/
main.go
227 lines (172 loc) · 3.79 KB
/
main.go
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package main
import (
"fmt"
"strings"
"strconv"
"time"
"github.com/headzoo/surf"
"github.com/headzoo/surf/browser"
"github.com/BurntSushi/toml"
"github.com/headzoo/surf/jar"
"github.com/PuerkitoBio/goquery"
"net/smtp"
"text/template"
"bytes"
)
const mainpage = "http://catalogue.bramlib.on.ca/Mobile"
type Config struct {
From from
Patrons []patron
}
type from struct {
Smtp string
Email string
Auth string
}
type patron struct {
Name string
Card string
Pin string
Email string
}
func main() {
Getmainpage()
fmt.Println("done")
}
func Getmainpage() {
var conf Config
_, err := toml.DecodeFile("config.toml", &conf)
if err != nil {
panic(err)
}
for _, p := range conf.Patrons {
items := scrape(mainpage, p)
if len(items) == 0 {
panic("blah no items out")
}
message := compose(conf.From, items)
fmt.Println("the message is:", message, "ok?")
err = mail(message, conf.From, p)
if err != nil {
panic(err)
}
}
fmt.Println("done")
}
func compose(f from, items []an_item) (message string) {
t_header := template.New("header")
t_body := t_header.New("body")
t_header, err := t_header.Parse("To: {{.Email}}\r\nSubject: Library Alert\r\n")
if err != nil {
panic(err)
}
t_body, err = t_body.Parse("\r\n{{.Title}}")
if err != nil {
panic(err)
}
b := new(bytes.Buffer)
err = t_header.Execute(b, f)
if err != nil {
panic(err)
}
message = b.String()
b.Reset()
err = t_body.Execute(b, items[0])
if err != nil {
panic(err)
}
return message + b.String()
}
func mail(message string, f from, p patron) (err error) {
// parse host from Smtp = "host:port"
host := strings.Split(f.Smtp, ":")[0]
a := smtp.PlainAuth("", f.Email, f.Auth, host)
err = smtp.SendMail(f.Smtp, a, f.Email,
[]string{p.Email}, []byte(message))
return err;
}
func scrape(page string, p patron) (items []an_item) {
bow := surf.NewBrowser()
historyJar := jar.NewMemoryHistory()
bow.SetHistoryJar(historyJar)
// grab main page and click to login page
err := bow.Open(page)
if err != nil {
panic(err)
}
fmt.Println(bow.Title())
err = bow.Click("a:contains('My Account')")
if err != nil {
panic(err)
}
fmt.Println(bow.Title())
// populate login form and submit
form, err := bow.Form("form[action='/Mobile/MyAccount/Logon']")
if err != nil {
panic(err)
}
fmt.Println("logging in", p.Name)
form.Input("barcodeOrUsername", p.Card)
form.Input("password", p.Pin)
fmt.Println(form)
err = form.Submit()
if err != nil {
panic(err)
}
items_out := bow.Find("a[href='/Mobile/MyAccount/ItemsOut']")
num_items_out, err := strconv.Atoi(strings.Split(items_out.Text(), " ")[0])
if err != nil {
panic(err)
}
if num_items_out > 0 {
items = getItemsOut(bow)
return items
}
return nil
}
type an_item struct {
Title string
Due string
}
func getItemsOut(bow *browser.Browser) (gather_items []an_item) {
err := bow.Click("a[href='/Mobile/MyAccount/ItemsOut']")
if err != nil {
panic(err)
}
gather_items = []an_item{}
bow.Find("tr").Each(func(i int, s *goquery.Selection) {
b := s.Find("td > a")
if b.Length() == 0 {
return
}
title := b.Text()
html, err := b.Parent().Html()
if err != nil {
panic(err)
}
parts := strings.Split(html, "<br/>")
due := parts[2]
due = strings.Split(due, "<img")[0]
due = strings.Split(due, ":")[1]
due = strings.TrimSpace(due)
parts = strings.Split(due, "/")
// how old?
now := time.Now()
due_time, err := time.Parse("2/1/2006", due)
if err != nil {
panic(err)
}
duration := time.Since(due_time)
days := duration.Hours()/24.0
if days > -2 && days < 0 {
fmt.Println("due soon")
} else if days >= 0 {
fmt.Println("overdue")
}
fmt.Println("now:", now)
fmt.Println("due_time:", due_time)
a := an_item{title, due}
gather_items= append(gather_items, a)
})
return
}