60 lines
1.2 KiB
Go
60 lines
1.2 KiB
Go
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"context"
|
||
|
|
"os"
|
||
|
|
"os/signal"
|
||
|
|
"syscall"
|
||
|
|
|
||
|
|
"github.com/slack-go/slack"
|
||
|
|
"gorm.io/gorm"
|
||
|
|
)
|
||
|
|
|
||
|
|
const (
|
||
|
|
serviceName = "service-notifications"
|
||
|
|
serviceDescription = "Notifications for church services"
|
||
|
|
serviceVersion = "0.1"
|
||
|
|
)
|
||
|
|
|
||
|
|
// App is the global application structure for communicating between servers and storing information.
|
||
|
|
type App struct {
|
||
|
|
flags *Flags
|
||
|
|
config *Config
|
||
|
|
db *gorm.DB
|
||
|
|
slack *slack.Client
|
||
|
|
http *HTTPServer
|
||
|
|
}
|
||
|
|
|
||
|
|
var app *App
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
app = new(App)
|
||
|
|
app.ParseFlags()
|
||
|
|
app.ReadConfig()
|
||
|
|
app.InitDB()
|
||
|
|
app.slack = slack.New(app.config.Slack.APIToken)
|
||
|
|
|
||
|
|
// If update is requested, run updates and end the program.
|
||
|
|
if app.flags.Update {
|
||
|
|
UpdatePCData()
|
||
|
|
UpdateSlackData()
|
||
|
|
CreateSlackChannels()
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
// Configure the HTTP server.
|
||
|
|
app.http = NewHTTPServer()
|
||
|
|
|
||
|
|
// Setup context with cancellation function to allow background services to gracefully stop.
|
||
|
|
ctx, ctxCancel := context.WithCancel(context.Background())
|
||
|
|
app.http.Start(ctx)
|
||
|
|
|
||
|
|
// Monitor common signals.
|
||
|
|
c := make(chan os.Signal, 1)
|
||
|
|
signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
|
||
|
|
// Wiat for a signal.
|
||
|
|
<-c
|
||
|
|
// Stop the HTTP server and end.
|
||
|
|
ctxCancel()
|
||
|
|
}
|