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command.go
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command.go
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package gengateway
import (
"fmt"
"os"
"github.com/mirzaakhena/gogen/utils"
)
// ObjTemplate ...
type ObjTemplate struct {
PackagePath string
DomainName string
GatewayName string
UsecaseName *string
Methods utils.OutportMethods
}
func Run(inputs ...string) error {
if len(inputs) < 1 {
err := fmt.Errorf("\n" +
" # Create a gateway for all usecases with cloverdb sample implementation\n" +
" gogen gateway inmemory\n" +
" 'inmemory' is a gateway name\n" +
"\n")
return err
}
packagePath := utils.GetPackagePath()
gcfg := utils.GetGogenConfig()
gatewayName := inputs[0]
obj := ObjTemplate{
PackagePath: packagePath,
GatewayName: gatewayName,
DomainName: utils.LowerCase(gcfg.Domain),
UsecaseName: nil,
}
driverName := gcfg.Gateway
// first we create the shared
err := utils.CreateEverythingExactly("templates/", "shared", nil, obj, utils.AppTemplates)
if err != nil {
return err
}
var notExistingMethod utils.OutportMethods
// we read all the usecase folders
//var folders []string
fileInfo, err := os.ReadDir(fmt.Sprintf("domain_%s/usecase", gcfg.Domain))
if err != nil {
return err
}
uniqueMethodMap := map[string]int{}
// trace all usecase
for _, file := range fileInfo {
// skip all the file
if !file.IsDir() {
continue
}
folderName := file.Name()
em, err := createGatewayImpl(driverName, folderName, obj)
if err != nil {
return err
}
// we filter only the new method and skip the existing
for _, method := range em {
if _, exist := uniqueMethodMap[method.MethodName]; exist {
continue
}
notExistingMethod = append(notExistingMethod, method)
uniqueMethodMap[method.MethodName] = 1
}
}
gatewayCode, err := getGatewayMethodTemplate(driverName)
if err != nil {
return err
}
// we will only inject the non existing method
obj.Methods = notExistingMethod
templateHasBeenInjected, err := utils.PrintTemplate(string(gatewayCode), obj)
if err != nil {
return err
}
gatewayFilename := fmt.Sprintf("domain_%s/gateway/%s/gateway.go", gcfg.Domain, gatewayName)
bytes, err := injectToGateway(gatewayFilename, templateHasBeenInjected)
if err != nil {
return err
}
// reformat gateway.go
err = utils.Reformat(gatewayFilename, bytes)
if err != nil {
return err
}
return nil
}
func createGatewayImpl(driverName, usecaseName string, obj ObjTemplate) (utils.OutportMethods, error) {
outportMethods, err := utils.NewOutportMethods(obj.DomainName, usecaseName)
if err != nil {
return nil, err
}
obj.Methods = outportMethods
err = utils.CreateEverythingExactly2(".gogen/templates/gateway/", driverName, map[string]string{
"gatewayname": utils.LowerCase(obj.GatewayName),
"domainname": obj.DomainName,
}, obj)
if err != nil {
return nil, err
}
gatewayRootFolderName := fmt.Sprintf("domain_%s/gateway/%s", obj.DomainName, utils.LowerCase(obj.GatewayName))
// file gateway impl file is already exist, we want to inject non existing method
existingFunc, err := utils.NewOutportMethodImpl("gateway", gatewayRootFolderName)
if err != nil {
return nil, err
}
// collect the only methods that has not added yet
notExistingMethod := utils.OutportMethods{}
for _, m := range outportMethods {
if _, exist := existingFunc[m.MethodName]; !exist {
notExistingMethod = append(notExistingMethod, m)
}
}
return notExistingMethod, nil
}
// getGatewayMethodTemplate ...
func getGatewayMethodTemplate(driverName string) ([]byte, error) {
s := fmt.Sprintf(".gogen/templates/gateway/%s/domain_${domainname}/gateway/${gatewayname}/~inject._go", driverName)
return os.ReadFile(s)
}
func injectToGateway(gatewayFilename, injectedCode string) ([]byte, error) {
return utils.InjectCodeAtTheEndOfFile(gatewayFilename, injectedCode)
}