feat(template): add multi page upload capability

pkg/svg/actions/page.go

@@ -0,0 +1,60 @@
+package actions
+
+import (
+	"bytes"
+	"fmt"
+	"log"
+	"regexp"
+	"strconv"
+
+	"tomatentum.net/svg-templater/internal/database"
+	"tomatentum.net/svg-templater/pkg/svg"
+)
+
+const FILEFORMAT string = "%s-%d"
+
+func AddPage(id string, svgbuf []byte) (svg.TemplatePage, error) {
+	data := svg.TemplatePage{TemplateId: id}
+	populateKeys(&data, svgbuf)
+
+	page, err := database.InsertSVGPage(&data)
+
+	data.Page = page
+
+	if err != nil {
+		return svg.TemplatePage{}, err
+	}
+
+	_, err = svg.Storage.Create(fmt.Sprintf(FILEFORMAT, id, page), bytes.NewReader(svgbuf))
+	if err != nil {
+		return svg.TemplatePage{}, err
+	}
+
+	log.Println("Created SVG Template " + data.TemplateId + " Page " + strconv.Itoa(page))
+	return data, nil
+}
+
+func DeletePage(id string, page int) (bool, error) {
+	if success, err := database.DeleteSVGPage(id, page); err != nil || !success {
+		return success, err
+	}
+
+	if err := svg.Storage.Delete(fmt.Sprintf(FILEFORMAT, id, page)); err != nil {
+		return false, err
+	}
+	log.Println("Deleted SVG Template " + id + " page " + strconv.Itoa(page))
+	return true, nil
+}
+
+func populateKeys(data *svg.TemplatePage, svgblob []byte) {
+	regex := regexp.MustCompile(svg.KeyRegex)
+	result := regex.FindAllSubmatch(svgblob, -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)
+}