package cmd

import (
	"errors"
	"strconv"
	"strings"
)

type Embed struct {
	Author      Author  `json:"author"`
	Title       string  `json:"title"`
	URL         string  `json:"url"`
	Description string  `json:"description"`
	Color       int64   `json:"color"`
	Fields      []Field `json:"fields"`
	Thumbnail   Image   `json:"thumbnail,omitempty"`
	Image       Image   `json:"image,omitempty"`
	Footer      Footer  `json:"footer"`
}

type Author struct {
	Name    string `json:"name"`
	URL     string `json:"url"`
	IconURL string `json:"icon_url"`
}

type Field struct {
	Name   string `json:"name"`
	Value  string `json:"value"`
	Inline bool   `json:"inline,omitempty"`
}

type Footer struct {
	Text    string `json:"text"`
	IconURL string `json:"icon_url,omitempty"`
}

type Image struct {
	URL string `json:"url"`
}

func (w *Webhook) NewEmbed(Title, Description, URL string) {
	emb := Embed{Title: Title, Description: Description, URL: URL}
	w.Embeds = append(w.Embeds, &emb)
}

func (w *Webhook) SetAuthor(Name, URL, IconURL string) {
	if len(w.Embeds) == 0 {
		emb := Embed{Author: Author{Name, URL, IconURL}}
		w.Embeds = append(w.Embeds, &emb)
	} else {
		w.Embeds[0].Author = Author{Name, URL, IconURL}
	}
}

func (w *Webhook) SetColor(color string) error {
	color = strings.Replace(color, "0x", "", -1)
	color = strings.Replace(color, "0X", "", -1)
	color = strings.Replace(color, "#", "", -1)
	colorInt, err := strconv.ParseInt(color, 16, 64)
	if err != nil {
		return errors.New("Invalid hex code passed")
	}
	w.Embeds[0].Color = colorInt
	return nil
}

func (w *Webhook) SetThumbnail(URL string) error {
	if len(w.Embeds) < 1 {
		return errors.New("Invalid Embed passed in, Webhook.Embeds must have at least one Embed element")
	}
	w.Embeds[0].Thumbnail = Image{URL}
	return nil
}

func (w *Webhook) SetImage(URL string) error {
	if len(w.Embeds) < 1 {
		return errors.New("Invalid Embed passed in, Webhook.Embeds must have at least one Embed element")
	}
	w.Embeds[0].Image = Image{URL}
	return nil
}

func (w *Webhook) SetFooter(Text, IconURL string) error {
	if len(w.Embeds) < 1 {
		return errors.New("Invalid Embed passed in, Webhook.Embeds must have at least one Embed element")
	}
	w.Embeds[0].Footer = Footer{Text, IconURL}
	return nil
}

func (w *Webhook) AddField(Name, Value string, Inline bool) error {
	if len(w.Embeds) < 1 {
		return errors.New("Invalid Embed passed in, Webhook.Embeds must have at least one Embed element")
	}
	w.Embeds[0].Fields = append(w.Embeds[0].Fields, Field{Name, Value, Inline})
	return nil
}