feature: tag from ci fetches commits from remote api

src/git_flow/command/tag.py

@@ -27,12 +27,23 @@ def tag(token: Optional[str] = None):
     if target not in base.environments:
         raise GitFlowError("Solo se pueden taggear commits en ramas principales.")
 
-    branch = Git(
-        "show", get_last_merge_commit() + "^2", patch=False, format="%h"
-    ).firstline()
-    fork_point = Git.get_first_fork_point(branch, target)
-    commits = Git("log", fork_point + ".." + branch, format="%s").lines()
-    next_tag = get_next_tag_from_commits(commits, target)
+    token, ci = get_token_and_ci(token)
+
+    if ci and not token:
+        raise GitFlowError("No hay token disponible")
+
+    merge_commit = get_last_merge_commit()
+
+    if ci:
+        # Pipeline: no asumimos historial completo, los commits del PR se piden a la API
+        commits = base.get_remote_api(token).get_merge_commits(merge_commit)
+        commits = [c for c in commits if not c.is_merge]
+    else:
+        branch = Git("show", merge_commit + "^2", patch=False, format="%h").firstline()
+        fork_point = Git.get_first_fork_point(branch, target)
+        commits = Git.get_commits(fork_point, branch)
+
+    next_tag = get_next_tag_from_commits([c.subject for c in commits], target)
 
     if not next_tag:
         base.io_info(
@@ -40,14 +51,9 @@ def tag(token: Optional[str] = None):
         )
         return
 
-    token, ci = get_token_and_ci(token)
-
-    if not token:
-        raise GitFlowError("No hay token disponible")
-
     changelog = Changelog()
 
-    changelog.update(next_tag, fork_point, branch)
+    changelog.update(next_tag, commits)
     Git("add", Changelog.FILENAME).exec(print="Agregando nuevo CHANGELOG.md")
     Git("commit", message=Changelog.COMMIT_MESSAGE).exec(print="Creando commit")
     tag_commit = Git("show", "HEAD", patch=False, format="%h").firstline()
@@ -60,15 +66,15 @@ def tag(token: Optional[str] = None):
 
 
 def get_token_and_ci(token: Optional[str]):
-    try:
-        return (base.ensure_repository_token(), False)
-    except GitFlowError:
+    if token:
         return (token, True)
+    else:
+        return (base.ensure_repository_token(), False)
 
 
 def get_last_merge_commit():
     commit = Git(
-        "log", first_parent=True, merges=True, max_count=1, format="%h"
+        "log", first_parent=True, merges=True, max_count=1, format="%H"
     ).firstline()
 
     if not commit:
@@ -87,7 +93,7 @@ def check_not_tagged(commit: str):
 def get_next_tag_from_commits(commits: list[str], branch: str) -> str | None:
     increment = SEMVER_SKIP
     for commit in commits:
-        commit_type = commit[: commit.index(":")]
+        commit_type = commit.partition(":")[0]
         increment = max(increment, COMMIT_TYPE_INCREMENT.get(commit_type, SEMVER_SKIP))
 
     tag = Git.get_current_tag() or f"v0.0.0-{branch}"