feat: 代码生成
This commit is contained in:
Blizzard
@@ -0,0 +1,211 @@
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package codegen
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import (
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"fmt"
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"os"
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"path/filepath"
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"strings"
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codegenModel "sundynix-go/model/codegen"
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)
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// autoRegister 在代码生成后自动修改项目的注册文件
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// 包括：initialize/gorm.go, initialize/router.go, api/v1/enter.go, router/enter.go, service/enter.go
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// 以及子模块的 enter.go 文件（增量追加新 feature）
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func (s *CodegenService) autoRegister(outputDir string, config codegenModel.GenConfig) error {
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for _, module := range config.Modules {
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if strings.TrimSpace(module.PackageName) == "" || strings.TrimSpace(module.Name) == "" {
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continue
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}
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pkg := module.PackageName
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pascalModule := module.Name
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// 判断是否新模块：检查 router/{pkg}/enter.go 是否已存在
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routerEnterPath := filepath.Join(outputDir, "router", pkg, "enter.go")
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isNewModule := !fileExistsOnDisk(routerEnterPath)
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if isNewModule {
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// 新模块：注册到 5 个顶级文件
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if err := s.registerGorm(outputDir, module); err != nil {
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return fmt.Errorf("注册 gorm 迁移失败: %w", err)
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}
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if err := s.registerTopEnter(outputDir, pkg, pascalModule); err != nil {
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return fmt.Errorf("注册顶级 enter 失败: %w", err)
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}
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if err := s.registerRouter(outputDir, pkg, pascalModule, module.Features); err != nil {
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return fmt.Errorf("注册路由初始化失败: %w", err)
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}
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} else {
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// 已有模块：增量注册新 feature
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if err := s.registerGormIncremental(outputDir, module); err != nil {
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return fmt.Errorf("增量注册 gorm 迁移失败: %w", err)
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}
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if err := s.registerRouterIncremental(outputDir, pkg, pascalModule, module.Features); err != nil {
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return fmt.Errorf("增量注册路由失败: %w", err)
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}
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}
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}
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return nil
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}
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// registerGorm 向 initialize/gorm.go 的 AutoMigrate 中追加所有 feature
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func (s *CodegenService) registerGorm(outputDir string, module codegenModel.Module) error {
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gormPath := filepath.Join(outputDir, "initialize", "gorm.go")
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content, err := os.ReadFile(gormPath)
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if err != nil {
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return fmt.Errorf("读取 %s 失败: %w", gormPath, err)
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}
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text := string(content)
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pkg := module.PackageName
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// 1. 添加 import
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importLine := fmt.Sprintf("\t\"sundynix-go/model/%s\"", pkg)
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if !strings.Contains(text, importLine) {
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text = strings.Replace(text, "\"go.uber.org/zap\"", importLine+"\n\n\t\"go.uber.org/zap\"", 1)
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}
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// 2. 在 AutoMigrate 闭合 ) 前插入 model
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for _, feature := range module.Features {
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if strings.TrimSpace(feature.Name) == "" {
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continue
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}
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modelEntry := fmt.Sprintf("\t\t%s.%s{},", pkg, feature.Name)
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if !strings.Contains(text, modelEntry) {
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// 找最后一个 ) 之前的位置（AutoMigrate 结束）
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closeIdx := strings.LastIndex(text, "\t)")
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if closeIdx > 0 {
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text = text[:closeIdx] + "\n" + modelEntry + "\n" + text[closeIdx:]
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}
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}
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}
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return os.WriteFile(gormPath, []byte(text), 0644)
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}
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// registerGormIncremental 增量模式：只追加新 feature 到 AutoMigrate
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func (s *CodegenService) registerGormIncremental(outputDir string, module codegenModel.Module) error {
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return s.registerGorm(outputDir, module) // 逻辑相同，Contains 检查保证幂等
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}
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// registerTopEnter 向 api/v1/enter.go、router/enter.go、service/enter.go 追加新模块
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func (s *CodegenService) registerTopEnter(outputDir string, pkg, pascalModule string) error {
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// --- api/v1/enter.go ---
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apiEnterPath := filepath.Join(outputDir, "api", "v1", "enter.go")
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if err := appendToEnterFile(apiEnterPath,
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fmt.Sprintf("\t\"sundynix-go/api/v1/%s\"", pkg),
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fmt.Sprintf("\t%sApiGroup %s.ApiGroup", pascalModule, pkg),
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); err != nil {
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return err
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}
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// --- router/enter.go ---
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routerEnterPath := filepath.Join(outputDir, "router", "enter.go")
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if err := appendToEnterFile(routerEnterPath,
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fmt.Sprintf("\t\"sundynix-go/router/%s\"", pkg),
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fmt.Sprintf("\t%s %s.RouterGroup", pascalModule, pkg),
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); err != nil {
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return err
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}
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// --- service/enter.go ---
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svcEnterPath := filepath.Join(outputDir, "service", "enter.go")
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if err := appendToEnterFile(svcEnterPath,
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fmt.Sprintf("\t\"sundynix-go/service/%s\"", pkg),
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fmt.Sprintf("\t%sServiceGroup %s.ServiceGroup", pascalModule, pkg),
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); err != nil {
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return err
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}
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return nil
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}
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// appendToEnterFile 向 enter.go 文件追加 import 和 struct 字段
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func appendToEnterFile(filePath, importLine, structField string) error {
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content, err := os.ReadFile(filePath)
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if err != nil {
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return fmt.Errorf("读取 %s 失败: %w", filePath, err)
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}
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text := string(content)
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// 添加 import（如果不存在）
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if !strings.Contains(text, importLine) {
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// 在最后一个 import 之前插入
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lastImportIdx := strings.LastIndex(text, "\t\"")
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if lastImportIdx > 0 {
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// 找这行的换行符
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nlIdx := strings.Index(text[lastImportIdx:], "\n")
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if nlIdx > 0 {
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insertPos := lastImportIdx + nlIdx + 1
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text = text[:insertPos] + importLine + "\n" + text[insertPos:]
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}
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}
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}
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// 添加 struct 字段（如果不存在）
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if !strings.Contains(text, structField) {
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// 在 struct 的 } 之前插入
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closeBrace := strings.Index(text, "\n}")
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if closeBrace > 0 {
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text = text[:closeBrace] + "\n" + structField + text[closeBrace:]
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}
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}
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return os.WriteFile(filePath, []byte(text), 0644)
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}
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// registerRouter 向 initialize/router.go 追加路由注册代码
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func (s *CodegenService) registerRouter(outputDir, pkg, pascalModule string, features []codegenModel.Feature) error {
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routerPath := filepath.Join(outputDir, "initialize", "router.go")
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content, err := os.ReadFile(routerPath)
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if err != nil {
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return fmt.Errorf("读取 %s 失败: %w", routerPath, err)
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}
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text := string(content)
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// 1. 添加变量声明：xxxRouter := router.GroupApp.Xxx
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varLine := fmt.Sprintf("\t%sRouter := router.GroupApp.%s", lowerFirst(pkg), pascalModule)
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if !strings.Contains(text, varLine) {
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// 在 NeedAuthGroup 行之前插入
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needAuthIdx := strings.Index(text, "NeedAuthGroup := Router.Group")
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if needAuthIdx > 0 {
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text = text[:needAuthIdx] + varLine + "\n\n\t" + text[needAuthIdx:]
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}
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}
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// 2. 添加路由注册：xxxRouter.InitXxxRouter(NeedAuthGroup)
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for _, feature := range features {
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if strings.TrimSpace(feature.Name) == "" {
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continue
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}
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routerCall := fmt.Sprintf("\t\t%sRouter.Init%sRouter(NeedAuthGroup)", lowerFirst(pkg), feature.Name)
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if !strings.Contains(text, routerCall) {
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// 在最后一个 Init...Router 行之后插入
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lastInitIdx := strings.LastIndex(text, "Router(NeedAuthGroup)")
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if lastInitIdx > 0 {
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nlIdx := strings.Index(text[lastInitIdx:], "\n")
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if nlIdx > 0 {
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insertPos := lastInitIdx + nlIdx
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comment := fmt.Sprintf(" //%s", feature.Comment)
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if feature.Comment == "" {
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comment = ""
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}
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text = text[:insertPos] + "\n" + routerCall + comment + text[insertPos:]
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}
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}
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}
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}
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return os.WriteFile(routerPath, []byte(text), 0644)
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}
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// registerRouterIncremental 增量模式：只追加新 feature 的路由注册
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func (s *CodegenService) registerRouterIncremental(outputDir, pkg, pascalModule string, features []codegenModel.Feature) error {
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return s.registerRouter(outputDir, pkg, pascalModule, features) // Contains 检查保证幂等
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}
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// fileExistsOnDisk 检查文件是否已存在
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func fileExistsOnDisk(path string) bool {
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_, err := os.Stat(path)
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return err == nil
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}
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