package bolt

import (
	"fmt"
	"time"

	dg "github.com/bwmarrin/discordgo"
)

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

// command payload functions, any strings returned are sent as a response to the command
type Payload func(c *Context) error

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

type Author struct {
	Name  string
	ID    string
	Roles []string
}

type Message struct {
	Author      Author
	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
}

type Context struct {
	Message *Message
	bolt    *bolt
}

// React applies reaction to the message
func (c *Context) React(emoji Reaction) error {
	return c.bolt.MessageReactionAdd(c.Message.ChannelID, c.Message.ID, fmt.Sprint(emoji))
}

// Respond sends a response to the message, handling chunking if the message exceeds max length
func (c *Context) 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 := c.bolt.createReply(sc, c.Message.ID, c.Message.ChannelID, c.Message.ServerID)
			_, err := c.bolt.ChannelMessageSendComplex(c.Message.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 := c.bolt.createReply(res, c.Message.ID, c.Message.ChannelID, c.Message.ServerID)
				_, err := c.bolt.ChannelMessageSendComplex(c.Message.ChannelID, final)
				if err != nil {
					return err
				}

				break
			}
		}

		return nil
	}

	//short enough message to send in one go
	rep := c.bolt.createReply(res, c.Message.ID, c.Message.ChannelID, c.Message.ServerID)
	_, err := c.bolt.ChannelMessageSendComplex(c.Message.ChannelID, rep)
	return err
}

// Delete removes the message from the current channel
func (c *Context) Delete() error {
	return c.bolt.ChannelMessageDelete(c.Message.ChannelID, c.Message.ID, nil)
}

func (c *Context) Timeout(userId string, duration time.Time) error {
	return c.bolt.GuildMemberTimeout(c.Message.ServerID, userId, &duration)
}

func (c *Context) ClearTimeout(userId string) error {
	return c.bolt.GuildMemberTimeout(c.Message.ServerID, userId, nil)
}

func (c *Context) Mute(userId string) error {
	return c.bolt.GuildMemberMute(c.Message.ServerID, userId, true)
}

func (c *Context) Unmute(userId string) error {
	return c.bolt.GuildMemberMute(c.Message.ServerID, userId, false)
}