Spitfire/Search
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Merge pull request 'work' (#5) from work into main

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Reviewed-on: #5
This commit is contained in:
Internet Addict 2024-06-15 23:11:35 +00:00
commit 0170f5075a
14 changed files with 336 additions and 166 deletions
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26
README.md
View file

@ -20,15 +20,28 @@
- [ ] Better name
- [ ] LXC container
- [ ] Docker container
- [ ] Automatic updates
- [ ] Scalable crawlers and webservers + load balacing
# Go Search Engine
# Ocásek (Warp) Search Engine
A self-hosted [metasearch engine](https://en.wikipedia.org/wiki/Metasearch_engine) that respects privacy, contains no ads, and serves as a proxy/alternative to Google website.
A self-hosted private and anonymous [metasearch engine](https://en.wikipedia.org/wiki/Metasearch_engine), that aims to be more resource effichent and scalable. Decentralized services are nice, but juming between instances when one just stops working for some reason is just inconvenient. So thats why this engine can do both, you can self-hoste it or use [officiall instance](https://search.spitfirebrowser.com/).
## Comparison to other search engines
| Name | Works without JS | Privacy frontend redirect | Torrent results | API | No 3rd party libs | Scalable | Not Resource Hungry | Dynamic Page Loading |
|------------|----------------------|---------------------------|-----------------|-----|-------------------|----------|---------------------------------------------|----------------------|
| Whoogle | ✅ | ❓ Only host can set it | ❌ | ❌ | ❌ | ❌ | ❓ Moderate | ❓ Not specified |
| Araa-Search| ❌ | ✅ | ✅ | ✅ | ❓ | ❌ | ❌ Very resource hungry | ❌ |
| LibreY | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | ❓ Moderate | ❌ |
| Ocásek | ✅ | ✅ | ✅ | ❌ | ✅ [1] | ✅ | ✅ about 20MiB at idle, 21MiB when searching| ✅ |
[1]: It does not rely on 3rd-party libs for webscraping like [Selenium](https://www.javatpoint.com/selenium-webdriver), but it uses other search instalces like LibreX as fallback.
## Features
- Text search using Google search results.
- Image search using the Qwant API.
- Text search using Google, Brave, DuckDuckGo and LibreX/Y search results.
- Image search using the Qwant/Imgur.
- Video search using Piped API.
- Image viewing using proxy and direct links to image source pages for image searches.
- Maps using OpenStreetMap
@ -39,7 +52,8 @@ A self-hosted [metasearch engine](https://en.wikipedia.org/wiki/Metasearch_engin
### Prerequisites
- Go (version 1.18 or higher recommended)
- Access to the internet for fetching results from the Qwant API and Google
- Git (unexpected)
- Access to the internet for fetching results (even more unexpected)
### Running the Application
@ -49,3 +63,5 @@ cd Search
chmod +x ./run.sh
./run.sh
```
*Its that easy!*

9
common.go
View file

@ -6,7 +6,7 @@ import (
var (
debugMode bool = true
funcs = template.FuncMap{
funcs = template.FuncMap{
"sub": func(a, b int) int {
return a - b
},
@ -15,10 +15,3 @@ var (
},
}
)
func max(a, b int) int {
if a > b {
return a
}
return b
}

18
images-imgur.go
View file

@ -6,28 +6,31 @@ import (
"net/url"
"strconv"
"strings"
"time"
"github.com/PuerkitoBio/goquery"
)
// PerformImgurImageSearch performs an image search on Imgur and returns the results
func PerformImgurImageSearch(query, safe, lang string, page int) ([]ImageSearchResult, error) {
func PerformImgurImageSearch(query, safe, lang string, page int) ([]ImageSearchResult, time.Duration, error) {
startTime := time.Now() // Start the timer
var results []ImageSearchResult
searchURL := buildImgurSearchURL(query, page)
resp, err := http.Get(searchURL)
if err != nil {
return nil, fmt.Errorf("making request: %v", err)
return nil, 0, fmt.Errorf("making request: %v", err)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
return nil, 0, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
}
doc, err := goquery.NewDocumentFromReader(resp.Body)
if err != nil {
return nil, fmt.Errorf("loading HTML document: %v", err)
return nil, 0, fmt.Errorf("loading HTML document: %v", err)
}
doc.Find("div.cards div.post").Each(func(i int, s *goquery.Selection) {
@ -72,7 +75,9 @@ func PerformImgurImageSearch(query, safe, lang string, page int) ([]ImageSearchR
})
})
return results, nil
duration := time.Since(startTime) // Calculate the duration
return results, duration, nil
}
// scrapeImageFromImgurPage scrapes the image source from the Imgur page
@ -130,12 +135,13 @@ func buildImgurSearchURL(query string, page int) string {
}
// func main() {
// results, err := PerformImgurImageSearch("cats", "true", "en", 1)
// results, duration, err := PerformImgurImageSearch("cats", "true", "en", 1)
// if err != nil {
// fmt.Println("Error:", err)
// return
// }
// fmt.Printf("Search took: %v\n", duration)
// for _, result := range results {
// fmt.Printf("Title: %s\nSource: %s\nMedia: %s\nThumbnail: %s\nThumbProxy: %s\nWidth: %d\nHeight: %d\n\n",
// result.Title, result.Source, result.Media, result.Thumbnail, result.ThumbProxy, result.Width, result.Height)

18
images-quant.go
View file

@ -25,7 +25,9 @@ type QwantAPIResponse struct {
}
// PerformQwantImageSearch performs an image search on Qwant and returns the results.
func PerformQwantImageSearch(query, safe, lang string, page int) ([]ImageSearchResult, error) {
func PerformQwantImageSearch(query, safe, lang string, page int) ([]ImageSearchResult, time.Duration, error) {
startTime := time.Now() // Start the timer
const resultsPerPage = 50
var offset int
if page <= 1 {
@ -53,29 +55,29 @@ func PerformQwantImageSearch(query, safe, lang string, page int) ([]ImageSearchR
req, err := http.NewRequest("GET", apiURL, nil)
if err != nil {
return nil, fmt.Errorf("creating request: %v", err)
return nil, 0, fmt.Errorf("creating request: %v", err)
}
ImageUserAgent, err := GetUserAgent("Image-Search")
if err != nil {
return nil, err
return nil, 0, err
}
req.Header.Set("User-Agent", ImageUserAgent)
resp, err := client.Do(req)
if err != nil {
return nil, fmt.Errorf("making request: %v", err)
return nil, 0, fmt.Errorf("making request: %v", err)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
return nil, 0, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
}
var apiResp QwantAPIResponse
if err := json.NewDecoder(resp.Body).Decode(&apiResp); err != nil {
return nil, fmt.Errorf("decoding response: %v", err)
return nil, 0, fmt.Errorf("decoding response: %v", err)
}
var results []ImageSearchResult
@ -91,5 +93,7 @@ func PerformQwantImageSearch(query, safe, lang string, page int) ([]ImageSearchR
})
}
return results, nil
duration := time.Since(startTime) // Calculate the duration
return results, duration, nil
}

72
images.go
View file

@ -4,30 +4,17 @@ import (
"fmt"
"html/template"
"log"
"math/rand"
"net/http"
"sync"
"time"
)
var (
imageEngines []imageEngine
imageEngineLock sync.Mutex
)
type imageEngine struct {
Name string
Func func(string, string, string, int) ([]ImageSearchResult, error)
Weight int
}
var imageSearchEngines []SearchEngine
func init() {
imageEngines = []imageEngine{
{Name: "Qwant", Func: PerformQwantImageSearch, Weight: 1},
{Name: "Imgur", Func: PerformImgurImageSearch, Weight: 2},
imageSearchEngines = []SearchEngine{
{Name: "Qwant", Func: wrapImageSearchFunc(PerformQwantImageSearch), Weight: 1},
{Name: "Imgur", Func: wrapImageSearchFunc(PerformImgurImageSearch), Weight: 2},
}
rand.Seed(time.Now().UnixNano())
}
func handleImageSearch(w http.ResponseWriter, query, safe, lang string, page int) {
@ -110,50 +97,45 @@ func getImageResultsFromCacheOrFetch(cacheKey CacheKey, query, safe, lang string
func fetchImageResults(query, safe, lang string, page int) []ImageSearchResult {
var results []ImageSearchResult
var err error
for attempts := 0; attempts < len(imageEngines); attempts++ {
engine := selectImageEngine()
for _, engine := range imageSearchEngines {
log.Printf("Using image search engine: %s", engine.Name)
results, err = engine.Func(query, safe, lang, page)
searchResults, duration, err := engine.Func(query, safe, lang, page)
updateEngineMetrics(&engine, duration, err == nil)
if err != nil {
log.Printf("Error performing image search with %s: %v", engine.Name, err)
continue
}
for _, result := range searchResults {
results = append(results, result.(ImageSearchResult))
}
// If results are found, break out of the loop
if len(results) > 0 {
break
}
}
// If no results found after trying all engines
if len(results) == 0 {
log.Printf("No image results found for query: %s", query)
}
return results
}
func selectImageEngine() imageEngine {
imageEngineLock.Lock()
defer imageEngineLock.Unlock()
totalWeight := 0
for _, engine := range imageEngines {
totalWeight += engine.Weight
}
randValue := rand.Intn(totalWeight)
for _, engine := range imageEngines {
if randValue < engine.Weight {
// Adjust weights for load balancing
for i := range imageEngines {
if imageEngines[i].Name == engine.Name {
imageEngines[i].Weight = max(1, imageEngines[i].Weight-1)
} else {
imageEngines[i].Weight++
}
}
return engine
func wrapImageSearchFunc(f func(string, string, string, int) ([]ImageSearchResult, time.Duration, error)) func(string, string, string, int) ([]SearchResult, time.Duration, error) {
return func(query, safe, lang string, page int) ([]SearchResult, time.Duration, error) {
imageResults, duration, err := f(query, safe, lang, page)
if err != nil {
return nil, duration, err
}
randValue -= engine.Weight
searchResults := make([]SearchResult, len(imageResults))
for i, result := range imageResults {
searchResults[i] = result
}
return searchResults, duration, nil
}
return imageEngines[0] // fallback to the first engine
}

8
run.sh
View file

@ -1,3 +1,7 @@
#!/bin/bash
#!/bin/sh
go run main.go common.go init.go open-search.go images.go imageproxy.go images-quant.go images-imgur.go video.go map.go text.go text-searchxng.go text-librex.go text-google.go cache.go forums.go files.go files-torrentgalaxy.go files-thepiratebay.go agent.go
# Find all .go files in the current directory
GO_FILES=$(find . -name '*.go' -print)
# Run the Go program
go run $GO_FILES

90
search-engine.go Normal file
View file

@ -0,0 +1,90 @@
package main
import (
"math/rand"
"sync"
"time"
)
var (
searchEngineLock sync.Mutex
)
// SearchEngine struct now includes metrics for calculating reputation.
type SearchEngine struct {
Name string
Func func(string, string, string, int) ([]SearchResult, time.Duration, error)
Weight int
TotalRequests int
TotalTime time.Duration
SuccessfulSearches int
FailedSearches int
}
// init function seeds the random number generator.
func init() {
rand.Seed(time.Now().UnixNano())
}
// Selects a search engine based on weighted random selection with dynamic weighting.
func selectSearchEngine(engines []SearchEngine) SearchEngine {
searchEngineLock.Lock()
defer searchEngineLock.Unlock()
// Recalculate weights based on average response time and success rate.
for i := range engines {
engines[i].Weight = calculateReputation(engines[i])
}
totalWeight := 0
for _, engine := range engines {
totalWeight += engine.Weight
}
randValue := rand.Intn(totalWeight)
for _, engine := range engines {
if randValue < engine.Weight {
return engine
}
randValue -= engine.Weight
}
return engines[0] // fallback to the first engine
}
// Updates the engine's performance metrics.
func updateEngineMetrics(engine *SearchEngine, responseTime time.Duration, success bool) {
searchEngineLock.Lock()
defer searchEngineLock.Unlock()
engine.TotalRequests++
engine.TotalTime += responseTime
if success {
engine.SuccessfulSearches++
} else {
engine.FailedSearches++
}
engine.Weight = calculateReputation(*engine)
}
// Calculates the reputation of the search engine based on average response time and success rate.
func calculateReputation(engine SearchEngine) int {
const referenceTime = time.Second // 1 second reference time in nanoseconds (1000 ms)
if engine.TotalRequests == 0 {
return 10 // Default weight for new engines
}
// Calculate average response time in seconds.
avgResponseTime := engine.TotalTime.Seconds() / float64(engine.TotalRequests)
// Calculate success rate.
successRate := float64(engine.SuccessfulSearches) / float64(engine.TotalRequests)
// Combine response time and success rate into a single reputation score.
// The formula can be adjusted to weigh response time and success rate differently.
reputation := (referenceTime.Seconds() / avgResponseTime) * successRate
// Scale reputation for better interpretability (e.g., multiply by 10)
return int(reputation * 10)
}

2
templates/settings.html
View file

@ -47,7 +47,7 @@
</form>
<div class="results_settings">
<form>
<h1>Settings</h1>
<h1>SETTINGS ARE NOT IMPLEMENTED YET</h1>
<h2>Theme</h2>
<label for="theme-dark">Dark Theme:</label>
<input type="checkbox" class="results-settings" id="theme-dark" name="theme" value="dark"><br>

27
templates/text.html
View file

@ -67,8 +67,10 @@
</div>
<br>
{{end}}
{{else}}
{{else if .NoResults}}
<div class="no-results">No results found for '{{ .Query }}'. Try different keywords.</div>
{{else}}
<div class="no-more-results">Looks like this is the end of results.</div>
{{end}}
</div>
<div class="prev-next prev-img" id="prev-next">
@ -84,26 +86,39 @@
</form>
</div>
<script>
document.getElementById('content').classList.remove('js-enabled');
document.addEventListener("DOMContentLoaded", function() {
if (document.getElementById('prev-next')) {
document.getElementById('prev-next').style.display = 'none';
let page = {{ .Page }};
const query = "{{ .Query }}";
let loading = false;
let hasMoreResults = true;
function loadResults(newPage) {
if (loading || !hasMoreResults) return;
loading = true;
fetch(`/search?q=${encodeURIComponent(query)}&t=text&p=${newPage}`)
.then(response => response.text())
.then(data => {
const parser = new DOMParser();
const doc = parser.parseFromString(data, 'text/html');
const newResults = doc.getElementById('results').innerHTML;
document.getElementById('results').innerHTML += newResults;
page = newPage;
const noResultsMessage = "No results found for '{{ .Query }}'. Try different keywords.";
if (newResults.includes(noResultsMessage)) {
document.getElementById('results').innerHTML += "<div class='no-more-results'>Looks like this is the end of results.</div>";
hasMoreResults = false;
} else {
document.getElementById('results').innerHTML += newResults;
page = newPage;
}
loading = false;
})
.catch(error => console.error('Error loading results:', error));
.catch(error => {
console.error('Error loading results:', error);
loading = false;
});
}
window.addEventListener('scroll', () => {

78
text-brave.go Normal file
View file

@ -0,0 +1,78 @@
package main
import (
"fmt"
"io/ioutil"
"net/http"
"net/url"
"strings"
"time"
"github.com/PuerkitoBio/goquery"
)
// PerformBraveTextSearch performs a text search on Brave and returns the results.
func PerformBraveTextSearch(query, safe, lang string, offset int) ([]TextSearchResult, time.Duration, error) {
startTime := time.Now() // Start the timer
var results []TextSearchResult
// Build the search URL
searchURL := fmt.Sprintf("https://search.brave.com/search?q=%s&offset=%d", url.QueryEscape(query), offset)
req, err := http.NewRequest("GET", searchURL, nil)
if err != nil {
return nil, 0, fmt.Errorf("creating request: %v", err)
}
// Set headers including User-Agent
TextUserAgent, err := GetUserAgent("Text-Search")
if err != nil {
return nil, 0, err
}
req.Header.Set("User-Agent", TextUserAgent)
// Perform the HTTP request
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
return nil, 0, fmt.Errorf("performing request: %v", err)
}
defer resp.Body.Close()
// Read the response body
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, 0, fmt.Errorf("reading response body: %v", err)
}
// Parse the response body
doc, err := goquery.NewDocumentFromReader(strings.NewReader(string(body)))
if err != nil {
return nil, 0, fmt.Errorf("parsing response body: %v", err)
}
// Extract search results
doc.Find(".snippet").Each(func(i int, s *goquery.Selection) {
title := s.Find(".title").Text()
description := s.Find(".snippet-description").Text()
url, exists := s.Find("a").Attr("href")
// Add to results only if all components are present
if title != "" && description != "" && exists && url != "" {
results = append(results, TextSearchResult{
Header: title,
URL: url,
Description: description,
})
}
})
duration := time.Since(startTime) // Calculate the duration
// Return an error if no results are found
if len(results) == 0 {
return nil, duration, fmt.Errorf("no results found")
}
return results, duration, nil
}

20
text-duckduckgo.go
View file

@ -1,33 +1,34 @@
// text-duckduckgo.go
package main
import (
"fmt"
"log"
"net/http"
"net/url"
"strings"
"time"
"github.com/PuerkitoBio/goquery"
)
func PerformDuckDuckGoTextSearch(query, safe, lang string, page int) ([]TextSearchResult, error) {
func PerformDuckDuckGoTextSearch(query, safe, lang string, page int) ([]TextSearchResult, time.Duration, error) {
startTime := time.Now() // Start the timer
var results []TextSearchResult
searchURL := buildDuckDuckGoSearchURL(query, page)
resp, err := http.Get(searchURL)
if err != nil {
return nil, fmt.Errorf("making request: %v", err)
return nil, 0, fmt.Errorf("making request: %v", err)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
return nil, 0, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
}
doc, err := goquery.NewDocumentFromReader(resp.Body)
if err != nil {
return nil, fmt.Errorf("loading HTML document: %v", err)
return nil, 0, fmt.Errorf("loading HTML document: %v", err)
}
doc.Find(".result__body").Each(func(i int, s *goquery.Selection) {
@ -46,15 +47,14 @@ func PerformDuckDuckGoTextSearch(query, safe, lang string, page int) ([]TextSear
Description: strings.TrimSpace(description),
}
results = append(results, result)
if debugMode {
log.Printf("Processed DuckDuckGo result: %+v\n", result)
}
}
}
}
})
return results, nil
duration := time.Since(startTime) // Calculate the duration
return results, duration, nil
}
func buildDuckDuckGoSearchURL(query string, page int) string {

27
text-google.go
View file

@ -6,59 +6,59 @@ import (
"net/http"
"net/url"
"strings"
"time"
"github.com/PuerkitoBio/goquery"
)
func PerformGoogleTextSearch(query, safe, lang string, page int) ([]TextSearchResult, error) {
func PerformGoogleTextSearch(query, safe, lang string, page int) ([]TextSearchResult, time.Duration, error) {
const resultsPerPage = 10
var results []TextSearchResult
startTime := time.Now() // Start the timer
client := &http.Client{}
searchURL := buildSearchURL(query, safe, lang, page, resultsPerPage)
req, err := http.NewRequest("GET", searchURL, nil)
if err != nil {
return nil, fmt.Errorf("failed to create request: %v", err)
return nil, 0, fmt.Errorf("failed to create request: %v", err)
}
// User Agent generation
TextUserAgent, err := GetUserAgent("Text-Search")
if err != nil {
fmt.Println("Error:", err)
return nil, err
}
if debugMode {
fmt.Println("Generated User Agent (text):", TextUserAgent)
return nil, 0, err
}
req.Header.Set("User-Agent", TextUserAgent)
resp, err := client.Do(req)
if err != nil {
return nil, fmt.Errorf("making request: %v", err)
return nil, 0, fmt.Errorf("making request: %v", err)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
return nil, 0, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
}
doc, err := goquery.NewDocumentFromReader(resp.Body)
if err != nil {
return nil, fmt.Errorf("loading HTML document: %v", err)
return nil, 0, fmt.Errorf("loading HTML document: %v", err)
}
results = parseResults(doc)
duration := time.Since(startTime) // Calculate the duration
if len(results) == 0 {
if debugMode {
log.Println("No results found from Google")
}
}
return results, nil
return results, duration, nil
}
func buildSearchURL(query, safe, lang string, page, resultsPerPage int) string {
@ -104,9 +104,6 @@ func parseResults(doc *goquery.Document) []TextSearchResult {
Description: description,
}
results = append(results, result)
if debugMode {
log.Printf("Google result: %+v\n", result)
}
})
return results

27
text-librex.go
View file

@ -6,6 +6,7 @@ import (
"log"
"net/http"
"net/url"
"time"
)
const LIBREX_DOMAIN = "librex.antopie.org"
@ -18,7 +19,8 @@ type LibreXResult struct {
type LibreXResponse []LibreXResult
func PerformLibreXTextSearch(query, safe, lang string, page int) ([]TextSearchResult, error) {
func PerformLibreXTextSearch(query, safe, lang string, page int) ([]TextSearchResult, time.Duration, error) {
startTime := time.Now() // Start the timer
// LibreX/Y uses offset instead of page that starts at 0
page--
@ -29,33 +31,29 @@ func PerformLibreXTextSearch(query, safe, lang string, page int) ([]TextSearchRe
// User Agent generation
userAgent, err := GetUserAgent("librex-text-search")
if err != nil {
return nil, err
}
if debugMode {
log.Println("Generated User Agent (text):", userAgent)
return nil, 0, err
}
req, err := http.NewRequest("GET", searchURL, nil)
if err != nil {
return nil, err
return nil, 0, err
}
req.Header.Set("User-Agent", userAgent)
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
return nil, logError("error making request to LibreX", err)
return nil, 0, logError("error making request to LibreX", err)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, logError("unexpected status code", fmt.Errorf("%d", resp.StatusCode))
return nil, 0, logError("unexpected status code", fmt.Errorf("%d", resp.StatusCode))
}
var librexResp LibreXResponse
if err := json.NewDecoder(resp.Body).Decode(&librexResp); err != nil {
return nil, logError("error decoding LibreX response", err)
return nil, 0, logError("error decoding LibreX response", err)
}
var results []TextSearchResult
@ -70,9 +68,16 @@ func PerformLibreXTextSearch(query, safe, lang string, page int) ([]TextSearchRe
results = append(results, result)
}
return results, nil
duration := time.Since(startTime) // Calculate the duration
if len(results) == 0 {
return nil, duration, fmt.Errorf("no results found")
}
return results, duration, nil
}
// This is just stupid it will probbably lead to printing error twice
func logError(message string, err error) error {
log.Printf("%s: %v", message, err)
return fmt.Errorf("%s: %w", message, err)

74
text.go
View file

@ -4,32 +4,20 @@ import (
"fmt"
"html/template"
"log"
"math/rand"
"net/http"
"sync"
"time"
)
var (
searchEngines []searchEngine
searchEngineLock sync.Mutex
)
type searchEngine struct {
Name string
Func func(string, string, string, int) ([]TextSearchResult, error)
Weight int
}
var textSearchEngines []SearchEngine
func init() {
searchEngines = []searchEngine{
{Name: "Google", Func: PerformGoogleTextSearch, Weight: 1},
{Name: "LibreX", Func: PerformLibreXTextSearch, Weight: 2},
// {Name: "DuckDuckGo", Func: PerformDuckDuckGoTextSearch, Weight: 3}, // DuckDuckGo timeouts too fast and search results are trash
// {Name: "SearXNG", Func: PerformSearXNGTextSearch, Weight: 2}, // Uncomment when implemented
textSearchEngines = []SearchEngine{
{Name: "Google", Func: wrapTextSearchFunc(PerformGoogleTextSearch), Weight: 1},
{Name: "LibreX", Func: wrapTextSearchFunc(PerformLibreXTextSearch), Weight: 2},
{Name: "Brave", Func: wrapTextSearchFunc(PerformBraveTextSearch), Weight: 2},
{Name: "DuckDuckGo", Func: wrapTextSearchFunc(PerformDuckDuckGoTextSearch), Weight: 5}, // DuckDuckGo timeouts too fast and search results are trash
// {Name: "SearXNG", Func: wrapTextSearchFunc(PerformSearXNGTextSearch), Weight: 2}, // Uncomment when implemented
}
rand.Seed(time.Now().UnixNano())
}
func HandleTextSearch(w http.ResponseWriter, query, safe, lang string, page int) {
@ -102,18 +90,22 @@ func prefetchPage(query, safe, lang string, page int) {
func fetchTextResults(query, safe, lang string, page int) []TextSearchResult {
var results []TextSearchResult
var err error
for attempts := 0; attempts < len(searchEngines); attempts++ {
engine := selectSearchEngine()
for _, engine := range textSearchEngines {
log.Printf("Using search engine: %s", engine.Name)
results, err = engine.Func(query, safe, lang, page)
searchResults, duration, err := engine.Func(query, safe, lang, page)
updateEngineMetrics(&engine, duration, err == nil)
if err != nil {
log.Printf("Error performing search with %s: %v", engine.Name, err)
continue
}
for _, result := range searchResults {
results = append(results, result.(TextSearchResult))
}
// If results are found, break out of the loop
if len(results) > 0 {
break
}
@ -122,32 +114,18 @@ func fetchTextResults(query, safe, lang string, page int) []TextSearchResult {
return results
}
func selectSearchEngine() searchEngine {
searchEngineLock.Lock()
defer searchEngineLock.Unlock()
totalWeight := 0
for _, engine := range searchEngines {
totalWeight += engine.Weight
}
randValue := rand.Intn(totalWeight)
for _, engine := range searchEngines {
if randValue < engine.Weight {
// Adjust weights for load balancing
for i := range searchEngines {
if searchEngines[i].Name == engine.Name {
searchEngines[i].Weight = max(1, searchEngines[i].Weight-1)
} else {
searchEngines[i].Weight++
}
}
return engine
func wrapTextSearchFunc(f func(string, string, string, int) ([]TextSearchResult, time.Duration, error)) func(string, string, string, int) ([]SearchResult, time.Duration, error) {
return func(query, safe, lang string, page int) ([]SearchResult, time.Duration, error) {
textResults, duration, err := f(query, safe, lang, page)
if err != nil {
return nil, duration, err
}
randValue -= engine.Weight
searchResults := make([]SearchResult, len(textResults))
for i, result := range textResults {
searchResults[i] = result
}
return searchResults, duration, nil
}
return searchEngines[0] // fallback to the first engine
}
func displayResults(w http.ResponseWriter, results []TextSearchResult, query, lang string, elapsed float64, page int, hasPrevPage, hasNextPage bool) {
@ -177,6 +155,7 @@ func displayResults(w http.ResponseWriter, results []TextSearchResult, query, la
HasNextPage bool
LanguageOptions []LanguageOption
CurrentLang string
NoResults bool
}{
Results: results,
Query: query,
@ -186,6 +165,7 @@ func displayResults(w http.ResponseWriter, results []TextSearchResult, query, la
HasNextPage: hasNextPage,
LanguageOptions: languageOptions,
CurrentLang: lang,
NoResults: len(results) == 0,
}
err = tmpl.Execute(w, data)