package orm

import (
	"fmt"
	"os"
	"time"

	_ "github.com/go-sql-driver/mysql"
	_ "github.com/lib/pq"
	_ "github.com/mattn/go-sqlite3"
)

type Data struct {
	Id       int
	Boolean  bool
	Char     string    `orm:"size(50)"`
	Text     string    `orm:"type(text)"`
	Date     time.Time `orm:"type(date)"`
	DateTime time.Time
	Byte     byte
	Rune     rune
	Int      int
	Int8     int8
	Int16    int16
	Int32    int32
	Int64    int64
	Uint     uint
	Uint8    uint8
	Uint16   uint16
	Uint32   uint32
	Uint64   uint64
	Float32  float32
	Float64  float64
	Decimal  float64 `orm:"digits(8);decimals(4)"`
}

type DataNull struct {
	Id       int
	Boolean  bool      `orm:"null"`
	Char     string    `orm:"size(50);null"`
	Text     string    `orm:"type(text);null"`
	Date     time.Time `orm:"type(date);null"`
	DateTime time.Time `orm:"null"`
	Byte     byte      `orm:"null"`
	Rune     rune      `orm:"null"`
	Int      int       `orm:"null"`
	Int8     int8      `orm:"null"`
	Int16    int16     `orm:"null"`
	Int32    int32     `orm:"null"`
	Int64    int64     `orm:"null"`
	Uint     uint      `orm:"null"`
	Uint8    uint8     `orm:"null"`
	Uint16   uint16    `orm:"null"`
	Uint32   uint32    `orm:"null"`
	Uint64   uint64    `orm:"null"`
	Float32  float32   `orm:"null"`
	Float64  float64   `orm:"null"`
	Decimal  float64   `orm:"digits(8);decimals(4);null"`
}

// only for mysql
type UserBig struct {
	Id uint64
}

type User struct {
	Id         int
	UserName   string `orm:"size(30);unique"`
	Email      string `orm:"size(100)"`
	Password   string `orm:"size(100)"`
	Status     int16
	IsStaff    bool
	IsActive   bool      `orm:"default(1)"`
	Created    time.Time `orm:"auto_now_add;type(date)"`
	Updated    time.Time `orm:"auto_now"`
	Profile    *Profile  `orm:"null;rel(one);on_delete(set_null)"`
	Posts      []*Post   `orm:"reverse(many)" json:"-"`
	ShouldSkip string    `orm:"-"`
}

func NewUser() *User {
	obj := new(User)
	return obj
}

type Profile struct {
	Id    int
	Age   int16
	Money float64
	User  *User `orm:"reverse(one)" json:"-"`
}

func (u *Profile) TableName() string {
	return "user_profile"
}

func NewProfile() *Profile {
	obj := new(Profile)
	return obj
}

type Post struct {
	Id      int
	User    *User     `orm:"rel(fk)"`
	Title   string    `orm:"size(60)"`
	Content string    `orm:"type(text)"`
	Created time.Time `orm:"auto_now_add"`
	Updated time.Time `orm:"auto_now"`
	Tags    []*Tag    `orm:"rel(m2m)"`
}

func NewPost() *Post {
	obj := new(Post)
	return obj
}

type Tag struct {
	Id    int
	Name  string  `orm:"size(30)"`
	Posts []*Post `orm:"reverse(many)" json:"-"`
}

func NewTag() *Tag {
	obj := new(Tag)
	return obj
}

type Comment struct {
	Id      int
	Post    *Post     `orm:"rel(fk)"`
	Content string    `orm:"type(text)"`
	Parent  *Comment  `orm:"null;rel(fk)"`
	Created time.Time `orm:"auto_now_add"`
}

func NewComment() *Comment {
	obj := new(Comment)
	return obj
}

var DBARGS = struct {
	Driver string
	Source string
	Debug  string
}{
	os.Getenv("ORM_DRIVER"),
	os.Getenv("ORM_SOURCE"),
	os.Getenv("ORM_DEBUG"),
}

var (
	IsMysql    = DBARGS.Driver == "mysql"
	IsSqlite   = DBARGS.Driver == "sqlite3"
	IsPostgres = DBARGS.Driver == "postgres"
)

var dORM Ormer

func init() {
	Debug, _ = StrTo(DBARGS.Debug).Bool()

	if DBARGS.Driver == "" || DBARGS.Source == "" {
		fmt.Println(`need driver and source!

Default DB Drivers.

  driver: url
   mysql: https://github.com/go-sql-driver/mysql
 sqlite3: https://github.com/mattn/go-sqlite3
postgres: https://github.com/lib/pq

usage:

go get -u github.com/astaxie/beego/orm
go get -u github.com/go-sql-driver/mysql
go get -u github.com/mattn/go-sqlite3
go get -u github.com/lib/pq

#### MySQL
mysql -u root -e 'create database orm_test;'
export ORM_DRIVER=mysql
export ORM_SOURCE="root:@/orm_test?charset=utf8"
go test -v github.com/astaxie/beego/orm


#### Sqlite3
touch /path/to/orm_test.db
export ORM_DRIVER=sqlite3
export ORM_SOURCE=/path/to/orm_test.db
go test -v github.com/astaxie/beego/orm


#### PostgreSQL
psql -c 'create database orm_test;' -U postgres
export ORM_DRIVER=postgres
export ORM_SOURCE="user=postgres dbname=orm_test sslmode=disable"
go test -v github.com/astaxie/beego/orm
`)
		os.Exit(2)
	}

	RegisterDataBase("default", DBARGS.Driver, DBARGS.Source, 20)
}