package trafficcutoffconfig

import (
	"context"
	"fmt"
	"math"
	"strings"

	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/consts"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/library/batchimport"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/model"

	"github.com/gogf/gf/v2/encoding/gjson"
	"github.com/gogf/gf/v2/errors/gerror"
	"github.com/gogf/gf/v2/frame/g"
)

type Processor struct{}

func NewProcessor() *Processor {
	return &Processor{}
}

func (p *Processor) Config() batchimport.ProcessorConfig {
	return batchimport.ProcessorConfig{
		Code:            "sim_card_traffic_cutoff_config",
		BatchType:       consts.BatchTypeTrafficCutoffConfig,
		BatchNoPrefix:   consts.BatchNoPrefixTrafficCutoffConfig,
		TaskName:        consts.ResourceBatchDownloadTaskTrafficCutoffConfig,
		ExportScene:     consts.ResourceExportSceneTrafficCutoffConfig,
		ImportDir:       consts.SimCardTrafficCutoffConfigSubDirImportExcel,
		ResultDir:       consts.SimCardTrafficCutoffConfigSubDirResultExcel,
		MaxFileSize:     consts.SimCardTrafficCutoffConfigMaxFileSize,
		TemplateHeaders: []string{"ICCID", "MSISDN", "IMSI"},
		RequiredHeaders: []string{"ICCID"},
	}
}

func (p *Processor) ParseRows(ctx context.Context, filePath string) ([]batchimport.Row, error) {
	return ParseExcelFileRows(ctx, filePath)
}

func (p *Processor) ValidateRows(_ context.Context, rows []batchimport.Row) error {
	firstByIccid := make(map[string]*Row, len(rows))
	for _, item := range rows {
		row, ok := item.(*Row)
		if !ok || row == nil {
			item.AddErrorReason("达量断网配置行类型错误")
			continue
		}
		row.Iccid = strings.TrimSpace(row.Iccid)
		row.Msisdn = strings.TrimSpace(row.Msisdn)
		row.Imsi = strings.TrimSpace(row.Imsi)
		if row.Iccid == "" {
			row.AddErrorReason("ICCID不能为空")
			continue
		}
		if first, exists := firstByIccid[row.Iccid]; exists {
			row.AddErrorReason(fmt.Sprintf("ICCID与第%d行重复", first.RowNo))
			first.AddErrorReason("ICCID重复")
			continue
		}
		firstByIccid[row.Iccid] = row
	}
	return nil
}

func (p *Processor) BuildBatchInfo(ctx context.Context, req batchimport.SubmitRequest, result *batchimport.Result, importOss *model.SysOssSaveContentModel, resultOss *model.SysOssSaveContentModel, downloadId int64) *gjson.Json {
	options, _ := OptionsFromParams(req.BizParams)
	info := g.Map{
		"operation":                   "traffic_cutoff_config",
		"configName":                  "达量断网配置",
		"submitScene":                 submitScene(req.BizParams),
		"trafficCutoffStatus":         options.TrafficCutoffStatus,
		"trafficCutoffThreshold":      options.TrafficCutoffThreshold,
		"trafficCutoffCrossMonthHold": options.TrafficCutoffCrossMonthHold,
		"trafficCutoffThresholdUnit":  "MB",
		"resultFile":                  g.Map{"status": "pending"},
	}
	if result != nil && result.ImportFileOssId > 0 {
		info["importFileOssId"] = result.ImportFileOssId
	} else if importOss != nil && importOss.OssId > 0 {
		info["importFileOssId"] = importOss.OssId
	}
	if resultOss != nil && resultOss.OssId > 0 {
		info["resultFileOssId"] = resultOss.OssId
	}
	if downloadId > 0 {
		info["resultDownloadId"] = downloadId
	}
	return gjson.New(info)
}

func OptionsFromParams(params any) (Options, error) {
	switch in := params.(type) {
	case *model.TSimCardTrafficCutoffExcelSubmitParam:
		if in == nil {
			return Options{}, gerror.New("达量断网配置参数不能为空")
		}
		return NormalizeOptions(&in.TSimCardTrafficCutoffOptions)
	case *model.TSimCardTrafficCutoffInputSubmitParam:
		if in == nil {
			return Options{}, gerror.New("达量断网配置参数不能为空")
		}
		return NormalizeOptions(&in.TSimCardTrafficCutoffOptions)
	case *model.TSimCardTrafficCutoffRangeSubmitParam:
		if in == nil {
			return Options{}, gerror.New("达量断网配置参数不能为空")
		}
		return NormalizeOptions(&in.TSimCardTrafficCutoffOptions)
	default:
		return Options{}, gerror.New("达量断网配置参数不能为空")
	}
}

func NormalizeOptions(in *model.TSimCardTrafficCutoffOptions) (Options, error) {
	if in == nil || in.TrafficCutoffStatus == nil {
		return Options{}, gerror.New("达量断网配置状态不能为空")
	}
	crossMonthHold := 0
	if in.TrafficCutoffCrossMonthHold != nil {
		crossMonthHold = *in.TrafficCutoffCrossMonthHold
	}
	options := Options{
		TrafficCutoffCrossMonthHold: crossMonthHold,
		TrafficCutoffStatus:         *in.TrafficCutoffStatus,
		TrafficCutoffThreshold:      in.TrafficCutoffThreshold,
	}
	if err := ValidateConfig(options.TrafficCutoffStatus, options.TrafficCutoffThreshold, options.TrafficCutoffCrossMonthHold); err != nil {
		return Options{}, err
	}
	return options, nil
}

func ValidateConfig(status int, threshold float64, crossMonthHoldValues ...int) error {
	crossMonthHold := 0
	if len(crossMonthHoldValues) > 0 {
		crossMonthHold = crossMonthHoldValues[0]
	}
	if status != 0 && status != 1 && status != 2 {
		return gerror.New("达量断网启停状态无效")
	}
	if threshold < 0 {
		return gerror.New("达量断网阈值不能小于0")
	}
	if status == 0 && threshold != 0 {
		return gerror.New("未配置达量断网时阈值必须为0")
	}
	if status == 1 && threshold <= 0 {
		return gerror.New("开启达量断网时阈值必须大于0")
	}
	if crossMonthHold != 0 && crossMonthHold != 1 {
		return gerror.New("invalid cross-month traffic cutoff hold value")
	}
	if status != 1 && crossMonthHold != 0 {
		return gerror.New("cross-month hold requires traffic cutoff to be enabled")
	}
	rounded := math.Round(threshold*1000) / 1000
	if math.Abs(threshold-rounded) > 0.0000001 {
		return gerror.New("达量断网阈值最多保留3位小数")
	}
	return nil
}

func submitScene(params any) string {
	switch params.(type) {
	case *model.TSimCardTrafficCutoffExcelSubmitParam:
		return "excel"
	case *model.TSimCardTrafficCutoffInputSubmitParam:
		return "input"
	case *model.TSimCardTrafficCutoffRangeSubmitParam:
		return "range"
	default:
		return ""
	}
}