package view

import (
	"fmt"
	"math"
	"strings"
	"time"

	"github.com/jedib0t/go-pretty/v6/table"
	"golang.org/x/text/language"
	"golang.org/x/text/message"
	"me.thuanle/bbot/internal/helper/binancex"
	"me.thuanle/bbot/internal/services/tele/view/helper"
	"me.thuanle/bbot/internal/utils/timex"
)

func RenderPrice(price float64) string {
	mFmt := message.NewPrinter(language.AmericanEnglish)
	switch {
	case price > 1000:
		return mFmt.Sprintf("%0.0f", price)
	case price > 100:
		return mFmt.Sprintf("%0.1f", price)
	case price > 10:
		return mFmt.Sprintf("%0.2f", price)
	case price > 1:
		return mFmt.Sprintf("%0.3f", price)
	case price > 0.1:
		return mFmt.Sprintf("%0.4f", price)
	case price > 0.01:
		return mFmt.Sprintf("%0.5f", price)
	case price > 0.001:
		return mFmt.Sprintf("%0.6f", price)
	case price > 0.0001:
		return mFmt.Sprintf("%0.7f", price)
	default:
		return mFmt.Sprintf("%0.8f", price)
	}
}

func RenderOnPriceMessage(symbol string, spotPrice float64, futurePrice float64, fundrate float64, fundtime int64, marginRate float64) string {
	return fmt.Sprintf(
		"%s\n"+
			"  Spot: %s - Future: %s \n"+
			"  Fund rate: %.4f%% %s in %s\n"+
			"  Margin rate: %.3f%%",
		RenderSymbolInfo(symbol),
		RenderPrice(spotPrice), RenderPrice(futurePrice),
		fundrate*100, IconOfFundingFeeDirection(fundrate), timex.CdMinuteStringTime(time.UnixMilli(fundtime)),
		marginRate*365*100,
	)
}

func RenderOnAlphaPriceMessage(symbol string, price float64, change24h float64) string {
	icon := "🟢"
	if change24h < 0 {
		icon = "🔴"
	}
	return fmt.Sprintf(
		"🅰️ %s\n"+
			"  Price: $%s\n"+
			"  24h: %s%.2f%%",
		symbol,
		RenderPrice(price),
		icon, change24h,
	)
}

type RichTokenMessageInput struct {
	Token string

	HasSpot   bool
	SpotPrice float64

	HasFuture     bool
	FuturePrice   float64
	FundingRate   float64
	FundingTimeMs int64

	HasAlpha   bool
	AlphaPrice float64

	HasAlpha24h    bool
	Alpha24hChange float64

	HasMarginAPR     bool
	MarginAPRPercent float64
}

func RenderRichTokenMessage(in RichTokenMessageInput) string {
	rows := []string{fmt.Sprintf("🪙 %s", strings.ToUpper(in.Token))}

	if in.HasSpot {
		rows = append(rows, fmt.Sprintf("💵 Spot: $%s", RenderPrice(in.SpotPrice)))
	}
	if in.HasFuture {
		rows = append(rows, fmt.Sprintf("📈 Future: $%s", RenderPrice(in.FuturePrice)))
	}
	if in.HasAlpha {
		rows = append(rows, fmt.Sprintf("🅰️ Alpha: $%s", RenderPrice(in.AlphaPrice)))
	}

	if in.HasSpot && in.HasFuture && in.SpotPrice > 0 {
		delta := in.FuturePrice - in.SpotPrice
		deltaPct := delta / in.SpotPrice * 100
		sign := "+"
		if delta < 0 {
			sign = "-"
		}
		rows = append(rows, fmt.Sprintf("🧭 Basis: %s$%s (%+.2f%%)", sign, RenderPrice(math.Abs(delta)), deltaPct))
	}

	if in.HasFuture {
		rows = append(rows, fmt.Sprintf("💸 Funding: %.4f%% %s in %s",
			in.FundingRate*100,
			IconOfFundingFeeDirection(in.FundingRate),
			timex.CdMinuteStringTime(time.UnixMilli(in.FundingTimeMs)),
		))
	}

	if in.HasMarginAPR {
		rows = append(rows, fmt.Sprintf("🏦 Margin: %.3f%% APR", in.MarginAPRPercent))
	}

	if in.HasAlpha24h {
		icon := "🟢"
		if in.Alpha24hChange < 0 {
			icon = "🔴"
		}
		rows = append(rows, fmt.Sprintf("📊 Alpha 24h: %s%+.2f%%", icon, in.Alpha24hChange))
	}

	return strings.Join(rows, "\n")
}

func RenderOnGetTopPricesMessage(symbols []string, price []float64, fundRate []float64) string {
	t := helper.NewNoBorderTableWriter("", "Price", "Fund")
	mFmt := message.NewPrinter(language.AmericanEnglish)
	for i, symbol := range symbols {
		t.AppendRow(table.Row{
			binancex.Symbol2Token(symbol),
			mFmt.Sprintf("%.2f", price[i]),
			mFmt.Sprintf("%.3f%%", fundRate[i]*100),
		})
	}
	return t.Render()
}