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
|
package main
import (
"encoding/json"
"flag"
"fmt"
"io/ioutil"
"log"
"net/http"
"net/url"
"github.com/go-telegram-bot-api/telegram-bot-api"
)
var flagPort = flag.String("port", "8008", "determined the port the sercice runs on")
var flagTgTokenFile = flag.String("tgtokenfile", "/run/secrets/tg_bot_token", "determines the location of the telegram bot token file")
const cryptocomparePriceURL = "https://min-api.cryptocompare.com/data/price?"
func getTgToken() string {
tgTokenJsonBytes, err := ioutil.ReadFile(*flagTgTokenFile)
if err != nil {
log.Fatal(err)
}
type TgToken struct {
Token string `json:"token"`
}
var tgToken TgToken
err = json.Unmarshal(tgTokenJsonBytes, &tgToken)
if err != nil {
log.Fatal(err)
}
return tgToken.Token
}
func runTgBot() {
botToken := getTgToken()
bot, err := tgbotapi.NewBotAPI(botToken)
if err != nil {
log.Panic(err)
}
bot.Debug = true
log.Printf("Authorized on account %s", bot.Self.UserName)
u := tgbotapi.NewUpdate(0)
u.Timeout = 60
updates, err := bot.GetUpdatesChan(u)
if err != nil {
log.Panic(err)
}
for update := range updates {
if update.Message == nil {
continue
}
log.Printf("[%s] %s", update.Message.From.UserName, update.Message.Text)
msg := tgbotapi.NewMessage(update.Message.Chat.ID, update.Message.Text)
msg.ReplyToMessageID = update.Message.MessageID
bot.Send(msg)
}
}
func sendGetToCryptoCompare(ccurl, name, unit string) (float64, string, error) {
params := "fsym=" + url.QueryEscape(name) + "&" +
"tsyms=" + url.QueryEscape(unit)
path := ccurl + params
fmt.Println(path)
resp, err := http.Get(path)
if err != nil {
log.Fatal(err)
return 0., "", err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Fatal(err)
return 0., "", err
}
jsonBody := make(map[string]float64)
err = json.Unmarshal(body, &jsonBody)
if err != nil {
log.Fatal(err)
return 0., "", err
}
fmt.Println(string(body))
return jsonBody[unit], unit, nil
}
//TODO
func healthHandler(w http.ResponseWriter, r *http.Request) {
}
func cryptoHandler(w http.ResponseWriter, r *http.Request) {
if r.URL.Path != "/crypto" {
http.Error(w, "404 not found.", http.StatusNotFound)
return
}
if r.Method != "GET" {
http.Error(w, "Method is not supported.", http.StatusNotFound)
}
var name string
var unit string
params := r.URL.Query()
for key, value := range params {
switch key {
case "name":
name = value[0]
case "unit":
unit = value[0]
default:
}
}
price, unit, err := sendGetToCryptoCompare(cryptocomparePriceURL, name, unit)
if err != nil {
log.Fatal(err)
}
json.NewEncoder(w).Encode(map[string]interface{}{"name": price, "unit": unit})
}
func startServer() {
http.HandleFunc("/crypto", cryptoHandler)
http.HandleFunc("/health", healthHandler)
if err := http.ListenAndServe(":"+*flagPort, nil); err != nil {
log.Fatal(err)
}
}
func main() {
go runTgBot()
startServer()
}
|
