// --------------------------------------------------------------------------------------------
// The following code is automatically generated by the mongo-dao-generator tool.
// Please do not modify this code manually to avoid being overwritten in the next generation. 
// For more tool details, please click the link to view https://github.com/dobyte/mongo-dao-generator
// --------------------------------------------------------------------------------------------

package internal

import (
	"context"
	"errors"
	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/bson/primitive"
	"go.mongodb.org/mongo-driver/mongo"
	"go.mongodb.org/mongo-driver/mongo/options"
	modelpkg "mongo.games.com/mongoctl/example/model"
	"time"
)

type MailFilterFunc func(cols *MailColumns) interface{}
type MailUpdateFunc func(cols *MailColumns) interface{}
type MailPipelineFunc func(cols *MailColumns) interface{}
type MailCountOptionsFunc func(cols *MailColumns) *options.CountOptions
type MailAggregateOptionsFunc func(cols *MailColumns) *options.AggregateOptions
type MailFindOneOptionsFunc func(cols *MailColumns) *options.FindOneOptions
type MailFindManyOptionsFunc func(cols *MailColumns) *options.FindOptions
type MailUpdateOptionsFunc func(cols *MailColumns) *options.UpdateOptions
type MailDeleteOptionsFunc func(cols *MailColumns) *options.DeleteOptions
type MailInsertOneOptionsFunc func(cols *MailColumns) *options.InsertOneOptions
type MailInsertManyOptionsFunc func(cols *MailColumns) *options.InsertManyOptions

type Mail struct {
	Columns    *MailColumns
	Database   *mongo.Database
	Collection *mongo.Collection
}

type MailColumns struct {
	ID       string // 邮件ID
	Title    string // 邮件标题
	Content  string // 邮件内容
	Sender   string // 邮件发送者
	Receiver string // 邮件接受者
	Status   string // 邮件状态
	SendTime string // 发送时间
}

var mailColumns = &MailColumns{
	ID:       "_id",       // 邮件ID
	Title:    "title",     // 邮件标题
	Content:  "content",   // 邮件内容
	Sender:   "sender",    // 邮件发送者
	Receiver: "receiver",  // 邮件接受者
	Status:   "status",    // 邮件状态
	SendTime: "send_time", // 发送时间
}

func NewMail(db *mongo.Database) *Mail {
	return &Mail{
		Columns:    mailColumns,
		Database:   db,
		Collection: db.Collection("mail"),
	}
}

// Count returns the number of documents in the collection.
func (dao *Mail) Count(ctx context.Context, filterFunc MailFilterFunc, optionsFunc ...MailCountOptionsFunc) (int64, error) {
    var (
        opts   *options.CountOptions
        filter = filterFunc(dao.Columns)
    )

    if len(optionsFunc) > 0 {
        opts = optionsFunc[0](dao.Columns)
    }

    return dao.Collection.CountDocuments(ctx, filter, opts)
}

// Aggregate executes an aggregate command against the collection and returns a cursor over the resulting documents.
func (dao *Mail) Aggregate(ctx context.Context, pipelineFunc MailPipelineFunc, optionsFunc ...MailAggregateOptionsFunc) (*mongo.Cursor, error) {
    var (
        opts     *options.AggregateOptions
        pipeline = pipelineFunc(dao.Columns)
    )

    if len(optionsFunc) > 0 {
        opts = optionsFunc[0](dao.Columns)
    }

    return dao.Collection.Aggregate(ctx, pipeline, opts)
}

// InsertOne executes an insert command to insert a single document into the collection.
func (dao *Mail) InsertOne(ctx context.Context, model *modelpkg.Mail, optionsFunc ...MailInsertOneOptionsFunc) (*mongo.InsertOneResult, error) {
	if model == nil {
		return nil, errors.New("model is nil")
	}

	if err := dao.autofill(ctx, model); err != nil {
		return nil, err
	}

	var opts *options.InsertOneOptions

	if len(optionsFunc) > 0 {
		opts = optionsFunc[0](dao.Columns)
	}

	return dao.Collection.InsertOne(ctx, model, opts)
}

// InsertMany executes an insert command to insert multiple documents into the collection.
func (dao *Mail) InsertMany(ctx context.Context, models []*modelpkg.Mail, optionsFunc ...MailInsertManyOptionsFunc) (*mongo.InsertManyResult, error) {
	if len(models) == 0 {
		return nil, errors.New("models is empty")
	}

	documents := make([]interface{}, 0, len(models))
	for i := range models {
		model := models[i]
		if err := dao.autofill(ctx, model); err != nil {
			return nil, err
		}
		documents = append(documents, model)
	}

	var opts *options.InsertManyOptions

	if len(optionsFunc) > 0 {
		opts = optionsFunc[0](dao.Columns)
	}

	return dao.Collection.InsertMany(ctx, documents, opts)
}

// UpdateOne executes an update command to update at most one document in the collection.
func (dao *Mail) UpdateOne(ctx context.Context, filterFunc MailFilterFunc, updateFunc MailUpdateFunc, optionsFunc ...MailUpdateOptionsFunc) (*mongo.UpdateResult, error) {
	var (
		opts   *options.UpdateOptions
		filter = filterFunc(dao.Columns)
		update = updateFunc(dao.Columns)
	)

	if len(optionsFunc) > 0 {
		opts = optionsFunc[0](dao.Columns)
	}

	return dao.Collection.UpdateOne(ctx, filter, update, opts)
}

// UpdateOneByID executes an update command to update at most one document in the collection.
func (dao *Mail) UpdateOneByID(ctx context.Context, id string, updateFunc MailUpdateFunc, optionsFunc ...MailUpdateOptionsFunc) (*mongo.UpdateResult, error) {
	objectID, err := primitive.ObjectIDFromHex(id)
	if err != nil {
		return nil, err
	}

    return dao.UpdateOne(ctx, func(cols *MailColumns) interface{} {
		return bson.M{"_id": objectID}
	}, updateFunc, optionsFunc...)
}

// UpdateMany executes an update command to update documents in the collection.
func (dao *Mail) UpdateMany(ctx context.Context, filterFunc MailFilterFunc, updateFunc MailUpdateFunc, optionsFunc ...MailUpdateOptionsFunc) (*mongo.UpdateResult, error) {
	var (
		opts   *options.UpdateOptions
		filter = filterFunc(dao.Columns)
		update = updateFunc(dao.Columns)
	)

	if len(optionsFunc) > 0 {
		opts = optionsFunc[0](dao.Columns)
	}

	return dao.Collection.UpdateMany(ctx, filter, update, opts)
}

// FindOne executes a find command and returns a model for one document in the collection.
func (dao *Mail) FindOne(ctx context.Context, filterFunc MailFilterFunc, optionsFunc ...MailFindOneOptionsFunc) (*modelpkg.Mail, error) {
	var (
		opts   *options.FindOneOptions
		model  = &modelpkg.Mail{}
		filter = filterFunc(dao.Columns)
	)

	if len(optionsFunc) > 0 {
		opts = optionsFunc[0](dao.Columns)
	}

	err := dao.Collection.FindOne(ctx, filter, opts).Decode(model)
	if err != nil {
		if err == mongo.ErrNoDocuments {
			return nil, nil
		}
		return nil, err
	}

	return model, nil
}

// FindOneByID executes a find command and returns a model for one document in the collection.
func (dao *Mail) FindOneByID(ctx context.Context, id string, optionsFunc ...MailFindOneOptionsFunc) (*modelpkg.Mail, error) {
	objectID, err := primitive.ObjectIDFromHex(id)
	if err != nil {
		return nil, err
	}

    return dao.FindOne(ctx, func(cols *MailColumns) interface{} {
		return bson.M{"_id": objectID}
	}, optionsFunc...)
}

// FindMany executes a find command and returns many models the matching documents in the collection.
func (dao *Mail) FindMany(ctx context.Context, filterFunc MailFilterFunc, optionsFunc ...MailFindManyOptionsFunc) ([]*modelpkg.Mail, error) {
	var (
		opts   *options.FindOptions
		filter = filterFunc(dao.Columns)
	)

	if len(optionsFunc) > 0 {
		opts = optionsFunc[0](dao.Columns)
	}

	cur, err := dao.Collection.Find(ctx, filter, opts)
	if err != nil {
		return nil, err
	}

	models := make([]*modelpkg.Mail, 0)
	
	if err = cur.All(ctx, &models); err != nil {
		return nil, err
	}

	return models, nil
}

// DeleteOne executes a delete command to delete at most one document from the collection.
func (dao *Mail) DeleteOne(ctx context.Context, filterFunc MailFilterFunc, optionsFunc ...MailDeleteOptionsFunc) (*mongo.DeleteResult, error) {
	var (
		opts   *options.DeleteOptions
		filter = filterFunc(dao.Columns)
	)

	if len(optionsFunc) > 0 {
		opts = optionsFunc[0](dao.Columns)
	}

	return dao.Collection.DeleteOne(ctx, filter, opts)
}

// DeleteOneByID executes a delete command to delete at most one document from the collection.
func (dao *Mail) DeleteOneByID(ctx context.Context, id string, optionsFunc ...MailDeleteOptionsFunc) (*mongo.DeleteResult, error) {
	objectID, err := primitive.ObjectIDFromHex(id)
	if err != nil {
		return nil, err
	}

    return dao.DeleteOne(ctx, func(cols *MailColumns) interface{} {
		return bson.M{"_id": objectID}
	}, optionsFunc...)
}

// DeleteMany executes a delete command to delete documents from the collection.
func (dao *Mail) DeleteMany(ctx context.Context, filterFunc MailFilterFunc, optionsFunc ...MailDeleteOptionsFunc) (*mongo.DeleteResult, error) {
	var (
		opts   *options.DeleteOptions
		filter = filterFunc(dao.Columns)
	)

	if len(optionsFunc) > 0 {
		opts = optionsFunc[0](dao.Columns)
	}

	return dao.Collection.DeleteMany(ctx, filter, opts)
}

// autofill when inserting data
func (dao *Mail) autofill(ctx context.Context, model *modelpkg.Mail) error {
	if model.ID.IsZero() {
		model.ID = primitive.NewObjectID()
	}

	if model.SendTime == 0 {
		model.SendTime = primitive.NewDateTimeFromTime(time.Now())
	}

	return nil
}