package handlers

import (
    "log"
    "net/http"
    "threadr/models"
    "github.com/gorilla/sessions"
)

func SignupHandler(app *App) http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
        session := r.Context().Value("session").(*sessions.Session)
        if r.Method == http.MethodPost {
            username := r.FormValue("username")
            password := r.FormValue("password")
            err := models.CreateUser(app.DB, username, password)
            if err != nil {
                log.Printf("Error creating user: %v", err)
                data := struct {
                    PageData
                    Error string
                }{
                    PageData: PageData{
                        Title:            "ThreadR - Sign Up",
                        Navbar:           "signup",
                        LoggedIn:         false,
                        ShowCookieBanner: true,
                        BasePath:         app.Config.ThreadrDir,
                        StaticPath:       app.Config.ThreadrDir + "/static",
                        CurrentURL:       r.URL.Path,
                    },
                    Error: "Error creating user: " + err.Error(),
                }
                if err := app.Tmpl.ExecuteTemplate(w, "signup", data); err != nil {
                    log.Printf("Error executing template in SignupHandler: %v", err)
                    http.Error(w, "Internal Server Error", http.StatusInternalServerError)
                    return
                }
                return
            }
            http.Redirect(w, r, app.Config.ThreadrDir+"/login/", http.StatusFound)
            return
        }
        data := struct {
            PageData
            Error string
        }{
            PageData: PageData{
                Title:            "ThreadR - Sign Up",
                Navbar:           "signup",
                LoggedIn:         session.Values["user_id"] != nil,
                ShowCookieBanner: true,
                BasePath:         app.Config.ThreadrDir,
                StaticPath:       app.Config.ThreadrDir + "/static",
                CurrentURL:       r.URL.Path,
            },
            Error: "",
        }
        if err := app.Tmpl.ExecuteTemplate(w, "signup", data); err != nil {
            log.Printf("Error executing template in SignupHandler: %v", err)
            http.Error(w, "Internal Server Error", http.StatusInternalServerError)
            return
        }
    }
}