mirror of
https://github.com/riwiwa/muzi.git
synced 2026-02-28 11:56:57 -08:00
299 lines
7.4 KiB
Go
299 lines
7.4 KiB
Go
package web
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import (
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"context"
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"fmt"
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"html/template"
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"net/http"
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"os"
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"strconv"
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"muzi/importsongs"
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"golang.org/x/crypto/bcrypt"
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"github.com/go-chi/chi/v5"
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"github.com/go-chi/chi/v5/middleware"
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"github.com/jackc/pgtype"
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"github.com/jackc/pgx/v5"
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)
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type PageData struct {
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Content int
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Artists []string
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Titles []string
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Times []string
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Page int
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}
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func Sub(a int, b int) int {
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return a - b
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}
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func Add(a int, b int) int {
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return a + b
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}
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func getTimes(conn *pgx.Conn, lim int, off int) []string {
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var times []string
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rows, err := conn.Query(context.Background(), "SELECT timestamp FROM history ORDER BY timestamp DESC LIMIT $1 OFFSET $2;", lim, off)
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if err != nil {
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fmt.Fprintf(os.Stderr, "SELECT COUNT failed: %v\n", err)
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return nil
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}
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for rows.Next() {
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var time pgtype.Timestamptz
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err = rows.Scan(&time)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Scanning time failed: %v\n", err)
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return nil
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}
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times = append(times, time.Time.String())
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}
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return times
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}
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func getTitles(conn *pgx.Conn, lim int, off int) []string {
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var titles []string
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rows, err := conn.Query(context.Background(), "SELECT song_name FROM history ORDER BY timestamp DESC LIMIT $1 OFFSET $2;", lim, off)
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if err != nil {
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fmt.Fprintf(os.Stderr, "SELECT COUNT failed: %v\n", err)
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return nil
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}
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for rows.Next() {
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var title string
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err = rows.Scan(&title)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Scanning title failed: %v\n", err)
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return nil
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}
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titles = append(titles, title)
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}
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return titles
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}
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func getArtists(conn *pgx.Conn, lim int, off int) []string {
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var artists []string
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rows, err := conn.Query(context.Background(), "SELECT artist FROM history ORDER BY timestamp DESC LIMIT $1 OFFSET $2;", lim, off)
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if err != nil {
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fmt.Fprintf(os.Stderr, "SELECT COUNT failed: %v\n", err)
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return nil
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}
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for rows.Next() {
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var artist string
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err = rows.Scan(&artist)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Scanning artist name failed: %v\n", err)
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return nil
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}
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artists = append(artists, artist)
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}
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return artists
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}
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func getScrobbles(conn *pgx.Conn) int {
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var count int
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err := conn.QueryRow(context.Background(), "SELECT COUNT (*) FROM history;").Scan(&count)
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if err != nil {
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fmt.Fprintf(os.Stderr, "SELECT COUNT failed: %v\n", err)
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return 0
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}
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return count
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}
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func hashPassword(pass []byte) string {
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hashedPassword, err := bcrypt.GenerateFromPassword(pass, bcrypt.DefaultCost)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Couldn't hash password: %v\n", err)
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}
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return string(hashedPassword)
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}
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func verifyPassword(hashedPassword string, enteredPassword []byte) bool {
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err := bcrypt.CompareHashAndPassword([]byte(hashedPassword), enteredPassword)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error while comparing passwords: %v\n", err)
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return false
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}
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return true
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}
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func createAccount(w http.ResponseWriter, r *http.Request) {
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conn, err := pgx.Connect(context.Background(), "postgres://postgres:postgres@localhost:5432/muzi")
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if err != nil {
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fmt.Fprintf(os.Stderr, "Cannot connect to muzi database: %v\n", err)
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return
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}
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defer conn.Close(context.Background())
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if r.Method == "POST" {
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r.ParseForm()
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username := r.FormValue("uname")
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hashedPassword := hashPassword([]byte(r.FormValue("pass")))
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if importsongs.TableExists("users", conn) == false {
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_, err = conn.Exec(
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context.Background(),
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`CREATE TABLE users (username TEXT, password TEXT, pk SERIAL, PRIMARY KEY (pk));`,
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)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Cannot create users table: %v\n", err)
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panic(err)
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}
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}
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_, err = conn.Exec(
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context.Background(), `INSERT INTO users (username, password) VALUES ($1, $2);`,
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username,
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hashedPassword,
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)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Cannot add new user to users table: %v\n", err)
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http.Redirect(w, r, "/createaccount", http.StatusSeeOther)
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} else {
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http.Redirect(w, r, "/profile/" + username, http.StatusSeeOther)
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}
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}
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}
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func createAccountHandler(w http.ResponseWriter, r *http.Request) {
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tmp, err := template.New("create_account.gohtml").ParseFiles("./templates/create_account.gohtml")
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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err = tmp.Execute(w, nil)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}
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func loginSubmit(w http.ResponseWriter, r *http.Request) {
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conn, err := pgx.Connect(context.Background(), "postgres://postgres:postgres@localhost:5432/muzi")
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if err != nil {
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fmt.Fprintf(os.Stderr, "Cannot connect to muzi database: %v\n", err)
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return
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}
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defer conn.Close(context.Background())
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if r.Method == "POST" {
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r.ParseForm()
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username := r.FormValue("uname")
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password := r.FormValue("pass")
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var storedPassword string
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err := conn.QueryRow(context.Background(), "SELECT password FROM users WHERE username = $1;", username).Scan(&storedPassword)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Cannot get password for entered username: %v\n", err)
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}
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if verifyPassword(storedPassword, []byte(password)) {
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http.Redirect(w, r, "/profile/" + username, http.StatusSeeOther)
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}
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}
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}
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func loginPage(w http.ResponseWriter, r *http.Request) {
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tmp, err := template.New("login.gohtml").ParseFiles("./templates/login.gohtml")
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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err = tmp.Execute(w, nil)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}
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func historyPage(w http.ResponseWriter, r *http.Request) {
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conn, err := pgx.Connect(context.Background(), "postgres://postgres:postgres@localhost:5432/muzi")
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if err != nil {
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fmt.Fprintf(os.Stderr, "Cannot connect to muzi database: %v\n", err)
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return
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}
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defer conn.Close(context.Background())
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var pageInt int
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pageStr := r.URL.Query().Get("page")
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if pageStr == "" {
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pageInt = 1
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} else {
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pageInt, err = strconv.Atoi(pageStr)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Cannot convert page URL query from string to int: %v\n", err)
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return
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}
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}
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lim := 25
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off := 0 + (25 * (pageInt - 1))
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data := PageData{
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Content: getScrobbles(conn),
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Artists: getArtists(conn, lim, off),
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Titles: getTitles(conn, lim, off),
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Times: getTimes(conn, lim, off),
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Page: pageInt,
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}
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funcMap := template.FuncMap{
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"Sub": Sub,
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"Add": Add,
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}
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tmp, err := template.New("history.gohtml").Funcs(funcMap).ParseFiles("./templates/history.gohtml")
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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err = tmp.Execute(w, data)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}
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type Profile struct {
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Username string
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Bio string
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}
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func Start() {
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addr := ":1234"
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r := chi.NewRouter()
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r.Use(middleware.Logger)
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r.Get("/static/style.css", func(w http.ResponseWriter, r *http.Request) {
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http.ServeFile(w, r, "./static/style.css")
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})
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r.Get("/history", historyPage)
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r.Get("/login", loginPage)
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r.Get("/createaccount", createAccountHandler)
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// TODO: clean this up
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r.Get("/profile/{username}", func(w http.ResponseWriter, r *http.Request) {
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username := chi.URLParam(r, "username")
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profileData := Profile {
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Username: username,
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Bio: "default",
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}
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tmp, err := template.ParseFiles("./templates/profile.gohtml")
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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tmp.Execute(w, profileData)
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})
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r.Post("/loginsubmit", loginSubmit)
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r.Post("/createaccountsubmit", createAccount)
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fmt.Printf("WebUI starting on %s\n", addr)
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http.ListenAndServe(addr, r)
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}
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