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])
}
|
