实现修改猪营养需求
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182
internal/infra/repository/recipe_repository.go
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182
internal/infra/repository/recipe_repository.go
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package repository
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import (
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"context"
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"errors"
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"fmt"
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"git.huangwc.com/pig/pig-farm-controller/internal/infra/logs"
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"git.huangwc.com/pig/pig-farm-controller/internal/infra/models"
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"gorm.io/gorm"
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)
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// RecipeListOptions 定义了查询配方列表时的筛选条件
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type RecipeListOptions struct {
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Name *string
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RawMaterialName *string
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OrderBy string
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}
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// RecipeRepository 定义了与配方相关的数据库操作接口
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type RecipeRepository interface {
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CreateRecipe(ctx context.Context, recipe *models.Recipe) error
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GetRecipeByID(ctx context.Context, id uint32) (*models.Recipe, error)
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GetRecipeByName(ctx context.Context, name string) (*models.Recipe, error)
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ListRecipes(ctx context.Context, opts RecipeListOptions, page, pageSize int) ([]models.Recipe, int64, error)
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UpdateRecipe(ctx context.Context, recipe *models.Recipe) error
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UpdateRecipeIngredients(ctx context.Context, recipeID uint32, ingredients []models.RecipeIngredient) error
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DeleteRecipe(ctx context.Context, id uint32) error
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}
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// gormRecipeRepository 是 RecipeRepository 的 GORM 实现
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type gormRecipeRepository struct {
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ctx context.Context
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db *gorm.DB
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}
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// NewGormRecipeRepository 创建一个新的 RecipeRepository GORM 实现实例
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func NewGormRecipeRepository(ctx context.Context, db *gorm.DB) RecipeRepository {
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return &gormRecipeRepository{ctx: ctx, db: db}
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}
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// CreateRecipe 创建一个新的配方,并处理其关联的配方原料
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func (r *gormRecipeRepository) CreateRecipe(ctx context.Context, recipe *models.Recipe) error {
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repoCtx := logs.AddFuncName(ctx, r.ctx, "CreateRecipe")
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return r.db.WithContext(repoCtx).Transaction(func(tx *gorm.DB) error {
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if err := tx.Create(recipe).Error; err != nil {
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return fmt.Errorf("创建配方失败: %w", err)
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}
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return nil
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})
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}
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// GetRecipeByID 根据ID获取单个配方,并预加载其关联的配方原料和原料信息
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func (r *gormRecipeRepository) GetRecipeByID(ctx context.Context, id uint32) (*models.Recipe, error) {
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repoCtx := logs.AddFuncName(ctx, r.ctx, "GetRecipeByID")
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var recipe models.Recipe
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// 如果记录未找到,GORM 会返回 gorm.ErrRecordNotFound 错误
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if err := r.db.WithContext(repoCtx).Preload("RecipeIngredients.RawMaterial.RawMaterialNutrients.Nutrient").First(&recipe, id).Error; err != nil {
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return nil, err
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}
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return &recipe, nil
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}
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// GetRecipeByName 根据名称获取单个配方,并预加载其关联的配方原料和原料信息
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func (r *gormRecipeRepository) GetRecipeByName(ctx context.Context, name string) (*models.Recipe, error) {
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repoCtx := logs.AddFuncName(ctx, r.ctx, "GetRecipeByName")
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var recipe models.Recipe
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// 如果记录未找到,GORM 会返回 gorm.ErrRecordNotFound 错误
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if err := r.db.WithContext(repoCtx).Preload("RecipeIngredients.RawMaterial.RawMaterialNutrients.Nutrient").Where("name = ?", name).First(&recipe).Error; err != nil {
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return nil, err
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}
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return &recipe, nil
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}
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// ListRecipes 列出所有配方(分页),并预加载其关联的配方原料和原料信息
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func (r *gormRecipeRepository) ListRecipes(ctx context.Context, opts RecipeListOptions, page, pageSize int) ([]models.Recipe, int64, error) {
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repoCtx := logs.AddFuncName(ctx, r.ctx, "ListRecipes")
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var recipes []models.Recipe
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var total int64
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db := r.db.WithContext(repoCtx).Model(&models.Recipe{})
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// 应用筛选条件
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if opts.Name != nil && *opts.Name != "" {
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db = db.Where("name LIKE ?", "%"+*opts.Name+"%")
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}
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// 如果传入了原料名称,则使用子查询进行筛选
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if opts.RawMaterialName != nil && *opts.RawMaterialName != "" {
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subQuery := r.db.Model(&models.RecipeIngredient{}).
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Select("recipe_id").
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Joins("JOIN raw_materials ON raw_materials.id = recipe_ingredients.raw_material_id").
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Where("raw_materials.name LIKE ?", "%"+*opts.RawMaterialName+"%")
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db = db.Where("id IN (?)", subQuery)
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}
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// 首先计算总数
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if err := db.Count(&total).Error; err != nil {
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return nil, 0, err
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}
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// 然后应用排序、分页并获取数据
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if opts.OrderBy != "" {
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db = db.Order(opts.OrderBy)
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}
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offset := (page - 1) * pageSize
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if err := db.Preload("RecipeIngredients.RawMaterial.RawMaterialNutrients.Nutrient").Offset(offset).Limit(pageSize).Find(&recipes).Error; err != nil {
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return nil, 0, err
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}
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return recipes, total, nil
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}
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// UpdateRecipe 更新一个配方的主体信息(名称和描述)
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func (r *gormRecipeRepository) UpdateRecipe(ctx context.Context, recipe *models.Recipe) error {
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repoCtx := logs.AddFuncName(ctx, r.ctx, "UpdateRecipe")
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updateData := map[string]interface{}{
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"name": recipe.Name,
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"description": recipe.Description,
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}
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result := r.db.WithContext(repoCtx).Model(&models.Recipe{}).Where("id = ?", recipe.ID).Updates(updateData)
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if result.Error != nil {
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return fmt.Errorf("更新配方主体信息失败: %w", result.Error)
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}
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if result.RowsAffected == 0 {
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return fmt.Errorf("未找到要更新的配方,ID: %d", recipe.ID)
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}
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return nil
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}
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// UpdateRecipeIngredients 更新配方关联的原料列表
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func (r *gormRecipeRepository) UpdateRecipeIngredients(ctx context.Context, recipeID uint32, ingredients []models.RecipeIngredient) error {
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repoCtx := logs.AddFuncName(ctx, r.ctx, "UpdateRecipeIngredients")
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return r.db.WithContext(repoCtx).Transaction(func(tx *gorm.DB) error {
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// 1. 删除所有旧的关联配方原料
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if err := tx.Where("recipe_id = ?", recipeID).Delete(&models.RecipeIngredient{}).Error; err != nil {
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return fmt.Errorf("删除旧的配方原料失败: %w", err)
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}
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// 2. 批量创建新的关联配方原料
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if len(ingredients) > 0 {
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for i := range ingredients {
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ingredients[i].RecipeID = recipeID
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}
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if err := tx.Create(&ingredients).Error; err != nil {
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return fmt.Errorf("创建新的配方原料失败: %w", err)
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}
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}
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return nil
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})
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}
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// DeleteRecipe 根据ID删除一个配方,并级联软删除关联的 RecipeIngredient 记录
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func (r *gormRecipeRepository) DeleteRecipe(ctx context.Context, id uint32) error {
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repoCtx := logs.AddFuncName(ctx, r.ctx, "DeleteRecipe")
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return r.db.WithContext(repoCtx).Transaction(func(tx *gorm.DB) error {
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// 1. 查找 Recipe 记录,确保其存在
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var recipe models.Recipe
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if err := tx.First(&recipe, id).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return fmt.Errorf("未找到要删除的配方,ID: %d", id)
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}
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return fmt.Errorf("查询配方失败: %w", err)
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}
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// 2. 软删除所有关联的 RecipeIngredient 记录
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if err := tx.Where("recipe_id = ?", id).Delete(&models.RecipeIngredient{}).Error; err != nil {
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return fmt.Errorf("软删除关联的配方原料记录失败: %w", err)
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}
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// 3. 软删除 Recipe 记录本身
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if err := tx.Delete(&recipe).Error; err != nil {
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return fmt.Errorf("软删除配方失败: %w", err)
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}
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return nil
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})
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}
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