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main.go
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main.go
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package main
import (
"flag"
"fmt"
"io"
"log"
"net/http"
"os"
"path/filepath"
"time"
)
// Configuration
var debugMode = true
var localTimeZone = "Local" // "America/Chicago"
var RemoteCalendarUrl = "https://f1calendar.com/download/f1-calendar_p1_p2_p3_q_gp.ics"
var CalendarFilenameDefault = "formula.1.downloaded.ics"
var CalendarFilename = flag.String("calendarFile", CalendarFilenameDefault, "A fully qualified or relative path to the .ics file used for events.")
var WebhookConfFilenameDefault = "webhook_url.conf"
var WebhookConfFilename = flag.String("webhookFile", WebhookConfFilenameDefault, "A fully qualified or relative path to your webhook_url.conf file. Defaults to webhook_url.conf.")
func main() {
findValidConfigFiles(CalendarFilename, WebhookConfFilename)
// Attmept download file and use that instead
var RemoteCalendarFileDownloadLocation = "formula.1.downloaded.ics"
err := downloadFile(RemoteCalendarFileDownloadLocation, RemoteCalendarUrl)
if err != nil {
log.Printf("Couldn't download fresh calendar file: %s", err.Error())
} else {
log.Printf("Using downloaded file %s", RemoteCalendarFileDownloadLocation)
*CalendarFilename = RemoteCalendarFileDownloadLocation
}
var webhook = DiscordWebhook{
debug: debugMode,
configFile: *WebhookConfFilename,
}
var cal = F1Calendar{
debug: debugMode,
filename: *CalendarFilename,
}
if debugMode {
fmt.Println("Using Calendar File: ", *CalendarFilename)
fmt.Println("Using Webhook File: ", *WebhookConfFilename)
}
dow := time.Now().Weekday()
switch dow {
case time.Monday:
prefix := "<:f1:436383126743285760> Happy Monday! Here is the schedule for the next race weekend: \n"
suffix := "<:nico:436342726309445643>"
events := cal.GetEvents(Next7Days)
eventsStr := ""
if len(events) != 0 {
for _, event := range events {
eventsStr += SummarizeEvent(event, localTimeZone)
}
webhook.SendMessage(prefix + eventsStr + suffix)
}
case time.Thursday, time.Friday, time.Saturday, time.Sunday:
prefix := "<:f1:436383126743285760> Race Weekend! In the next 24 hours: \n"
suffix := "<:nico:436342726309445643>"
events := cal.GetEvents(Next24Hours)
eventsStr := ""
if len(events) != 0 {
for _, event := range events {
eventsStr += SummarizeEvent(event, localTimeZone)
}
webhook.SendMessage(prefix + eventsStr + suffix)
}
if len(events) > 0 && dow == time.Friday {
reminder := "<@&616676115645202462> - It's Friday! Remember to check your F1 fantasy teams!"
webhook.SendMessage(reminder)
}
default:
}
}
func findValidConfigFiles(calendarFile *string, webhookFile *string) {
// Calendar File
// Try the file as-given
if !isValidFile(*calendarFile) {
// Try to find calendar file in executable directory with given filepath
localDir, err := os.Executable()
if err != nil {
log.Fatal(err)
}
localDir = filepath.Dir(localDir) // Trim off .exe
candidateFile := localDir + string(os.PathSeparator) + *calendarFile
if !isValidFile(candidateFile) {
// Try to find calendar file in executable directory with default filename
candidateFile = localDir + string(os.PathSeparator) + CalendarFilenameDefault
if !isValidFile(candidateFile) {
log.Fatal("Was not able to open the provided calendar file nor the default calendar file.")
} else {
*calendarFile = candidateFile
}
} else {
*calendarFile = candidateFile
}
}
// Configuration File
// Try the file as-given
if !isValidFile(*webhookFile) {
// Try to find webhook file in executable directory with given filepath
localDir, err := os.Executable()
if err != nil {
log.Fatal(err)
}
localDir = filepath.Dir(localDir) // Trim off .exe
candidateFile := localDir + string(os.PathSeparator) + *webhookFile
if !isValidFile(candidateFile) {
// Try to find webhook file in executable directory with default filename
candidateFile = localDir + string(os.PathSeparator) + WebhookConfFilenameDefault
if !isValidFile(candidateFile) {
log.Fatal("Was not able to open the provided webhook file nor the default webhook file.")
} else {
*webhookFile = candidateFile
}
} else {
*webhookFile = candidateFile
}
}
}
func isValidFile(filename string) bool {
ret := true
if _, err := os.Open(filename); err != nil {
ret = false
}
return ret
}
func downloadFile(filepath string, url string) error {
response, err := http.Get(url)
if err != nil {
return err
}
defer func(body io.ReadCloser) {
err := body.Close()
if err != nil {
fmt.Printf("Error trying to close download stream %s: %s", err.Error(), url)
return
}
}(response.Body)
outfile, err := os.Create(filepath)
if err != nil {
return err
}
defer func(outfile *os.File) {
err := outfile.Close()
if err != nil {
panic(fmt.Sprintf("Error trying to close local file %s: %s", err.Error(), url))
}
}(outfile)
// Write the file
_, err = io.Copy(outfile, response.Body)
if err != nil {
return err
}
return nil
}