Files
multiarch-docker-images/piwigo-souvenirs/piwigo-souvenirs.go
2021-03-15 22:33:40 +01:00

293 lines
8.4 KiB
Go

package main
import (
"database/sql"
"encoding/gob"
"encoding/hex"
"flag"
"fmt"
"io/ioutil"
"math/rand"
"os"
"os/signal"
"strings"
"time"
_ "github.com/go-sql-driver/mysql"
qrcodeTerminal "github.com/Baozisoftware/qrcode-terminal-go"
"github.com/Rhymen/go-whatsapp"
"github.com/Rhymen/go-whatsapp/binary/proto"
)
type parameters struct {
mysqlURL string
whatsappSessionFile string
whatsappGroup string
piwigoImageFolder string
piwigoBaseURL string
}
func loadParameters() (parameters) {
param := new(parameters)
flag.StringVar(&param.mysqlURL, "mysql-url", "", "The full url of the MySQL server to connect to")
flag.StringVar(&param.whatsappSessionFile, "whatsapp-session-file", "", "The file to save the WhatsApp session to")
flag.StringVar(&param.whatsappGroup, "whatsapp-group", "", "The ID of the WhatsApp group to send the message to")
flag.StringVar(&param.piwigoImageFolder, "piwigo-image-folder", "", "The folder where the Piwigo images are stored")
flag.StringVar(&param.piwigoBaseURL, "piwigo-base-url", "", "The base url of the Piwigo server")
flag.Parse()
return *param
}
func login(wac *whatsapp.Conn, sessionFile string) error {
// Load saved session
session, err := readSession(sessionFile)
if err == nil {
// Restore session
session, err = wac.RestoreWithSession(session)
if err != nil {
return fmt.Errorf("restoring failed: %v", err)
}
} else {
// No saved session -> regular login
qr := make(chan string)
go func() {
terminal := qrcodeTerminal.New()
terminal.Get(<-qr).Print()
}()
session, err = wac.Login(qr)
if err != nil {
return fmt.Errorf("error during login: %v", err)
}
}
// Save session
err = writeSession(session, sessionFile)
if err != nil {
return fmt.Errorf("error saving session: %v", err)
}
return nil
}
func readSession(sessionFile string) (whatsapp.Session, error) {
session := whatsapp.Session{}
file, err := os.Open(sessionFile)
if err != nil {
return session, err
}
defer file.Close()
decoder := gob.NewDecoder(file)
err = decoder.Decode(&session)
if err != nil {
return session, err
}
return session, nil
}
func writeSession(session whatsapp.Session, sessionFile string) error {
file, err := os.Create(sessionFile)
if err != nil {
return err
}
defer file.Close()
encoder := gob.NewEncoder(file)
err = encoder.Encode(session)
if err != nil {
return err
}
return nil
}
func sendMessage(wac *whatsapp.Conn, group string, message string, title string, thumbnail []byte) error {
ts := uint64(time.Now().Unix())
status := proto.WebMessageInfo_PENDING
b := make([]byte, 10)
rand.Read(b)
id := strings.ToUpper(hex.EncodeToString(b))
fromMe := true
msg := &proto.WebMessageInfo{
Key: &proto.MessageKey{
FromMe: &fromMe,
Id: &id,
RemoteJid: &group,
},
MessageTimestamp: &ts,
Message: &proto.Message{
ExtendedTextMessage: &proto.ExtendedTextMessage{
Title: &title,
Text: &message,
JpegThumbnail: thumbnail,
},
},
Status: &status,
}
msgId, err := wac.Send(msg)
if err != nil {
return fmt.Errorf("Error sending message with title '%s': %v", title, err)
}
fmt.Fprintf(os.Stdout, "Message with title '%s' and id '%d' sent\n", title, msgId)
return nil
}
func testConnexions(param parameters) error {
// Create new WhatsApp connection and connect
wac, err := whatsapp.NewConn(20 * time.Second)
if err != nil {
return fmt.Errorf("Error creating connection to WhatsApp: %v", err)
}
err = login(wac, param.whatsappSessionFile)
if err != nil {
return fmt.Errorf("Error logging in WhatsApp: %v", err)
}
<-time.After(3 * time.Second)
defer wac.Disconnect()
// Prints the available groups if none provided
if param.whatsappGroup == "" {
fmt.Fprintf(os.Stdout, "No WhatsApp group provided, showing all available groups\n")
for _, chatNode := range wac.Store.Chats {
fmt.Fprintf(os.Stdout, "%s | %s\n", chatNode.Jid, chatNode.Name)
}
return fmt.Errorf("No WhatsApp group provided")
} else {
_, exists := wac.Store.Chats[param.whatsappGroup]
if (!exists) {
return fmt.Errorf("Unknown WhatsApp group %s", param.whatsappGroup)
}
}
// Connect to MySQL and execute a test query
db, err := sql.Open("mysql", param.mysqlURL + "?parseTime=true")
if err != nil {
return fmt.Errorf("Error connecting to MySQL: %v", err)
}
defer db.Close()
results, err := db.Query("SELECT Version();")
if err != nil {
return fmt.Errorf("Error executing MySQL query: %v", err)
}
defer results.Close()
// Check the existence of the piwigo thumbnails directory
_, err = os.Stat(fmt.Sprintf("%s/galleries", param.piwigoImageFolder))
if err != nil {
return fmt.Errorf("Could not find Piwigo thumbnail directory: %v", err)
}
return nil
}
func runLoop(param parameters) error {
// Create new WhatsApp connection and connect
wac, err := whatsapp.NewConn(20 * time.Second)
if err != nil {
return fmt.Errorf("Error creating connection to WhatsApp: %v", err)
}
err = login(wac, param.whatsappSessionFile)
if err != nil {
time.Sleep(30 * time.Second)
err = login(wac, param.whatsappSessionFile)
if err != nil {
return fmt.Errorf("Error logging in WhatsApp: %v", err)
}
}
<-time.After(3 * time.Second)
defer wac.Disconnect()
// Connect to MySQL and execute the query
db, err := sql.Open("mysql", param.mysqlURL + "?parseTime=true")
if err != nil {
return fmt.Errorf("Error connecting to MySQL: %v", err)
}
defer db.Close()
results, err := db.Query("SELECT piwigo_sharealbum.code, piwigo_categories.name, representatives.path, representatives.representative_ext, MIN(piwigo_images.date_creation) AS date_creation FROM piwigo_sharealbum JOIN piwigo_categories ON piwigo_sharealbum.cat = piwigo_categories.id JOIN piwigo_image_category ON piwigo_image_category.category_id = piwigo_categories.id JOIN piwigo_images ON piwigo_image_category.image_id = piwigo_images.id JOIN piwigo_images AS representatives ON piwigo_categories.representative_picture_id = representatives.id WHERE piwigo_images.date_creation IS NOT NULL GROUP BY piwigo_categories.id;")
if err != nil {
return fmt.Errorf("Error executing MySQL query: %v", err)
}
defer results.Close()
var albumCode string
var albumName string
var representativePath string
var representativeExt sql.NullString
var albumDate time.Time
for results.Next() {
err = results.Scan(&albumCode, &albumName, &representativePath, &representativeExt, &albumDate)
if err != nil {
fmt.Fprintf(os.Stderr, "Error retrieving MySQL results for album '%s': %v\n", albumName, err)
continue
}
if (albumDate.Month() == time.Now().Month()) && (albumDate.Day() == time.Now().Day()) {
// Prepare the message
url := fmt.Sprintf("%s/?xauth=%s", param.piwigoBaseURL, albumCode)
imagePath := representativePath
if (strings.HasPrefix(imagePath, "./")) {
imagePath = imagePath[2:len(imagePath)]
}
imageExt := imagePath[strings.LastIndex(imagePath, ".")+1:len(imagePath)]
if representativeExt.Valid {
imageExt = representativeExt.String
imagePath = imagePath[0:strings.LastIndex(imagePath, "/")] + "/pwg_representative" + imagePath[strings.LastIndex(imagePath, "/"):len(imagePath)]
}
imagePath = imagePath[0:strings.LastIndex(imagePath, ".")] + "-th." + imageExt
thumbnail, err := ioutil.ReadFile(fmt.Sprintf("%s/%s", param.piwigoImageFolder, imagePath))
if err != nil {
fmt.Fprintf(os.Stderr, "Error reading thumbnail for album '%s': %v\n", albumName, err)
continue
}
// Send the message
sendMessage(wac, param.whatsappGroup, fmt.Sprintf("Il y a %d an(s) : %s", time.Now().Year()-albumDate.Year(), url), albumName, thumbnail)
if err != nil {
fmt.Fprintf(os.Stderr, "Error sending message to WhatsApp for album '%s': %v\n", albumName, err)
continue
}
}
}
return nil
}
func main() {
// Handle interrupts to clean properly
c := make(chan os.Signal)
signal.Notify(c, os.Interrupt)
go func() {
select {
case sig := <-c:
fmt.Printf("Got %s signal. Aborting...\n", sig)
os.Exit(1)
}
}()
// Load the parameters
param := loadParameters()
// Test the connexion on startup
err := testConnexions(param)
if err != nil {
fmt.Fprintf(os.Stderr, "Unable to connect: %v\n", err)
return
}
// Run the loop everyday at 7
for {
t := time.Now()
n := time.Date(t.Year(), t.Month(), t.Day(), 7, 0, 0, 0, t.Location())
d := n.Sub(t)
if d < 0 {
n = n.Add(24 * time.Hour)
d = n.Sub(t)
}
fmt.Fprintf(os.Stderr, "Sleeping for: %s\n", d)
time.Sleep(d)
err := runLoop(param)
if err != nil {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
continue
}
}
}