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
|
package main
import (
"fmt"
"io/ioutil"
"log"
"os"
"time"
"tildegit.org/andinus/cetus/background"
"tildegit.org/andinus/cetus/bpod"
"tildegit.org/andinus/cetus/cache"
"tildegit.org/andinus/cetus/notification"
)
func execBPOD() {
bpodApi := getEnv("BPOD_API", "https://www.bing.com/HPImageArchive.aspx")
// reqInfo holds all the parameters that needs to be sent with
// the request. GetJson() will pack apiKey & date in params
// map before sending it to another function. Adding params
// here will not change the behaviour of the function, changes
// have to be made in GetJson() too.
reqInfo = make(map[string]string)
reqInfo["api"] = bpodApi
if random {
reqInfo["random"] = "true"
}
cacheDir := fmt.Sprintf("%s/%s", cache.GetDir(), "bpod")
os.MkdirAll(cacheDir, os.ModePerm)
body, err = bpod.GetJson(reqInfo)
if err != nil {
err = fmt.Errorf("%s\n%s",
"bpod.go: failed to get json response from api",
err.Error())
log.Fatal(err)
}
if dump {
fmt.Println(body)
}
res, err := bpod.UnmarshalJson(body)
if err != nil {
log.Fatal(err)
}
// Correct format
res.URL = fmt.Sprintf("%s%s", "https://www.bing.com", res.URL)
dt, err := time.Parse("20060102", res.StartDate)
if err != nil {
log.Fatal(err)
}
res.StartDate = dt.Format("2006-01-02")
// Save response in cache after marshalling it again, we do
// this instead of saving the response so as to not break the
// format in which cache is saved. If random flag was passed
// then the response will contain all 7 values so we have to
// marshal it but why not save non-random directly? Because
// that means the format in which both are saved will be
// different. One will be the raw response whereas other will
// be marshalled response. We're currently not using this body
// cache but this is just to save information.
file := fmt.Sprintf("%s/%s.json", cacheDir, res.StartDate)
body, err = bpod.MarshalJson(res)
if err != nil {
// We should warn the user if this returns an error
// but the program shouldn't exit.
log.Println("bpod.go: failed to marshal res to body, not saving cache")
} else {
err = ioutil.WriteFile(file, []byte(body), 0644)
// Not being able to write to the cache file is a
// small error and the program shouldn't exit but
// should continue after printing the log so that the
// user can investigate it later.
if err != nil {
err = fmt.Errorf("%s%s\n%s",
"bpod.go: failed to write body to file: ", file,
err.Error())
log.Println(err)
}
}
// Send a desktop notification if notify flag was passed.
if notify {
n := notification.Notif{}
n.Title = res.Title
n.Message = fmt.Sprintf("%s\n\n%s",
res.StartDate,
res.Copyright)
err = n.Notify()
if err != nil {
log.Println(err)
}
}
if print {
fmt.Printf("Title: %s\n\n", res.Title)
fmt.Printf("Copyright: %s\n", res.Copyright)
fmt.Printf("Copyright Link: %s\n", res.CopyrightLink)
fmt.Printf("Date: %s\n\n", res.StartDate)
fmt.Printf("URL: %s\n", res.URL)
}
// Proceed only if the command was set because if it was fetch
// then it's already finished & should exit now.
if os.Args[1] == "fetch" {
os.Exit(0)
}
// Try to set background only if the media type is an image.
// First it downloads the image to the cache directory and
// then tries to set it with feh. If the download fails then
// it exits with a non-zero exit code.
imgFile := fmt.Sprintf("%s/%s", cacheDir, res.Title)
// Check if the file is available locally, if it is then don't
// download it again and set it from disk
if _, err := os.Stat(imgFile); os.IsNotExist(err) {
err = background.Download(imgFile, res.URL)
if err != nil {
log.Fatal(err)
}
} else {
if err != nil {
log.Fatal(err)
}
}
err = background.SetFromFile(imgFile)
if err != nil {
log.Fatal(err)
}
}
|