package handlers

import (
	"fmt"
	"net/http"
	"strconv"

	"erp_system/internal/models"
)

func (h *Handler) UserList(w http.ResponseWriter, r *http.Request) {
	users, err := models.UserGetAll(h.DB)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	data := map[string]interface{}{
		"Title":      "Users",
		"ActivePage": "users",
		"Users":      users,
	}
	h.render(w, r, []string{"layout.html", "users/list.html"}, data)
}

func (h *Handler) UserNew(w http.ResponseWriter, r *http.Request) {
	data := map[string]interface{}{
		"Title":      "New User",
		"ActivePage": "users",
		"User":       &models.User{},
		"IsNew":      true,
	}
	h.render(w, r, []string{"layout.html", "users/form.html"}, data)
}

func (h *Handler) UserCreate(w http.ResponseWriter, r *http.Request) {
	username := r.FormValue("username")
	password := r.FormValue("password")
	role := r.FormValue("role")

	if username == "" || password == "" {
		data := map[string]interface{}{
			"Title":      "New User",
			"ActivePage": "users",
			"User":       &models.User{Username: username, Role: role},
			"IsNew":      true,
			"Error":      "Username and Password are required",
		}
		h.render(w, r, []string{"layout.html", "users/form.html"}, data)
		return
	}

	if err := models.UserCreate(h.DB, username, password, role); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	if r.Header.Get("HX-Request") == "true" {
		w.Header().Set("HX-Redirect", "/users")
		return
	}
	http.Redirect(w, r, "/users", http.StatusSeeOther)
}

func (h *Handler) UserDelete(w http.ResponseWriter, r *http.Request) {
	id, _ := strconv.Atoi(r.PathValue("id"))

	// Prevent deleting yourself
	session, _ := h.Store.Get(r, "erp-session")
	currentUserID := session.Values["user_id"].(int)
	if id == currentUserID {
		w.Header().Set("HX-Trigger", `{"showMessage": "Cannot delete yourself"}`)
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprintf(w, "Cannot delete yourself")
		return
	}

	if err := models.UserDelete(h.DB, id); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	if r.Header.Get("HX-Request") == "true" {
		// Just remove the row from the table or reload
		// Since it's a delete action, usually redirect or reload list
		w.Header().Set("HX-Refresh", "true")
		return
	}
	http.Redirect(w, r, "/users", http.StatusSeeOther)
}