1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140
|
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"bufio"
"fmt"
"log"
"net/http"
"os"
"sort"
"strings"
gmail "google.golang.org/api/gmail/v1"
)
func init() {
registerDemo("gmail", gmail.MailGoogleComScope, gmailMain)
}
type message struct {
size int64
gmailID string
date string // retrieved from message header
snippet string
}
// gmailMain is an example that demonstrates calling the Gmail API.
// It iterates over all messages of a user that are larger
// than 5MB, sorts them by size, and then interactively asks the user to
// choose either to Delete, Skip, or Quit for each message.
//
// Example usage:
// go build -o go-api-demo *.go
// go-api-demo -clientid="my-clientid" -secret="my-secret" gmail
func gmailMain(client *http.Client, argv []string) {
if len(argv) != 0 {
fmt.Fprintln(os.Stderr, "Usage: gmail")
return
}
svc, err := gmail.New(client)
if err != nil {
log.Fatalf("Unable to create Gmail service: %v", err)
}
var total int64
msgs := []message{}
pageToken := ""
for {
req := svc.Users.Messages.List("me").Q("larger:5M")
if pageToken != "" {
req.PageToken(pageToken)
}
r, err := req.Do()
if err != nil {
log.Fatalf("Unable to retrieve messages: %v", err)
}
log.Printf("Processing %v messages...\n", len(r.Messages))
for _, m := range r.Messages {
msg, err := svc.Users.Messages.Get("me", m.Id).Do()
if err != nil {
log.Fatalf("Unable to retrieve message %v: %v", m.Id, err)
}
total += msg.SizeEstimate
date := ""
for _, h := range msg.Payload.Headers {
if h.Name == "Date" {
date = h.Value
break
}
}
msgs = append(msgs, message{
size: msg.SizeEstimate,
gmailID: msg.Id,
date: date,
snippet: msg.Snippet,
})
}
if r.NextPageToken == "" {
break
}
pageToken = r.NextPageToken
}
log.Printf("total: %v\n", total)
sortBySize(msgs)
reader := bufio.NewReader(os.Stdin)
count, deleted := 0, 0
for _, m := range msgs {
count++
fmt.Printf("\nMessage URL: https://mail.google.com/mail/u/0/#all/%v\n", m.gmailID)
fmt.Printf("Size: %v, Date: %v, Snippet: %q\n", m.size, m.date, m.snippet)
fmt.Printf("Options: (d)elete, (s)kip, (q)uit: [s] ")
val := ""
if val, err = reader.ReadString('\n'); err != nil {
log.Fatalf("unable to scan input: %v", err)
}
val = strings.TrimSpace(val)
switch val {
case "d": // delete message
if err := svc.Users.Messages.Delete("me", m.gmailID).Do(); err != nil {
log.Fatalf("unable to delete message %v: %v", m.gmailID, err)
}
log.Printf("Deleted message %v.\n", m.gmailID)
deleted++
case "q": // quit
log.Printf("Done. %v messages processed, %v deleted\n", count, deleted)
os.Exit(0)
default:
}
}
}
type messageSorter struct {
msg []message
less func(i, j message) bool
}
func sortBySize(msg []message) {
sort.Sort(messageSorter{msg, func(i, j message) bool {
return i.size > j.size
}})
}
func (s messageSorter) Len() int {
return len(s.msg)
}
func (s messageSorter) Swap(i, j int) {
s.msg[i], s.msg[j] = s.msg[j], s.msg[i]
}
func (s messageSorter) Less(i, j int) bool {
return s.less(s.msg[i], s.msg[j])
}
|