package model

import (
	"database/sql/driver"
	"errors"
	"gorm.io/datatypes"
)

type Integration struct {
	ID     uint64            `gorm:"primaryKey; autoIncrement;"`
	Type   IntegrationType   `gorm:"column:type; not null"`
	ChatID uint64            `gorm:"column:chat_id; not null"`
	Params datatypes.JSONMap `gorm:"column:params; not null"`
}

func (Integration) TableName() string {
	return "integration"
}

type IntegrationType uint8

const (
	InvalidIntegration IntegrationType = iota
	RedmineIntegration
)

var (
	integrationTypesToIds = map[string]IntegrationType{
		"invalid": InvalidIntegration,
		"redmine": RedmineIntegration,
	}
	idsToIntegrationTypes = map[IntegrationType]string{
		InvalidIntegration: "invalid",
		RedmineIntegration: "redmine",
	}
)

func (it *IntegrationType) Scan(value interface{}) error {
	switch v := value.(type) {
	case nil:
		*it = 0 // or whatever default you want to set if the field is null in db
		return nil
	case IntegrationType:
		*it = v
	case string:
		// lookup the value from the map and assign it
		val, ok := integrationTypesToIds[v]
		if !ok {
			return errors.New("invalid IntegrationType")
		}
		*it = val
	default:
		return errors.New("invalid type")
	}
	return nil
}

func (it IntegrationType) Value() (driver.Value, error) {
	val, ok := idsToIntegrationTypes[it]
	if ok {
		return val, nil
	}
	return "", errors.New("invalid IntegrationType")
}