package repository

import (
	"fmt"
	"time"

	"github.com/topfans/backend/pkg/models"
	"gorm.io/gorm"
)

// LaserCardRepository 镭射卡数据访问层（Gateway 侧）
type LaserCardRepository struct {
	db *gorm.DB
}

// NewLaserCardRepository 创建镭射卡 Repository
func NewLaserCardRepository(db *gorm.DB) *LaserCardRepository {
	return &LaserCardRepository{db: db}
}

// FindTemplateByCode 根据 preset_id 查找模板（version=1 且未删除）
func (r *LaserCardRepository) FindTemplateByCode(code string) (*models.LaserCardTemplate, error) {
	var t models.LaserCardTemplate
	err := r.db.Where("template_code = ? AND version = 1 AND deleted_at IS NULL", code).First(&t).Error
	if err != nil {
		return nil, fmt.Errorf("template %s not found: %w", code, err)
	}
	return &t, nil
}

// CreateInstance 创建镭射卡业务实例（status=rendered）
func (r *LaserCardRepository) CreateInstance(inst *models.LaserCardInstance) error {
	return r.db.Create(inst).Error
}

// UpdateMaterialsSnapshot 更新素材快照
func (r *LaserCardRepository) UpdateMaterialsSnapshot(instanceID int64, snapshot models.MaterialsSnapshot) error {
	return r.db.Model(&models.LaserCardInstance{}).
		Where("id = ? AND deleted_at IS NULL", instanceID).
		Update("materials_snapshot", snapshot).Error
}

// UpdateStatus 更新实例状态
func (r *LaserCardRepository) UpdateStatus(instanceID int64, status string) error {
	return r.db.Model(&models.LaserCardInstance{}).
		Where("id = ? AND deleted_at IS NULL", instanceID).
		Update("status", status).Error
}

// SetMintResult 铸造成功后回填 asset_id, mint_order_id, composite_material_id，状态→minted
func (r *LaserCardRepository) SetMintResult(instanceID int64, assetID int64, mintOrderID string, compositeMaterialID *int64) error {
	updates := map[string]interface{}{
		"status":       models.LaserCardInstanceStatusMinted,
		"asset_id":     assetID,
		"mint_order_id": mintOrderID,
	}
	if compositeMaterialID != nil {
		updates["composite_material_id"] = *compositeMaterialID
	}
	return r.db.Model(&models.LaserCardInstance{}).
		Where("id = ? AND deleted_at IS NULL", instanceID).
		Updates(updates).Error
}

// StartMinting 标记实例为铸造中
func (r *LaserCardRepository) StartMinting(instanceID int64, mintOrderID string) error {
	return r.db.Model(&models.LaserCardInstance{}).
		Where("id = ? AND deleted_at IS NULL", instanceID).
		Updates(map[string]interface{}{
			"status":        models.LaserCardInstanceStatusMinting,
			"mint_order_id": mintOrderID,
		}).Error
}

// FindByID 按 ID 查实例
func (r *LaserCardRepository) FindByID(id int64) (*models.LaserCardInstance, error) {
	var i models.LaserCardInstance
	err := r.db.Where("id = ? AND deleted_at IS NULL", id).First(&i).Error
	if err != nil {
		return nil, err
	}
	return &i, nil
}

// FindByCompositeOssKey 通过合成图 OSS key 反查实例
func (r *LaserCardRepository) FindByCompositeOssKey(ossKey string) (*models.LaserCardInstance, error) {
	var i models.LaserCardInstance
	err := r.db.Where("composite_oss_key = ? AND deleted_at IS NULL", ossKey).First(&i).Error
	if err != nil {
		return nil, err
	}
	return &i, nil
}

// FindByInstanceNo 按单号查实例
func (r *LaserCardRepository) FindByInstanceNo(no string) (*models.LaserCardInstance, error) {
	var i models.LaserCardInstance
	err := r.db.Where("instance_no = ? AND deleted_at IS NULL", no).First(&i).Error
	if err != nil {
		return nil, err
	}
	return &i, nil
}

// CreateOperationLog 写入操作日志
func (r *LaserCardRepository) CreateOperationLog(log *models.LaserCardOperationLog) error {
	return r.db.Create(log).Error
}

// CreateOperationLogSimple 快速写入操作日志
func (r *LaserCardRepository) CreateOperationLogSimple(instanceID int64, instanceNo string, userID int64, action string, statusBefore, statusAfter string) error {
	now := time.Now().UnixMilli()
	return r.db.Create(&models.LaserCardOperationLog{
		InstanceID:     instanceID,
		InstanceNo:     instanceNo,
		OperatorUserID: userID,
		Action:         action,
		StatusBefore:   strPtr(statusBefore),
		StatusAfter:    strPtr(statusAfter),
		CreatedAt:      now,
	}).Error
}

func strPtr(s string) *string {
	if s == "" {
		return nil
	}
	return &s
}