support shopware6 version and base urls

composer.go

@@ -0,0 +1,94 @@
+package gocommerce
+
+import (
+	"encoding/json"
+	"errors"
+	"os"
+	"regexp"
+	"strings"
+)
+
+type (
+	composerRoot struct {
+		Name    string            `json:"name"`
+		Version string            `json:"version"`
+		Require map[string]string `json:"require"`
+	}
+
+	composerPackages struct {
+		Packages []struct {
+			Name    string `json:"name"`
+			Version string `json:"version"`
+		} `json:"packages"`
+	}
+)
+
+func getVersionFromComposerJSONFile(
+	jsonFile string,
+	pkgRgx *regexp.Regexp,
+) (string, error) {
+	jf, err := os.ReadFile(jsonFile)
+	if err != nil {
+		return "", err
+	}
+
+	cr := composerRoot{}
+	err = json.Unmarshal(jf, &cr)
+	if err != nil {
+		return "", err
+	}
+
+	for p, v := range cr.Require {
+		if pkgRgx.MatchString(p) {
+			return v, nil
+		}
+	}
+
+	return "", errors.New("unable to determine version from composer.json")
+}
+
+func getVersionFromComposerLockFile(
+	lockFile string,
+	pkgRgx *regexp.Regexp,
+) (string, error) {
+	lf, err := os.ReadFile(lockFile)
+	if err != nil {
+		return "", err
+	}
+
+	cp := composerPackages{}
+	err = json.Unmarshal(lf, &cp)
+	if err != nil {
+		return "", err
+	}
+
+	for _, p := range cp.Packages {
+		if pkgRgx.MatchString(p.Name) {
+			return p.Version, nil
+		}
+	}
+
+	return "", errors.New("unable to determine version from composer.lock")
+}
+
+func stripVersionPrefix(v string) string {
+	if strings.HasPrefix(v, "v") {
+		return v[1:]
+	}
+	return v
+}
+
+func getVersionFromComposer(
+	docroot string,
+	pkgRgx *regexp.Regexp,
+) (string, error) {
+	version, err := getVersionFromComposerLockFile(docroot+"/composer.lock", pkgRgx)
+	if err == nil {
+		return stripVersionPrefix(version), nil
+	}
+	version, err = getVersionFromComposerJSONFile(docroot+"/composer.json", pkgRgx)
+	if err == nil {
+		return stripVersionPrefix(version), nil
+	}
+	return "", err
+}