// Copyright 2023 wanderer <a_mirre at utb dot cz>
// SPDX-License-Identifier: AGPL-3.0-only

package handlers

import (
	"context"
	"net/http"

	"git.dotya.ml/mirre-mt/pcmt/ent"
	moduser "git.dotya.ml/mirre-mt/pcmt/modules/user"
	"github.com/labstack/echo-contrib/session"
	"github.com/labstack/echo/v4"
)

func Home(client *ent.Client) echo.HandlerFunc {
	return func(c echo.Context) error {
		var username string

		addHeaders(c)

		sess, _ := session.Get(setting.SessionCookieName(), c)
		if sess == nil {
			log.Info("no session, redirecting to /signin", "endpoint", "/home")
			return c.Redirect(http.StatusSeeOther, "/signin")
		}

		if sess.Values["foo"] != nil {
			log.Info("gorilla session", "custom field test", sess.Values["foo"].(string))
		}

		uname := sess.Values["username"]
		if uname == nil {
			log.Info("session cookie found but username invalid, redirecting to signin", "endpoint", "/home")

			return c.Redirect(http.StatusSeeOther, "/signin")
		}

		log.Info("gorilla session", "username", sess.Values["username"].(string))
		username = sess.Values["username"].(string)

		// example denial.
		// if _, err := c.Cookie("aha"); err != nil {
		// log.Printf("error: %q", err)
		// return echo.NewHTTPError(http.StatusUnauthorized, http.StatusText(http.StatusUnauthorized))
		// }

		var u moduser.User

		ctx := context.WithValue(context.Background(), moduser.CtxKey{}, slogger)
		if usr, err := moduser.QueryUser(ctx, client, username); err == nil && usr != nil {
			c.Logger().Debug("got usr: ", usr.Username)
			c.Logger().Debug("admin? ", usr.IsAdmin)

			u.ID = usr.ID
			u.Username = usr.Username
			u.IsActive = usr.IsActive
			u.IsLoggedIn = true
		} else {
			c.Logger().Error("failed to query usr", username)

			return renderErrorPage(
				c,
				http.StatusInternalServerError,
				http.StatusText(http.StatusInternalServerError)+" failed to query usr (make sure you've got cookies enabled)",
				err.Error(),
			)
		}

		csrf := c.Get("csrf").(string)

		err := c.Render(http.StatusOK, "home.tmpl",
			page{
				AppName:   setting.AppName(),
				AppVer:    appver,
				Title:     "Home",
				Name:      username,
				DevelMode: setting.IsDevel(),
				CSRF:      csrf,
				Current:   "home",
				User:      u,
			},
		)
		if err != nil {
			c.Logger().Errorf("error: %q", err)

			return renderErrorPage(
				c,
				http.StatusInternalServerError, http.StatusText(http.StatusInternalServerError),
				err.Error(),
			)
		}

		return nil
	}
}