package wat

import (
	"crypto/rand"
	"fmt"
	"math/big"
	"strconv"
	"strings"
	"time"

	"github.com/go-irc/irc"
)

type WatGame struct {
	bot            *WatBot
	db             *WatDb
	me             Player
	commands       map[string](func(*Player, []string) string)
	aliases        map[string](func(*Player, []string) string)
	lifeCommands   map[string](func(*Player, []string) string)
	simpleCommands []string
	roid           map[string]int
}

var currency = "watcoin"
var currencys = "watcoins"
var unconscious = "wat, your hands fumble and fail you. try resting, weakling."

func NewWatGame(bot *WatBot, db *WatDb) *WatGame {
	g := WatGame{bot, db, Player{}, nil, nil, nil, nil, map[string]int{}}
	g.me = g.db.User(bot.Nick, "", true)
	g.commands = map[string](func(*Player, []string) string){
		//"wat":   g.megaWat,
		"steroid":  g.Steroid,
		"watch":    g.Watch,
		"coins":    g.Balance,
		"send":     g.Send,
		"rest":     g.Rest,
		"leech":    g.Leech,
		"roll":     g.Roll,
		"dice":     g.Dice,
		"mine":     g.Mine,
		"bankrupt": g.Bankrupt,
		"heal":     g.Heal,
	}
	g.aliases = map[string](func(*Player, []string) string){
		"sleep": g.Rest,
		"flip":  g.Roll,
	}
	g.lifeCommands = map[string](func(*Player, []string) string){
		"riot":  g.Riot,
		"bench": g.Bench,
		"steal": g.Steal,
		"frame": g.Frame,
		"punch": g.Punch,
	}
	g.simpleCommands = []string{
		"ping",
		"strongest",
		"healthiest",
		"losers",
		"richest",
		"bankruptest",
	}
	return &g
}

func (g *WatGame) Msg(m *irc.Message, player *Player, fields []string) {
	command := strings.ToLower(fields[0])
	reply := ""
	if g.commands[command] != nil {
		reply = g.commands[command](player, fields)
	} else if g.aliases[command] != nil {
		reply = g.aliases[command](player, fields)
	} else {
		// one liners
		switch strings.ToLower(command) {
		case "ping":
			reply = ",beef"
		case "help":
			reply = g.help()
		case "strongest":
			reply = fmt.Sprintf("stronk: %s", g.Strongest())
		case "healthiest":
			reply = fmt.Sprintf("healthy: %s", g.Healthiest())
		case "losers":
			reply = fmt.Sprintf("%s losers: %s", currency, g.TopLost())
		case "richest":
			reply = fmt.Sprintf("%s holders: %s", currency, g.TopTen())
		case "bankruptest":
			reply = fmt.Sprintf("times bankrupt: %s", g.Bankrupest())
		case "source":
			reply = "https://git.circuitco.de/self/watbot"
		}
	}
	if g.lifeCommands[command] != nil {
		if !player.Conscious() {
			reply = unconscious
		} else {
			reply = g.lifeCommands[command](player, fields)
		}
	}
	g.bot.reply(m, reply)
}

func (g *WatGame) help() string {
	ret := ""
	for cmd, _ := range g.commands {
		if len(ret) > 0 {
			ret += ", "
		}
		ret += cmd
	}
	ret += strings.Join(g.simpleCommands, ", ")
	for cmd, _ := range g.lifeCommands {
		if len(ret) > 0 {
			ret += ", "
		}
		ret += cmd
	}
	return ret
}

func (g *WatGame) RandInt(maxx int64) (uint64, error) {
	bi := big.NewInt(maxx)
	// prevent panic of rand.Int on big numbers
	if bi.BitLen() < 2 {
		return 0, fmt.Errorf("overflow, got %d", bi)
	}
	i, err := rand.Int(rand.Reader, bi)
	if err != nil {
		return 0, err
	}
	return i.Uint64(), nil
}

func (g *WatGame) Heal(player *Player, fields []string) string {
	multiplier := int64(30)
	if len(fields) < 3 {
		return "#heal <player> <coins> - sacrifice your money to me, peasant! i might heal someone!"
	}
	target, e := g.GetTarget("", fields[1])
	if e != "" {
		return e
	}
	a, err := g.Int(fields[2])
	if err != nil {
		return err.Error()
	}
	if a > player.Coins {
		return "u poor lol"
	}
	amount := int64(a)
	if amount < multiplier {
		return fmt.Sprintf("too cheap lol at least %d", multiplier)
	}
	target.Health += amount / multiplier
	player.Coins -= a
	if target.Nick == player.Nick {
		target.Coins -= a
		g.db.Update(target)
	} else {
		g.db.Update(target, player)
	}
	fmtStr := "%s throws %d on the dirt. %s picks it up and waves their hand across %s, healing them. %s now has %d health."
	return fmt.Sprintf(fmtStr, player.Nick, amount, g.bot.Nick, target.Nick, target.Nick, target.Health)
}

func (g *WatGame) Dice(player *Player, fields []string) string {
	roll := uint64(6)
	if len(fields) > 1 {
		i, e := g.Int(fields[1])
		if e == nil {
			roll = i
		}
	}
	answer, err := g.RandInt(int64(roll))
	if e := handleError(err); e != "" {
		return e
	}
	return fmt.Sprintf("1d%d - %d", roll + 1, answer)
}

type PositiveError struct{}
type ParseIntError struct {
	original string
}

func (e PositiveError) Error() string { return "i don't do negative numbers lol" }
func (e ParseIntError) Error() string { return fmt.Sprintf("wat kinda number is %s", e.original) }

func (g *WatGame) Int(str string) (uint64, error) {
	i, e := strconv.ParseUint(str, 10, 64)
	if i < 0 {
		return 0, PositiveError{}
	}
	if e != nil {
		e = ParseIntError{str}
	}
	return i, e
}

func (g *WatGame) Roll(player *Player, fields []string) string {
	if len(fields) < 2 {
		return fmt.Sprintf("roll <%s> pls - u must score < 50 if u want 2 win. u can also pick the dice size", currency)
	}
	amount, e := g.Int(fields[1])
	if e != nil {
		return e.Error()
	}
	dieSize := int64(100)
	if len(fields) >= 3 {
		userDieSize, e := g.Int(fields[2])
		if e == nil && userDieSize >= 2 {
			dieSize = int64(userDieSize)
		}
	}
	lotteryNum := int64(-1)
	if dieSize > 100 {
		lotteryNumRand, randErr := g.RandInt(dieSize)
		if e := handleError(randErr); e != "" {
			return e
		}
		lotteryNum = int64(lotteryNumRand) + 1
	}
	if amount > player.Coins {
		return "wat? brokeass"
	}
	nRand, randErr := g.RandInt(dieSize)
	if e := handleError(randErr); e != "" {
		return e
	}
	n := int64(nRand) + 1
	ret := fmt.Sprintf("%s rolls the %d sided die... %d! ", player.Nick, dieSize, n)
	if n == lotteryNum {
		player.Coins += player.Coins
		ret += fmt.Sprintf("You won the wattery! Your bet was ignored, but your bank balance was doubled!")
	} else if n < dieSize/2 {
		player.Coins += amount
		ret += fmt.Sprintf("You win! ◕ ◡ ◕ total: %d %s", player.Coins, currency)
	} else {
		player.LoseCoins(amount)
		g.me.Coins += amount
		g.db.Update(g.me)
		ret += fmt.Sprintf("You lose! ≧ヮ≦ %d %s left...", player.Coins, currency)
	}
	g.db.Update(player)
	return ret
}

func (g *WatGame) Bankrupt(player *Player, fields []string) string {
	if player.Coins > 10 {
		return fmt.Sprintf("hmm, with %d %s, you're too rich. go get poor.", player.Coins, currency)
	}
	minTime := int64(7200)
	if !g.CanAct(player, Action_Bankrupt, minTime) {
		return "pity is only valid once every 2 hours"
	}
	player.Coins += 50
	player.Bankrupcy += 1
	g.db.Act(player, Action_Bankrupt)
	g.db.Update(player)
	return fmt.Sprintf("here's some pity money. you've been bankrupt %d times.", player.Bankrupcy)
}

func (g *WatGame) Punch(player *Player, fields []string) string {
	if len(fields) < 2 {
		return "punch <target> pls"
	}
	target, err := g.GetTarget(player.Nick, fields[1])
	if err != "" {
		return err
	}
	if !target.Conscious() {
		return "wat? you're punching someone who is already unconscious. u crazy?"
	}
	chance, randErr := g.RandInt(6)
	if e := handleError(randErr); e != "" {
		return e
	}
	dmg, randErr := g.RandInt(6)
	if e := handleError(randErr); e != "" {
		return e
	}
	dmg = dmg + 1
	ret := fmt.Sprintf("%s rolls a d6... %s ", player.Nick, player.Nick)
	dmg += uint64(player.Level(player.Anarchy))
	if chance + 1 > 3 {
		ret += fmt.Sprintf("hits %s for %d points of damage! ", target.Nick, dmg)
		target.Health -= int64(dmg)
		g.db.Update(target)
		if target.Health <= 0 {
			ret += target.Nick + " has fallen unconscious."
		} else {
			ret += fmt.Sprintf("%s has %dHP left", target.Nick, target.Health)
		}
	} else {
		ret += fmt.Sprintf("fumbles, and punches themselves in confusion! %d self-damage. ", dmg)
		player.Health -= int64(dmg * 2)
		player.Anarchy -= 1
		if player.Health <= 0 {
			ret += player.Nick + " has fallen unconscious."
		} else {
			ret += fmt.Sprintf("%s has %dHP left", player.Nick, player.Health)
		}
		g.db.Update(player)
	}
	return ret
}

func (g *WatGame) Frame(player *Player, fields []string) string {
	if len(fields) < 3 {
		return fmt.Sprintf("frame <nick> <%s> - d6 roll. Sneaky? You force the target to pay me. Clumsy? You pay a fine to the target and myself.", currency)
	}
	amount, e := g.Int(fields[2])
	if e != nil {
		return e.Error()
	}
	if player.Coins < amount {
		return "wat? you too poor for that."
	}
	target, err := g.GetTarget(player.Nick, fields[1])
	if err != "" {
		return err
	}
	if target.Coins < amount {
		return fmt.Sprintf("wat? %s is too poor for this.", target.Nick)
	}
	n, randErr := g.RandInt(6)
	if e := handleError(randErr); e != "" {
		return e
	}
	n = n + 1
	ret := fmt.Sprintf("%s rolls a d6 to frame %s with %d %s: It's a %d! (<3 wins). ", player.Nick, target.Nick, amount, currency, n)
	if n < 3 {
		ret += fmt.Sprintf("You frame %s for a minor crime. They pay me %d.", target.Nick, amount)
		player.Anarchy += 1
		target.Coins -= amount
	} else {
		ret += fmt.Sprintf("You were caught and pay them %d. %s gets the rest.", (amount / 2), g.bot.Nick)
		player.LoseCoins(amount)
		target.Coins += amount / 2
		g.me.Coins += amount / 2
		g.db.Update(g.me)
	}
	g.db.Update(player, target)
	return ret
}

func (g *WatGame) Steal(player *Player, fields []string) string {
	if len(fields) < 3 {
		return fmt.Sprintf("steal <nick> <%s> - d6 roll. If you fail, you pay double the %s to %s", currency, currency, g.bot.Nick)
	}
	amount, e := g.Int(fields[2])
	if e != nil {
		return e.Error()
	}
	if player.Coins < amount*2 {
		return "wat? you need double what ur trying 2 steal or you'll go bankrupt..."
	}
	target, err := g.GetTarget(player.Nick, fields[1])
	if target == nil {
		return err
	}
	if target.Coins < amount {
		return fmt.Sprintf("wat? %s is poor and doesn't have that much to steal. (%d %s)", target.Nick, target.Coins, currency)
	}
	n, randErr := g.RandInt(6)
	if e := handleError(randErr); e != "" {
		return e
	}
	n = n + 1
	ret := fmt.Sprintf("%s is trying to steal %d %s from %s... ", player.Nick, amount, currency, target.Nick)
	if n < 3 {
		ret += "You did it! Sneaky bastard!"
		player.Coins += amount
		player.Anarchy += 1
		target.Coins -= amount
		g.db.Update(target)
	} else {
		ret += fmt.Sprintf("You were caught and I took %d %s from your pocket.", (amount * 2), currency)
		player.LoseCoins(amount * 2)
		g.me.Coins += amount * 2
		g.db.Update(g.me)
	}
	g.db.Update(player)
	return ret
}

func (g *WatGame) GetTarget(player, target string) (*Player, string) {
	t := g.db.User(strings.ToLower(target), "", false)
	if t.Nick == "" {
		return nil, "Who? wat?"
	}
	if t.Nick == player {
		return nil, "You can't do that to yourself, silly."
	}
	return &t, ""
}

func (g *WatGame) Leech(player *Player, fields []string) string {
	divisor := uint64(10)
	if len(fields) < 3 {
		return fmt.Sprintf("leech <nick> <%s> - using your wealth, you steal the life force of another player", currency)
	}
	amount, er := g.Int(fields[2])
	if amount < divisor {
		return fmt.Sprintf("wat? its %d %s for 1 hp", divisor, currency)
	}
	if player.Coins < amount || er != nil {
		return "wat great fortune do you think you have? poor wats shouldn't be doing this, wat a waste..."
	}
	target, err := g.GetTarget(player.Nick, fields[1])
	if err != "" {
		return err
	}
	r, randErr := g.RandInt(10)
	if e := handleError(randErr); e != "" {
		return e
	}
	r = r + 1
	reply := fmt.Sprintf("You muster your wealth and feed it to %s. ", g.bot.Nick)
	hpDown := amount / divisor
	player.Coins -= amount
	if r < 5 {
		target.Health -= int64(hpDown)
		player.Health += int64(hpDown)
		player.Anarchy += 1
		reply += fmt.Sprintf("The deal is done, you took %d HP from %s. They now have %d HP, you have %d.", hpDown, target.Nick, target.Health, player.Health)
		g.db.Update(target, player)
	} else {
		reply += "The gods do not smile upon you this waturday. Your money vanishes and nothing happens."
	}
	return reply
}

func (g *WatGame) Rest(player *Player, fields []string) string {
	minRest := int64(43200)
	delta := time.Now().Unix() - player.LastRested
	ret := ""
	if player.LastRested == 0 {
		ret = "you've never slept before - you sleep so well, your injuries are cured and your health is restored to 10"
		player.Health = 10
		player.LastRested = time.Now().Unix()
		g.db.Update(player)
	} else if delta < minRest {
		ret = fmt.Sprintf("wat were you thinking, sleeping at a time like this (%d until next rest)", minRest-delta)
	} else {
		value, randErr := g.RandInt(10)
		if e := handleError(randErr); e != "" {
			return e
		}
		value = value + 1
		if player.Health < -5 {
			player.Health = 1
			ret = fmt.Sprintf("wow ur beat up. i pity u, ur health is now 1.")
		} else {
			player.Health += int64(value)
			ret = fmt.Sprintf("wat a nap - have back a random amount of hitpoints (this time it's %d, you've got %d hp)", value, player.Health)
		}
		player.LastRested = time.Now().Unix()
		g.db.Update(player)
	}
	return ret
}

func (g *WatGame) CanAct(player *Player, action ActionType, minTime int64) bool {
	delta := g.db.LastActed(player, action)
	if minTime != 0 && delta != 0 && time.Now().Unix()-delta < minTime {
		return false
	}
	return true
}

func (g *WatGame) Bench(player *Player, fields []string) string {
	minTime := int64(115200)
	if !g.CanAct(player, Action_Lift, minTime) {
		return "you're tired. no more lifting for now."
	}
	weight, randErr := g.RandInt(370)
	if e := handleError(randErr); e != "" {
		return e
	}
	weight = weight + 50
	reps, randErr := g.RandInt(10)
	if e := handleError(randErr); e != "" {
		return e
	}
	value := int64(0)
	reply := fmt.Sprintf("%s benches %dwatts for %d reps, ", player.Nick, weight, reps)
	if weight < 150 {
		reply += "do u even lift bro?"
		return reply
	} else if weight < 250 {
		value = 1
	} else if weight < 420 {
		value = 2
	} else if weight == 420 {
		value = 10
		reply += "four twenty blaze it bro! "
	}
	if g.roid[player.Nick] != 0 {
		delete(g.roid, player.Nick)
		success, randErr := g.RandInt(2)
		if randErr != nil {
			return "woops"
		}
		if success != 0 {
			player.Health = 0
			player.Anarchy -= 10
			g.db.Act(player, Action_Lift)
			g.db.Update(player)
			return fmt.Sprintf("%s tried to lift %d but halfway through their %d reps, their heart literally exploded from steroid use. They are now unconscious.", player.Nick, weight, reps)
		} else {
			reply += fmt.Sprintf("roid rage increased the effectiveness! ")
			value *= 2
		}
	}
	g.db.Act(player, Action_Lift)
	player.Anarchy += value
	g.db.Update(player)
	reply += fmt.Sprintf("ur %d stronger lol", value)
	return reply
}

func (g *WatGame) Riot(player *Player, fields []string) string {
	if !g.CanAct(player, Action_Riot, int64((48 * time.Hour).Seconds())) {
		return "Planning a riot takes time and the right circumstances. Be prepared. (nothing happens)"
	}
	r, randErr := g.RandInt(100)
	if e := handleError(randErr); e != "" {
		return e
	}
	reply := ""
	if r > 40 {
		player.Anarchy += 3
		reply = fmt.Sprintf("%s has successfully smashed the state! The brogeoise have been toppled. You feel stronger...", player.Nick)
	} else {
		player.Health -= 3
		reply = fmt.Sprintf("The proletariat have been hunted down by the secret police and had their faces smashed in! Your rebellion fails and you lose 3HP.")
	}
	g.db.Act(player, Action_Riot)
	g.db.Update(player)
	return reply
}

func (g *WatGame) Send(player *Player, fields []string) string {
	if len(fields) < 3 {
		return fmt.Sprintf("You forgot somethin'. send <nick> <%s>", currency)
	}
	amount, err := g.Int(fields[2])
	if err != nil {
		return err.Error()
	}
	if amount > player.Coins {
		return "wat? you're too poor!"
	}
	target, str := g.GetTarget(player.Nick, fields[1])
	if target == nil {
		return str
	}
	player.Coins -= amount
	target.Coins += amount
	g.db.Update(player, target)
	return fmt.Sprintf("%s sent %s %d %s. %s has %d %s, %s has %d %s", player.Nick, target.Nick, amount, currency, player.Nick, player.Coins, currency, target.Nick, target.Coins, currency)
}

func (g *WatGame) Mine(player *Player, _ []string) string {
	delta := uint64(time.Now().Unix() - player.LastMined)
	minDelta := uint64(600)
	if delta < minDelta {
		return fmt.Sprintf("wat? 2 soon. u earn more when u wait long (%d)", delta)
	}
	value := uint64(0)
	if delta < 36000 {
		value = delta / minDelta
	} else if delta < 86400 {
		value = 25
	} else if delta < 2592000 {
		value = 50
	} else {
		value = 1000
	}
	msg := ""
	if player.LastMined == 0 {
		msg = fmt.Sprintf("u forgot ur pickaxe but it's okay i'll give you one in %d", minDelta)
		value = 0
	} else {
		player.Coins += value
		msg = fmt.Sprintf("%s mined %d %s for %d and has %d %s", player.Nick, value, currency, delta, player.Coins, currency)
	}
	player.LastMined = time.Now().Unix()
	g.db.Update(player)
	return msg
}

func (g *WatGame) Steroid(player *Player, fields []string) string {
	if g.roid[player.Nick] != 0 {
		return "Taking more than the recommended amount of steroids is, well, not recommended."
	}
	g.roid[player.Nick] = 1
	return fmt.Sprintf("%s has eaten anabolic steroids. While they're good for building strength, it's dangerous to lift heavy weights. I hope you know what you're doing...", player.Nick)
}

func (g *WatGame) Watch(player *Player, fields []string) string {
	if len(fields) > 1 {
		maybePlayer, err := g.GetTarget("", fields[1])
		if err != "" {
			return err
		}
		player = maybePlayer
	}
	return fmt.Sprintf("%s's Strength: %d (%d) / Coins: %d / Health: %d", player.Nick, player.Level(player.Anarchy), player.Anarchy, player.Coins, player.Health)
}

func (g *WatGame) Balance(player *Player, fields []string) string {
	balStr := "%s's %s balance: %d. Mining time credit: %d. Total lost: %d. Bankrupt %d times."
	balPlayer := player
	if len(fields) > 1 {
		var err string
		balPlayer, err = g.GetTarget("", fields[1])
		if err != "" {
			return err
		}
	}
	return fmt.Sprintf(balStr, balPlayer.Nick, currency, balPlayer.Coins, time.Now().Unix()-balPlayer.LastMined, balPlayer.CoinsLost, balPlayer.Bankrupcy)
}

func (g *WatGame) Strongest() string {
	players := g.db.Strongest()
	ret := ""
	for _, p := range players {
		ret += PrintTwo(p.Nick, uint64(p.Anarchy))
	}
	return ret
}

func (g *WatGame) Healthiest() string {
	players := g.db.Healthiest()
	ret := ""
	for _, p := range players {
		ret += PrintTwo(p.Nick, uint64(p.Health))
	}
	return ret
}

func (g *WatGame) TopLost() string {
	players := g.db.TopLost()
	ret := ""
	for _, p := range players {
		ret += PrintTwo(p.Nick, p.CoinsLost)
	}
	return ret
}

func (g *WatGame) Bankrupest() string {
	players := g.db.Bankruptest()
	ret := ""
	for _, p := range players {
		ret += fmt.Sprintf("%s (%d) ", CleanNick(p.Nick), p.Bankrupcy)
	}
	return ret
}

func (g *WatGame) TopTen() string {
	players := g.db.TopTen()
	ret := ""
	for _, p := range players {
		ret += PrintTwo(p.Nick, p.Coins)
	}
	return ret
}

func PrintTwo(nick string, value uint64) string {
	return fmt.Sprintf("%s (%d) ", CleanNick(nick), value)
}

func (g *WatGame) megaWat(player *Player, _ []string) string {
	mega, randErr := g.RandInt(1000000)
	if e := handleError(randErr); e != "" {
		return e + " mega fail"
	}
	mega = mega + 1
	kilo, randErr := g.RandInt(1000)
	if e := handleError(randErr); e != "" {
		return e + " kilo fail"
	}
	kilo = kilo + 1
	ten, randErr := g.RandInt(100)
	if e := handleError(randErr); e != "" {
		return e + " ten fail"
	}
	ten = ten + 1
	reply := ""
	if mega == 23 {
		player.Coins += 1000000
		reply = fmt.Sprintf("OMGWATWATWAT!!!! %s has won the MegaWat lottery and gains 1000000 %s!", player.Nick, currency)
	}
	if kilo == 5 {
		player.Coins += 1000
		reply = fmt.Sprintf("OMGWAT! %s has won the KiloWat lottery and gains 1000 %s!", player.Nick, currency)
	}
	if ten == 10 {
		player.Coins += 10
		reply = fmt.Sprintf("%s won the regular wattery. This one only pays 10 %s.", player.Nick, currency)
	}
	player.Watting += 1
	g.db.Update(player)
	return reply
}