// Copyright 2019 Yunion
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package candidate

import (
	"yunion.io/x/jsonutils"
	"yunion.io/x/sqlchemy"

	computeapi "yunion.io/x/onecloud/pkg/apis/compute"
	"yunion.io/x/onecloud/pkg/apis/scheduler"
	"yunion.io/x/onecloud/pkg/compute/baremetal"
	computemodels "yunion.io/x/onecloud/pkg/compute/models"
	"yunion.io/x/onecloud/pkg/scheduler/core"
)

type baremetalGetter struct {
	*baseHostGetter
	bm *BaremetalDesc
}

func newBaremetalGetter(bm *BaremetalDesc) *baremetalGetter {
	return &baremetalGetter{
		baseHostGetter: newBaseHostGetter(bm.BaseHostDesc),
		bm:             bm,
	}
}

func (h baremetalGetter) FreeCPUCount(_ bool) int64 {
	return h.bm.FreeCPUCount()
}

func (h baremetalGetter) FreeMemorySize(_ bool) int64 {
	return h.bm.FreeMemSize()
}

func (h *baremetalGetter) NumaAllocateEnabled() bool {
	return false
}

func (h *baremetalGetter) GetFreeCpuNuma() []*scheduler.SFreeNumaCpuMem {
	return nil
}

func (h baremetalGetter) IsEmpty() bool {
	return h.bm.ServerID == ""
}

func (h baremetalGetter) StorageInfo() []*baremetal.BaremetalStorage {
	return h.bm.StorageInfo
}

func (h baremetalGetter) GetFreePort(netId string) int {
	cnt := h.h.GetFreePort(netId)
	if cnt < 0 {
		cnt = 0
	}
	nics := h.GetNics()
	for _, nic := range nics {
		if len(nic.IpAddr) > 0 && nic.NetId == netId {
			cnt += 1
		}
	}
	return cnt
}

type BaremetalDesc struct {
	*BaseHostDesc

	StorageInfo []*baremetal.BaremetalStorage `json:"storage_info"`
	StorageType string                        `json:"storage_type"`
	StorageSize int64                         `json:"storage_size"`
	ServerID    string                        `json:"server_id"`
}

type BaremetalBuilder struct {
	*baseBuilder
	baremetals []computemodels.SHost

	residentTenantDict map[string]map[string]interface{}
}

func (bd *BaremetalDesc) Getter() core.CandidatePropertyGetter {
	return newBaremetalGetter(bd)
}

func (bd *BaremetalDesc) String() string {
	return jsonutils.Marshal(bd).String()
}

func (bd *BaremetalDesc) Type() int {
	// Baremetal type
	return 1
}

func (bd *BaremetalDesc) GetGuestCount() int64 {
	if bd.ServerID == "" {
		return 0
	}
	return 1
}

func (bd *BaremetalDesc) IndexKey() string {
	return bd.Id
}

func (bd *BaremetalDesc) AllocCpuNumaPin(vcpuCount, memSizeKB int, preferNumaNodes []int) []scheduler.SCpuNumaPin {
	return nil
}

func (bd *BaremetalDesc) AllocCpuNumaPinWithNodeCount(vcpuCount, memSizeKB, nodeCount int) []scheduler.SCpuNumaPin {
	return nil
}

func (bd *BaremetalDesc) FreeCPUCount() int64 {
	if bd.ServerID == "" {
		return int64(bd.CpuCount)
	}
	return 0
}

func (bd *BaremetalDesc) FreeMemSize() int64 {
	if bd.ServerID == "" {
		return int64(bd.MemSize)
	}
	return 0
}

func (bd *BaremetalDesc) FreeStorageSize() int64 {
	if bd.ServerID == "" {
		return bd.StorageSize
	}
	return 0
}

func newBaremetalBuilder() *BaremetalBuilder {
	builder := new(BaremetalBuilder)
	builder.baseBuilder = newBaseBuilder(BaremetalDescBuilder, builder)
	return builder
}

func (bb *BaremetalBuilder) FetchHosts(ids []string) ([]computemodels.SHost, error) {
	return FetchHostsByIds(ids)
}

func (bb *BaremetalBuilder) Clone() BuildActor {
	return newBaremetalBuilder()
}

func (bb *BaremetalBuilder) AllIDs() ([]string, error) {
	q := computemodels.HostManager.Query("id")
	q = q.Filter(sqlchemy.Equals(q.Field("host_type"), computeapi.HOST_TYPE_BAREMETAL))
	return FetchModelIds(q)
}

func (bb *BaremetalBuilder) InitFuncs() []InitFunc {
	return nil
}

func (bb *BaremetalBuilder) BuildOne(hostObj *computemodels.SHost, netGetter *networkGetter, baseDesc *BaseHostDesc) (interface{}, error) {
	desc := &BaremetalDesc{
		BaseHostDesc: baseDesc,
	}

	desc.StorageDriver = hostObj.StorageDriver
	desc.StorageType = hostObj.StorageType
	desc.StorageSize = int64(hostObj.StorageSize)

	baremetalStorages := computemodels.ConvertStorageInfo2BaremetalStorages(hostObj.StorageInfo)
	desc.StorageInfo = baremetalStorages
	desc.Tenants = make(map[string]int64, 0)

	err := bb.fillServerID(desc, hostObj)
	if err != nil {
		return nil, err
	}

	return desc, nil
}

func (bb *BaremetalBuilder) fillServerID(desc *BaremetalDesc, b *computemodels.SHost) error {
	guest := b.GetBaremetalServer()
	srvId := ""
	if guest != nil {
		srvId = guest.GetId()
	}
	desc.ServerID = srvId

	return nil
}