// 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 db

import (
	"context"
	"time"

	"yunion.io/x/jsonutils"
	"yunion.io/x/pkg/errors"
	"yunion.io/x/pkg/util/reflectutils"
	"yunion.io/x/sqlchemy"

	"yunion.io/x/onecloud/pkg/apis"
	identityapi "yunion.io/x/onecloud/pkg/apis/identity"
	"yunion.io/x/onecloud/pkg/cloudcommon/consts"
	"yunion.io/x/onecloud/pkg/httperrors"
	"yunion.io/x/onecloud/pkg/mcclient"
	"yunion.io/x/onecloud/pkg/util/rbacutils"
	"yunion.io/x/onecloud/pkg/util/stringutils2"
)

type SProjectizedResourceBaseManager struct {
	SDomainizedResourceBaseManager
}

type SProjectizedResourceBase struct {
	SDomainizedResourceBase

	// 项目Id
	ProjectId string `name:"tenant_id" width:"128" charset:"ascii" nullable:"false" index:"true" list:"user" json:"tenant_id"`
}

func (model *SProjectizedResourceBase) GetOwnerId() mcclient.IIdentityProvider {
	owner := SOwnerId{DomainId: model.DomainId, ProjectId: model.ProjectId}
	return &owner
}

func (manager *SProjectizedResourceBaseManager) FilterByOwner(q *sqlchemy.SQuery, owner mcclient.IIdentityProvider, scope rbacutils.TRbacScope) *sqlchemy.SQuery {
	if owner != nil {
		switch scope {
		case rbacutils.ScopeProject:
			q = q.Equals("tenant_id", owner.GetProjectId())
		case rbacutils.ScopeDomain:
			q = q.Equals("domain_id", owner.GetProjectDomainId())
		}
		/*if len(owner.GetProjectId()) > 0 {
			q = q.Equals("tenant_id", owner.GetProjectId())
		} else if len(owner.GetProjectDomainId()) > 0 {
			q = q.Equals("domain_id", owner.GetProjectDomainId())
		}*/
	}
	return q
}

func (manager *SProjectizedResourceBaseManager) ResourceScope() rbacutils.TRbacScope {
	return rbacutils.ScopeProject
}

func (manager *SProjectizedResourceBaseManager) FetchOwnerId(ctx context.Context, data jsonutils.JSONObject) (mcclient.IIdentityProvider, error) {
	return FetchProjectInfo(ctx, data)
}

func (manager *SProjectizedResourceBaseManager) QueryDistinctExtraField(q *sqlchemy.SQuery, field string) (*sqlchemy.SQuery, error) {
	switch field {
	case "tenant":
		tenantCacheQuery := TenantCacheManager.GetTenantQuery("name", "id").Distinct().SubQuery()
		q.AppendField(tenantCacheQuery.Field("name", "tenant")).Distinct()
		q = q.Join(tenantCacheQuery, sqlchemy.Equals(q.Field("tenant_id"), tenantCacheQuery.Field("id")))
		return q, nil
	}
	q, err := manager.SDomainizedResourceBaseManager.QueryDistinctExtraField(q, field)
	if err == nil {
		return q, nil
	}
	return q, httperrors.ErrNotFound
}

func (manager *SProjectizedResourceBaseManager) ListItemFilter(
	ctx context.Context,
	q *sqlchemy.SQuery,
	userCred mcclient.TokenCredential,
	query apis.ProjectizedResourceListInput,
) (*sqlchemy.SQuery, error) {
	var err error
	q, err = manager.SDomainizedResourceBaseManager.ListItemFilter(ctx, q, userCred, query.DomainizedResourceListInput)
	if err != nil {
		return nil, errors.Wrap(err, "SDomainizedResourceBaseManager.ListItemFilter")
	}
	if len(query.Projects) > 0 {
		tenants := TenantCacheManager.GetTenantQuery().SubQuery()
		subq := tenants.Query(tenants.Field("id")).Filter(sqlchemy.OR(
			sqlchemy.In(tenants.Field("id"), query.Projects),
			sqlchemy.In(tenants.Field("name"), query.Projects),
		)).SubQuery()
		q = q.In("tenant_id", subq)
	}
	return q, nil
}

func (manager *SProjectizedResourceBaseManager) OrderByExtraFields(
	ctx context.Context,
	q *sqlchemy.SQuery,
	userCred mcclient.TokenCredential,
	query apis.ProjectizedResourceListInput,
) (*sqlchemy.SQuery, error) {
	orders := []string{query.OrderByProject, query.OrderByDomain}
	if NeedOrderQuery(orders) {
		subq := TenantCacheManager.GetTenantQuery("id", "name", "domain").SubQuery()
		q = q.LeftJoin(subq, sqlchemy.Equals(q.Field("tenant_id"), subq.Field("id")))
		q = OrderByFields(q, orders, []sqlchemy.IQueryField{subq.Field("name"), subq.Field("domain")})
	}
	return q, nil
}

func (manager *SProjectizedResourceBaseManager) FetchCustomizeColumns(
	ctx context.Context,
	userCred mcclient.TokenCredential,
	query jsonutils.JSONObject,
	objs []interface{},
	fields stringutils2.SSortedStrings,
	isList bool,
) []apis.ProjectizedResourceInfo {
	ret := make([]apis.ProjectizedResourceInfo, len(objs))
	if len(fields) == 0 || fields.Contains("project_domain") || fields.Contains("tenant") {
		projectIds := stringutils2.SSortedStrings{}
		for i := range objs {
			var base *SProjectizedResourceBase
			reflectutils.FindAnonymouStructPointer(objs[i], &base)
			if base != nil && len(base.ProjectId) > 0 {
				projectIds = stringutils2.Append(projectIds, base.ProjectId)
			}
		}
		projects := DefaultProjectsFetcher(ctx, projectIds, false)
		if projects != nil {
			for i := range objs {
				var base *SProjectizedResourceBase
				reflectutils.FindAnonymouStructPointer(objs[i], &base)
				if base != nil && len(base.ProjectId) > 0 {
					if proj, ok := projects[base.ProjectId]; ok {
						if len(fields) == 0 || fields.Contains("project_domain") {
							ret[i].ProjectDomain = proj.Domain
						}
						if len(fields) == 0 || fields.Contains("tenant") {
							ret[i].Project = proj.Name
						}
					}
				}
			}
		}
	}
	return ret
}

func fetchProjects(ctx context.Context, projectIds []string, isDomain bool) map[string]STenant {
	deadline := time.Now().UTC().Add(-consts.GetTenantCacheExpireSeconds())
	q := TenantCacheManager.Query().In("id", projectIds).GT("last_check", deadline)
	if isDomain {
		q = q.Equals("domain_id", identityapi.KeystoneDomainRoot)
	} else {
		q = q.NotEquals("domain_id", identityapi.KeystoneDomainRoot)
	}
	projects := make([]STenant, 0)
	err := FetchModelObjects(TenantCacheManager, q, &projects)
	if err != nil {
		return nil
	}
	ret := make(map[string]STenant)
	for i := range projects {
		ret[projects[i].Id] = projects[i]
	}
	for _, pid := range projectIds {
		if _, ok := ret[pid]; !ok {
			// not found
			var t *STenant
			if isDomain {
				t, _ = TenantCacheManager.fetchDomainFromKeystone(ctx, pid)
			} else {
				t, _ = TenantCacheManager.fetchTenantFromKeystone(ctx, pid)
			}
			if t != nil {
				ret[t.Id] = *t
			}
		}
	}
	return ret
}