package discord

import (
	"encoding/json"
	"io/ioutil"
	"net/http"
)

const (
	dadJokeAPI = "https://icanhazdadjoke.com/"
	dadJokeErr = "Could not get a Dad joke. :slight_frown:"
)

type dadJoke struct {
	ID     string `json:"id"`
	Joke   string `json:"joke"`
	Status int    `json:"status"`
}

func init() {
	commands["dad"] = command{
		validate: func(cmd commandInit) bool {
			return true
		},
		run: func(cmd commandInit) (string, error) {
			req, err := http.NewRequest(http.MethodGet, dadJokeAPI, nil)
			if err != nil {
				return "", err
			}
			req.Header.Add("Accept", "application/json")

			resp, err := http.DefaultClient.Do(req)
			if err != nil {
				return "", err
			}

			if resp.StatusCode != http.StatusOK {
				return dadJokeErr, nil
			}

			body, err := ioutil.ReadAll(resp.Body)
			if err != nil {
				return "", err
			}

			var dj dadJoke
			if err := json.Unmarshal(body, &dj); err != nil {
				return "", nil
			}

			// Check status again, in case API returned an error
			if dj.Status != http.StatusOK {
				return dadJokeErr, nil
			}

			return dj.Joke, nil
		},
		help: "Get a random Dad joke",
	}
}