package bolt

import (
	"fmt"
	"time"

	dg "github.com/bwmarrin/discordgo"
)

const (
	// the max length allowed for basic messages
	MSG_MAX_LENGTH = 2000
)

// Message contains basic information about the messages received and provides a few methods
// for handling replies, bans, timeouts, reaction, and deletion. All Discord utilities will use
// a timeout to prevent hanging for too long, this timeout can be customized with the WithTimeout
// option.
type Message struct {
	Author      string //current username of the message author
	authorID    string //discord ID of message author
	authorRoles []string
	ID          string              //message ID
	Words       []string            //message data split on whitespaces
	Content     string              //entire message data string
	Channel     string              //name of channel message was sent in
	channelID   string              //ID of channel message was sent in
	Server      string              //name of guild message was sent in
	serverID    string              //ID of guild message was sent in
	Attachments []MessageAttachment //any attachments bound to the message
	Mentions    []*dg.User
	sesh        *bolt
}

// React applies reaction to the message
func (m *Message) React(emoji Reaction) error {
	return m.sesh.MessageReactionAdd(m.channelID, m.ID, fmt.Sprint(emoji))
}

// Respond sends a response to the message, handling chunking if the message exceeds max length
func (m *Message) Respond(res string) error {
	if len(res) > MSG_MAX_LENGTH {
		for len(res) > 0 {
			//send full chunk size allowed by discord
			sc := res[:MSG_MAX_LENGTH]
			rep := m.sesh.createReply(sc, m.ID, m.channelID, m.serverID)
			_, err := m.sesh.ChannelMessageSendComplex(m.channelID, rep)
			if err != nil {
				return err
			}
			res = res[MSG_MAX_LENGTH:]

			//if we have left than a full chunk send the rest and break the loop
			if len(res) < MSG_MAX_LENGTH {
				final := m.sesh.createReply(res, m.ID, m.channelID, m.serverID)
				_, err := m.sesh.ChannelMessageSendComplex(m.channelID, final)
				if err != nil {
					return err
				}

				break
			}
		}

		return nil
	}

	//short enough message to send in one go
	rep := m.sesh.createReply(res, m.ID, m.channelID, m.serverID)
	_, err := m.sesh.ChannelMessageSendComplex(m.channelID, rep)
	return err
}

// Delete removes the message from the current channel
func (m *Message) Delete() error {
	return m.sesh.ChannelMessageDelete(m.channelID, m.ID, nil)
}

// Timeout sets a timeout for the message author
func (m *Message) Timeout(duration time.Time) error {
	return m.sesh.GuildMemberTimeout(m.serverID, m.authorID, &duration)
}

// ClearTimeout removes all timeouts for the message author
func (m *Message) ClearTimeout() error {
	return m.sesh.GuildMemberTimeout(m.serverID, m.authorID, nil)
}

// Ban removes a user from the server, banning them and removing all messages within the range of
// the days parameter
func (m *Message) Ban(reason string, days int) error {
	return m.sesh.GuildBanCreateWithReason(m.serverID, m.authorID, reason, days)
}

// unban user

// ClearBan deletes the ban on message Authors

// lol this won't work, they're banned, same with all clear*
func (m *Message) ClearBan() error {
	return m.sesh.GuildBanDelete(m.serverID, m.authorID)
}

func (m *Message) Mute(username string) error {
	return m.sesh.GuildMemberMute(m.serverID, m.authorID, true)
}

// message attachment details
type MessageAttachment struct {
	ID           string
	URL          string
	ProxyURL     string
	Filename     string
	ContentType  string
	Width        int
	Height       int
	Size         int
	DurationSecs float64
}