package views

import (
	"fmt"

	"github.com/awesome-gocui/gocui"
	"golang.org/x/text/language"
	"golang.org/x/text/message"

	"github.com/edouardparis/lntop/ui/color"
	"github.com/edouardparis/lntop/ui/models"
)

const (
	TRANSACTION        = "transaction"
	TRANSACTION_HEADER = "transaction_header"
	TRANSACTION_FOOTER = "transaction_footer"
)

type Transaction struct {
	view         *gocui.View
	transactions *models.Transactions
}

func (c Transaction) Name() string {
	return TRANSACTION
}

func (c Transaction) Empty() bool {
	return c.transactions == nil
}

func (c *Transaction) Wrap(v *gocui.View) View {
	c.view = v
	return c
}

func (c Transaction) Origin() (int, int) {
	return c.view.Origin()
}

func (c Transaction) Cursor() (int, int) {
	return c.view.Cursor()
}

func (c Transaction) Speed() (int, int, int, int) {
	return 1, 1, 1, 1
}

func (c Transaction) Limits() (pageSize int, fullSize int) {
	_, pageSize = c.view.Size()
	fullSize = len(c.view.BufferLines()) - 1
	return
}

func (c *Transaction) SetCursor(x, y int) error {
	return c.view.SetCursor(x, y)
}

func (c *Transaction) SetOrigin(x, y int) error {
	return c.view.SetOrigin(x, y)
}

func (c *Transaction) Set(g *gocui.Gui, x0, y0, x1, y1 int) error {
	header, err := g.SetView(TRANSACTION_HEADER, x0-1, y0, x1+2, y0+2, 0)
	if err != nil {
		if err != gocui.ErrUnknownView {
			return err
		}
	}
	header.Frame = false
	header.BgColor = gocui.ColorGreen
	header.FgColor = gocui.ColorBlack | gocui.AttrBold
	header.Rewind()
	fmt.Fprintln(header, "Transaction")

	v, err := g.SetView(TRANSACTION, x0-1, y0+1, x1+2, y1-1, 0)
	if err != nil {
		if err != gocui.ErrUnknownView {
			return err
		}
	}
	v.Frame = false
	c.view = v
	c.display()

	footer, err := g.SetView(TRANSACTION_FOOTER, x0-1, y1-2, x1, y1, 0)
	if err != nil {
		if err != gocui.ErrUnknownView {
			return err
		}
	}
	footer.Frame = false
	footer.BgColor = gocui.ColorCyan
	footer.FgColor = gocui.ColorBlack
	footer.Rewind()
	blackBg := color.Black(color.Background)
	fmt.Fprintln(footer, fmt.Sprintf("%s%s %s%s %s%s",
		blackBg("F2"), "Menu",
		blackBg("Enter"), "Transactions",
		blackBg("F10"), "Quit",
	))
	return nil
}

func (c Transaction) Delete(g *gocui.Gui) error {
	err := g.DeleteView(TRANSACTION_HEADER)
	if err != nil {
		return err
	}

	err = g.DeleteView(TRANSACTION)
	if err != nil {
		return err
	}

	return g.DeleteView(TRANSACTION_FOOTER)
}

func (c *Transaction) display() {
	p := message.NewPrinter(language.English)
	v := c.view
	v.Rewind()
	transaction := c.transactions.Current()
	green := color.Green()
	cyan := color.Cyan()
	fmt.Fprintln(v, green(" [ Transaction ]"))
	fmt.Fprintln(v, fmt.Sprintf("%s %s",
		cyan("           Date:"), transaction.Date.Format("15:04:05 Jan _2")))
	fmt.Fprintln(v, p.Sprintf("%s %d",
		cyan("         Amount:"), transaction.Amount))
	fmt.Fprintln(v, p.Sprintf("%s %d",
		cyan("            Fee:"), transaction.TotalFees))
	fmt.Fprintln(v, p.Sprintf("%s %d",
		cyan("    BlockHeight:"), transaction.BlockHeight))
	fmt.Fprintln(v, p.Sprintf("%s %d",
		cyan("NumConfirmations:"), transaction.NumConfirmations))
	fmt.Fprintln(v, p.Sprintf("%s %s",
		cyan("       BlockHash:"), transaction.BlockHash))
	fmt.Fprintln(v, fmt.Sprintf("%s %s",
		cyan("         TxHash:"), transaction.TxHash))
	fmt.Fprintln(v, "")
	fmt.Fprintln(v, green("[ addresses ]"))
	for i := range transaction.DestAddresses {
		fmt.Fprintln(v, fmt.Sprintf("%s %s",
			cyan("               -"), transaction.DestAddresses[i]))
	}

}

func NewTransaction(transactions *models.Transactions) *Transaction {
	return &Transaction{transactions: transactions}
}