package users

import (
	"database/sql"
	"encoding/json"
	"fmt"
	"github.com/go-chi/chi"
	"github.com/go-chi/jwtauth"
	"github.com/go-chi/render"
	"net/http"
)

var (
	DB        *sql.DB
	TokenAuth *jwtauth.JWTAuth
)

type User struct {
	Username string `json:"username",db:"username"`
	Email    string `json:"email",db:"email"`
	Country  string `json:"country",db:"country"`
	Bio      string `json:"bio",db:"bio"`
}

func Init() {
	dbCreateStatement := `
	CREATE TABLE IF NOT EXISTS user_profiles
	(id SERIAL PRIMARY KEY,
	username text REFERENCES users (username),
	email text,
	country text,
	bio text)`
	DB.Exec(dbCreateStatement)
}

func Routes() *chi.Mux {
	r := chi.NewRouter()
	r.Group(func(r chi.Router) {
		r.Use(jwtauth.Verifier(TokenAuth))
		r.Use(jwtauth.Authenticator)
		r.Put("/{username}", updateUser)
	})
	r.Get("/{username}", getUser)
	return r
}

func getUser(w http.ResponseWriter, r *http.Request) {
	username := chi.URLParam(r, "username")
	result := DB.QueryRow("SELECT username, email, country, bio FROM user_profiles WHERE username=$1", username)
	user := User{}
	err := result.Scan(&user.Username, &user.Email, &user.Country, &user.Bio)
	fmt.Println(err)
	if err != nil {
		w.WriteHeader(http.StatusBadRequest)
		return
	}
	render.JSON(w, r, user)
}

func updateUser(w http.ResponseWriter, r *http.Request) {
	_, claims, _ := jwtauth.FromContext(r.Context())
	username := claims["username"].(string)
	searchname := chi.URLParam(r, "username")
	if username != searchname {
		w.WriteHeader(http.StatusUnauthorized)
		return
	}
	user := &User{}
	err := json.NewDecoder(r.Body).Decode(user)
	if err != nil {
		w.WriteHeader(http.StatusBadRequest)
		return
	}
	user.Username = username
	updateProfileStatement := `
	UPDATE user_profiles
    SET username = $1,
    email = $2,
    country = $3,
    bio = $4
    WHERE username = $5`
	_, err = DB.Exec(updateProfileStatement, user.Username, user.Email, user.Country, user.Bio, username)
	fmt.Println(err)
	return
}

func CreateProfile(username string, email string) {
	blankProfileStatement := `
	INSERT INTO user_profiles (username, email, country, bio)
	VALUES ($1, $2, $3, $4)`
	DB.Exec(blankProfileStatement, username, email, "", "")
}