Fix publishing snapshot

When calling APTLY publish API, we have to pass the distribution name
and not the repository name. Distribution names are now collected from
changes files and a call to the APTLY publish API will be made for all
updated distribution.

Also add a PREFIX parameter to permit to specify the APTLY prefix (and
storage if it need to be specified).

aptly-publish

@@ -43,9 +43,11 @@ if not API_PASSWORD:
 MAX_RETRY = from_env('MAX_RETRIES', None)
 
 REPO_NAME = from_env('REPO_NAME', 'stable')
+PREFIX = from_env('PREFIX', '.')
 REPO_COMPONENT = from_env('REPO_COMPONENT', 'main')
 INPUT_PATH = from_env('PATH', 'dist')
 SOURCE_NAME = from_env('SOURCE_PACKAGE_NAME', None)
+DISTRIBUTIONS = []
 
 # List changes files
 changes_files_regex = (
@@ -96,13 +98,14 @@ def list_files_in_changes_file(filepath):
     files = []
     for infos in parser.parse():
         for info in infos:
-            if info['tag'].lower() != 'files':
-                continue
-
-            for line in info['value'].split('  '):
-                if not line:
-                    continue
-                files.append(os.path.join(dirpath, line.split()[-1]))
+            if info['tag'].lower() == 'files':
+                for line in info['value'].split('  '):
+                    if not line:
+                        continue
+                    files.append(os.path.join(dirpath, line.split()[-1]))
+            if info['tag'].lower() == 'distribution':
+                if info['value'] not in DISTRIBUTIONS:
+                    DISTRIBUTIONS.append(info['value'])
     return files
 
 
@@ -145,7 +148,9 @@ def include_file(package_name, changes_file):
         result.status_code == 200 and
         data.get('Report', {}).get('Added')
     ):
-        print(f'Unknown error occurred including {changes_file}')
+        print(
+            f'Unknown error occurred including {changes_file}'
+            'See APTLY API logs for details.')
         return False
     return True
 
@@ -158,9 +163,8 @@ for changes_file in changes_files:
     for filepath in filepaths:
         if not upload_file(package_name, filepath):
             print(
-                f'    - {filepath}: fail to upload file, pass this changes '
-                'file'
-            )
+                f'    - {filepath}: fail to upload file. See APTLY API logs '
+                'for details.')
             sys.exit(1)
         else:
             print(f'    - {filepath}')
@@ -190,30 +194,35 @@ error = (
     not data.get('CreatedAt')
 )
 if error:
-    print(f'Fail to create snapshot "{snap_name}" of repository "{REPO_NAME}"')
-    sys.exit(1)
-
-
-# Update published snapshot of repository
-print(
-    f'Update published snapshot of repository "{REPO_NAME}" to "{snap_name}"')
-url = f'{API_URL}/publish/:./{REPO_NAME}'
-payload = {
-    'Snapshots': [
-        {
-            'Component': REPO_COMPONENT,
-            'Name': snap_name
-        }
-    ]
-}
-result = session.put(url, json=payload)
-if (
-    result.status_code < 200 or
-    result.status_code > 299
-):
     print(
-        f'Fail to update published snapshot of repository "{REPO_NAME}" to '
-        f'"{snap_name}"')
+        f'Fail to create snapshot "{snap_name}" of repository "{REPO_NAME}".'
+        'See APTLY API logs for details.')
     sys.exit(1)
 
+
+# Update published snapshot of repository for each distributions
+for distribution in DISTRIBUTIONS:
+    print(
+        f'Update published snapshot of distribution "{distribution}" to '
+        f'"{snap_name}" (prefix: {PREFIX})')
+    url = f'{API_URL}/publish/:{PREFIX}/{distribution}'
+    payload = {
+        'Snapshots': [
+            {
+                'Component': REPO_COMPONENT,
+                'Name': snap_name
+            }
+        ]
+    }
+    result = session.put(url, json=payload)
+    if (
+        result.status_code < 200 or
+        result.status_code > 299
+    ):
+        print(
+            f'Fail to update published snapshot of distribution "{distribution}" '
+            f'to "{snap_name}" (prefix: {PREFIX}). See APTLY API logs for '
+            'details.')
+        sys.exit(1)
+
 print("Done.")