Refactor autopatch: use a AppToPatch class that regroups actions, put…

… loops outside the action functions

tools/autopatches/autopatch.py

@@ -5,29 +5,37 @@
 import os
 import subprocess
 import sys
+import logging
 import time
+from typing import Optional, TypeVar, Iterable, Generator
 from pathlib import Path
 
 import requests
+import tqdm
 import toml
 
+from git import Repo, Head, Actor
+
 # add apps/tools to sys.path
 sys.path.insert(0, str(Path(__file__).parent.parent))
 
+from app_caches import AppDir
 from appslib.utils import (  # noqa: E402 pylint: disable=import-error,wrong-import-position
     get_catalog,
 )
+import appslib.get_apps_repo as get_apps_repo
 
 TOOLS_DIR = Path(__file__).resolve().parent.parent
 
 my_env = os.environ.copy()
 my_env["GIT_TERMINAL_PROMPT"] = "0"
-os.makedirs(".apps_cache", exist_ok=True)
 
-login = (TOOLS_DIR / ".github_login").open("r", encoding="utf-8").read().strip()
-token = (TOOLS_DIR / ".github_token").open("r", encoding="utf-8").read().strip()
+LOGIN = (TOOLS_DIR / ".github_login").open("r", encoding="utf-8").read().strip()
+TOKEN = (TOOLS_DIR / ".github_token").open("r", encoding="utf-8").read().strip()
 github_api = "https://api.github.com"
 
+PATCHES_PATH = Path(__file__).resolve().parent / "patches"
+
 
 def apps(min_level=4):
     for app, infos in get_catalog().items():
@@ -36,162 +44,128 @@ def apps(min_level=4):
             yield infos
 
 
-def app_cache_folder(app):
-    return os.path.join(".apps_cache", app)
-
+class AppToPatch:
+    def __init__(self, id: str, path: Path, info: dict) -> None:
+        self.id = id
+        self.path = path
+        self.info = info
+        self.patch: Optional[str] = None
+        self._repo: Optional[Repo] = None
+
+    @property
+    def repo(self) -> Repo:
+        if self._repo is None:
+            self._repo = Repo(self.path)
+        return self._repo
+
+    def cache(self) -> None:
+        appdir = AppDir(self.id, self.path)
+        appdir.ensure(self.info["url"], self.info.get("branch", "master"), False, False)
+
+    def reset(self) -> None:
+        if self.get_diff():
+            logging.warning("%s had local changes, they were stashed.", self.id)
+            self.repo.git.stash("save")
+        self.repo.git.checkout("testing")
+
+    def apply(self, patch: str) -> None:
+        current_branch = self.repo.active_branch
+        self.repo.head.reset(f"{current_branch}", index=True, working_tree=True)
+        subprocess.call([PATCHES_PATH / patch / "patch"], cwd=self.path)
+
+    def get_diff(self) -> str:
+        return " ".join(str(d) for d in self.repo.index.diff(None, create_patch=True))
+
+    def diff(self) -> None:
+        diff = self.get_diff()
+        if not diff:
+            return
+        print(80 * "=")
+        print(f"Changes in : {self.id}")
+        print(80 * "=")
+        print()
+        print(diff)
+        print("\n\n\n")
+
+    def on_github(self) -> bool:
+        return "github.com/yunohost-apps" in self.info["url"].lower()
+
+    def fork_if_needed(self, session: requests.Session) -> None:
+        repo_name = self.info["url"].split("/")[-1]
+        r = session.get(github_api + f"/repos/{LOGIN}/{repo_name}")
+        if r.status_code == 200:
+            return
+
+        fork_repo_name = self.info["url"].split("github.com/")[-1]
+        r = session.post(github_api + f"/repos/{fork_repo_name}/forks")
+        r.raise_for_status()
+        time.sleep(2)  # to avoid rate limiting lol
+
+    def commit(self, patch: str) -> None:
+        pr_title = (PATCHES_PATH / patch / "pr_title.md").open().read().strip()
+        title = f"[autopatch] {pr_title}"
+        self.repo.git.add(all=True)
+        self.repo.index.commit(title, author=Actor("Yunohost-Bot", None))
+
+    def push(self, patch: str, session: requests.Session) -> None:
+        if not self.get_diff():
+            return
+
+        if not self.on_github():
+            return
+
+        self.fork_if_needed(session)
+
+        base_branch = self.repo.active_branch
+        if patch in self.repo.heads:
+            self.repo.delete_head(patch)
+        head_branch = self.repo.create_head(patch)
+        head_branch.checkout()
+
+        self.commit(patch)
+
+        if "fork" in self.repo.remotes:
+            self.repo.delete_remote(self.repo.remote("fork"))
+        reponame = self.info["url"].rsplit("/", 1)[-1]
+        self.repo.create_remote(
+            "fork", url=f"https://{LOGIN}:{TOKEN}@github.com/{LOGIN}/{reponame}"
+        )
 
-def git(cmd, in_folder=None):
-    if not isinstance(cmd, list):
-        cmd = cmd.split()
-    if in_folder:
-        cmd = ["-C", in_folder] + cmd
-    cmd = ["git"] + cmd
-    return subprocess.check_output(cmd, env=my_env).strip().decode("utf-8")
+        self.repo.remote(name="fork").push(progress=None, force=True)
 
+        self.create_pull_request(patch, head_branch, base_branch, session)
 
-# Progress bar helper, stolen from https://stackoverflow.com/a/34482761
-def progressbar(it, prefix="", size=60, file=sys.stdout):
-    it = list(it)
-    count = len(it)
+    def create_pull_request(
+        self, patch: str, head: Head, base: Head, session: requests.Session
+    ) -> None:
+        pr_title = (PATCHES_PATH / patch / "pr_title.md").open().read().strip()
+        pr_body = (PATCHES_PATH / patch / "pr_body.md").open().read().strip()
+        PR = {
+            "title": f"[autopatch] {pr_title}",
+            "body": f"This is an automatic PR\n\n{pr_body}",
+            "head": f"{LOGIN}:{head.name}",
+            "base": base.name,
+            "maintainer_can_modify": True,
+        }
 
-    def show(j, name=""):
-        name += "          "
-        x = int(size * j / count)
-        file.write(
-            "%s[%s%s] %i/%i %s\r" % (prefix, "#" * x, "." * (size - x), j, count, name)
-        )
-        file.flush()
-
-    show(0)
-    for i, item in enumerate(it):
-        yield item
-        show(i + 1, item["id"])
-    file.write("\n")
-    file.flush()
-
-
-def build_cache():
-    for app in progressbar(apps(), "Git cloning: ", 40):
-        folder = os.path.join(".apps_cache", app["id"])
-        reponame = app["url"].rsplit("/", 1)[-1]
-        git(f"clone --quiet --depth 1 --single-branch {app['url']} {folder}")
-        git(
-            f"remote add fork https://{login}:{token}@github.com/{login}/{reponame}",
-            in_folder=folder,
-        )
+        fork_repo_name = self.info["url"].split("github.com/")[-1]
+        repo_name = self.info["url"].split("/")[-1]
+        r = session.post(github_api + f"/repos/{fork_repo_name}/pulls", json.dumps(PR))
+        r.raise_for_status()
+        print(json.loads(r.text)["html_url"])
+        time.sleep(4)  # to avoid rate limiting lol
 
 
-def apply(patch):
-    patch_path = os.path.abspath(os.path.join("patches", patch, "patch.sh"))
-
-    for app in progressbar(apps(), "Apply to: ", 40):
-        folder = os.path.join(".apps_cache", app["id"])
-        current_branch = git(f"symbolic-ref --short HEAD", in_folder=folder)
-        git(f"reset --hard origin/{current_branch}", in_folder=folder)
-        os.system(f"cd {folder} && bash {patch_path}")
-
-
-def diff():
-    for app in apps():
-        folder = os.path.join(".apps_cache", app["id"])
-        if bool(
-            subprocess.check_output(f"cd {folder} && git diff", shell=True)
-            .strip()
-            .decode("utf-8")
-        ):
-            print("\n\n\n")
-            print("=================================")
-            print("Changes in : " + app["id"])
-            print("=================================")
-            print("\n")
-            os.system(f"cd {folder} && git --no-pager diff")
-
-
-def push(patch):
-    title = (
-        "[autopatch] "
-        + open(os.path.join("patches", patch, "pr_title.md")).read().strip()
-    )
+IterType = TypeVar("IterType")
 
-    def diff_not_empty(app):
-        folder = os.path.join(".apps_cache", app["id"])
-        return bool(
-            subprocess.check_output(f"cd {folder} && git diff", shell=True)
-            .strip()
-            .decode("utf-8")
-        )
 
-    def app_is_on_github(app):
-        return "github.com" in app["url"]
+def progressbar(elements: list[IterType]) -> Generator[IterType, None, None]:
+    return tqdm.tqdm(elements, total=len(elements), ascii=" ·#")
 
-    apps_to_push = [
-        app for app in apps() if diff_not_empty(app) and app_is_on_github(app)
-    ]
 
-    with requests.Session() as s:
-        s.headers.update({"Authorization": f"token {token}"})
-        for app in progressbar(apps_to_push, "Forking: ", 40):
-            app["repo"] = app["url"][len("https://github.com/") :].strip("/")
-            fork_if_needed(app["repo"], s)
-            time.sleep(2)  # to avoid rate limiting lol
-
-        for app in progressbar(apps_to_push, "Pushing: ", 40):
-            app["repo"] = app["url"][len("https://github.com/") :].strip("/")
-            app_repo_name = app["url"].rsplit("/", 1)[-1]
-            folder = os.path.join(".apps_cache", app["id"])
-            current_branch = git(f"symbolic-ref --short HEAD", in_folder=folder)
-            git(f"reset origin/{current_branch}", in_folder=folder)
-            git(
-                ["commit", "-a", "-m", title, "--author='Yunohost-Bot <>'"],
-                in_folder=folder,
-            )
-            try:
-                git(f"remote remove fork", in_folder=folder)
-            except Exception:
-                pass
-            git(
-                f"remote add fork https://{login}:{token}@github.com/{login}/{app_repo_name}",
-                in_folder=folder,
-            )
-            git(f"push fork {current_branch}:{patch} --quiet --force", in_folder=folder)
-            create_pull_request(app["repo"], patch, current_branch, s)
-            time.sleep(4)  # to avoid rate limiting lol
-
-
-def fork_if_needed(repo, s):
-    repo_name = repo.split("/")[-1]
-    r = s.get(github_api + f"/repos/{login}/{repo_name}")
-
-    if r.status_code == 200:
-        return
-
-    r = s.post(github_api + f"/repos/{repo}/forks")
-
-    if r.status_code != 200:
-        print(r.text)
-
-
-def create_pull_request(repo, patch, base_branch, s):
-    PR = {
-        "title": "[autopatch] "
-        + open(os.path.join("patches", patch, "pr_title.md")).read().strip(),
-        "body": "This is an automatic PR\n\n"
-        + open(os.path.join("patches", patch, "pr_body.md")).read().strip(),
-        "head": login + ":" + patch,
-        "base": base_branch,
-        "maintainer_can_modify": True,
-    }
-
-    r = s.post(github_api + f"/repos/{repo}/pulls", json.dumps(PR))
-
-    if r.status_code != 200:
-        print(r.text)
-    else:
-        json.loads(r.text)["html_url"]
-
-
-def main():
+def main() -> None:
     parser = argparse.ArgumentParser()
+    get_apps_repo.add_args(parser)
     parser.add_argument(
         "the_patch", type=str, nargs="?", help="The name of the patch to apply"
     )
@@ -212,24 +186,44 @@ def main():
     )
     args = parser.parse_args()
 
+    get_apps_repo.from_args(args)
+    cache_path = get_apps_repo.cache_path(args)
+    cache_path.mkdir(exist_ok=True, parents=True)
+
     if not (args.cache or args.apply or args.diff or args.push):
         parser.error("We required --cache, --apply, --diff or --push.")
 
+    apps_to_patch: list[AppToPatch] = [
+        AppToPatch(info["id"], cache_path / info["id"], info) for info in apps()
+    ]
+
     if args.cache:
-        build_cache()
+        print("Caching apps...")
+        for app in progressbar(apps_to_patch):
+            app.cache()
 
     if args.apply:
         if not args.the_patch:
             parser.error("--apply requires the patch name to be passed")
-        apply(args.the_patch)
+        print(f"Applying patch '{args.the_patch}' to apps...")
+        for app in progressbar(apps_to_patch):
+            app.reset()
+            app.apply(args.the_patch)
 
     if args.diff:
-        diff()
+        print("Printing diff of apps...")
+        for app in progressbar(apps_to_patch):
+            app.diff()
 
     if args.push:
         if not args.the_patch:
             parser.error("--push requires the patch name to be passed")
-        push(args.the_patch)
+        print("Pushing apps...")
+        with requests.Session() as session:
+            session.headers.update({"Authorization": f"token {TOKEN}"})
+            for app in progressbar(apps_to_patch):
+                app.push(args.the_patch, session)
 
 
-main()
+if __name__ == "__main__":
+    main()