package routing

import (
	"encoding/xml"
	lishwist "lishwist/core"
	"lishwist/http/response"
	"net/http"

	"github.com/Teajey/rsvp"
)

type UserList struct {
	XMLName xml.Name        `xml:"Users" json:"-"`
	Users   []lishwist.User `xml:"User"`
}

func Users(app *lishwist.Session, session *response.Session, h http.Header, r *http.Request) rsvp.Response {
	admin := app.Admin()
	if admin == nil {
		return response.NotFound()
	}

	users, err := admin.ListUsers()
	if err != nil {
		return response.Error(http.StatusInternalServerError, "Failed to get users: %s", err)
	}

	return response.Data("", UserList{Users: users})
}

func User(app *lishwist.Session, session *response.Session, h http.Header, r *http.Request) rsvp.Response {
	admin := app.Admin()
	if admin == nil {
		return response.NotFound()
	}

	reference := r.PathValue("userReference")

	user, err := lishwist.GetUserByReference(reference)
	if err != nil {
		return response.Error(http.StatusInternalServerError, "Failed to get user: %s", err)
	}
	if user == nil {
		return response.Error(http.StatusNotFound, "User not found")
	}

	return response.Data("", user)
}

func UserPost(app *lishwist.Session, session *response.Session, h http.Header, r *http.Request) rsvp.Response {
	admin := app.Admin()
	if admin == nil {
		return response.NotFound()
	}

	err := r.ParseForm()
	if err != nil {
		return response.Error(http.StatusBadRequest, "Failed to parse form")
	}

	reference := r.PathValue("userReference")

	intent := r.Form.Get("intent")

	if intent != "" {
		switch intent {
		case "delete":
			if reference == app.User().Reference {
				return response.Error(http.StatusForbidden, "You cannot delete yourself.")
			}
			err = admin.UserSetLive(reference, false)
			if err != nil {
				return response.Error(http.StatusInternalServerError, "Failed to delete user: %s", err)
			}
		case "rename":
			name := r.Form.Get("display_name")
			err = admin.RenameUser(reference, name)
			if err != nil {
				return response.Error(http.StatusInternalServerError, "Failed to rename user: %s", err)
			}
		case "set_password":
			newPassword := r.Form.Get("new_password")
			err = admin.SetUserPassword(reference, newPassword)
			if err != nil {
				return response.Error(http.StatusInternalServerError, "Failed to set new password: %s", err)
			}
		default:
			return response.Error(http.StatusBadRequest, "Invalid intent %q", intent)
		}
	}

	user, err := lishwist.GetUserByReference(reference)
	if err != nil {
		return response.Error(http.StatusInternalServerError, "Failed to get user: %s", err)
	}

	return response.Data("", user)
}