package channelserver

import (
	_config "erupe-ce/config"
	"math"
	"strings"
	"time"

	"go.uber.org/zap"

	"erupe-ce/common/byteframe"
	"erupe-ce/common/stringsupport"
	"erupe-ce/network/mhfpacket"
)

// TowerInfoTRP represents tower RP (points) info.
type TowerInfoTRP struct {
	TR  int32
	TRP int32
}

// TowerInfoSkill represents tower skill info.
type TowerInfoSkill struct {
	TSP    int32
	Skills []int16 // 64
}

// TowerInfoHistory represents tower clear history.
type TowerInfoHistory struct {
	Unk0 []int16 // 5
	Unk1 []int16 // 5
}

// TowerInfoLevel represents tower level info.
type TowerInfoLevel struct {
	Floors int32
	Unk1   int32
	Unk2   int32
	Unk3   int32
}

// EmptyTowerCSV creates an empty CSV string of the given length.
func EmptyTowerCSV(len int) string {
	temp := make([]string, len)
	for i := range temp {
		temp[i] = "0"
	}
	return strings.Join(temp, ",")
}

func handleMsgMhfGetTowerInfo(s *Session, p mhfpacket.MHFPacket) {
	pkt := p.(*mhfpacket.MsgMhfGetTowerInfo)
	var data []*byteframe.ByteFrame
	type TowerInfo struct {
		TRP     []TowerInfoTRP
		Skill   []TowerInfoSkill
		History []TowerInfoHistory
		Level   []TowerInfoLevel
	}

	towerInfo := TowerInfo{
		TRP:     []TowerInfoTRP{{0, 0}},
		Skill:   []TowerInfoSkill{{0, make([]int16, 64)}},
		History: []TowerInfoHistory{{make([]int16, 5), make([]int16, 5)}},
		Level:   []TowerInfoLevel{{0, 0, 0, 0}, {0, 0, 0, 0}},
	}

	td, err := s.server.towerRepo.GetTowerData(s.charID)
	if err != nil {
		s.logger.Error("Failed to initialize tower data", zap.Error(err))
	} else {
		towerInfo.TRP[0].TR = td.TR
		towerInfo.TRP[0].TRP = td.TRP
		towerInfo.Skill[0].TSP = td.TSP
		towerInfo.Level[0].Floors = td.Block1
		towerInfo.Level[1].Floors = td.Block2
	}

	if s.server.erupeConfig.RealClientMode <= _config.G7 {
		towerInfo.Level = towerInfo.Level[:1]
	}

	for i, skill := range stringsupport.CSVElems(td.Skills) {
		if skill < math.MinInt16 || skill > math.MaxInt16 {
			continue
		}
		towerInfo.Skill[0].Skills[i] = int16(skill)
	}

	switch pkt.InfoType {
	case 1:
		for _, trp := range towerInfo.TRP {
			bf := byteframe.NewByteFrame()
			bf.WriteInt32(trp.TR)
			bf.WriteInt32(trp.TRP)
			data = append(data, bf)
		}
	case 2:
		for _, skills := range towerInfo.Skill {
			bf := byteframe.NewByteFrame()
			bf.WriteInt32(skills.TSP)
			for i := range skills.Skills {
				bf.WriteInt16(skills.Skills[i])
			}
			data = append(data, bf)
		}
	case 4:
		for _, history := range towerInfo.History {
			bf := byteframe.NewByteFrame()
			for i := range history.Unk0 {
				bf.WriteInt16(history.Unk0[i])
			}
			for i := range history.Unk1 {
				bf.WriteInt16(history.Unk1[i])
			}
			data = append(data, bf)
		}
	case 3, 5:
		for _, level := range towerInfo.Level {
			bf := byteframe.NewByteFrame()
			bf.WriteInt32(level.Floors)
			bf.WriteInt32(level.Unk1)
			bf.WriteInt32(level.Unk2)
			bf.WriteInt32(level.Unk3)
			data = append(data, bf)
		}
	}
	doAckEarthSucceed(s, pkt.AckHandle, data)
}

func handleMsgMhfPostTowerInfo(s *Session, p mhfpacket.MHFPacket) {
	pkt := p.(*mhfpacket.MsgMhfPostTowerInfo)

	if s.server.erupeConfig.DebugOptions.QuestTools {
		s.logger.Debug(
			p.Opcode().String(),
			zap.Uint32("InfoType", pkt.InfoType),
			zap.Uint32("Unk1", pkt.Unk1),
			zap.Int32("Skill", pkt.Skill),
			zap.Int32("TR", pkt.TR),
			zap.Int32("TRP", pkt.TRP),
			zap.Int32("Cost", pkt.Cost),
			zap.Int32("Unk6", pkt.Unk6),
			zap.Int32("Unk7", pkt.Unk7),
			zap.Int32("Block1", pkt.Block1),
			zap.Int64("Unk9", pkt.Unk9),
		)
	}

	switch pkt.InfoType {
	case 2:
		skills, _ := s.server.towerRepo.GetSkills(s.charID)
		newSkills := stringsupport.CSVSetIndex(skills, int(pkt.Skill), stringsupport.CSVGetIndex(skills, int(pkt.Skill))+1)
		if err := s.server.towerRepo.UpdateSkills(s.charID, newSkills, pkt.Cost); err != nil {
			s.logger.Error("Failed to update tower skills", zap.Error(err))
		}
	case 1, 7:
		// This might give too much TSP? No idea what the rate is supposed to be
		if err := s.server.towerRepo.UpdateProgress(s.charID, pkt.TR, pkt.TRP, pkt.Cost, pkt.Block1); err != nil {
			s.logger.Error("Failed to update tower progress", zap.Error(err))
		}
	}
	doAckSimpleSucceed(s, pkt.AckHandle, make([]byte, 4))
}

// Default missions
var tenrouiraiData = []TenrouiraiData{
	{1, 1, 80, 0, 2, 2, 1, 1, 2, 2},
	{1, 4, 16, 0, 2, 2, 1, 1, 2, 2},
	{1, 6, 50, 0, 2, 2, 1, 0, 2, 2},
	{1, 4, 12, 50, 2, 2, 1, 1, 2, 2},
	{1, 3, 50, 0, 2, 2, 1, 1, 2, 2},
	{2, 5, 40000, 0, 2, 2, 1, 0, 2, 2},
	{1, 5, 50000, 50, 2, 2, 1, 1, 2, 2},
	{2, 1, 60, 0, 2, 2, 1, 1, 2, 2},
	{2, 3, 50, 0, 2, 1, 1, 0, 1, 2},
	{2, 3, 40, 50, 2, 1, 1, 1, 1, 2},
	{2, 4, 12, 0, 2, 1, 1, 1, 1, 2},
	{2, 6, 40, 0, 2, 1, 1, 0, 1, 2},
	{1, 1, 60, 50, 2, 1, 2, 1, 1, 2},
	{1, 5, 50000, 0, 3, 1, 2, 1, 1, 2},
	{1, 6, 50, 0, 3, 1, 2, 0, 1, 2},
	{1, 4, 16, 50, 3, 1, 2, 1, 1, 2},
	{1, 5, 50000, 0, 3, 1, 2, 1, 1, 2},
	{2, 3, 40, 0, 3, 1, 2, 0, 1, 2},
	{1, 3, 50, 50, 3, 1, 2, 1, 1, 2},
	{2, 5, 40000, 0, 3, 1, 2, 1, 1, 1},
	{2, 6, 40, 0, 3, 1, 2, 0, 1, 1},
	{2, 1, 60, 50, 3, 1, 2, 1, 1, 1},
	{2, 6, 50, 0, 3, 1, 2, 1, 1, 1},
	{2, 4, 12, 0, 3, 1, 2, 0, 1, 1},
	{1, 1, 80, 50, 3, 1, 2, 1, 1, 1},
	{1, 5, 40000, 0, 3, 1, 2, 1, 1, 1},
	{1, 3, 50, 0, 3, 1, 2, 0, 1, 1},
	{1, 4, 16, 50, 3, 1, 0, 1, 1, 1},
	{1, 6, 50, 0, 3, 1, 0, 1, 1, 1},
	{2, 3, 40, 0, 3, 1, 0, 1, 1, 1},
	{1, 1, 80, 50, 3, 1, 0, 0, 1, 1},
	{2, 5, 40000, 0, 3, 1, 0, 0, 1, 1},
	{2, 6, 40, 0, 3, 1, 0, 0, 1, 1},
}

// TenrouiraiProgress represents Tenrouirai (sky corridor) progress.
type TenrouiraiProgress struct {
	Page     uint8
	Mission1 uint16
	Mission2 uint16
	Mission3 uint16
}

// TenrouiraiReward represents a Tenrouirai reward.
type TenrouiraiReward struct {
	Index    uint8
	Item     []uint16 // 5
	Quantity []uint8  // 5
}

// TenrouiraiKeyScore represents a Tenrouirai key score.
type TenrouiraiKeyScore struct {
	Unk0 uint8
	Unk1 int32
}

// TenrouiraiData represents Tenrouirai data.
type TenrouiraiData struct {
	Block   uint8
	Mission uint8
	// 1 = Floors climbed
	// 2 = Collect antiques
	// 3 = Open chests
	// 4 = Cats saved
	// 5 = TRP acquisition
	// 6 = Monster slays
	Goal   uint16
	Cost   uint16
	Skill1 uint8 // 80
	Skill2 uint8 // 40
	Skill3 uint8 // 40
	Skill4 uint8 // 20
	Skill5 uint8 // 40
	Skill6 uint8 // 50
}

// TenrouiraiCharScore represents a Tenrouirai per-character score.
type TenrouiraiCharScore struct {
	Score int32
	Name  string
}

// TenrouiraiTicket represents a Tenrouirai ticket entry.
type TenrouiraiTicket struct {
	Unk0 uint8
	RP   uint32
	Unk2 uint32
}

// Tenrouirai represents complete Tenrouirai data.
type Tenrouirai struct {
	Progress  []TenrouiraiProgress
	Reward    []TenrouiraiReward
	KeyScore  []TenrouiraiKeyScore
	Data      []TenrouiraiData
	CharScore []TenrouiraiCharScore
	Ticket    []TenrouiraiTicket
}

func handleMsgMhfGetTenrouirai(s *Session, p mhfpacket.MHFPacket) {
	pkt := p.(*mhfpacket.MsgMhfGetTenrouirai)
	var data []*byteframe.ByteFrame

	tenrouirai := Tenrouirai{
		Progress: []TenrouiraiProgress{{1, 0, 0, 0}},
		Data:     tenrouiraiData,
		Ticket:   []TenrouiraiTicket{{0, 0, 0}},
	}

	switch pkt.DataType {
	case 1:
		for _, tdata := range tenrouirai.Data {
			bf := byteframe.NewByteFrame()
			bf.WriteUint8(tdata.Block)
			bf.WriteUint8(tdata.Mission)
			bf.WriteUint16(tdata.Goal)
			bf.WriteUint16(tdata.Cost)
			bf.WriteUint8(tdata.Skill1)
			bf.WriteUint8(tdata.Skill2)
			bf.WriteUint8(tdata.Skill3)
			bf.WriteUint8(tdata.Skill4)
			bf.WriteUint8(tdata.Skill5)
			bf.WriteUint8(tdata.Skill6)
			data = append(data, bf)
		}
	case 2:
		for _, reward := range tenrouirai.Reward {
			bf := byteframe.NewByteFrame()
			bf.WriteUint8(reward.Index)
			bf.WriteUint16(reward.Item[0])
			bf.WriteUint16(reward.Item[1])
			bf.WriteUint16(reward.Item[2])
			bf.WriteUint16(reward.Item[3])
			bf.WriteUint16(reward.Item[4])
			bf.WriteUint8(reward.Quantity[0])
			bf.WriteUint8(reward.Quantity[1])
			bf.WriteUint8(reward.Quantity[2])
			bf.WriteUint8(reward.Quantity[3])
			bf.WriteUint8(reward.Quantity[4])
			data = append(data, bf)
		}
	case 4:
		progress, err := s.server.towerRepo.GetTenrouiraiProgress(pkt.GuildID)
		if err != nil {
			s.logger.Error("Failed to read tower mission page", zap.Error(err))
		} else {
			tenrouirai.Progress[0].Page = progress.Page
			tenrouirai.Progress[0].Mission1 = progress.Mission1
			tenrouirai.Progress[0].Mission2 = progress.Mission2
			tenrouirai.Progress[0].Mission3 = progress.Mission3
		}

		if tenrouirai.Progress[0].Page < 1 {
			tenrouirai.Progress[0].Page = 1
		}
		if tenrouirai.Progress[0].Mission1 > tenrouiraiData[(tenrouirai.Progress[0].Page*3)-3].Goal {
			tenrouirai.Progress[0].Mission1 = tenrouiraiData[(tenrouirai.Progress[0].Page*3)-3].Goal
		}
		if tenrouirai.Progress[0].Mission2 > tenrouiraiData[(tenrouirai.Progress[0].Page*3)-2].Goal {
			tenrouirai.Progress[0].Mission2 = tenrouiraiData[(tenrouirai.Progress[0].Page*3)-2].Goal
		}
		if tenrouirai.Progress[0].Mission3 > tenrouiraiData[(tenrouirai.Progress[0].Page*3)-1].Goal {
			tenrouirai.Progress[0].Mission3 = tenrouiraiData[(tenrouirai.Progress[0].Page*3)-1].Goal
		}

		for _, progress := range tenrouirai.Progress {
			bf := byteframe.NewByteFrame()
			bf.WriteUint8(progress.Page)
			bf.WriteUint16(progress.Mission1)
			bf.WriteUint16(progress.Mission2)
			bf.WriteUint16(progress.Mission3)
			data = append(data, bf)
		}
	case 5:
		scores, err := s.server.towerRepo.GetTenrouiraiMissionScores(pkt.GuildID, pkt.MissionIndex)
		if err != nil {
			s.logger.Error("Failed to query tower mission scores", zap.Error(err))
		}
		for _, charScore := range scores {
			bf := byteframe.NewByteFrame()
			bf.WriteInt32(charScore.Score)
			bf.WriteBytes(stringsupport.PaddedString(charScore.Name, 14, true))
			data = append(data, bf)
		}
	case 6:
		rp, _ := s.server.towerRepo.GetGuildTowerRP(pkt.GuildID)
		tenrouirai.Ticket[0].RP = rp
		for _, ticket := range tenrouirai.Ticket {
			bf := byteframe.NewByteFrame()
			bf.WriteUint8(ticket.Unk0)
			bf.WriteUint32(ticket.RP)
			bf.WriteUint32(ticket.Unk2)
			data = append(data, bf)
		}
	}

	doAckEarthSucceed(s, pkt.AckHandle, data)
}

func handleMsgMhfPostTenrouirai(s *Session, p mhfpacket.MHFPacket) {
	pkt := p.(*mhfpacket.MsgMhfPostTenrouirai)

	if s.server.erupeConfig.DebugOptions.QuestTools {
		s.logger.Debug(
			p.Opcode().String(),
			zap.Uint8("Unk0", pkt.Unk0),
			zap.Uint8("Op", pkt.Op),
			zap.Uint32("GuildID", pkt.GuildID),
			zap.Uint8("Unk1", pkt.Unk1),
			zap.Uint16("Floors", pkt.Floors),
			zap.Uint16("Antiques", pkt.Antiques),
			zap.Uint16("Chests", pkt.Chests),
			zap.Uint16("Cats", pkt.Cats),
			zap.Uint16("TRP", pkt.TRP),
			zap.Uint16("Slays", pkt.Slays),
		)
	}

	if pkt.Op == 2 {
		page, donated, err := s.server.towerRepo.GetGuildTowerPageAndRP(pkt.GuildID)
		if err != nil {
			s.logger.Error("Failed to read guild tower state for donation", zap.Error(err))
			doAckSimpleSucceed(s, pkt.AckHandle, make([]byte, 4))
			return
		}

		var requirement int
		for i := 0; i < (page*3)+1; i++ {
			requirement += int(tenrouiraiData[i].Cost)
		}

		bf := byteframe.NewByteFrame()

		sd, err := GetCharacterSaveData(s, s.charID)
		if err == nil && sd != nil {
			sd.RP -= pkt.DonatedRP
			sd.Save(s)
			if donated+int(pkt.DonatedRP) >= requirement {
				if err := s.server.towerRepo.AdvanceTenrouiraiPage(pkt.GuildID); err != nil {
					s.logger.Error("Failed to advance tower mission page", zap.Error(err))
				}
				pkt.DonatedRP = uint16(requirement - donated)
			}
			bf.WriteUint32(uint32(pkt.DonatedRP))
			if err := s.server.towerRepo.DonateGuildTowerRP(pkt.GuildID, pkt.DonatedRP); err != nil {
				s.logger.Error("Failed to update guild tower RP", zap.Error(err))
			}
		} else {
			bf.WriteUint32(0)
		}

		doAckSimpleSucceed(s, pkt.AckHandle, bf.Data())
	} else {
		doAckSimpleSucceed(s, pkt.AckHandle, make([]byte, 4))
	}
}

func handleMsgMhfPresentBox(s *Session, p mhfpacket.MHFPacket) {
	pkt := p.(*mhfpacket.MsgMhfPresentBox)
	var data []*byteframe.ByteFrame
	/*
		bf.WriteUint32(0)
		bf.WriteInt32(0)
		bf.WriteInt32(0)
		bf.WriteInt32(0)
		bf.WriteInt32(0)
		bf.WriteInt32(0)
		bf.WriteInt32(0)
		bf.WriteInt32(0)
		bf.WriteInt32(0)
		bf.WriteInt32(0)
		bf.WriteInt32(0)
	*/
	doAckEarthSucceed(s, pkt.AckHandle, data)
}

// GemInfo represents gem (decoration) info.
type GemInfo struct {
	Gem      uint16
	Quantity uint16
}

// GemHistory represents gem usage history.
type GemHistory struct {
	Gem       uint16
	Message   uint16
	Timestamp time.Time
	Sender    string
}

func handleMsgMhfGetGemInfo(s *Session, p mhfpacket.MHFPacket) {
	pkt := p.(*mhfpacket.MsgMhfGetGemInfo)
	var data []*byteframe.ByteFrame
	gemInfo := []GemInfo{}
	gemHistory := []GemHistory{}

	tempGems, _ := s.server.towerRepo.GetGems(s.charID)
	for i, v := range stringsupport.CSVElems(tempGems) {
		if v < 0 || v > math.MaxUint16 {
			continue
		}
		gemInfo = append(gemInfo, GemInfo{uint16((i / 5 << 8) + (i%5 + 1)), uint16(v)})
	}

	switch pkt.QueryType {
	case 1:
		for _, info := range gemInfo {
			bf := byteframe.NewByteFrame()
			bf.WriteUint16(info.Gem)
			bf.WriteUint16(info.Quantity)
			data = append(data, bf)
		}
	case 2:
		for _, history := range gemHistory {
			bf := byteframe.NewByteFrame()
			bf.WriteUint16(history.Gem)
			bf.WriteUint16(history.Message)
			bf.WriteUint32(uint32(history.Timestamp.Unix()))
			bf.WriteBytes(stringsupport.PaddedString(history.Sender, 14, true))
			data = append(data, bf)
		}
	}
	doAckEarthSucceed(s, pkt.AckHandle, data)
}

func handleMsgMhfPostGemInfo(s *Session, p mhfpacket.MHFPacket) {
	pkt := p.(*mhfpacket.MsgMhfPostGemInfo)

	if s.server.erupeConfig.DebugOptions.QuestTools {
		s.logger.Debug(
			p.Opcode().String(),
			zap.Uint32("Op", pkt.Op),
			zap.Uint32("Unk1", pkt.Unk1),
			zap.Int32("Gem", pkt.Gem),
			zap.Int32("Quantity", pkt.Quantity),
			zap.Int32("CID", pkt.CID),
			zap.Int32("Message", pkt.Message),
			zap.Int32("Unk6", pkt.Unk6),
		)
	}

	switch pkt.Op {
	case 1: // Add gem
		i := int((pkt.Gem >> 8 * 5) + (pkt.Gem - pkt.Gem&0xFF00 - 1%5))
		if err := s.server.towerRepo.AddGem(s.charID, i, int(pkt.Quantity)); err != nil {
			s.logger.Error("Failed to update tower gems", zap.Error(err))
		}
	case 2: // Transfer gem
		// no way im doing this for now
	}
	doAckSimpleSucceed(s, pkt.AckHandle, make([]byte, 4))
}

func handleMsgMhfGetNotice(s *Session, p mhfpacket.MHFPacket) {
	pkt := p.(*mhfpacket.MsgMhfGetNotice)
	doAckSimpleSucceed(s, pkt.AckHandle, make([]byte, 4))
}

func handleMsgMhfPostNotice(s *Session, p mhfpacket.MHFPacket) {
	pkt := p.(*mhfpacket.MsgMhfPostNotice)
	doAckSimpleSucceed(s, pkt.AckHandle, make([]byte, 4))
}