package dpsv1

import (
	"context"
	"encoding/json"
	"errors"
	"git.sxidc.com/service-supports/dps-sdk/pb/v1"
	"git.sxidc.com/service-supports/dps-sdk/pb/v1/request"
	"git.sxidc.com/service-supports/dps-sdk/pb/v1/response"
	"git.sxidc.com/service-supports/dps-sdk/ports"
	"google.golang.org/grpc"
	"google.golang.org/grpc/credentials/insecure"
	"reflect"
	"time"
)

type Client struct {
	conn                 *grpc.ClientConn
	commandServiceClient v1.CommandServiceClient
	queryServiceClient   v1.QueryServiceClient
}

func NewClient(address string) (*Client, error) {
	conn, err := grpc.DialContext(context.Background(), address,
		grpc.WithTransportCredentials(insecure.NewCredentials()))
	if err != nil {
		return nil, err
	}

	return &Client{
		conn:                 conn,
		commandServiceClient: v1.NewCommandServiceClient(conn),
		queryServiceClient:   v1.NewQueryServiceClient(conn),
	}, nil
}

func DestroyClient(client *Client) error {
	if client == nil {
		return nil
	}

	err := client.conn.Close()
	if err != nil {
		return err
	}

	client.conn = nil
	client.commandServiceClient = nil
	client.queryServiceClient = nil
	client = nil

	return nil
}

func (c *Client) AutoMigrate(req *ports.AutoMigrateRequest) error {
	tableModelDescribeJsonBytes, err := json.Marshal(req.TableModelDescribe)
	if err != nil {
		return err
	}

	_, err = c.commandServiceClient.AutoMigrate(context.Background(), &request.AutoMigrateRequest{
		DatabaseID:            req.DatabaseID,
		TablePrefixWithSchema: req.TablePrefixWithSchema,
		Version:               req.Version,
		TableModelDescribe:    tableModelDescribeJsonBytes,
	})
	if err != nil {
		return err
	}

	return nil
}

func (c *Client) Insert(req *ports.InsertRequest) (string, error) {
	tableRowJsonBytes, err := c.formTableRow(req.TableRow)
	if err != nil {
		return "", err
	}

	reply, err := c.commandServiceClient.Insert(context.Background(), &request.InsertRequest{
		DatabaseID:            req.DatabaseID,
		TablePrefixWithSchema: req.TablePrefixWithSchema,
		Version:               req.Version,
		KeyColumns:            req.KeyColumns,
		TableRow:              tableRowJsonBytes,
		UserID:                req.UserID,
	})
	if err != nil {
		return "", err
	}

	return reply.Statement, nil
}

// TODO InsertBatch

func (c *Client) Delete(req *ports.DeleteRequest) (string, error) {
	reply, err := c.commandServiceClient.Delete(context.Background(), &request.DeleteRequest{
		DatabaseID:            req.DatabaseID,
		TablePrefixWithSchema: req.TablePrefixWithSchema,
		Version:               req.Version,
		KeyValues:             req.KeyValues,
		UserID:                req.UserID,
	})
	if err != nil {
		return "", err
	}

	return reply.Statement, nil
}

// TODO DeleteBatch

func (c *Client) Update(req *ports.UpdateRequest) (string, error) {
	newTableRowJsonByte, err := c.formTableRow(req.NewTableRow)
	if err != nil {
		return "", err
	}

	reply, err := c.commandServiceClient.Update(context.Background(), &request.UpdateRequest{
		DatabaseID:            req.DatabaseID,
		TablePrefixWithSchema: req.TablePrefixWithSchema,
		Version:               req.Version,
		KeyValues:             req.KeyValues,
		NewTableRow:           newTableRowJsonByte,
		UserID:                req.UserID,
	})
	if err != nil {
		return "", err
	}

	return reply.Statement, nil
}

func (c *Client) Replay(req *ports.ReplayRequest) (string, error) {
	reply, err := c.commandServiceClient.Replay(context.Background(), &request.ReplayRequest{
		DatabaseID:            req.DatabaseID,
		TablePrefixWithSchema: req.TablePrefixWithSchema,
		Version:               req.Version,
		KeyValues:             req.KeyValues,
		UserID:                req.UserID,
	})
	if err != nil {
		return "", err
	}

	return reply.Statement, nil
}

func (c *Client) QueryByWhereAndOrderBy(req *ports.QueryByWhereAndOrderByRequest) (string, []map[string]any, int64, error) {
	whereJsonBytes, err := json.Marshal(req.Where)
	if err != nil {
		return "", nil, 0, err
	}

	reply, err := c.queryServiceClient.QueryByWhereAndOrderBy(context.Background(), &request.QueryByWhereAndOrderByRequest{
		DatabaseID:            req.DatabaseID,
		TablePrefixWithSchema: req.TablePrefixWithSchema,
		Version:               req.Version,
		Select:                req.Select,
		Where:                 whereJsonBytes,
		OrderBy:               req.OrderBy,
		PageNo:                req.PageNo,
		PageSize:              req.PageSize,
	})
	if err != nil {
		return "", nil, 0, err
	}

	infosMap, err := c.infoDataToInfoMapBatch(reply.Infos)
	if err != nil {
		return "", nil, 0, err
	}

	return reply.Statement, infosMap, reply.TotalCount, nil
}

func (c *Client) CommonQuery(req *ports.CommonQueryRequest) (string, []map[string]any, int64, error) {
	whereJsonBytes, err := json.Marshal(req.Where)
	if err != nil {
		return "", nil, 0, err
	}

	orJsonBytes, err := json.Marshal(req.Or)
	if err != nil {
		return "", nil, 0, err
	}

	havingJsonBytes, err := json.Marshal(req.Having)
	if err != nil {
		return "", nil, 0, err
	}

	reply, err := c.queryServiceClient.CommonQuery(context.Background(), &request.CommonQueryRequest{
		DatabaseID:            req.DatabaseID,
		TablePrefixWithSchema: req.TablePrefixWithSchema,
		Version:               req.Version,
		Select:                req.Select,
		Where:                 whereJsonBytes,
		OrderBy:               req.OrderBy,
		Or:                    orJsonBytes,
		GroupBy:               req.GroupBy,
		Join:                  req.Join,
		Having:                havingJsonBytes,
		PageNo:                req.PageNo,
		PageSize:              req.PageSize,
	})
	if err != nil {
		return "", nil, 0, err
	}

	infosMap, err := c.infoDataToInfoMapBatch(reply.Infos)
	if err != nil {
		return "", nil, 0, err
	}

	return reply.Statement, infosMap, reply.TotalCount, nil
}

func (c *Client) QueryByKeys(req *ports.QueryByKeysRequest) (string, map[string]any, error) {
	reply, err := c.queryServiceClient.QueryByKeys(context.Background(), &request.QueryByKeysRequest{
		DatabaseID:            req.DatabaseID,
		TablePrefixWithSchema: req.TablePrefixWithSchema,
		Version:               req.Version,
		Select:                req.Select,
		KeyValues:             req.KeyValues,
	})
	if err != nil {
		return "", nil, err
	}

	infoMap, err := c.infoDataToInfoMap(reply.Info)
	if err != nil {
		return "", nil, err
	}

	return reply.Statement, infoMap, nil
}

func (c *Client) CountWhere(req *ports.CountWhereRequest) (string, int64, error) {
	whereJsonBytes, err := json.Marshal(req.Where)
	if err != nil {
		return "", 0, err
	}

	reply, err := c.queryServiceClient.CountWhere(context.Background(), &request.CountWhereRequest{
		DatabaseID:            req.DatabaseID,
		TablePrefixWithSchema: req.TablePrefixWithSchema,
		Version:               req.Version,
		Where:                 whereJsonBytes,
		PageNo:                req.PageNo,
		PageSize:              req.PageSize,
	})
	if err != nil {
		return "", 0, err
	}

	return reply.Statement, reply.Count, nil
}

func (c *Client) CommonCount(req *ports.CommonCountRequest) (string, int64, error) {
	whereJsonBytes, err := json.Marshal(req.Where)
	if err != nil {
		return "", 0, err
	}

	orJsonBytes, err := json.Marshal(req.Or)
	if err != nil {
		return "", 0, err
	}

	havingJsonBytes, err := json.Marshal(req.Having)
	if err != nil {
		return "", 0, err
	}

	reply, err := c.queryServiceClient.CommonCount(context.Background(), &request.CommonCountRequest{
		DatabaseID:            req.DatabaseID,
		TablePrefixWithSchema: req.TablePrefixWithSchema,
		Version:               req.Version,
		Where:                 whereJsonBytes,
		Or:                    orJsonBytes,
		GroupBy:               req.GroupBy,
		Join:                  req.Join,
		Having:                havingJsonBytes,
		PageNo:                req.PageNo,
		PageSize:              req.PageSize,
	})
	if err != nil {
		return "", 0, err
	}

	return reply.Statement, reply.Count, nil
}

func (c *Client) formTableRow(tableRow map[string]any) (*request.TableRow, error) {
	if tableRow == nil || len(tableRow) == 0 {
		return &request.TableRow{Columns: make([]*request.Column, 0)}, nil
	}

	columns := make([]*request.Column, 0)
	for columnName, value := range tableRow {
		valueType := reflect.TypeOf(value)
		if valueType.Kind() == reflect.Ptr {
			reflectValue := reflect.ValueOf(value).Elem()
			valueType = reflectValue.Type()
			value = reflectValue.Interface()
		}

		typedValue := new(request.ColumnValue)
		typedValue.Kind = int32(valueType.Kind())
		typedValue.Type = valueType.Name()

		switch valueType.Name() {
		case "Time":
			timeObj := value.(time.Time)
			typedValue.TypedValue = &request.ColumnValue_Uint64Value{Uint64Value: uint64(timeObj.UnixNano())}
		case "string":
			typedValue.TypedValue = &request.ColumnValue_StringValue{StringValue: value.(string)}
		case "bool":
			typedValue.TypedValue = &request.ColumnValue_BoolValue{BoolValue: value.(bool)}
		case "int":
			typedValue.TypedValue = &request.ColumnValue_Uint32Value{Uint32Value: uint32(value.(int))}
		case "int32":
			typedValue.TypedValue = &request.ColumnValue_Uint32Value{Uint32Value: uint32(value.(int32))}
		case "int64":
			typedValue.TypedValue = &request.ColumnValue_Uint64Value{Uint64Value: uint64(value.(int64))}
		case "uint32":
			typedValue.TypedValue = &request.ColumnValue_Uint32Value{Uint32Value: value.(uint32)}
		case "uint64":
			typedValue.TypedValue = &request.ColumnValue_Uint64Value{Uint64Value: value.(uint64)}
		case "float32":
			typedValue.TypedValue = &request.ColumnValue_Float64Value{Float64Value: float64(value.(float32))}
		case "float64":
			typedValue.TypedValue = &request.ColumnValue_Float64Value{Float64Value: value.(float64)}
		default:
			return nil, errors.New("不支持的数据类型" + valueType.Name())
		}

		columns = append(columns, &request.Column{
			Name:  columnName,
			Value: typedValue,
		})
	}

	return &request.TableRow{Columns: columns}, nil
}

func (c *Client) infoDataToInfoMap(infoData *response.InfoData) (map[string]any, error) {
	retInfoMap := make(map[string]any)

	for _, column := range infoData.Columns {
		switch column.Value.Type {
		case "Time":
			timeObj := time.Unix(0, int64(column.Value.GetUint64Value()))
			retInfoMap[column.Name] = timeObj
		case "string":
			retInfoMap[column.Name] = column.Value.GetStringValue()
		case "bool":
			retInfoMap[column.Name] = column.Value.GetBoolValue()
		case "int":
			retInfoMap[column.Name] = int(column.Value.GetUint32Value())
		case "int32":
			retInfoMap[column.Name] = int(column.Value.GetUint32Value())
		case "int64":
			retInfoMap[column.Name] = int64(column.Value.GetUint64Value())
		case "uint32":
			retInfoMap[column.Name] = column.Value.GetUint32Value()
		case "uint64":
			retInfoMap[column.Name] = column.Value.GetUint64Value()
		case "float32":
			retInfoMap[column.Name] = float32(column.Value.GetFloat64Value())
		case "float64":
			retInfoMap[column.Name] = column.Value.GetFloat64Value()
		default:
			return nil, errors.New("不支持的数据类型" + column.Value.Type)
		}
	}

	return retInfoMap, nil
}

func (c *Client) infoDataToInfoMapBatch(infosData []*response.InfoData) ([]map[string]any, error) {
	retInfosDataMap := make([]map[string]any, 0)

	for _, infoData := range infosData {
		retInfoMap, err := c.infoDataToInfoMap(infoData)
		if err != nil {
			return nil, err
		}

		retInfosDataMap = append(retInfosDataMap, retInfoMap)
	}

	return retInfosDataMap, nil
}