package controllers

import (
	"errors"
	"fmt"
	"net/http"

	"git.kirsle.net/apps/gophertype/pkg/constants"
	"git.kirsle.net/apps/gophertype/pkg/glue"
	"git.kirsle.net/apps/gophertype/pkg/middleware"
	"git.kirsle.net/apps/gophertype/pkg/models"
	"git.kirsle.net/apps/gophertype/pkg/responses"
	"github.com/gorilla/mux"
)

func init() {
	glue.Register(glue.Endpoint{
		Path:    "/admin/setup",
		Methods: []string{"GET", "POST"},
		Middleware: []mux.MiddlewareFunc{
			middleware.ExampleMiddleware,
		},
		Handler: func(w http.ResponseWriter, r *http.Request) {
			// See if we already have an admin account.
			if _, err := models.FirstAdmin(); err == nil {
				responses.Panic(w, http.StatusForbidden, "This site is already initialized.")
				return
			}

			// Template variables.
			v := map[string]interface{}{}

			// POST handler: create the admin account.
			if r.Method == http.MethodPost {
				var (
					username    = r.FormValue("username")
					displayName = r.FormValue("name")
					password    = r.FormValue("password")
					password2   = r.FormValue("password2")
				)

				// Username and display name validation happens in CreateUser.
				// Validate the passwords match here.
				if len(password) < constants.PasswordMinLength {
					v["Error"] = fmt.Errorf("your password is too short (must be %d+ characters)", constants.PasswordMinLength)
				}
				if password != password2 {
					v["Error"] = errors.New("your passwords don't match")
				} else {
					admin := models.User{
						Username: username,
						Name:     displayName,
						IsAdmin:  true,
					}
					admin.SetPassword(password)

					if err := models.CreateUser(admin); err != nil {
						v["Error"] = err
					} else {
						// Admin created! Make the default config.
						cfg := models.GetSettings()
						cfg.Save()

						w.Write([]byte("Success"))
						return
					}
				}
			}

			responses.RenderTemplate(w, r, "_builtin/initial_setup.gohtml", v)
		},
	})

}