-
Notifications
You must be signed in to change notification settings - Fork 0
/
application.go
146 lines (129 loc) · 4 KB
/
application.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
package collector
import (
"fmt"
"github.com/go-rod/rod"
"github.com/margostino/job-pulse/domain"
"github.com/margostino/job-pulse/utils"
"log"
"os"
"reflect"
"strings"
"time"
)
func (a *App) ValidateInput() {
if len(os.Args) != 3 {
example := "go run ./collector \"engineer\" \"stockholm\""
message := fmt.Sprintf("Missing parameters!\nExample: %s", example)
panic(message)
}
a.inputParams.SearchPosition = os.Args[1]
a.inputParams.SearchLocation = os.Args[2]
}
func (a *App) Start() error {
stats := &domain.Stats{
StartTime: time.Now().UTC(),
PositionInput: a.inputParams.SearchPosition,
LocationInput: a.inputParams.SearchLocation,
}
var index = 0
var isEnd = false
var factor = a.config.App.ScanFactor
var baseUrl = a.config.JobSite.BaseUrl
var documents = make([]interface{}, 0)
var cardInfoSelector = a.config.JobSite.CardInfoSelector
partialUrl := a.getPartialUrlFromJobSite(baseUrl)
for ok := true; ok; ok = !isEnd {
index += factor
fullUrl := utils.IndexFrom(partialUrl, index)
webScrapper := a.scrapper.GoPage(fullUrl)
entries := webScrapper.GetLinkElements()
if len(entries) == 0 {
if a.isTimeModeActive(stats) {
index = 0
a.db.InsertBatch(documents, stats)
documents = make([]interface{}, 0)
} else {
isEnd = true
}
}
for _, entry := range entries {
var sanitizedUrl = a.extractUrlFrom(entry)
card, err := entry.Element(cardInfoSelector)
if err != nil {
log.Println(err.Error())
log.Println(entry.String())
break
} else {
jobText, err := card.Text()
utils.Check(err)
jobText = strings.ToLower(jobText)
jobTextParts := strings.SplitN(jobText, "\n", -1)
if len(jobTextParts) > 0 {
rawPostDate := utils.GetRawPostDateOrDefault(4, jobTextParts)
postDate := calculateJobPostDate(rawPostDate)
jobPost := buildJobPost(jobTextParts, sanitizedUrl, rawPostDate, postDate)
jobPost.Latitude, jobPost.Longitude = a.getGeocoding(jobPost.Location)
result := a.db.GetConditionalDocument(jobPost)
if result != nil {
documents = append(documents, result)
}
}
}
}
}
a.db.InsertBatch(documents, stats)
return nil // TODO tbd
}
func (a *App) Close() {
a.db.Close()
}
func (a *App) getPartialUrlFromJobSite(baseUrl string) string {
params := fmt.Sprintf("?keywords=%s&location=%s", a.inputParams.SearchPosition, a.inputParams.SearchLocation)
return fmt.Sprintf("%s%s", baseUrl, params)
}
func (a *App) isTimeModeActive(stats *domain.Stats) bool {
return a.config.App.TimeMode && timeDurationSince(stats.StartTime) < a.config.App.TimeModeDuration
}
func (a *App) extractUrlFrom(entry *rod.Element) string {
var sanitizedUrl string
var fullCardSelector = a.config.JobSite.FullCardSelector
fullCard, err := entry.Element(fullCardSelector)
if err != nil {
sanitizedUrl = ""
} else {
linkSource, err := fullCard.Property("href")
utils.Check(err)
sanitizedUrl = utils.SanitizeUrl(linkSource.String())
utils.Check(err)
}
return sanitizedUrl
}
// TODO: separate concerns between Geo and DB modules
func (a *App) getGeocoding(location string) (float64, float64) {
var latitude float64
var longitude float64
geocoding, _ := a.db.FindOneGeoBy(location)
// TODO: best effort for location similarity string (e.g. Stockholm == Stockholm, Sweden)
if geocoding == nil {
log.Printf("New geocoding for location: %s", location)
newGeocoding := a.geo.Get(location)
if newGeocoding != nil {
println(fmt.Sprintf("%v", *newGeocoding))
validateGeoResponse(*newGeocoding)
newGeocodingMap := (*newGeocoding).(map[string]interface{})
latitude = newGeocodingMap["latitude"].(float64)
longitude = newGeocodingMap["longitude"].(float64)
a.db.InsertOneGeocoding(location, newGeocoding)
}
} else {
latitude = geocoding["latitude"].(float64)
longitude = geocoding["longitude"].(float64)
}
return latitude, longitude
}
func validateGeoResponse(value interface{}) {
rt := reflect.TypeOf(value)
if rt.Kind() == reflect.Slice {
log.Println("Geocoding response was empty slice")
}
}