func getDetails(api *stocks.API, userID stocks.UserID) []stocks.StockDetail {
details, err := api.GetStockDetailsForUser(userID)
if err != nil {
panic(err)
}
return details
}
func fetchLatest(api *stocks.API, symbols ...string) {
// Run through each actively tracked stock and calculate stopping prices, notify next of kin, what have you...
log.Printf("%d stocks tracked.\n", len(symbols))
for _, symbol := range symbols {
// Record trading history:
log.Printf("%s: recording historical data and calculating statistics...\n", symbol)
api.RecordHistory(symbol)
}
// Fetch current prices from Yahoo into the database:
log.Printf("Fetching current prices...\n")
api.GetCurrentHourlyPrices(true, symbols...)
}
func attemptEmailUser(api *stocks.API, user *stocks.User, sd *stocks.StockDetail, lastDeliveryTime *stocks.NullDateTime, templateName string) bool {
// Determine next available delivery time:
nextDeliveryTime := time.Now()
if (*lastDeliveryTime).Valid {
nextDeliveryTime = (*lastDeliveryTime).Value.Add(user.NotificationTimeout)
}
// Can we deliver?
if (*lastDeliveryTime).Valid && !time.Now().After(nextDeliveryTime) {
log.Printf(" Not delivering notification email due to anti-spam timeout; next delivery after %s\n", nextDeliveryTime.Format(time.RFC3339))
return false
}
log.Printf(" Delivering notification email to %s <%s>...\n", user.Name, user.PrimaryEmail())
// Format mail addresses:
from := mail.Address{"stock-watcher-" + sd.Stock.Symbol, "stock.watcher." + sd.Stock.Symbol + "@bittwiddlers.org"}
to := mail.Address{user.Name, user.PrimaryEmail()}
// Execute email template to get subject and body:
subject := textTemplateString(emailTemplate, templateName+"/subject", sd)
body := textTemplateString(emailTemplate, templateName+"/body", sd)
// Deliver email:
if err := mailutil.SendHtmlMessage(from, to, subject, body); err != nil {
log.Println(err)
log.Printf(" Failed delivering notification email.\n")
return false
} else {
log.Printf(" Delivered notification email.\n")
// Successfully delivered email as far as we know; record last delivery date/time:
*lastDeliveryTime = stocks.NullDateTime{Value: time.Now(), Valid: true}
api.UpdateNotifyTimes(&sd.Stock)
return true
}
}