package controllers

import (
	"kontor-api-gin/pkg/globals"
	"kontor-api-gin/pkg/helpers"
	"log"
	"net/http"

	"github.com/gin-contrib/sessions"

	"github.com/gin-gonic/gin"
)

func LoginGetHandler(c *gin.Context) {
	session := sessions.Default(c)
	user := session.Get(globals.UserKey)
	if user != nil {
		c.HTML(http.StatusBadRequest, "login.tmpl", gin.H{
			"title":   "Kontor Gin",
			"version": "0.4.0",
			"content": "Please logout first",
			"user":    user,
		})
		return
	}
	c.HTML(http.StatusOK, "login.tmpl", gin.H{
		"title":   "Kontor Gin",
		"version": "0.4.0",
		"content": "",
		"user":    user,
	})
}

func LoginPostHandler(c *gin.Context) {
	session := sessions.Default(c)
	user := session.Get(globals.UserKey)
	if user != nil {
		c.HTML(http.StatusBadRequest, "login.tmpl", gin.H{
			"title":   "Kontor Gin",
			"version": "0.4.0",
			"content": "Please logout first",
		})
		return
	}

	username := c.PostForm("username")
	password := c.PostForm("password")

	if helpers.EmptyUserPass(username, password) {
		c.HTML(http.StatusBadRequest, "login.tmpl", gin.H{
			"title":   "Kontor Gin",
			"version": "0.4.0",
			"content": "Parameters can't be empty",
		})
	}

	if !helpers.CheckUserPass(username, password) {
		c.HTML(http.StatusUnauthorized, "login.tmpl", gin.H{
			"title":   "Kontor Gin",
			"version": "0.4.0",
			"content": "Incorrect username or password",
		})
	}

	session.Set(globals.UserKey, username)
	if err := session.Save(); err != nil {
		c.HTML(http.StatusInternalServerError, "login.tmpl", gin.H{
			"title":   "Kontor Gin",
			"version": "0.4.0",
			"content": "Failed to save session",
		})
		return
	}

	c.Redirect(http.StatusMovedPermanently, "/")
}

func LogoutGetHandler(c *gin.Context) {
	session := sessions.Default(c)
	user := session.Get(globals.UserKey)
	log.Printf("logging out user %v", user)
	if user == nil {
		log.Println("Invalid session token")
		return
	}
	session.Delete(globals.UserKey)
	if err := session.Save(); err != nil {
		log.Printf("Failed to save session: %v", err)
		return
	}

	c.Redirect(http.StatusMovedPermanently, "/")
}