feat(upload): add first prototype of File storage, svg database and svg processing. Also added --help command

pkg/svg/actions/upload.go

@@ -0,0 +1,50 @@
+package actions
+
+import (
+	"bytes"
+	"crypto/rand"
+	"encoding/hex"
+	"log"
+	"regexp"
+
+	"tomatentum.net/svg-templater/internal/database"
+	"tomatentum.net/svg-templater/pkg/svg"
+)
+
+func Create(svgbuf []byte) (svg.TemplateData, error) {
+	data := svg.TemplateData{Id: generateId(), TemplateKeys: nil}
+	populateKeys(&data, svgbuf)
+
+	_, err := svg.Storage.Create(data.Id, bytes.NewReader(svgbuf))
+	if err != nil {
+		return svg.TemplateData{}, err
+	}
+
+	if err := database.InsertSVG(&data); err != nil {
+		return svg.TemplateData{}, err
+	}
+
+	return data, nil
+}
+
+func populateKeys(data *svg.TemplateData, svg []byte) {
+	regex := regexp.MustCompile(`\{\{\s*(.*?)\s*\}\}`)
+	result := regex.FindAllSubmatch(svg, -1)
+	templateKeys := make([]string, len(result))
+
+	for i, matches := range result {
+		varname := matches[1] // first capture group
+		templateKeys[i] = string(varname)
+	}
+	data.TemplateKeys = templateKeys
+	log.Println("Found keys:\n", templateKeys)
+}
+
+func generateId() string {
+	token := make([]byte, 16)
+	if _, err := rand.Read(token); err != nil {
+		log.Fatal("Failed to generate Token:\n", err)
+		return ""
+	}
+	return hex.EncodeToString(token)
+}

pkg/svg/storage.go

@@ -0,0 +1,50 @@
+package svg
+
+import (
+	"io"
+	"log"
+	"os"
+	"path/filepath"
+)
+
+type SvgStorage interface {
+	Create(id string, svg io.Reader) (string, error)
+	Get(id string) (io.Reader, error)
+}
+
+type FileSvgStorage struct {
+	basepath string
+}
+
+func NewFileStorage(path string) *FileSvgStorage {
+	err := os.MkdirAll(path, 0755)
+	if err != nil {
+		panic(err)
+	}
+	return &FileSvgStorage{path}
+}
+
+func (f FileSvgStorage) Create(id string, svg io.Reader) (string, error) {
+	file, err := os.Create(filepath.Join(f.basepath, id+".svg"))
+
+	if err != nil {
+		return "", err
+	}
+	defer file.Close()
+
+	_, err = io.Copy(file, svg)
+	if err != nil {
+		return "", err
+	}
+
+	log.Println("Created File: ", file.Name())
+	return file.Name(), nil
+}
+
+func (f FileSvgStorage) Get(id string) (io.Reader, error) {
+	file, err := os.Open(filepath.Join(f.basepath, "svg", id+".svg"))
+	if err != nil {
+		return nil, err
+	}
+	return file, nil
+}

pkg/svg/templates.go

@@ -0,0 +1,8 @@
+package svg
+
+type TemplateData struct {
+	Id           string
+	TemplateKeys []string
+}
+
+var Storage SvgStorage