chore: move homepage override and icon cache to $BASE_DIR/data, add migration code

pkg/version.go

@@ -1,7 +1,76 @@
 package pkg
 
-var version = "unset"
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
 
-func GetVersion() string {
-	return version
+func GetVersion() Version {
+	return Version{Major: major, Minor: minor, Patch: patch}
+}
+
+func init() {
+	major, minor, patch = parseVersion(version)
+}
+
+type Version struct{ Major, Minor, Patch int }
+
+func (v Version) String() string {
+	return fmt.Sprintf("%d.%d.%d", v.Major, v.Minor, v.Patch)
+}
+
+func (v Version) MarshalText() ([]byte, error) {
+	return []byte(v.String()), nil
+}
+
+func (v Version) IsNewerThan(other Version) bool {
+	if v.Major != other.Major {
+		return v.Major > other.Major
+	}
+	if v.Minor != other.Minor {
+		return v.Minor > other.Minor
+	}
+	return v.Patch > other.Patch
+}
+
+func (v Version) IsOlderThan(other Version) bool {
+	if v.Major != other.Major {
+		return v.Major < other.Major
+	}
+	if v.Minor != other.Minor {
+		return v.Minor < other.Minor
+	}
+	return v.Patch < other.Patch
+}
+
+func (v Version) IsEqual(other Version) bool {
+	return v.Major == other.Major && v.Minor == other.Minor && v.Patch == other.Patch
+}
+
+var (
+	version             = "unset"
+	major, minor, patch int
+)
+
+func parseVersion(v string) (major, minor, patch int) {
+	v = strings.Split(v, "-")[0]
+	v = strings.TrimPrefix(v, "v")
+	parts := strings.Split(v, ".")
+	if len(parts) != 3 {
+		return
+	}
+	major, err := strconv.Atoi(parts[0])
+	if err != nil {
+		return
+	}
+	minor, err = strconv.Atoi(parts[1])
+	if err != nil {
+		return
+	}
+	patch, err = strconv.Atoi(parts[2])
+	if err != nil {
+		return
+	}
+	return
 }