Basic infrastructure for making Application based on JSON domain desc…

…ription

.gitignore

@@ -6,6 +6,9 @@ yarn-debug.log*
 yarn-error.log*
 lerna-debug.log*
 
+# Resut of compilations
+resultApplication
+
 # Diagnostic reports (https://nodejs.org/api/report.html)
 report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
 

go.mod

@@ -0,0 +1,3 @@
+module github.com/dimau/Uni
+
+go 1.19

main.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"github.com/dimau/Uni/pkg/appSourceCodeCreator"
+	"github.com/dimau/Uni/pkg/domainDescriptionParser"
+	"io/ioutil"
+	"log"
+	"os"
+)
+
+func main() {
+	// Read marshalled text of JSON Domain Description from the file
+	file, err := os.Open("./resultApplication/textDomainDescription.json")
+	if err != nil {
+		log.Fatalln("Can't open text file with JSON domain description " + err.Error())
+	}
+
+	// Closing file after all read operations done
+	defer func() {
+		if err := file.Close(); err != nil {
+			log.Fatalln(err.Error())
+		}
+	}()
+
+	// Reading file with domain description
+	data, err := ioutil.ReadAll(file)
+	if err != nil {
+		log.Fatalln("Can't read from text file with JSON domain description " + err.Error())
+	}
+
+	// Handle JSON domain description and make a source code for an Application
+	jsonDomainDescription := domainDescriptionParser.ParseJsonDomainDescription(data)
+	sourceFileContent := appSourceCodeCreator.CreateAppSourceCode(jsonDomainDescription)
+	appSourceCodeCreator.PrintAppSourceCodeToFile(sourceFileContent)
+}

pkg/appSourceCodeCreator/createAppSourceCode.go

@@ -0,0 +1,20 @@
+package appSourceCodeCreator
+
+import (
+	"fmt"
+	"github.com/dimau/Uni/pkg/domainDescriptionParser"
+)
+
+func CreateAppSourceCode(jsonDomainDescription *domainDescriptionParser.Domain) *[]byte {
+	sourceFileContent := []byte("package main\n\n")
+
+	for _, class := range jsonDomainDescription.Classes {
+		sourceFileContent = append(sourceFileContent, []byte(fmt.Sprintf("type %v struct {\n", class.Name))...)
+		for _, attribute := range class.Attributes {
+			sourceFileContent = append(sourceFileContent, []byte(fmt.Sprintf("    %v %v\n", attribute.Name, attribute.ValueType.Name))...)
+		}
+		sourceFileContent = append(sourceFileContent, []byte(fmt.Sprintf("}\n\n"))...)
+	}
+
+	return &sourceFileContent
+}

pkg/appSourceCodeCreator/printAppSourceCodeToFile.go

@@ -0,0 +1,27 @@
+package appSourceCodeCreator
+
+import (
+	"log"
+	"os"
+)
+
+func PrintAppSourceCodeToFile(sourceFileContent *[]byte) {
+	// Create or (if already created) clean current file and open for writing
+	file, err := os.Create("./resultApplication/application.go")
+	if err != nil {
+		log.Fatalln(err.Error())
+	}
+
+	// Closing file after all writes operations done
+	defer func() {
+		if err := file.Close(); err != nil {
+			log.Fatalln(err.Error())
+		}
+	}()
+
+	// Writes all bytes to text file with source code for the App
+	_, err = file.Write(*sourceFileContent)
+	if err != nil {
+		log.Fatalln(err.Error())
+	}
+}

pkg/domainDescriptionParser/domainDescriptionParser.go

@@ -0,0 +1,38 @@
+package domainDescriptionParser
+
+import (
+	"encoding/json"
+	"log"
+)
+
+type ValueType struct {
+	Id   string `json:"id"`
+	Name string `json:"name"`
+}
+
+type Attribute struct {
+	Id        string    `json:"id"`
+	Name      string    `json:"name"`
+	Database  string    `json:"database"`
+	ValueType ValueType `json:"value-type"`
+}
+
+type Class struct {
+	Id         string      `json:"id"`
+	Name       string      `json:"name"`
+	Database   string      `json:"database"`
+	Attributes []Attribute `json:"attributes"`
+}
+
+type Domain struct {
+	Classes []Class `json:"classes"`
+}
+
+func ParseJsonDomainDescription(domain []byte) *Domain {
+	var data = &Domain{}
+	err := json.Unmarshal(domain, data)
+	if err != nil {
+		log.Fatalln("Error unmarshalling", err.Error())
+	}
+	return data
+}