package main

import (
	"fmt"
	"html/template"
	"log"
	"net/http"
	"strconv"
)

// LanguageOption represents a language option for search
type LanguageOption struct {
	Code string
	Name string
}

var settings UserSettings

var languageOptions = []LanguageOption{
	{Code: "", Name: "Any Language"},
	{Code: "lang_en", Name: "English"},
	{Code: "lang_af", Name: "Afrikaans"},
	{Code: "lang_ar", Name: "العربية (Arabic)"},
	{Code: "lang_hy", Name: "Հայերեն (Armenian)"},
	{Code: "lang_be", Name: "Беларуская (Belarusian)"},
	{Code: "lang_bg", Name: "български (Bulgarian)"},
	{Code: "lang_ca", Name: "Català (Catalan)"},
	{Code: "lang_zh-CN", Name: "中文 (简体) (Chinese Simplified)"},
	{Code: "lang_zh-TW", Name: "中文 (繁體) (Chinese Traditional)"},
	{Code: "lang_hr", Name: "Hrvatski (Croatian)"},
	{Code: "lang_cs", Name: "Čeština (Czech)"},
	{Code: "lang_da", Name: "Dansk (Danish)"},
	{Code: "lang_nl", Name: "Nederlands (Dutch)"},
	{Code: "lang_eo", Name: "Esperanto"},
	{Code: "lang_et", Name: "Eesti (Estonian)"},
	{Code: "lang_tl", Name: "Filipino (Tagalog)"},
	{Code: "lang_fi", Name: "Suomi (Finnish)"},
	{Code: "lang_fr", Name: "Français (French)"},
	{Code: "lang_de", Name: "Deutsch (German)"},
	{Code: "lang_el", Name: "Ελληνικά (Greek)"},
	{Code: "lang_iw", Name: "עברית (Hebrew)"},
	{Code: "lang_hi", Name: "हिन्दी (Hindi)"},
	{Code: "lang_hu", Name: "magyar (Hungarian)"},
	{Code: "lang_is", Name: "íslenska (Icelandic)"},
	{Code: "lang_id", Name: "Bahasa Indonesia (Indonesian)"},
	{Code: "lang_it", Name: "italiano (Italian)"},
	{Code: "lang_ja", Name: "日本語 (Japanese)"},
	{Code: "lang_ko", Name: "한국어 (Korean)"},
	{Code: "lang_lv", Name: "latviešu (Latvian)"},
	{Code: "lang_lt", Name: "lietuvių (Lithuanian)"},
	{Code: "lang_no", Name: "norsk (Norwegian)"},
	{Code: "lang_fa", Name: "فارسی (Persian)"},
	{Code: "lang_pl", Name: "polski (Polish)"},
	{Code: "lang_pt", Name: "português (Portuguese)"},
	{Code: "lang_ro", Name: "română (Romanian)"},
	{Code: "lang_ru", Name: "русский (Russian)"},
	{Code: "lang_sr", Name: "српски (Serbian)"},
	{Code: "lang_sk", Name: "slovenčina (Slovak)"},
	{Code: "lang_sl", Name: "slovenščina (Slovenian)"},
	{Code: "lang_es", Name: "español (Spanish)"},
	{Code: "lang_sw", Name: "Kiswahili (Swahili)"},
	{Code: "lang_sv", Name: "svenska (Swedish)"},
	{Code: "lang_th", Name: "ไทย (Thai)"},
	{Code: "lang_tr", Name: "Türkçe (Turkish)"},
	{Code: "lang_uk", Name: "українська (Ukrainian)"},
	{Code: "lang_vi", Name: "Tiếng Việt (Vietnamese)"},
}

func handleSearch(w http.ResponseWriter, r *http.Request) {
	query, safe, lang, searchType, page := parseSearchParams(r)

	// Load user settings
	settings = loadUserSettings(r)

	// Update the theme, safe search, and language based on query parameters or use existing settings
	theme := r.URL.Query().Get("theme")
	if theme != "" {
		settings.Theme = theme
		saveUserSettings(w, settings)
	} else if settings.Theme == "" {
		settings.Theme = "dark" // Default theme
	}

	if safe != "" {
		settings.SafeSearch = safe
		saveUserSettings(w, settings)
	}

	if lang != "" {
		settings.Language = lang
		saveUserSettings(w, settings)
	}

	// Render the search page template if no query
	if query == "" {
		tmpl := template.Must(template.ParseFiles("templates/search.html"))
		tmpl.Execute(w, settings)
		return
	}

	settings := loadUserSettings(r)

	// Handle search based on the type
	switch searchType {
	case "image":
		handleImageSearch(w, settings, query, page)
	case "video":
		handleVideoSearch(w, settings, query, page)
	case "map":
		handleMapSearch(w, settings, query)
	case "forum":
		handleForumsSearch(w, settings, query, page)
	case "file":
		handleFileSearch(w, settings, query, page)
	case "text":
		fallthrough
	default:
		HandleTextSearch(w, settings, query, page)
	}
}

func parseSearchParams(r *http.Request) (query, safe, lang, searchType string, page int) {
	if r.Method == "GET" {
		query = r.URL.Query().Get("q")
		safe = r.URL.Query().Get("safe")
		lang = r.URL.Query().Get("lang")
		searchType = r.URL.Query().Get("t")
		pageStr := r.URL.Query().Get("p")
		page = parsePageParameter(pageStr)
	} else if r.Method == "POST" {
		query = r.FormValue("q")
		safe = r.FormValue("safe")
		lang = r.FormValue("lang")
		searchType = r.FormValue("t")
		pageStr := r.FormValue("p")
		page = parsePageParameter(pageStr)
	}

	if searchType == "" {
		searchType = "text"
	}

	return
}

func parsePageParameter(pageStr string) int {
	page, err := strconv.Atoi(pageStr)
	if err != nil || page < 1 {
		page = 1
	}
	return page
}

func runServer() {
	http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("static"))))
	http.HandleFunc("/", handleSearch)
	http.HandleFunc("/search", handleSearch)
	http.HandleFunc("/img_proxy", handleImageProxy)
	http.HandleFunc("/node", handleNodeRequest)
	http.HandleFunc("/settings", func(w http.ResponseWriter, r *http.Request) {
		http.ServeFile(w, r, "templates/settings.html")
	})
	http.HandleFunc("/opensearch.xml", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/opensearchdescription+xml")
		http.ServeFile(w, r, "static/opensearch.xml")
	})
	initializeTorrentSites()

	config := loadConfig()
	generateOpenSearchXML(config)

	printMessage("Server is listening on http://localhost:%d", config.Port)
	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", config.Port), nil))

	// Start automatic update checker
	go checkForUpdates()
}