I have just recently started faffing with golang. I taught myself php & jquery pretty easily & by creating a project to do so.
I am trying the same atm to teach myself golang, but I have gotten to a point now which either im missing the point or just searching incorrectly.
....
Ok so what I am trying to do is make a IRC bot. The one function listens to channel chatter & if certain commands are picked up it then will add relevant information to a sqlite3 database.
The problem is that one of the commands queries the database & will return multiple rows, which then need to be passed back to the original function & outputted into the IRC channel.
Where I am getting stuck is returning the queries output to the original function since it is multiple rows of data
Im importing the below libraries
fmt
net/textproto
regexp
strings
os
database/sql
_ github.com/mattn/go-sqlite3
func getLineup() {
// Open Database
db, err := sql.Open("sqlite3", "./database.db")
if err != nil {
fmt.Println(err)
os.Exit(1)
}
defer db.Close()
// Prepare Query
statement, err := db.Prepare("SELECT team, player FROM lineup ORDER BY team DESC;")
if err != nil {
fmt.Println(err)
os.Exit(1)
}
// Execute Statement
rows, err := statement.Query()
defer rows.Close()
fmt.Println("Lineup:")
for rows.Next() {
var team string
var player string
rows.Scan(&team, &player)
fmt.Printf("%v %v\n", team, player)
}
}
So I can print it, but I need to pass it to another function which is where im lost
================================UPDATE====================================
Ok so here is my full code...
@evanmcdonnal With the updated code you gave above I now get the error
bot.go:70: cannot use p (type Player) as type *Player in append
package main
import (
"fmt"
"net/textproto"
"regexp"
"log"
"strings"
"database/sql"
// SQLite3
_ "github.com/mattn/go-sqlite3"
)
type PrivMsg struct {
nick, channel, text string
}
var (
conn *textproto.Conn
err error
ping = regexp.MustCompile("^PING :([a-zA-Z0-9\\.]+)$")
motd = regexp.MustCompile(":End of /MOTD command\\.$")
privmsg = regexp.MustCompile("^:([a-zA-Z0-9`_\\-]+)![a-zA-Z0-9/\\\\\\.\\-]+@[a-zA-Z0-9/\\\\\\.\\-]+ PRIVMSG (#[a-zA-Z0-9]+) :(.*)$")
)
func talk(channel, msg string) {
conn.Cmd("PRIVMSG " + channel + " :" + msg)
}
func handlePing(auth string) {
conn.Cmd("PONG :" + auth)
fmt.Printf("PONG :%s\n", auth)
}
type Player struct {
TeamName string
PlayerName string
}
func getLineup() {
// Open Database
db, err := sql.Open("sqlite3", "./database.db")
if err != nil {
log.Fatal(err)
}
// Prepare Query
statement, err := db.Prepare("SELECT team, player FROM lineup ORDER BY team DESC;")
if err != nil {
log.Fatal(err)
}
// Execute Statement
rows, err := statement.Query()
defer rows.Close()
// Output Code
var Players []*Player
for rows.Next() {
p := &Player{}
if err := rows.Scan(p.TeamName, p.PlayerName); err != nil{
log.Fatal(err)
}
//Players = append(Players, p)
return p.TeamName, p.PlayerName
}
// pass Players to next function/return it whatever
fmt.Println(Players)
}
func handlePrivmsg(pm *PrivMsg) {
if strings.Contains(pm.text, "!add t") {
talk(pm.channel, pm.nick + " added to Terrorists")
saveLineup("T", pm.nick)
}
if strings.Contains(pm.text, "!add ct") {
talk(pm.channel, pm.nick + " added to Counter-Terrorists")
saveLineup("CT", pm.nick)
}
if strings.Contains(pm.text, "!rem") {
talk(pm.channel, pm.nick + " has been removed from the current lineup")
}
if strings.Contains(pm.text, "!votemap") {
talk(pm.channel, pm.nick + " map vote code")
}
if strings.Contains(pm.text, "!moveme") {
talk(pm.channel, pm.nick + " has been moved to Counter-Terrorists")
}
if strings.Contains(pm.text, "!teams") {
getLineup()
//fmt.Println(*tpList)
talk(pm.channel, pm.nick + " will show the current teams")
}
if strings.Contains(pm.text, "!add ct") {
talk(pm.channel, pm.nick + " added to Counter-Terrorists")
}
if strings.Contains(pm.text, "pug-bot") {
talk(pm.channel, "Hello, " + pm.nick + "!")
}
}
func saveLineup(Team, Player string) {
// Open Database
db, err := sql.Open("sqlite3", "./database.db")
if err != nil {
//log.Fatal(err)
fmt.Printf("%s", err)
}
// Get Current Lineup
rows, err := db.Query("SELECT team, player FROM lineup WHERE player = ?;", Player)
if err != nil {
log.Fatal(err)
}
defer rows.Close()
if Player == Player {
fmt.Println("You have already added yourself")
} else {
// Insert new Player
db.Exec(
"INSERT INTO lineup (team, player) VALUES (?, ?);",
Team,
Player,
)
}
}
func handleMotd() {
conn.Cmd("JOIN #ircchannel")
fmt.Println("JOIN #ircchannel")
}
func parseLine(line string) {
// Channel activity
if match := privmsg.FindStringSubmatch(line); match != nil {
pm := new(PrivMsg)
pm.nick, pm.channel, pm.text = match[1], match[2], match[3]
handlePrivmsg(pm)
return
}
// Server PING
if match := ping.FindStringSubmatch(line); match != nil {
handlePing(match[1])
return
}
// End of MOTD (successful login to IRC server)
if match := motd.FindString(line); match != "" {
handleMotd()
return
}
}
func main() {
conn, err = textproto.Dial("tcp", "irc.server.org:6667")
if err != nil {
fmt.Printf("%s", err)
return
}
conn.Cmd("NICK pug-bot\n\rUSER pug-bot 8 * :pAsSwOrD")
for {
text, err := conn.ReadLine()
if err != nil {
fmt.Printf("%s", err)
return
}
go parseLine(text)
fmt.Println(text)
}
}
Essentially I would like to pass the result of the sql query back into the talk(pm.channel, pm.nick + " SQL QUERY RESULT") irc talk section
