package model

import (
	"encoding/json"
	"time"
)

// LampTest LAMP 检测任务单
type LampTest struct {
	ID             string          `gorm:"type:uuid;primaryKey;default:gen_random_uuid()" json:"id"`
	RoomID         *string         `gorm:"column:room_id;type:uuid;index" json:"roomId,omitempty"`
	BatchID        *string         `gorm:"column:batch_id;type:uuid;index" json:"batchId,omitempty"`
	Diseases       json.RawMessage `gorm:"type:jsonb" json:"diseases,omitempty"`
	Status         string          `gorm:"size:16;default:pending" json:"status"` // pending/testing/resulted
	SampleInfo     *string         `gorm:"column:sample_info;size:255" json:"sampleInfo,omitempty"`
	Result         *string         `gorm:"size:16" json:"result,omitempty"` // positive/negative/invalid
	ResultImageURL *string         `gorm:"column:result_image_url;size:512" json:"resultImageUrl,omitempty"`
	OperatorID     *string         `gorm:"column:operator_id;type:uuid" json:"operatorId,omitempty"`
	ResultedAt     *time.Time      `gorm:"column:resulted_at;type:timestamptz" json:"resultedAt,omitempty"`
	Note           *string         `gorm:"type:text" json:"note,omitempty"`
	CreatedAt      time.Time       `gorm:"type:timestamptz" json:"createdAt"`
	UpdatedAt      time.Time       `gorm:"type:timestamptz" json:"updatedAt"`
}

func (LampTest) TableName() string { return "lamp_tests" }

// LampTestStep LAMP 检测步骤
type LampTestStep struct {
	ID         string     `gorm:"type:uuid;primaryKey;default:gen_random_uuid()" json:"id"`
	LampTestID string     `gorm:"column:lamp_test_id;type:uuid;index" json:"lampTestId"`
	StepNo     int        `gorm:"column:step_no;type:int" json:"stepNo"`
	Name       string     `gorm:"size:64" json:"name"`
	Done       bool       `gorm:"default:false" json:"done"`
	DoneAt     *time.Time `gorm:"column:done_at;type:timestamptz" json:"doneAt,omitempty"`
	Note       *string    `gorm:"type:text" json:"note,omitempty"`
	CreatedAt  time.Time  `gorm:"type:timestamptz" json:"createdAt"`
	UpdatedAt  time.Time  `gorm:"type:timestamptz" json:"updatedAt"`
}

func (LampTestStep) TableName() string { return "lamp_test_steps" }

// DefaultLampSteps LAMP 标准 5 步流程（规格书 3.3.2.1）
func DefaultLampSteps() []string {
	return []string{"采样", "DNA提取", "反应体系配制", "恒温反应", "结果判读"}
}

// ValidLampResult 校验 LAMP 结果枚举
func ValidLampResult(result string) bool {
	switch result {
	case "positive", "negative", "invalid":
		return true
	default:
		return false
	}
}