package repo

import (
	"fmt"
	"reflect"
	"strconv"
	"strings"

	"joylink.club/rtsssimulation/repo/dto"
	"joylink.club/rtsssimulation/repo/model"
)

// 城轨uid
type CgUid struct {
	// 城市
	city string
	// 线路
	line string
	// 设备编号
	codes []string
	// codestr
	codestr string
	// uid
	idstr string
}

func NewCgUid(city string, line string, codes ...string) *CgUid {
	if city == "" || line == "" {
		panic(fmt.Errorf("创建城轨uid错误: 城市、线路、车站不能为空 city=%s, line=%s", city, line))
	}
	l := len(codes)
	if l == 0 {
		panic(fmt.Errorf("创建城轨uid错误: codes不能为空"))
	}
	codestr := strings.Join(codes, "_")
	elems := []string{city, line, codestr}
	uid := strings.Join(elems, "_")
	return &CgUid{
		city:    city,
		line:    line,
		codes:   codes,
		codestr: codestr,
		idstr:   uid,
	}
}

func (u *CgUid) Id() string {
	return u.idstr
}

func (u *CgUid) Code() string {
	return u.codestr
}

type idMap struct {
	// 数据id
	Did string
	// 元素id
	Eid uint32
	// 唯一id
	Uid model.Uid
}

func NewIdMap(did string, eid uint32, uid model.Uid) *idMap {
	return &idMap{
		Did: did,
		Eid: eid,
		Uid: uid,
	}
}

func (m *idMap) DeId() string {
	return DeID(m.Did, m.Eid)
}
func (m *idMap) Debug() string {
	return fmt.Sprintf("{数据id=%s, 元素id=%v, uid=%s}", m.Did, m.Eid, m.Uid.Id())
}

// 数据元素id key生成
// did - 数据id
// eid - 元素id
func DeID(did string, eid uint32) string {
	return fmt.Sprintf("%s_%v", did, eid)
}

// id映射表
type IdMapping struct {
	// 数据元素id映射
	deidMap map[string]*idMap
	// uid映射(只存储最初的idMap,实际中一个uid可能对应多个数据元素id)
	uidMap map[string]*idMap
}

func (m *IdMapping) queryByDeId(deid string) *idMap {
	return m.deidMap[deid]
}

func (m *IdMapping) queryByDidAndEid(did string, eid uint32) *idMap {
	id := DeID(did, eid)
	return m.deidMap[id]
}

func (m *IdMapping) add(idmap *idMap) {
	if idmap == nil {
		panic(fmt.Errorf("添加id映射表错误: idmap不能为空"))
	}
	m.deidMap[idmap.DeId()] = idmap
}

func (m *IdMapping) checkUidAndAdd(idmap *idMap) (existed *idMap, uidExisted bool) {
	if idmap == nil {
		panic(fmt.Errorf("添加id映射表错误: idmap不能为空"))
	}
	m.deidMap[idmap.DeId()] = idmap
	existed, ok := m.uidMap[idmap.Uid.Id()]
	if ok {
		uidExisted = true
	} else {
		m.uidMap[idmap.Uid.Id()] = idmap

	}
	return
}

// 构建id映射
func BuildIdMapping(msgs *dto.Repo, errRecord *ErrorRecord) *IdMapping {
	if cg := msgs.GetCgData(); cg != nil {
		return BuildCgIdMapping(cg, errRecord)
	} else if gt := msgs.GetGtData(); gt != nil {
		return BuildGtIdMapping(gt)
	}
	errRecord.AddError("构建id映射表错误: 没有数据")
	return nil
}

// 构建城轨id映射
func BuildCgIdMapping(cg *dto.CGData, errRecord *ErrorRecord) *IdMapping {
	if cg == nil {
		errRecord.AddError("构建城轨id映射表错误: 未关联任何数据")
		return nil
	}
	idMapping := &IdMapping{
		deidMap: make(map[string]*idMap),
		uidMap:  make(map[string]*idMap),
	}
	lineSet := make(map[string]struct{})
	for _, l := range cg.Lines {
		if _, ok := lineSet[l.City+l.LineId]; ok {
			errRecord.AddError(fmt.Sprintf("构建城轨id映射表错误: 线路重复:%s_%s", l.City, l.LineId))
			return nil
		}
		lineSet[l.City+l.LineId] = struct{}{}
	}
	for _, line := range cg.Lines {
		buildXhbz(idMapping, line, errRecord)
		if errRecord.HasError() {
			return nil
		}
	}
	return idMapping
}

// 构建信号布置数据id映射
func buildXhbz(idMapping *IdMapping, line *dto.Line, errRecord *ErrorRecord) {
	xhbz := line.Xhbz
	if xhbz == nil {
		errRecord.AddError("构建城轨id映射表错误: 信号布置数据为空")
		return
	}
	city := line.City     // 城市
	lineId := line.LineId // 线路id
	did := xhbz.Id        // 数据id
	errPrefix := "信号布置数据错误"
	// 车站uid
	for _, station := range xhbz.Stations {
		eid := station.Id
		if checkFieldEmpty(did, eid, station.Name, errPrefix, "车站名称", errRecord) {
			continue
		}
		idmap := NewIdMap(did, eid, NewCgUid(city, lineId, station.Name))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// 车站站台uid
	for _, p := range xhbz.Platforms {
		eid := p.Id
		if checkFieldEmpty(did, eid, p.Code, errPrefix, "站台编号", errRecord) {
			continue
		}
		if checkFieldEmpty(did, eid, p.StationId, errPrefix, "站台关联车站", errRecord) {
			continue
		}
		stationIdm := idMapping.queryByDidAndEid(did, p.StationId)
		if checkRelationNil(did, eid, p.StationId, stationIdm, errPrefix, "站台关联车站", errRecord) {
			continue
		}
		// 站台code: 车站名称_站台编号
		idmap := NewIdMap(did, eid, NewCgUid(city, lineId, stationIdm.Uid.Code(), p.Code))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// 屏蔽门uid
	for _, p := range xhbz.Psds {
		eid := p.Id
		if checkFieldEmpty(did, eid, p.Code, errPrefix, "屏蔽门编号", errRecord) {
			continue
		}
		if checkFieldEmpty(did, eid, p.PlatformId, errPrefix, "屏蔽门关联站台", errRecord) {
			continue
		}
		relIdMap := idMapping.queryByDidAndEid(did, p.PlatformId)
		if checkRelationNil(did, eid, p.PlatformId, relIdMap, errPrefix, "屏蔽门关联站台", errRecord) {
			continue
		}
		// 屏蔽门code: 站台编号_屏蔽门编号
		idmap := NewIdMap(did, eid, NewCgUid(city, lineId, relIdMap.Uid.Code(), p.Code))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// 物理区段
	for _, ps := range xhbz.PhysicalSections {
		eid := ps.Id
		if checkFieldEmpty(did, eid, ps.Code, errPrefix, "物理区段编号", errRecord) {
			continue
		}
		if checkFieldEmpty(did, eid, ps.EcsId, errPrefix, "物理区段关联集中站", errRecord) {
			continue
		}
		relIdMap := idMapping.queryByDidAndEid(did, ps.EcsId)
		if checkRelationNil(did, eid, ps.EcsId, relIdMap, errPrefix, "物理区段关联集中站", errRecord) {
			continue
		}
		// 物理区段code: 集中站名称_物理区段编号
		idmap := NewIdMap(did, eid, NewCgUid(city, lineId, relIdMap.Uid.Code(), ps.Code))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// 道岔uid
	for _, t := range xhbz.Turnouts {
		eid := t.Id
		if checkFieldEmpty(did, eid, t.Code, errPrefix, "道岔编号", errRecord) {
			continue
		}
		if checkFieldEmpty(did, eid, t.EcsId, errPrefix, "道岔关联集中站", errRecord) {
			continue
		}
		relIdMap := idMapping.queryByDidAndEid(did, t.EcsId)
		if checkRelationNil(did, eid, t.EcsId, relIdMap, errPrefix, "道岔关联集中站", errRecord) {
			continue
		}
		// 道岔code: 集中站名称_道岔编号
		idmap := NewIdMap(did, eid, NewCgUid(city, lineId, relIdMap.Uid.Code(), t.Code))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// 区段分界点uid
	for _, c := range xhbz.DevidingPoints {
		eid := c.Id
		if checkFieldEmpty(did, eid, c.Code, errPrefix, "区段分界点编号", errRecord) {
			continue
		}
		if checkFieldEmpty(did, eid, c.EcsIds, errPrefix, "区段分界点关联集中站", errRecord) {
			continue
		}
		ecsErr := false
		for _, v := range c.EcsIds {
			relIdMap := idMapping.queryByDidAndEid(did, v)
			if checkRelationNil(did, eid, v, relIdMap, errPrefix, "区段分界点关联集中站", errRecord) {
				ecsErr = true
				continue
			}
		}
		if ecsErr {
			continue
		}
		idmap := NewIdMap(did, eid, NewCgUid(city, lineId, c.Code))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// 信号机uid
	for _, s := range xhbz.Signals {
		eid := s.Id
		if checkFieldEmpty(did, eid, s.Code, errPrefix, "信号机编号", errRecord) {
			continue
		}
		if checkFieldEmpty(did, eid, s.EcsId, errPrefix, "信号机关联集中站", errRecord) {
			continue
		}
		relIdMap := idMapping.queryByDidAndEid(did, s.EcsId)
		if checkRelationNil(did, eid, s.EcsId, relIdMap, errPrefix, "信号机关联集中站", errRecord) {
			continue
		}
		idmap := NewIdMap(did, eid, NewCgUid(city, lineId, relIdMap.Uid.Code(), s.Code))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// 应答器uid
	for _, b := range xhbz.Balises {
		eid := b.Id
		if checkFieldEmpty(did, eid, b.Code, errPrefix, "应答器编号", errRecord) {
			continue
		}
		if checkFieldEmpty(did, eid, b.EcsId, errPrefix, "应答器关联集中站", errRecord) {
			continue
		}
		relIdMap := idMapping.queryByDidAndEid(did, b.EcsId)
		if checkRelationNil(did, eid, b.EcsId, relIdMap, errPrefix, "应答器关联集中站", errRecord) {
			continue
		}
		idmap := NewIdMap(did, eid, NewCgUid(city, lineId, relIdMap.Uid.Code(), b.Code))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// 停车点
	for _, ps := range xhbz.ParkingSpots {
		idmap := NewIdMap(did, ps.Id, NewCgUid(city, lineId, did, strconv.Itoa(int(ps.Id))))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// 坡度
	for _, v := range xhbz.Pds {
		idmap := NewIdMap(did, v.Id, NewCgUid(city, lineId, did, strconv.Itoa(int(v.Id))))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// 曲度
	for _, v := range xhbz.Qds {
		idmap := NewIdMap(did, v.Id, NewCgUid(city, lineId, did, strconv.Itoa(int(v.Id))))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// 紧急停车按钮
	for _, v := range xhbz.Emps {
		eid := v.Id
		if checkFieldEmpty(did, eid, v.Code, errPrefix, "紧急停车按钮编号", errRecord) {
			continue
		}
		if checkFieldEmpty(did, eid, v.PlatformId, errPrefix, "紧急停车按钮关联站台", errRecord) {
			continue
		}
		relIdMap := idMapping.queryByDidAndEid(did, v.PlatformId)
		if checkRelationNil(did, eid, v.PlatformId, relIdMap, errPrefix, "紧急停车按钮关联站台", errRecord) {
			continue
		}
		idmap := NewIdMap(did, eid, NewCgUid(city, lineId, relIdMap.Uid.Code(), v.Code))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// 停车倒计时器
	for _, v := range xhbz.Tdts {
		eid := v.Id
		if checkFieldEmpty(did, eid, v.Code, errPrefix, "停车倒计时器编号", errRecord) {
			continue
		}
		if checkFieldEmpty(did, eid, v.PlatformId, errPrefix, "停车倒计时器关联站台", errRecord) {
			continue
		}
		relIdMap := idMapping.queryByDidAndEid(did, v.PlatformId)
		if checkRelationNil(did, eid, v.PlatformId, relIdMap, errPrefix, "停车倒计时器关联站台", errRecord) {
			continue
		}
		idmap := NewIdMap(did, eid, NewCgUid(city, lineId, relIdMap.Uid.Code(), v.Code))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// 门控箱
	for _, v := range xhbz.Mkxs {
		eid := v.Id
		if checkFieldEmpty(did, eid, v.Code, errPrefix, "门控箱编号", errRecord) {
			continue
		}
		if checkFieldEmpty(did, eid, v.PsdId, errPrefix, "门控箱关联屏蔽门", errRecord) {
			continue
		}
		relIdMap := idMapping.queryByDidAndEid(did, v.PsdId)
		if checkRelationNil(did, eid, v.PsdId, relIdMap, errPrefix, "门控箱关联屏蔽门", errRecord) {
			continue
		}
		idmap := NewIdMap(did, eid, NewCgUid(city, lineId, relIdMap.Uid.Code(), v.Code))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// PSL
	for _, v := range xhbz.Psls {
		eid := v.Id
		if checkFieldEmpty(did, eid, v.Code, errPrefix, "PSL编号", errRecord) {
			continue
		}
		if checkFieldEmpty(did, eid, v.PsdId, errPrefix, "PSL关联屏蔽门", errRecord) {
			continue
		}
		relIdMap := idMapping.queryByDidAndEid(did, v.PsdId)
		if checkRelationNil(did, eid, v.PsdId, relIdMap, errPrefix, "PSL关联屏蔽门", errRecord) {
			continue
		}
		idmap := NewIdMap(did, eid, NewCgUid(city, lineId, relIdMap.Uid.Code(), v.Code))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
	// SPKS
	for _, v := range xhbz.Spks {
		eid := v.Id
		if checkFieldEmpty(did, eid, v.Code, errPrefix, "SPKS编号", errRecord) {
			continue
		}
		if checkFieldEmpty(did, eid, v.PlatformId, errPrefix, "SPKS关联站台", errRecord) {
			continue
		}
		relIdMap := idMapping.queryByDidAndEid(did, v.PlatformId)
		if checkRelationNil(did, eid, v.PlatformId, relIdMap, errPrefix, "SPKS关联站台", errRecord) {
			continue
		}
		idmap := NewIdMap(did, eid, NewCgUid(city, lineId, relIdMap.Uid.Code(), v.Code))
		if checkRepeatOrAddIdMap(idmap, idMapping, errPrefix, errRecord) {
			continue
		}
	}
}

func checkRelationNil(did string, eid uint32, relId uint32, relIdMap *idMap, prefix string, relTip string, errRecord *ErrorRecord) bool {
	if relIdMap == nil {
		errRecord.AddError(fmt.Sprintf("%s: %s不存在, 数据id=%s 数据元素id=%v 关联id=%v", prefix, relTip, did, eid, relId))
		return true
	}
	return false
}

// 检查字段是否为空
func checkFieldEmpty(did string, eid uint32, field any, prefix string, tip string, errRecord *ErrorRecord) bool {
	if isFieldEmpty(field) {
		errRecord.AddError(fmt.Sprintf("%s: %s不能为空, 数据id=%s 数据元素id=%v ", prefix, tip, did, eid))
		return true
	}
	return false
}

func isFieldEmpty(field any) bool {
	if field == nil {
		return true
	}
	vf := reflect.ValueOf(field)
	switch vf.Kind() {
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
		reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
		reflect.Float32, reflect.Float64:
		return field == 0
	case reflect.String:
		return field == ""
	case reflect.Slice, reflect.Map:
		return vf.Len() == 0
	}
	return false
}

// 数据uid/deid重复检查
func checkRepeatOrAddIdMap(idm *idMap, idMapping *IdMapping, prefix string, errRecord *ErrorRecord) (repeated bool) {
	if old := idMapping.queryByDeId(idm.DeId()); old != nil {
		errRecord.AddError(fmt.Sprintf("%s,数据元素重复: 数据1=%s 数据2=%s,", prefix, old.Debug(), idm.Debug()))
		repeated = true
	} else if old, _ := idMapping.checkUidAndAdd(idm); old != nil {
		errRecord.AddError(fmt.Sprintf("%s,数据重复: 数据1=%s 数据2=%s,", prefix, old.Debug(), idm.Debug()))
		repeated = true
	}
	return
}

func BuildGtIdMapping(gt *dto.GTData) *IdMapping {
	panic("未实现")
}