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searchengines.go
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/
searchengines.go
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package main
import (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"regexp"
"strconv"
"strings"
"github.com/Tensai75/nzb-monkey-go/nzbparser"
)
// search engine structure
type SearchEngine struct {
name string
searchURL string
downloadURL string
regexString string
jsonPath string
groupNo int
search func(engine SearchEngine) (*nzbparser.Nzb, error)
}
// search engines map
type SearchEngines map[string]SearchEngine
// global searchEngines map
var searchEngines = SearchEngines{
"nzbindex": SearchEngine{
name: "NZBIndex",
searchURL: "https://nzbindex.com/search/json?sort=agedesc&hidespam=1&q=%s",
downloadURL: "https://nzbindex.com/download/%s/",
jsonPath: "results.0.id",
search: jsonSearch,
},
"nzbking": SearchEngine{
name: "NZBKing",
searchURL: "https://nzbking.com/?q=%s",
downloadURL: "https://nzbking.com/nzb:%s/",
regexString: `href="\/nzb:(.+?)\/"`,
groupNo: 1,
search: htmlSearch,
},
"binsearch": SearchEngine{
name: "Binsearch (most popular groups)",
searchURL: "https://binsearch.info/?max=100&adv_age=1100&q=%s",
downloadURL: "https://binsearch.info/?action=nzb&%s=1",
regexString: `name="(\d{9,})"`,
groupNo: 1,
search: htmlSearch,
},
"binsearch_alternative": SearchEngine{
name: "Binsearch (other groups)",
searchURL: "https://binsearch.info/?max=100&adv_age=1100&server=2&q=%s",
downloadURL: "https://binsearch.info/?action=nzb&%s=1&server=2",
regexString: `name="(\d{9,})"`,
groupNo: 1,
search: htmlSearch,
},
"directsearch": SearchEngine{
name: "NZB direct search",
search: nzbdirectsearch,
},
}
// default search function for html response
func htmlSearch(engine SearchEngine) (*nzbparser.Nzb, error) {
var err error
var body string
var searchRegexp *regexp.Regexp
var match []string
if body, err = loadURL(fmt.Sprintf(engine.searchURL, args.Header)); err == nil {
if searchRegexp, err = regexp.Compile(engine.regexString); err == nil {
if match = searchRegexp.FindStringSubmatch(body); match != nil {
if len(match) >= engine.groupNo+1 {
if body, err = loadURL(fmt.Sprintf(engine.downloadURL, match[engine.groupNo])); err == nil {
if nzb, err := nzbparser.ParseString(body); err != nil {
return nil, err
} else {
return nzb, nil
}
}
}
} else {
return nil, fmt.Errorf("No results found")
}
}
}
return nil, err
}
// default search function for json response
func jsonSearch(engine SearchEngine) (*nzbparser.Nzb, error) {
var err error
var body string
var result interface{}
var value string
if body, err = loadURL(fmt.Sprintf(engine.searchURL, args.Header)); err == nil {
if err = json.Unmarshal([]byte(body), &result); err == nil {
for _, value := range strings.Split(engine.jsonPath, ".") {
if number, err := strconv.Atoi(value); err == nil {
if len(result.([]interface{})) > number {
result = result.([]interface{})[number]
} else {
return nil, fmt.Errorf("No results found")
}
} else {
if _, ok := result.(map[string]interface{})[value]; ok {
result = result.(map[string]interface{})[value]
} else {
return nil, fmt.Errorf("No results found")
}
}
}
if fmt.Sprintf("%T", result) == "float64" {
value = fmt.Sprintf("%d", int(result.(float64)))
} else if fmt.Sprintf("%T", result) == "string" {
value = fmt.Sprintf("%s", result.(string))
} else {
return nil, fmt.Errorf("No results found")
}
if body, err = loadURL(fmt.Sprintf(engine.downloadURL, value)); err == nil {
if nzb, err := nzbparser.ParseString(body); err != nil {
return nil, err
} else {
return nzb, nil
}
} else {
return nil, err
}
} else {
return nil, err
}
} else {
return nil, err
}
}
func loadURL(url string) (string, error) {
if resp, err := http.Get(url); err != nil {
return "", err
} else {
defer resp.Body.Close()
if body, err := ioutil.ReadAll(resp.Body); err != nil {
return "", err
} else {
return string(body), nil
}
}
}