package model

import (
	"database/sql/driver"
	"encoding/json"
	"time"

	"gorm.io/gorm"
)

type IotCardImportTask struct {
	gorm.Model
	BaseModel     `gorm:"embedded"`
	TaskNo        string            `gorm:"column:task_no;type:varchar(50);uniqueIndex:idx_import_task_no,where:deleted_at IS NULL;not null;comment:任务编号(IMP-YYYYMMDD-XXXXXX)" json:"task_no"`
	Status        int               `gorm:"column:status;type:int;default:1;not null;comment:任务状态 1-待处理 2-处理中 3-已完成 4-失败" json:"status"`
	CarrierID     uint              `gorm:"column:carrier_id;index;not null;comment:运营商ID" json:"carrier_id"`
	CarrierType   string            `gorm:"column:carrier_type;type:varchar(20);not null;comment:运营商类型(CMCC/CUCC/CTCC/CBN)" json:"carrier_type"`
	BatchNo       string            `gorm:"column:batch_no;type:varchar(100);comment:批次号" json:"batch_no"`
	FileName      string            `gorm:"column:file_name;type:varchar(255);comment:原始文件名" json:"file_name"`
	TotalCount    int               `gorm:"column:total_count;type:int;default:0;not null;comment:总数" json:"total_count"`
	SuccessCount  int               `gorm:"column:success_count;type:int;default:0;not null;comment:成功数" json:"success_count"`
	SkipCount     int               `gorm:"column:skip_count;type:int;default:0;not null;comment:跳过数" json:"skip_count"`
	FailCount     int               `gorm:"column:fail_count;type:int;default:0;not null;comment:失败数" json:"fail_count"`
	SkippedItems  ImportResultItems `gorm:"column:skipped_items;type:jsonb;comment:跳过记录详情" json:"skipped_items"`
	FailedItems   ImportResultItems `gorm:"column:failed_items;type:jsonb;comment:失败记录详情" json:"failed_items"`
	StartedAt     *time.Time        `gorm:"column:started_at;comment:开始处理时间" json:"started_at"`
	CompletedAt   *time.Time        `gorm:"column:completed_at;comment:完成时间" json:"completed_at"`
	ErrorMessage  string            `gorm:"column:error_message;type:text;comment:任务级错误信息" json:"error_message"`
	ShopID        *uint             `gorm:"column:shop_id;index;comment:店铺ID(发起导入的店铺)" json:"shop_id,omitempty"`
	CardList      CardListJSON      `gorm:"column:card_list;type:jsonb;comment:待导入卡列表[{iccid,msisdn}]" json:"-"`
	StorageBucket string            `gorm:"column:storage_bucket;type:varchar(100);comment:对象存储桶名" json:"storage_bucket,omitempty"`
	StorageKey    string            `gorm:"column:storage_key;type:varchar(500);comment:对象存储文件路径" json:"storage_key,omitempty"`
}

// CardItem 卡信息（ICCID + MSISDN）
type CardItem struct {
	ICCID  string `json:"iccid"`
	MSISDN string `json:"msisdn"`
}

type CardListJSON []CardItem

func (list CardListJSON) Value() (driver.Value, error) {
	if list == nil {
		return "[]", nil
	}
	return json.Marshal(list)
}

func (list *CardListJSON) Scan(value any) error {
	if value == nil {
		*list = CardListJSON{}
		return nil
	}
	bytes, ok := value.([]byte)
	if !ok {
		return nil
	}
	return json.Unmarshal(bytes, list)
}

func (IotCardImportTask) TableName() string {
	return "tb_iot_card_import_task"
}

type ImportResultItem struct {
	Line   int    `json:"line"`
	ICCID  string `json:"iccid"`
	MSISDN string `json:"msisdn,omitempty"`
	Reason string `json:"reason"`
}

type ImportResultItems []ImportResultItem

func (items ImportResultItems) Value() (driver.Value, error) {
	if items == nil {
		return "[]", nil
	}
	return json.Marshal(items)
}

func (items *ImportResultItems) Scan(value any) error {
	if value == nil {
		*items = ImportResultItems{}
		return nil
	}
	bytes, ok := value.([]byte)
	if !ok {
		return nil
	}
	return json.Unmarshal(bytes, items)
}

const (
	ImportTaskStatusPending    = 1
	ImportTaskStatusProcessing = 2
	ImportTaskStatusCompleted  = 3
	ImportTaskStatusFailed     = 4
)