package regionalserver

import (
	"context"
	"net/http"

	"github.com/go-resty/resty/v2"
	clusterngv1beta "github.com/tidbcloud/cluster-service-ng/api/cluster-service-ng/v1beta"

	"github.com/tidbcloud/tidb-management-service/nextgen-global-service/domain/entity"
	"github.com/tidbcloud/tidb-management-service/utilities/bizerr"
	"github.com/tidbcloud/tidb-management-service/utilities/grpc/metadata"
)

func (s *regionalServerCliImpl) CreateTidbGroup(
	ctx context.Context,
	region *entity.Region,
	req *clusterngv1beta.CreateTiDBGroupRequest,
) (*clusterngv1beta.TiDBGroup, bizerr.BizError) {
	body, err := marshalOptions.Marshal(req)
	if err != nil {
		return nil, bizerr.New(bizerr.ErrCodeJsonMarshal, "%s", err.Error())
	}
	resp, berr := s.callRegion(
		ctx,
		region,
		http.MethodPost,
		operationMap["CreateTidbGroup"],
		func(request *resty.Request) *resty.Request {
			request.SetPathParam(clusterIdParameter, req.GetClusterId())
			request.SetBody(body)
			return request
		},
	)
	if berr != nil {
		return nil, berr
	}

	var out clusterngv1beta.TiDBGroup
	if err := unmarshalOptions.Unmarshal(resp.Body(), &out); err != nil {
		return nil, bizerr.New(bizerr.ErrCodeRegionalAPI, "%s", err.Error())
	}

	return &out, nil
}

func (s *regionalServerCliImpl) GetTidbGroup(
	ctx context.Context,
	region *entity.Region,
	req *clusterngv1beta.GetTiDBGroupRequest,
) (*clusterngv1beta.TiDBGroup, bizerr.BizError) {
	resp, err := s.callRegion(
		ctx,
		region,
		http.MethodGet,
		operationMap["GetTidbGroup"],
		func(request *resty.Request) *resty.Request {
			request.SetPathParam(clusterIdParameter, req.GetClusterId())
			request.SetPathParam(tidbGroupIdPathParameter, req.GetTidbGroupId())
			return request
		},
	)
	if err != nil {
		if resp != nil && resp.StatusCode() == http.StatusNotFound {
			return nil, bizerr.New(bizerr.ErrCodeRecordNotFound, "tidb group not found")
		}
		return nil, err
	}

	var out clusterngv1beta.TiDBGroup
	if err := unmarshalOptions.Unmarshal(resp.Body(), &out); err != nil {
		return nil, bizerr.New(bizerr.ErrCodeRegionalAPI, "%s", err.Error())
	}

	return &out, nil
}

func (s *regionalServerCliImpl) DeleteTidbGroup(
	ctx context.Context,
	region *entity.Region,
	req *clusterngv1beta.DeleteTiDBGroupRequest,
) bizerr.BizError {
	tidbGroup, bizErr := s.GetTidbGroup(ctx, region, &clusterngv1beta.GetTiDBGroupRequest{
		ClusterId:   req.GetClusterId(),
		TidbGroupId: req.GetTidbGroupId(),
	})
	if bizErr != nil {
		return bizErr
	}
	actualRequest := &metadata.ExpectRequest[string]{
		TenantId:   "", // leave it empty
		ProjectId:  "", // leave it empty
		ClusterId:  tidbGroup.ClusterId,
		ResourceId: "", // leave it empty
	}
	if err := metadata.Validate(ctx, actualRequest); err != nil {
		return bizerr.WrapError(err, "validate failed")
	}

	resp, err := s.callRegion(
		ctx,
		region,
		http.MethodDelete,
		operationMap["DeleteTidbGroup"],
		func(request *resty.Request) *resty.Request {
			request.SetPathParam(clusterIdParameter, req.GetClusterId())
			request.SetPathParam(tidbGroupIdPathParameter, req.GetTidbGroupId())
			return request
		},
	)
	if err != nil {
		if resp != nil && resp.StatusCode() == http.StatusNotFound {
			return bizerr.New(bizerr.ErrCodeRecordNotFound, "tidb group not found")
		}
		return err
	}

	return nil
}

func (s *regionalServerCliImpl) UpdateTidbGroup(
	ctx context.Context,
	region *entity.Region,
	req *clusterngv1beta.UpdateTiDBGroupRequest,
) (*clusterngv1beta.TiDBGroup, bizerr.BizError) {
	body, err := marshalOptions.Marshal(req)
	if err != nil {
		return nil, bizerr.New(bizerr.ErrCodeJsonMarshal, "%s", err.Error())
	}

	resp, berr := s.callRegion(
		ctx,
		region,
		http.MethodPut,
		operationMap["UpdateTidbGroup"],
		func(request *resty.Request) *resty.Request {
			request.SetPathParam(clusterIdParameter, req.GetClusterId())
			request.SetPathParam(tidbGroupIdPathParameter, req.GetTidbGroupId())
			request.SetBody(body)
			return request
		},
	)
	if berr != nil {
		return nil, berr
	}

	var out clusterngv1beta.TiDBGroup
	if err := unmarshalOptions.Unmarshal(resp.Body(), &out); err != nil {
		return nil, bizerr.New(bizerr.ErrCodeRegionalAPI, "%s", err.Error())
	}

	return &out, nil
}

func (s *regionalServerCliImpl) ScaleTiDBGroup(
	ctx context.Context,
	region *entity.Region,
	req *clusterngv1beta.ScaleTiDBGroupRequest,
) (*clusterngv1beta.TiDBGroup, bizerr.BizError) {
	body, err := marshalOptions.Marshal(req)
	if err != nil {
		return nil, bizerr.New(bizerr.ErrCodeJsonMarshal, "%s", err.Error())
	}

	resp, berr := s.callRegion(
		ctx,
		region,
		http.MethodPost,
		operationMap["ScaleTiDBGroup"],
		func(request *resty.Request) *resty.Request {
			request.SetPathParam(clusterIdParameter, req.GetClusterId())
			request.SetPathParam(tidbGroupIdPathParameter, req.GetTidbGroupId())
			request.SetBody(body)
			return request
		},
	)
	if berr != nil {
		return nil, berr
	}

	var out clusterngv1beta.TiDBGroup
	if err := unmarshalOptions.Unmarshal(resp.Body(), &out); err != nil {
		return nil, bizerr.New(bizerr.ErrCodeRegionalAPI, "%s", err.Error())
	}

	return &out, nil
}