package main

import (
	"fmt"
	"time"

	"github.com/diamondburned/arikawa/v3/discord"
	"github.com/rivo/tview"
)

type MessagesText struct {
	*tview.TextView
}

func newMessagesText() *MessagesText {
	mt := &MessagesText{
		TextView: tview.NewTextView(),
	}

	mt.SetDynamicColors(true)
	mt.SetRegions(true)
	mt.SetWordWrap(true)

	mt.SetBorder(cfg.Theme.MessagesText.Border)

	padding := cfg.Theme.MessagesText.BorderPadding
	mt.SetBorderPadding(padding[0], padding[1], padding[2], padding[3])

	return mt
}

func (mt *MessagesText) newMessage(m *discord.Message) error {
	switch m.Type {
	case discord.DefaultMessage, discord.InlinedReplyMessage:
		// Region tags are square brackets that contain a region ID in double quotes
		// https://pkg.go.dev/github.com/rivo/tview#hdr-Regions_and_Highlights
		fmt.Fprintf(mt, `["%s"]`, m.ID)

		if m.ReferencedMessage != nil {
			fmt.Fprint(mt, "> [::d]")

			// Author
			mt.newAuthor(m.ReferencedMessage)
			// Content
			mt.newContent(m.ReferencedMessage)

			fmt.Fprint(mt, "[::-]")
			fmt.Fprintln(mt)
		}

		// Author
		mt.newAuthor(m)
		// Timestamps
		mt.newTimestamp(m)
		// Content
		fmt.Fprintln(mt)
		mt.newContent(m)

		// Tags with no region ID ([""]) don't start new regions. They can therefore be used to mark the end of a region.
		fmt.Fprint(mt, `[""]`)
	}

	fmt.Fprint(mt, "\n\n")
	return nil
}

func (mt *MessagesText) newAuthor(m *discord.Message) {
	fmt.Fprintf(mt, "[blue]%s[-] ", m.Author.Username)
}

func (mt *MessagesText) newTimestamp(m *discord.Message) {
	fmt.Fprintf(mt, "[::d]%s[::-]", m.Timestamp.Format(time.Kitchen))
}

func (mt *MessagesText) newContent(m *discord.Message) {
	fmt.Fprint(mt, tview.Escape(m.Content))
}