       	_, err = db.Exec(create_person_table)
       	if err != nil {
       		log.Panic(err)
       	}

       	fmt.Println("Table created!")

       	_, err = db.Exec(insert_admin_user)
       	if err != nil {
       		log.Panic(err)
       	}

       	fmt.Println("Admin user created")
}