package repo

import (
	"errors"
	"fmt"

	"git.icod.de/dalu/refdata/model"
	"github.com/globalsign/mgo"
	"github.com/globalsign/mgo/bson"
)

//
type DataIdQuery struct {
	Id string
}

// string
type DataNameQuery struct {
	Operation string
	Query     string
	Options   string
}

// string
type DataAddressQuery struct {
	Operation string
	Query     string
	Options   string
}

// string
type DataLocationQuery struct {
	Operation string
	Query     string
	Options   string
}

// int
type DataAgeQuery struct {
	Operation string
	From      int64
	To        int64
}

// float64
type DataPriceQuery struct {
	Operation string
	From      float64
	To        float64
}

// bool
type DataEnabledQuery struct {
	Query bool
}

type DataParams struct {
	Start int    // list only
	Limit int    // list only
	Sort  string // list only

	Id       bool // get only
	Name     bool
	Address  bool
	Location bool
	Age      bool
	Price    bool
	Enabled  bool

	IdQuery       DataIdQuery // get only
	NameQuery     DataNameQuery
	AddressQuery  DataAddressQuery
	LocationQuery DataLocationQuery
	AgeQuery      DataAgeQuery
	PriceQuery    DataPriceQuery
	EnabledQuery  DataEnabledQuery
}

type DataRepository struct {
	ms *mgo.Session

	database   string
	collection string
}

func NewDataRepository(ms *mgo.Session, db, c string) *DataRepository {
	r := new(DataRepository)
	r.ms = ms.Clone()
	r.database = db
	r.collection = c
	return r
}

func (r *DataRepository) Close() {
	r.ms.Close()
}

func (r *DataRepository) List(p *DataParams) ([]*model.Data, error) {
	ms := r.ms.Copy()
	defer ms.Close()
	c := ms.DB(r.database).C(r.collection)
	q := bson.M{}

	// string
	if p.Name {
		switch p.NameQuery.Operation {
		case "eq":
			q["name"] = p.NameQuery.Query
		case "regex":
			q["name"] = bson.RegEx{Pattern: p.NameQuery.Query, Options: p.NameQuery.Options}
		}
	}

	// string
	if p.Address {
		switch p.AddressQuery.Operation {
		case "eq":
			q["address"] = p.AddressQuery.Query
		case "regex":
			q["address"] = bson.RegEx{Pattern: p.AddressQuery.Query, Options: p.AddressQuery.Options}
		}
	}

	// string
	if p.Location {
		switch p.LocationQuery.Operation {
		case "eq":
			q["address"] = p.LocationQuery.Query
		case "regex":
			q["address"] = bson.RegEx{Pattern: p.LocationQuery.Query, Options: p.LocationQuery.Options}
		}
	}

	// int64
	if p.Age {
		switch p.AgeQuery.Operation {
		case "eq":
			q["age"] = p.AgeQuery.From
		case "gt-lt":
			q["age"] = bson.M{"$gt": p.AgeQuery.From, "$lt": p.AgeQuery.To}
		case "gte-lte":
			q["age"] = bson.M{"$gte": p.AgeQuery.From, "$lte": p.AgeQuery.To}
		case "gte-lt":
			q["age"] = bson.M{"$gte": p.AgeQuery.From, "$lt": p.AgeQuery.To}
		case "gt-lte":
			q["age"] = bson.M{"$gt": p.AgeQuery.From, "$lte": p.AgeQuery.To}
		case "gt":
			q["age"] = bson.M{"$gt": p.AgeQuery.From}
		case "gte":
			q["age"] = bson.M{"$gte": p.AgeQuery.From}
		case "lt":
			q["age"] = bson.M{"$lt": p.AgeQuery.To}
		case "lte":
			q["age"] = bson.M{"$lte": p.AgeQuery.To}
		}
	}

	// float64
	if p.Price {
		switch p.PriceQuery.Operation {
		case "eq":
			q["price"] = p.PriceQuery.From
		case "gt":
			q["price"] = bson.M{"$gt": p.PriceQuery.From}
		case "gte":
			q["price"] = bson.M{"$gte": p.PriceQuery.From}
		case "lt":
			q["price"] = bson.M{"$lt": p.PriceQuery.To}
		case "lte":
			q["price"] = bson.M{"$lte": p.PriceQuery.To}
		case "gt-lt":
			q["price"] = bson.M{"$gt": p.PriceQuery.From, "$lt": p.PriceQuery.To}
		case "gte-lte":
			q["price"] = bson.M{"$gte": p.PriceQuery.From, "$lte": p.PriceQuery.To}
		case "gte-lt":
			q["price"] = bson.M{"$gte": p.PriceQuery.From, "$lt": p.PriceQuery.To}
		case "gt-lte":
			q["price"] = bson.M{"$gt": p.PriceQuery.From, "$lte": p.PriceQuery.To}
		}
	}

	// bool
	if p.Enabled {
		q["enabled"] = p.EnabledQuery.Query
	}

	var m []*model.Data
	rq := c.Find(q)

	if p.Sort != "" {
		rq = rq.Sort(p.Sort)
	}

	if p.Start > 0 && p.Limit > 0 {
		rq = rq.Skip(p.Start).Limit(p.Limit)
	} else if p.Start > 0 && p.Limit < 1 {
		rq = rq.Skip(p.Start)
	} else if p.Start < 1 && p.Limit > 0 {
		rq = rq.Limit(p.Limit)
	}

	if e := rq.All(&m); e != nil {
		return nil, e
	}

	return m, nil
}

func (r *DataRepository) Get(p *DataParams) (*model.Data, error) {
	ms := r.ms.Copy()
	defer ms.Close()
	c := ms.DB(r.database).C(r.collection)
	q := bson.M{}

	// id
	if p.Id {
		q["_id"] = bson.ObjectIdHex(p.IdQuery.Id)
	}

	// string
	if p.Name {
		switch p.NameQuery.Operation {
		case "eq":
			q["name"] = p.NameQuery.Query
		case "regex":
			q["name"] = bson.RegEx{Pattern: p.NameQuery.Query, Options: p.NameQuery.Options}
		}
	}

	// string
	if p.Address {
		switch p.AddressQuery.Operation {
		case "eq":
			q["address"] = p.AddressQuery.Query
		case "regex":
			q["address"] = bson.RegEx{Pattern: p.AddressQuery.Query, Options: p.AddressQuery.Options}
		}
	}

	// string
	if p.Location {
		switch p.LocationQuery.Operation {
		case "eq":
			q["address"] = p.LocationQuery.Query
		case "regex":
			q["address"] = bson.RegEx{Pattern: p.LocationQuery.Query, Options: p.LocationQuery.Options}
		}
	}

	// int64
	if p.Age {
		switch p.AgeQuery.Operation {
		case "eq":
			q["age"] = p.AgeQuery.From
		case "gt-lt":
			q["age"] = bson.M{"$gt": p.AgeQuery.From, "$lt": p.AgeQuery.To}
		case "gte-lte":
			q["age"] = bson.M{"$gte": p.AgeQuery.From, "$lte": p.AgeQuery.To}
		case "gte-lt":
			q["age"] = bson.M{"$gte": p.AgeQuery.From, "$lt": p.AgeQuery.To}
		case "gt-lte":
			q["age"] = bson.M{"$gt": p.AgeQuery.From, "$lte": p.AgeQuery.To}
		}
	}

	// float64
	if p.Price {
		switch p.PriceQuery.Operation {
		case "eq":
			q["age"] = p.PriceQuery.From
		case "gt-lt":
			q["age"] = bson.M{"$gt": p.PriceQuery.From, "$lt": p.PriceQuery.To}
		case "gte-lte":
			q["age"] = bson.M{"$gte": p.PriceQuery.From, "$lte": p.PriceQuery.To}
		case "gte-lt":
			q["age"] = bson.M{"$gte": p.PriceQuery.From, "$lt": p.PriceQuery.To}
		case "gt-lte":
			q["age"] = bson.M{"$gt": p.PriceQuery.From, "$lte": p.PriceQuery.To}
		}
	}

	// bool
	if p.Enabled {
		q["enabled"] = p.EnabledQuery.Query
	}

	m := new(model.Data)
	rq := c.Find(q)

	if e := rq.One(m); e != nil {
		return nil, e
	}

	return m, nil
}

func (r *DataRepository) Create(m *model.Data) error {
	ms := r.ms.Copy()
	defer ms.Close()
	c := ms.DB(r.database).C(r.collection)
	return c.Insert(m)
}

func (r *DataRepository) UpdateId(id string, m *model.Data) error {
	if !bson.IsObjectIdHex(id) {
		return errors.New(fmt.Sprintf("%s is not an ObjectId", id))
	}
	ms := r.ms.Copy()
	defer ms.Close()
	c := ms.DB(r.database).C(r.collection)
	return c.UpdateId(bson.ObjectIdHex(id), m)
}

func (r *DataRepository) RemoveId(id string) error {
	if !bson.IsObjectIdHex(id) {
		return errors.New(fmt.Sprintf("%s is not an ObjectId", id))
	}
	ms := r.ms.Copy()
	defer ms.Close()
	c := ms.DB(r.database).C(r.collection)
	return c.RemoveId(bson.ObjectIdHex(id))
}