package models

import (
	"code.gitea.io/gitea/modules/timeutil"
)

const (
	PeriodNotCycle = "NOT_CYCLE"
	PeriodDaily    = "DAILY"
)

//PointTaskConfig Only add and delete are allowed, edit is not allowed
//so if you want to edit config for some task code,please delete first and add new one
type TaskConfig struct {
	ID          int64  `xorm:"pk autoincr"`
	TaskCode    string `xorm:"NOT NULL"`
	Tittle      string
	AwardType   string `xorm:"NOT NULL"`
	AwardAmount int64  `xorm:"NOT NULL"`
	CreatorId   int64  `xorm:"NOT NULL"`
	CreatorName string
	CreatedUnix timeutil.TimeStamp `xorm:"created"`
	DeletedAt   timeutil.TimeStamp `xorm:"deleted"`
	DeleterId   int64
	DeleterName string
}

type TaskConfigWithLimit struct {
	ID          int64
	TaskCode    string
	Tittle      string
	AwardType   string
	AwardAmount int64
	Creator     string
	IsDeleted   bool
	CreatedUnix timeutil.TimeStamp
	DeleteAt    timeutil.TimeStamp
	Limiters    []*LimitConfigVO
}

type TaskConfigWithLimitResponse struct {
	Records  []*TaskConfigWithSingleLimit
	Total    int64
	PageSize int
	Page     int
}

type TaskConfigWithSingleLimit struct {
	ID          int64
	TaskCode    string
	AwardType   string
	AwardAmount int64
	Creator     string
	IsDeleted   bool
	CreatedUnix timeutil.TimeStamp
	DeleteAt    timeutil.TimeStamp
	RefreshRate string
	LimitNum    int64
}

type TaskAndLimiterConfig struct {
	TaskConfig  TaskConfig  `xorm:"extends"`
	LimitConfig LimitConfig `xorm:"extends"`
}

func (TaskAndLimiterConfig) TableName() string {
	return "task_config"
}

type BatchLimitConfigVO struct {
	ConfigList []TaskConfigWithLimit
}

func getTaskConfig(t *TaskConfig) (*TaskConfig, error) {
	has, err := x.Get(t)
	if err != nil {
		return nil, err
	} else if !has {
		return nil, ErrRecordNotExist{}
	}
	return t, nil
}

func GetTaskConfigByTaskCode(taskCode string) (*TaskConfig, error) {
	t := &TaskConfig{
		TaskCode: taskCode,
	}
	return getTaskConfig(t)
}

func GetTaskConfigByID(id int64) (*TaskConfig, error) {
	t := &TaskConfig{
		ID: id,
	}
	return getTaskConfig(t)
}

func GetTaskConfigList() ([]*TaskConfig, error) {
	r := make([]*TaskConfig, 0)
	err := x.Find(&r)
	if err != nil {
		return nil, err
	}
	if len(r) == 0 {
		return nil, ErrRecordNotExist{}
	}
	return r, nil
}
func GetTaskConfigPageWithDeleted(opt ListOptions) ([]*TaskAndLimiterConfig, int64, error) {
	if opt.Page <= 0 {
		opt.Page = 1
	}
	n, err := x.Unscoped().Count(&TaskConfig{})
	if err != nil {
		return nil, 0, err
	}
	r := make([]*TaskAndLimiterConfig, 0)
	err = x.Join("LEFT", "limit_config", "task_config.id = limit_config.related_id").Unscoped().Limit(opt.PageSize, (opt.Page-1)*opt.PageSize).OrderBy("task_config.deleted_at desc,task_config.id desc").Find(&r)

	if len(r) == 0 {
		return nil, 0, ErrRecordNotExist{}
	}
	return r, n, nil
}

func EditTaskConfig(config TaskConfigWithLimit, doer *User) error {
	sess := x.NewSession()
	defer sess.Close()

	//delete old task config
	p := &TaskConfig{
		ID: config.ID,
	}
	_, err := sess.Delete(p)
	if err != nil {
		sess.Rollback()
		return err
	}
	//update deleter
	p.DeleterId = doer.ID
	p.DeleterName = doer.Name
	sess.Where("id = ?", config.ID).Unscoped().Update(p)

	//add new config
	t := &TaskConfig{
		TaskCode:    config.TaskCode,
		Tittle:      config.Tittle,
		AwardType:   config.AwardType,
		AwardAmount: config.AwardAmount,
		CreatorId:   doer.ID,
		CreatorName: doer.Name,
	}
	_, err = sess.InsertOne(t)
	if err != nil {
		sess.Rollback()
		return err
	}

	//delete old limiter config
	lp := &LimitConfig{
		RelatedId: config.ID,
	}
	_, err = sess.Delete(lp)
	if err != nil {
		sess.Rollback()
		return err
	}
	lp.DeleterName = doer.Name
	lp.DeleterId = doer.ID
	//update deleter
	sess.Where("related_id = ?", config.ID).Unscoped().Update(lp)

	//add new limiter config
	if config.Limiters != nil && len(config.Limiters) > 0 {
		for _, v := range config.Limiters {
			//add new config
			l := &LimitConfig{
				Tittle:      v.Tittle,
				RefreshRate: v.RefreshRate,
				Scope:       v.Scope,
				LimitNum:    v.LimitNum,
				LimitCode:   config.TaskCode,
				LimitType:   LimitTypeTask.Name(),
				CreatorId:   doer.ID,
				CreatorName: doer.Name,
				RelatedId:   t.ID,
			}
			_, err = sess.Insert(l)
			if err != nil {
				sess.Rollback()
				return err
			}
		}
	}
	sess.Commit()
	return nil
}

func NewTaskConfig(config TaskConfigWithLimit, doer *User) error {
	sess := x.NewSession()
	defer sess.Close()

	//add new config
	t := &TaskConfig{
		TaskCode:    config.TaskCode,
		Tittle:      config.Tittle,
		AwardType:   config.AwardType,
		AwardAmount: config.AwardAmount,
		CreatorId:   doer.ID,
		CreatorName: doer.Name,
	}
	_, err := sess.InsertOne(t)
	if err != nil {
		sess.Rollback()
		return err
	}

	//add new limiter config
	if config.Limiters != nil && len(config.Limiters) > 0 {
		for _, v := range config.Limiters {
			//add new config
			l := &LimitConfig{
				RelatedId:   t.ID,
				Tittle:      v.Tittle,
				RefreshRate: v.RefreshRate,
				Scope:       v.Scope,
				LimitNum:    v.LimitNum,
				LimitCode:   config.TaskCode,
				LimitType:   LimitTypeTask.Name(),
				CreatorId:   doer.ID,
				CreatorName: doer.Name,
			}
			_, err = sess.Insert(l)
			if err != nil {
				sess.Rollback()
				return err
			}
		}
	}
	sess.Commit()
	return nil
}

func DelTaskConfig(id int64, doer *User) error {
	sess := x.NewSession()
	defer sess.Close()

	//delete old task config
	p := &TaskConfig{
		ID: id,
	}
	_, err := sess.Delete(p)
	if err != nil {
		sess.Rollback()
		return err
	}
	//update deleter
	p.DeleterId = doer.ID
	p.DeleterName = doer.Name
	sess.Where("id = ?", id).Unscoped().Update(p)
	//delete old limiter config
	lp := &LimitConfig{
		RelatedId: id,
	}
	_, err = sess.Delete(lp)
	if err != nil {
		sess.Rollback()
		return err
	}
	lp.DeleterName = doer.Name
	lp.DeleterId = doer.ID
	//update deleter
	sess.Where("related_id = ?", id).Unscoped().Update(lp)
	sess.Commit()
	return nil
}