349 lines
12 KiB
Go
349 lines
12 KiB
Go
// Package main defines the entry point of the Go application.
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package main
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// Importing necessary packages for database interaction, web server functionality, logging, and more.
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import (
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"database/sql"
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"fmt"
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"html/template"
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"io"
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"log"
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"net/http"
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"os"
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"strings"
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"time"
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_ "modernc.org/sqlite" // Importing SQLite driver for database interaction.
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)
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// readHtml function reads an HTML file and applies a CSS template to it before sending it to the client.
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func readHtml(res http.ResponseWriter, req *http.Request) {
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g := template.CSS("./html/public/mod.css") // Define the CSS path.
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f, err := template.ParseFiles("./html/wsb.html") // Parse the HTML file.
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if err != nil {
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log.Println(err) // Log any errors encountered.
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}
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err = f.Execute(res, g) // Execute the template with the CSS and send it to the client.
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if err != nil {
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log.Println(err) // Log any errors encountered.
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}
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}
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// simpRequestResp sends a simple response to the client.
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func simpRequestResp(res http.ResponseWriter, req *http.Request) {
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fmt.Fprint(res, "Hello, M'Lord", 153*4, " I'm here to serveè") // Print a formatted string to the client.
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}
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// getMsgFromDB retrieves a message from the database based on the provided ID and language.
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func getMsgFromDB(sqldb *sql.DB, id string, lang string) string {
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var lngs []string
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lngs = append(lngs, lang) // Append the language to the slice.
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query := generateSQL("msgs", lngs, [2]string{"content", id}) // Generate the SQL query.
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res := sqldb.QueryRow(query) // Execute the query.
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lng := ""
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dt := res.Scan(&lng) // Scan the result into the lng variable.
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if dt != nil {
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return "" // Return an empty string if there's an error.
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}
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return lng // Return the retrieved message.
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}
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// queryPacks retrieves a list of packages from the database.
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func queryPacks(sqldb *sql.DB, element *elements) []packages {
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pkg_list := getPkgIdFromDB(sqldb) // Get the list of package IDs from the database.
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pkgs := make([]packages, 0) // Initialize a slice to hold the packages.
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for _, p := range pkg_list {
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query := generateSQL("packs_all", []string{"*"}, [2]string{"id", p}) // Generate the SQL query for each package.
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res, err := sqldb.Query(query) // Execute the query.
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defer res.Close() // Ensure the result set is closed after the function returns.
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err = res.Err() // Check for any errors during query execution.
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if err != nil {
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log.Panicln(err) // Log and panic on any errors.
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}
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for res.Next() {
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npkg := packages{} // Create a new package instance.
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err := res.Scan(&npkg.Id, &npkg.Name, &npkg.Version, &npkg.ExtraCommand, &npkg.Tag, &npkg.Warning) // Scan the result into the package instance.
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if err != nil {
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log.Fatalln(err) // Log and exit on any errors.
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}
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npkg.Element = element // Associate the element with the package.
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pkgs = append(pkgs, npkg) // Append the package to the slice.
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}
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}
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return pkgs // Return the slice of packages.
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}
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// queryDatabase executes a SQL query expecting a single row and returns the result as a slice of strings.
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// sqldb: The database connection object.
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// queryRow: The SQL query string to be executed.
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// Returns: A slice of strings representing the query result.
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func queryDatabase(sqldb *sql.DB, queryRow string) []string {
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res := sqldb.QueryRow(queryRow)
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var values []string
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err := res.Scan(&values)
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if err != nil {
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log.Println(err)
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}
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return values
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}
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// generateSQL constructs a SQL SELECT statement with optional WHERE clauses.
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// table: The name of the database table.
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// columns: A slice of strings representing the column names to be selected.
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// arg: A variadic slice of string pairs representing WHERE clause conditions.
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// Returns: A string representing the complete SQL SELECT statement.
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func generateSQL(table string, columns []string, arg ...[2]string) string {
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cols := strings.Join(columns, ",")
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table = "SELECT " + cols + " FROM " + table
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if len(arg) > 0 {
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table += " WHERE "
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for i, a := range arg {
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table += a[0] + " like '" + a[1] + "'"
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if i+1 < len(arg) {
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table += " and "
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}
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}
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}
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return table
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}
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// searchDownloads performs a database query to retrieve download statistics.
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// sqldb: The database connection object.
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// table: The name of the database table.
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// columns: A variadic number of strings representing the column names to be selected.
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// Returns: A slice of DownloadElements structs containing the query results.
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func searchDownloads(sqldb *sql.DB, table string, columns ...string) []DownloadElements {
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query := generateSQL(table, columns)
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runquery, err := sqldb.Query(query)
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defer runquery.Close()
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err = runquery.Err()
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if err != nil {
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log.Fatalln(err)
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}
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var elems []DownloadElements
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var e DownloadElements
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for runquery.Next() {
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if len(columns) > 2 {
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err = runquery.Scan(&e.ID, &e.Version, &e.Counter)
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} else {
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err = runquery.Scan(&e.ID, &e.Counter)
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}
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elems = append(elems, e)
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}
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return elems
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}
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// stats creates an HTTP handler that serves a statistics page with data from the database.
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// sqldb: The database connection object.
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// lang: The language code to localize the content.
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// Returns: An http.Handler that serves the statistics page.
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func stats(sqldb *sql.DB, lang string) http.Handler {
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return http.HandlerFunc(func(res http.ResponseWriter, req *http.Request) {
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Counter := struct{
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ElementsData elements
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VersionStats []DownloadElements
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TotalStats []DownloadElements
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BodyClass string
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Lang string
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}{
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ElementsData: elements{
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Title: getMsgFromDB(sqldb, "title", lang),
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Header: getMsgFromDB(sqldb, "header", lang),
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Help: getMsgFromDB(sqldb, "help", lang),
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Packagename: getMsgFromDB(sqldb, "packagename", lang),
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Packageversion: getMsgFromDB(sqldb, "packageversion", lang),
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Allow: getMsgFromDB(sqldb, "allow", lang),
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Warning: getMsgFromDB(sqldb, "warning", lang),
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Explain: getMsgFromDB(sqldb, "explain", lang),
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},
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BodyClass: "m",
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VersionStats: searchDownloads(sqldb, "counterd", "program", "version","download_count"),
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TotalStats: searchDownloads(sqldb, "count_all", "program","download_count"),
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Lang: lang,
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}
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templates, err := template.ParseFiles("html/master.html", "html/statsitics.html")
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if err != nil {
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log.Println(err)
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}
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err = templates.ExecuteTemplate(res, "master", Counter)
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if err != nil {
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log.Println(err)
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}
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res.WriteHeader(http.StatusOK)
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})
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}
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// getPkgIdFromDB retrieves a list of package IDs from the database.
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// sqldb: The database connection object.
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// Returns: A slice of strings containing package IDs.
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func getPkgIdFromDB(sqldb *sql.DB) []string {
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query, err := sqldb.Query("SELECT id FROM packs_all")
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defer query.Close()
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err = query.Err()
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if err != nil {
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log.Println(err)
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}
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var pkgs []string
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var tmpstr string
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for query.Next() {
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err = query.Scan(&tmpstr)
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if err != nil {
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log.Println(err)
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}
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pkgs = append(pkgs, tmpstr)
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}
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// query.Scan(&pkgs)
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if err != nil {
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log.Println(err)
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}
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return pkgs
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}
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// fullSearchPackagesDB performs a full search of packages in the database.
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// sqldb: The database connection object.
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// Returns: A slice of packages structs containing the full package details.
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func fullSearchPackagesDB(sqldb *sql.DB) []packages {
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pkg_list := getPkgIdFromDB(sqldb)
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var pkgs []packages
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for _, p := range pkg_list {
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query := generateSQL("packs_all", []string{"*"}, [2]string{"id", p})
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res := queryDatabase(sqldb, query)
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var pkg packages
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pkg, _ = ConvertStringsToPackage(res)
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pkgs = append(pkgs, pkg)
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}
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return pkgs
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}
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func uploadFileForServer(sqldb *sql.DB, lang string) http.Handler{
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return http.HandlerFunc(func(res http.ResponseWriter, req *http.Request) {
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pageDataFromDatabase := elements{
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Title: getMsgFromDB(sqldb, "title", lang),
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Header: getMsgFromDB(sqldb, "header", lang),
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Help: getMsgFromDB(sqldb, "help", lang),
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Packagename: getMsgFromDB(sqldb, "packagename", lang),
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Packageversion: getMsgFromDB(sqldb, "packageversion", lang),
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Allow: getMsgFromDB(sqldb, "allow", lang),
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Warning: getMsgFromDB(sqldb, "warning", lang),
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Explain: getMsgFromDB(sqldb, "explain", lang),
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}
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data := struct {
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BodyClass string
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ElementsData elements
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Lang string
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}{
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ElementsData: pageDataFromDatabase,
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BodyClass: "",
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Lang: lang,
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}
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templates, err := template.ParseFiles("html/master.html", "html/uploadfile.html")
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if err != nil {
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log.Println(err)
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}
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err = templates.ExecuteTemplate(res, "master", data)
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if err != nil {
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log.Println(err)
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}
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// upload(res, req)
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res.WriteHeader(http.StatusOK)
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})
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}
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func upload() http.Handler {
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return http.HandlerFunc(func(res http.ResponseWriter, req *http.Request){
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file, header, _ := req.FormFile("myFile")
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req.ParseMultipartForm(10000000<<20)
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defer file.Close()
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filename := header.Filename
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tempFile, _ :=os.CreateTemp("Data",header.Filename)
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defer tempFile.Close()
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fileBytes,_:=io.ReadAll(file)
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tempFile.Write(fileBytes)
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fn,_:=os.OpenFile("Data/"+filename, os.O_WRONLY|os.O_CREATE, 0666)
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defer fn.Close()
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fn.Write(fileBytes)
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log.Println(getDataFromFile("Data/"+filename))
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})}
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// index creates an HTTP handler that serves the main page with data from the database.
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// sqldb: The database connection object.
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// lang: The language code to localize the content.
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// Returns: An http.Handler that serves the main page.
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func index(sqldb *sql.DB, lang string) http.Handler {
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return http.HandlerFunc(func(res http.ResponseWriter, req *http.Request) {
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pageDataFromDatabase := elements{
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Title: getMsgFromDB(sqldb, "title", lang),
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Header: getMsgFromDB(sqldb, "header", lang),
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Help: getMsgFromDB(sqldb, "help", lang),
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Packagename: getMsgFromDB(sqldb, "packagename", lang),
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Packageversion: getMsgFromDB(sqldb, "packageversion", lang),
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Allow: getMsgFromDB(sqldb, "allow", lang),
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Warning: getMsgFromDB(sqldb, "warning", lang),
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Explain: getMsgFromDB(sqldb, "explain", lang),
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}
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data := struct {
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BodyClass string
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ElementsData elements
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PackagesData []packages
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Lang string
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}{
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ElementsData: pageDataFromDatabase,
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BodyClass: "",
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PackagesData: queryPacks(sqldb, &pageDataFromDatabase),
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Lang: lang,
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}
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templates, err := template.ParseFiles("html/master.html", "html/main.html")
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if err != nil {
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log.Println(err)
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}
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err = templates.ExecuteTemplate(res, "master", data)
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if err != nil {
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log.Println(err)
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}
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res.WriteHeader(http.StatusOK)
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})
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}
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// public serves static files from the "public" directory.
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// Returns: An http.Handler that serves static files.
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func public() http.Handler {
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return http.StripPrefix("/public/", http.FileServer(http.Dir("./public")))
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}
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// main initializes the application, sets up logging, database connection, HTTP routing, and starts the server.
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func main() {
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logfilename := "Logs/" + time.Now().Format("2006-01-02--15-04-05") + ".log"
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file, err := os.OpenFile(logfilename, os.O_APPEND|os.O_CREATE, 0777)
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if err != nil {
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os.Exit(12)
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}
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log.SetOutput(file)
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db, _ := sql.Open("sqlite", "file:progs.db")
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mux := http.NewServeMux()
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mux.Handle("/public/", public())
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mux.Handle("/", index(db, "heb"))
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mux.Handle("/en", index(db, "eng"))
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mux.Handle("/stats", stats(db,"eng"))
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mux.Handle("/up", uploadFileForServer(db,"eng"))
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mux.Handle("/upload",upload())
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addr := fmt.Sprintf(":%s", "12312")
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server := http.Server{
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Addr: addr,
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Handler: mux,
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ReadTimeout: 15 * time.Second,
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WriteTimeout: 15 * time.Second,
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IdleTimeout: 15 * time.Second,
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}
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if err := server.ListenAndServe(); err != nil {
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log.Fatalf("main: couldn't start simple server: %v\n", err)
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}
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lang := "heb"
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log.Println(getMsgFromDB(db, "title", lang))
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}
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