Fix for Alpha version logic (#1)

* [NO JIRA] Allow working with Alpha releases

.github/workflows/integration.yml

@@ -21,6 +21,12 @@ jobs:
         with:
           currentTag: "v2.2.4"
 
+      - id: alphatest1
+        uses: ibexa/version-logic-action@master
+        with:
+          currentTag: "v4.0.0-alpha1"
+          prevFullTag: "v3.3.9"
+
       - id: betatest1
         uses: ibexa/version-logic-action@master
         with:
@@ -47,6 +53,7 @@ jobs:
           test "${{ steps.majortest.outputs.previousTag }}" == "v1.0.0"
           test "${{ steps.minortest.outputs.previousTag }}" == "v2.2.0"
           test "${{ steps.patchtest.outputs.previousTag }}" == "v2.2.3"
+          test "${{ steps.alphatest1.outputs.previousTag }}" == "v3.3.0"
           test "${{ steps.betatest1.outputs.previousTag }}" == "v2.2.3"
           test "${{ steps.betatest2.outputs.previousTag }}" == "v2.2.4-beta1"
           test "${{ steps.rctest1.outputs.previousTag }}" == "v2.2.4-beta1"

action.yml

@@ -3,11 +3,15 @@ description: "Uses Ibexa-specific rules to output previous tag for comparing"
 author: "Petro Kurbatskyi"
 inputs:
   currentTag:
+    required: true
     description: "Current tag"
     default: "v1.0.0"
+  prevFullTag:
+    required: false
+    description: "Previous full release tag"
 outputs:
   previousTag:
     description: "Output from the action"
 runs:
   using: "docker"
-  image: "docker://ghcr.io/ibexa/version-logic-action:v1.1.0"
+  image: "docker://ghcr.io/ibexa/version-logic-action:v1.2.0"

main.py

@@ -7,15 +7,23 @@
 def main():
     # cut initial v from input
     current_tag = os.environ["INPUT_CURRENTTAG"][1:]
+    # optional parameter
+    previous_full_tag = os.environ.get("INPUT_PREVFULLTAG")
 
     major, minor, patch, prerelease, _ = semver.VersionInfo.parse(current_tag)
+    if previous_full_tag:
+        pft_ver = list(semver.VersionInfo.parse(previous_full_tag[1:]))
+    else:
+        pft_ver = list(semver.VersionInfo.parse(current_tag))
+        pft_ver[1] -= 1
+        pft_ver[2] = 0
     if prerelease:
         type, number = re.match('(?P<type>alpha|beta|rc)(?P<number>\d+)', prerelease).groups(['type', 'number'])
-        if type == 'beta' and number == '1':
+        if type in ['alpha', 'beta'] and number == '1':
             # compare 3.3.0-beta1 with 3.2.0
             # but if it's patch compare with last released patch
             if not patch:
-                previous_tag = semver.format_version(major, minor - 1, 0)
+                previous_tag = semver.format_version(pft_ver[0], pft_ver[1], 0)
             else:
                 previous_tag = semver.format_version(major, minor, patch - 1)
         elif type == 'rc' and number == '1':