Generators updated

Now includes generators for transforming storage.Role into the API
representation and the Typescript version for the frontend

cmd/RolesFrontendGenerator/main.go

@@ -0,0 +1,174 @@
+/*
+Tool for generating the frontend definition of the role model
+It generates a typescript file containing the full role, but without functions
+*/
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"regexp"
+	"strings"
+	"unicode"
+
+	"gitlab.com/mstarongitlab/goutils/sliceutils"
+)
+
+var findRoleStructRegex = regexp.MustCompile(`type Role struct \{([\s\S]+)\}\n\n/\*`)
+
+var (
+	flagInputFile  = flag.String("input", "", "Specify the input file. If empty, read from stdin")
+	flagOutputFile = flag.String(
+		"output",
+		"",
+		"Specify the output file. If empty, writes to stdout",
+	)
+)
+
+func main() {
+	flag.Parse()
+	var input io.Reader
+	var output io.Writer
+
+	if *flagInputFile == "" {
+		input = os.Stdin
+	} else {
+		file, err := os.Open(*flagInputFile)
+		if err != nil {
+			panic(err)
+		}
+		defer file.Close()
+		input = file
+	}
+	if *flagOutputFile == "" {
+		output = os.Stdout
+	} else {
+		file, err := os.Create(*flagOutputFile)
+		if err != nil {
+			panic(err)
+		}
+		defer file.Close()
+		output = file
+	}
+
+	data, err := io.ReadAll(input)
+	if err != nil {
+		panic(err)
+	}
+	if !findRoleStructRegex.Match(data) {
+		panic("Input doesn't contain role struct")
+	}
+	content := findRoleStructRegex.FindStringSubmatch(string(data))[1]
+	lines := strings.Split(content, "\n")
+	lines = sliceutils.Map(lines, func(t string) string { return strings.TrimSpace(t) })
+	importantLines := sliceutils.Filter(lines, func(t string) bool {
+		if strings.HasPrefix(t, "//") {
+			return false
+		}
+		if strings.Contains(t, "gorm.Model") {
+			return false
+		}
+		data := sliceutils.Filter(strings.Split(t, " "), func(t string) bool { return t != "" })
+		if len(data) < 2 {
+			return false
+		}
+		if !strings.HasPrefix(data[1], "*") && !strings.HasPrefix(data[1], "[]") {
+			return false
+		}
+		return true
+	})
+	nameTypeMap := map[string]string{}
+	for _, line := range importantLines {
+		parts := sliceutils.Filter(strings.Split(line, " "), func(t string) bool { return t != "" })
+		nameTypeMap[parts[0]] = parts[1]
+	}
+
+	outBuilder := strings.Builder{}
+	outBuilder.WriteString(`// Code generated by cmd/RolesApiTypeGenerator DO NOT EDIT.
+// If you need to refresh the content, run go generate again
+`)
+	outBuilder.WriteString("import Model, { attr } from '@ember-data/model';\n\n")
+
+	outBuilder.WriteString("export default class RoleModel extends Model {\n")
+	outBuilder.WriteString(`  @attr() declare createdAt: Date
+  @attr() declare updatedAt: Date
+  @attr() declare name: string
+  @attr() declare priority: number
+  @attr() declare isUserRole: boolean
+  @attr() declare isBuiltIn: boolean
+
+`)
+
+	for n, t := range nameTypeMap {
+		outBuilder.WriteString(fNT(n, t))
+	}
+
+	outBuilder.WriteString("}")
+	fmt.Fprint(output, outBuilder.String())
+}
+
+func convertGoTypeToTS(t string) string {
+	switch t {
+	case "string", "*string":
+		return "string"
+	case "time.Time":
+		return "Date"
+	case "uint",
+		"uint8",
+		"uint16",
+		"uint32",
+		"uint64",
+		"int",
+		"int8",
+		"int16",
+		"int32",
+		"int64",
+		"float32",
+		"float64",
+		"byte",
+		"*uint",
+		"*uint8",
+		"*uint16",
+		"*uint32",
+		"*uint64",
+		"*int",
+		"*int8",
+		"*int16",
+		"*int32",
+		"*int64",
+		"*float32",
+		"*float64",
+		"*byte":
+		return "number"
+	case "bool", "*bool":
+		return "boolean"
+	case "[]string":
+		return "Array<string>"
+	default:
+		panic(fmt.Sprintf("Unknown type: %s", t))
+	}
+}
+
+func convertGoNameToTS(name string) string {
+	buffer := []rune{}
+	isFirst := true
+	for _, char := range name {
+		if isFirst {
+			buffer = append(buffer, unicode.ToLower(char))
+			isFirst = false
+		} else {
+			buffer = append(buffer, char)
+		}
+	}
+	return string(buffer)
+}
+
+func fNT(name, valType string) string {
+	return fmt.Sprintf(
+		"  @attr() declare %s?: %s\n",
+		convertGoNameToTS(name),
+		convertGoTypeToTS(valType),
+	)
+}