-
Notifications
You must be signed in to change notification settings - Fork 2
/
main.go
217 lines (160 loc) · 4.58 KB
/
main.go
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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
package main
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
"os"
"time"
"github.com/joho/godotenv"
)
type NewRaindropBookmark struct {
Url string
Title string
UserId string
}
func stderrHelper(template string, v ...any) {
time := time.Now().Local()
timeS := fmt.Sprintf(
"%v/%v/%v %v:%v:%v",
time.Year(),
int(time.Month()),
time.Day(), time.Hour(),
time.Minute(),
time.Second())
s := fmt.Sprintf(template, v...)
fmt.Fprintf(os.Stderr, "%v\t%v", timeS, s)
}
func main() {
godotenv.Load(".env")
if os.Getenv("RAINDROP_TOKEN") == "" {
panic("RAINDROP_TOKEN env variable is empty!")
}
if os.Getenv("OMNIVORE_USERID") == "" {
stderrHelper("Warning: OMNIVORE_USERID variable is empty! All requests will be rejected.\n")
}
srv := http.Server{
Addr: ":8080",
Handler: nil,
}
omniResponse := make(chan []byte)
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { handle(w, r, omniResponse) })
//TODO: add graceful shutdown logic
go func() { srv.ListenAndServe() }()
fmt.Printf("Server started successfully\nWaiting for requests...\n")
for {
data, err := parseOmnivoreResponse(<-omniResponse)
if err != nil {
stderrHelper("Parse Error: %v\n", err.Error())
continue
}
if data.UserId != os.Getenv("OMNIVORE_USERID") {
stderrHelper("Rejecting request from invalid userId %q\n", data.UserId)
continue
}
stderrHelper("Received %q\n", data.Url)
valid, err := checkRaindropExists(data.Url)
if err != nil {
stderrHelper("Raindrop Check Response: %v\n", err.Error())
continue
}
if valid {
err := createRaindrop(&data)
if err != nil {
stderrHelper("Create Raindrop Response: %v\n", err.Error())
continue
}
} else {
stderrHelper("Bookmark already in Raindrop.io bookmarks\n")
continue
}
stderrHelper("Successfully created Raindrop.io bookmark\n")
}
}
// handles the request and sends the request body through ch channel
func handle(w http.ResponseWriter, req *http.Request, ch chan []byte) {
bytes, err := io.ReadAll(req.Body)
if err != nil {
fmt.Fprint(os.Stderr, err)
return
}
ch <- bytes
w.WriteHeader(http.StatusOK)
}
func parseOmnivoreResponse(omniBody []byte) (NewRaindropBookmark, error) {
// init anonymous struct to unmarshal json body
data := struct {
UserId string `json:"userID"`
Page struct {
Url string `json:"originalUrl"`
Title string
}
}{}
err := json.Unmarshal(omniBody, &data)
if err != nil {
return NewRaindropBookmark{}, err
}
return NewRaindropBookmark{
Url: data.Page.Url,
Title: data.Page.Title,
UserId: data.UserId,
}, nil
}
func createRaindrop(bookmark *NewRaindropBookmark) error {
endpoint := "https://api.raindrop.io/rest/v1/raindrop"
body := fmt.Sprintf(`
{
"link": "%v",
"title": "%v",
"pleaseParse": {}
}`, bookmark.Url, bookmark.Title)
req, err := http.NewRequest("POST", endpoint, bytes.NewReader([]byte(body)))
defer req.Body.Close()
if err != nil {
return err
}
req.Header.Add("Authorization", fmt.Sprintf("Bearer %v", os.Getenv("RAINDROP_TOKEN")))
req.Header.Add("Content-Type", "application/json")
res, err := http.DefaultClient.Do(req)
if err != nil {
return err
} else if res.StatusCode != http.StatusOK {
return fmt.Errorf("Unexpected response from Raindrop.io api: %q", res.Status)
}
return nil
}
func checkRaindropExists(targetUrl string) (bool, error) {
endpoint := "https://api.raindrop.io/rest/v1/import/url/exists"
body := struct {
Urls []string `json:"urls"`
}{Urls: []string{targetUrl}}
bodyString, err := json.Marshal(body)
if err != nil {
return false, err
}
token := os.Getenv("RAINDROP_TOKEN")
req, err := http.NewRequest(http.MethodPost, endpoint, bytes.NewReader(bodyString))
defer req.Body.Close()
if err != nil {
return false, err
}
req.Header.Add("Authorization", fmt.Sprintf("Bearer %v", token))
req.Header.Add("Content-Type", "application/json")
resp, err := http.DefaultClient.Do(req)
if err != nil {
return false, err
} else if resp.StatusCode >= 400 {
return false, fmt.Errorf(resp.Status)
}
rawResponse, err := io.ReadAll(resp.Body)
if err != nil {
return false, err
}
responseData := struct{ Result bool }{}
if err := json.Unmarshal(rawResponse, &responseData); err != nil {
return false, err
}
//raindrop api returns false if there *isn't* a duplicate, so we negate this
return !responseData.Result, nil
}