bahaimotd/main.go

package main

import (
	"database/sql"
	"fmt"
	"time"
	"math/rand"
	"os"

	_ "modernc.org/sqlite"
)

func main() {
	rand.Seed(time.Now().UnixNano())
	db, err := sql.Open("sqlite", "prayers.db")
	if err != nil {
		fmt.Println("error loading database driver: "+ err.Error())
		os.Exit(1)
	}
	langcode := "en"
	if len(os.Args) > 1 {
		langcode = os.Args[1]
	}
	rows, err := db.Query("select text, author from prayers where language = ?", langcode)
	if err != nil {
		fmt.Println("database query failed (is prayers.db in your current directory?): " +err.Error())
		os.Exit(2)
	}
	var prayers []string
	for rows.Next() {
		var prayer, author string
		rows.Scan(&prayer, &author)
		prayers = append(prayers, prayer+"\n\n-- "+author)
	}
	if len(prayers) < 1 {
		fmt.Println("query returns no prayers")
		os.Exit(3)
	}
	fmt.Println(prayers[rand.Intn(len(prayers))])
}